/* Global Styles – mobile-first base */
html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

/* Reduce motion for accessibility and performance on low-end devices */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:root {
    /* Modern Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --warning-gradient: linear-gradient(135deg, #f2994a 0%, #f2c94c 100%);
    --danger-gradient: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    --dark-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);

    /* Modern Colors */
    --primary: #667eea;
    --primary-dark: #5a6fd8;
    --secondary: #764ba2;
    --accent: #ffd700;
    --success: #38ef7d;
    --warning: #f2994a;
    --danger: #eb3349;
    --dark: #1e3c72;
    --light: #f8f9fa;
    --white: #ffffff;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    --font-mono: 'Fira Code', monospace;

    /* Spacing & Sizing */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@400;500;600;700&family=Fira+Code:wght@400;500&display=swap');

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    background: linear-gradient(135deg, #f8f9fb 0%, #e9ecef 100%);
    min-height: 100vh;
    color: #2c3e50;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

/* =============================================================================
   AUTH UI HYDRATION (prevents navbar flicker on page switch)
   - A tiny <head> script sets classes on <html> from localStorage
   - Firebase auth then syncs the real state and updates the cache
   ============================================================================= */
html:not(.lf-auth-hydrated) #loginLink,
html:not(.lf-auth-hydrated) #logoutLink,
html:not(.lf-auth-hydrated) #adminLink,
html:not(.lf-auth-hydrated) #navReportLink,
html:not(.lf-auth-hydrated) #navMyItemsLink,
html:not(.lf-auth-hydrated) #navMyClaimsLink {
    visibility: hidden !important; /* avoid 1-2s wrong-state flash */
}

/* Logged out */
html.lf-auth-hydrated:not(.lf-logged-in) #logoutLink {
    display: none !important;
}
html.lf-auth-hydrated:not(.lf-logged-in) #loginLink {
    display: block !important;
    visibility: visible !important;
}

/* Logged in */
html.lf-auth-hydrated.lf-logged-in #loginLink {
    display: none !important;
}
html.lf-auth-hydrated.lf-logged-in #logoutLink {
    display: block !important;
    visibility: visible !important;
}

/* Admin link */
html.lf-auth-hydrated.lf-admin #adminLink {
    display: block !important;
    visibility: visible !important;
}
html.lf-auth-hydrated:not(.lf-admin) #adminLink {
    display: none !important;
}

/* Hide Report/My Items/My Claims for admins (matches JS behavior) */
html.lf-auth-hydrated.lf-admin #navReportLink,
html.lf-auth-hydrated.lf-admin #navMyItemsLink,
html.lf-auth-hydrated.lf-admin #navMyClaimsLink {
    display: none !important;
}
html.lf-auth-hydrated:not(.lf-admin) #navReportLink,
html.lf-auth-hydrated:not(.lf-admin) #navMyItemsLink,
html.lf-auth-hydrated:not(.lf-admin) #navMyClaimsLink {
    display: block !important;
    visibility: visible !important;
}

/* Custom Navbar Styles */
.custom-navbar {
    background: var(--dark-gradient) !important;
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-family: var(--font-secondary);
    transition: var(--transition-normal);
    position: relative;
}

.navbar-brand:hover {
    transform: scale(1.02);
}

.navbar-brand::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.navbar-brand:hover::after {
    transform: scaleX(1);
}

.college-logo {
    background: linear-gradient(135deg, var(--accent) 0%, #ffed4e 100%);
    color: var(--dark);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.college-logo::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    transition: var(--transition-slow);
    opacity: 0;
}

.college-logo:hover::before {
    animation: shine 0.6s ease-in-out;
}

@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
        opacity: 0;
    }

    50% {
        opacity: 1;
    }

    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
        opacity: 0;
    }
}

.college-logo:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-glow);
}

.brand-text {
    line-height: 1.2;
}

.college-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

.app-name {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius-md);
    margin: 0 0.25rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    opacity: 0;
    transition: var(--transition-normal);
}

.navbar-nav .nav-link:hover::before {
    opacity: 1;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.navbar-nav .nav-link.active {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.25) 0%, rgba(255, 215, 0, 0.15) 100%);
    color: var(--accent) !important;
    box-shadow: var(--shadow-glow);
    backdrop-filter: blur(10px);
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}

.navbar-nav .nav-link i {
    font-size: 0.9rem;
}

/* Mobile navbar improvements */
@media (max-width: 991.98px) {
    .navbar-brand {
        font-size: 1.1rem;
    }

    .college-logo {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .college-name {
        font-size: 1.2rem;
    }

    .app-name {
        font-size: 0.8rem;
    }

    .navbar-toggler {
        border: none;
        padding: 0.25rem 0.5rem;
    }

    .navbar-toggler:focus {
        box-shadow: none;
    }

    .navbar-collapse {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* Alert Container – responsive for mobile */
#alertContainer {
    z-index: 9999;
    left: 0;
    right: 0;
    padding: 0.5rem !important;
    max-width: 100vw;
    pointer-events: none;
}

#alertContainer .alert {
    min-width: 0;
    width: 100%;
    max-width: 100%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    pointer-events: auto;
}

@media (min-width: 576px) {
    #alertContainer {
        left: auto;
        right: 1rem;
        padding: 1rem !important;
        max-width: 380px;
    }
    #alertContainer .alert {
        min-width: 300px;
    }
}

/* Safe area for notched devices (e.g. iPhone X+) */
@supports (padding: env(safe-area-inset-top)) {
    #alertContainer {
        top: env(safe-area-inset-top);
        right: max(0.5rem, env(safe-area-inset-right));
    }
    .navbar .container {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }
}

.alert-toast {
    animation: slideIn 0.25s ease-out;
    border-radius: var(--border-radius-md);
}

/* No Items Message */
#noItemsMessage {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #f8f9fa;
    border-radius: 10px;
    border: 2px dashed #dee2e6;
}

#noItemsMessage i {
    color: #6c757d;
    margin-bottom: 1rem;
}

#noItemsMessage h4 {
    color: #495057;
    margin-bottom: 0.5rem;
}

#noItemsMessage p {
    color: #6c757d;
    margin-bottom: 0;
}

/* Hero Section */
.hero-section {
    background: var(--primary-gradient);
    color: white;
    min-height: 320px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-weight: 700;
    font-family: var(--font-secondary);
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-section p {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-section .btn-primary {
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.02) 0%, rgba(118, 75, 162, 0.02) 100%);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* Containment for list performance (fewer reflows on scroll/filter) */
#itemsContainer,
#historyItemsContainer,
#myClaimsContainer {
    contain: layout style;
}

/* Desktop: filter panel always visible (index filter section) */
@media (min-width: 768px) {
    #filterMobilePanel.filter-mobile-panel.collapse {
        display: block !important;
        height: auto !important;
        visibility: visible !important;
        overflow: visible !important;
    }
}

.card-header {
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 1.25rem;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.card-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    pointer-events: none;
}

.card-body {
    padding: 1.5rem;
}

/* Item Card Styles */
.item-card {
    transition: var(--transition-normal);
    cursor: pointer;
    height: 100%;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.item-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 1;
}

.item-card:hover::before {
    opacity: 1;
}

.item-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.item-card:hover .item-image {
    transform: scale(1.05);
}

/* Mobile: disable expensive hover effects to reduce lag */
@media (max-width: 991.98px) {
    .card:hover,
    .item-card:hover {
        transform: none;
    }
    .item-card:hover .item-image,
    .card:hover .item-image {
        transform: none;
    }
    .navbar.custom-navbar,
    .navbar {
        backdrop-filter: none;
    }
    .modal-content {
        backdrop-filter: none;
    }
    .modal-backdrop {
        backdrop-filter: none;
    }
    .navbar-nav .dropdown-menu {
        backdrop-filter: none;
    }
}

/* ========== Mobile-only: Grid layout for index & history, enhanced UI ========== */
@media (max-width: 767px) {
    /* Index: grid layout for items (mobile only) - Enhanced & Catchy */
    .items-grid-mobile {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        margin-left: 0;
        margin-right: 0;
    }
    .items-grid-mobile > [class*="col-"] {
        max-width: none !important;
        flex: none !important;
        width: auto !important;
        min-width: 0;
        padding: 0;
        margin-bottom: 0 !important;
    }
    .items-grid-mobile .item-card {
        border-radius: var(--border-radius-lg);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
        border: 1px solid rgba(102, 126, 234, 0.1);
        overflow: hidden;
    }
    .items-grid-mobile .item-card:active {
        transform: scale(0.97);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    }
    .items-grid-mobile .item-card .card-body {
        padding: 0.75rem;
        background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
    }
    .items-grid-mobile .card-title {
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 0.4rem;
        line-height: 1.3;
        color: #2c3e50;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .items-grid-mobile .text-muted.small {
        font-size: 0.8rem;
        color: #6c757d;
        margin-bottom: 0.3rem;
    }
    .items-grid-mobile .text-muted.small i {
        color: var(--primary);
        margin-right: 0.25rem;
    }
    .items-grid-mobile .item-status-badge {
        top: 6px;
        right: 6px;
        padding: 0.3rem 0.6rem;
        font-size: 0.7rem;
        font-weight: 600;
        border-radius: var(--border-radius-md);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
        letter-spacing: 0.02em;
    }
    .items-grid-mobile .btn.btn-sm {
        padding: 0.5rem 0.65rem;
        font-size: 0.8rem;
        font-weight: 600;
        border-radius: var(--border-radius-md);
        width: 100%;
        margin-top: 0.5rem;
        box-shadow: 0 2px 6px rgba(102, 126, 234, 0.25);
    }
    .items-grid-mobile .btn.btn-sm:hover {
        box-shadow: 0 3px 8px rgba(102, 126, 234, 0.35);
        transform: translateY(-1px);
    }
    .items-grid-mobile .btn.btn-sm i {
        display: inline-block;
        margin-right: 0.3rem;
        font-size: 0.75rem;
    }

    /* History: grid layout (mobile only) - Enhanced & Catchy */
    .history-grid-mobile {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        margin-left: 0;
        margin-right: 0;
    }
    .history-grid-mobile > [class*="col-"] {
        max-width: none !important;
        flex: none !important;
        width: auto !important;
        min-width: 0;
        padding: 0;
        margin-bottom: 0 !important;
    }
    .history-grid-mobile .history-card {
        border-radius: var(--border-radius-lg);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
        border: 1px solid rgba(102, 126, 234, 0.1);
        overflow: hidden;
    }
    .history-grid-mobile .history-card:active {
        transform: scale(0.97);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    }
    .history-grid-mobile .history-card .card-body {
        padding: 0.75rem;
        background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
    }
    .history-grid-mobile .history-card .card-title {
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 0.4rem;
        line-height: 1.3;
        color: #2c3e50;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .history-grid-mobile .history-card .item-image {
        height: 110px;
        object-fit: cover;
        border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    }
    .history-grid-mobile .history-card .text-muted.small,
    .history-grid-mobile .history-card p {
        font-size: 0.8rem;
        color: #6c757d;
        margin-bottom: 0.3rem;
        line-height: 1.4;
    }
    .history-grid-mobile .history-card .text-muted.small i {
        color: var(--primary);
        margin-right: 0.25rem;
    }
    .history-grid-mobile .history-card p strong {
        color: #2c3e50;
        font-weight: 600;
    }
    .history-grid-mobile .badge-resolved {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
        font-weight: 600;
        top: 6px;
        right: 6px;
        border-radius: var(--border-radius-md);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
        letter-spacing: 0.02em;
    }

    /* Enhanced hero & global mobile elements */
    .hero-section {
        min-height: 180px;
        padding: 1.5rem 0;
        background: var(--primary-gradient);
        position: relative;
        overflow: hidden;
    }
    .hero-section::before {
        opacity: 0.4;
    }
    .hero-section h1 {
        font-size: 1.6rem;
        font-weight: 700;
        margin-bottom: 0.6rem;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    }
    .hero-section .lead {
        font-size: 0.95rem;
        margin-bottom: 1rem;
        opacity: 0.95;
        font-weight: 400;
    }
    .hero-section .btn-lg {
        padding: 0.65rem 1.2rem;
        font-size: 0.9rem;
        font-weight: 600;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        border-radius: var(--border-radius-md);
    }
    .container.my-5 {
        margin-top: 1.25rem !important;
        margin-bottom: 1.25rem !important;
    }
    .row.g-3.mb-4 {
        margin-bottom: 1rem !important;
        gap: 0.75rem !important;
    }
    .form-control, .form-select {
        padding: 0.7rem 0.8rem;
        font-size: 0.9rem;
        border-radius: var(--border-radius-md);
        border: 2px solid rgba(102, 126, 234, 0.15);
    }
    .form-control:focus, .form-select:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
    }
    .input-group .input-group-text {
        padding: 0.7rem 0.8rem;
        background: var(--primary-gradient);
        border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    }
    /* History summary cards - enhanced */
    .history-summary .summary-card {
        padding: 0.75rem 1rem;
        border-radius: var(--border-radius-md);
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
        border: 1px solid rgba(102, 126, 234, 0.15);
    }
    .history-summary .summary-card h3 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--primary);
    }
    .history-summary .summary-card p {
        font-size: 0.8rem;
        font-weight: 500;
        color: #6c757d;
    }
}

/* Single column grid on very small screens */
@media (max-width: 400px) {
    /* Tighter gap between filters on index (mobile <= 400px) */
    .row.g-3.mb-4 {
        margin-bottom: 0.75rem !important;
        --bs-gutter-x: 0.35rem;
        --bs-gutter-y: 0.35rem;
    }
    .row.g-3.mb-4 > [class*="col-"] {
        padding-right: 0.35rem;
        padding-left: 0.35rem;
        margin-bottom: 0.25rem;
    }

    .items-grid-mobile {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .history-grid-mobile {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .items-grid-mobile .item-card .card-body,
    .history-grid-mobile .history-card .card-body {
        padding: 1rem;
    }
    .items-grid-mobile .card-title,
    .history-grid-mobile .history-card .card-title {
        font-size: 1rem;
    }
}

/* Additional mobile enhancements for better UX */
@media (max-width: 767px) {
    /* No items message - enhanced */
    #noItemsMessage,
    #historyEmptyState {
        padding: 2rem 1rem;
        border-radius: var(--border-radius-lg);
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        border: 2px dashed rgba(102, 126, 234, 0.3);
    }
    #noItemsMessage i,
    #historyEmptyState i {
        font-size: 3rem;
        color: var(--primary);
        opacity: 0.6;
        margin-bottom: 1rem;
    }
    #noItemsMessage h4,
    #historyEmptyState h4 {
        font-size: 1.1rem;
        font-weight: 600;
        color: #2c3e50;
        margin-bottom: 0.5rem;
    }
    #noItemsMessage p,
    #historyEmptyState p {
        font-size: 0.9rem;
        color: #6c757d;
    }

    /* Better spacing for filter section */
    .row.g-3.mb-4 .col-12,
    .row.g-3.mb-4 .col-6 {
        margin-bottom: 0.5rem;
    }

    /* Loading spinner - centered and visible */
    #loadingSpinner {
        padding: 2rem 0;
    }
    #loadingSpinner .spinner-border {
        width: 2.5rem;
        height: 2.5rem;
        border-width: 0.25rem;
    }
}

/* Admin tables: card layout on mobile so items/claims fully visible (no horizontal scroll) */
@media (max-width: 767px) {
    .admin-table-responsive .table-responsive {
        overflow: visible;
    }
    .admin-table-responsive .table thead {
        display: none;
    }
    .admin-table-responsive .table,
    .admin-table-responsive .table tbody,
    .admin-table-responsive .table tr,
    .admin-table-responsive .table td {
        display: block;
    }
    /* Admin cards (items & claims) – mobile look */
    .admin-table-responsive .table tbody tr {
        border-radius: var(--border-radius-lg);
        margin-bottom: 0.9rem;
        padding: 0.75rem 0.9rem 0.9rem;
        background: linear-gradient(135deg, #ffffff 0%, #f7f8ff 100%);
        border: 1px solid rgba(102, 126, 234, 0.18);
        box-shadow: 0 4px 10px rgba(15, 23, 42, 0.06);
    }
    .admin-table-responsive .table tbody td {
        border: none;
        padding: 0.35rem 0;
        font-size: 0.82rem;
        line-height: 1.4;
    }
    .admin-table-responsive .table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: 0.7rem;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        color: rgba(15, 23, 42, 0.6);
        display: block;
        margin-bottom: 0.12rem;
    }
    .admin-table-responsive .table tbody td.admin-item-thumb-cell {
        text-align: center;
        padding-top: 0.25rem;
        margin-bottom: 0.35rem;
    }
    .admin-table-responsive .table tbody td.admin-item-thumb-cell::before {
        content: '';
        display: none;
    }
    .admin-table-responsive .admin-item-thumb,
    .admin-table-responsive .admin-item-thumb-placeholder {
        width: 48px;
        height: 48px;
        border-radius: var(--border-radius-md);
        box-shadow: 0 2px 6px rgba(15, 23, 42, 0.18);
    }
    .admin-table-responsive .table tbody td.text-end {
        text-align: left !important;
        padding-top: 0.6rem;
        margin-top: 0.4rem;
        border-top: 1px solid rgba(148, 163, 184, 0.25);
    }
    .admin-table-responsive .table tbody td.text-end::before {
        content: 'Actions';
    }
    .admin-table-responsive .admin-item-actions {
        flex-wrap: wrap;
        gap: 0.35rem !important;
    }
    .admin-table-responsive .admin-item-actions .btn {
        font-size: 0.75rem;
        padding: 0.3rem 0.5rem;
        min-width: auto;
    }

    /* Admin dashboard header: stack and shrink on mobile */
    .container.my-5 .d-flex.align-items-center.justify-content-between.mb-4 {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        margin-bottom: 1rem !important;
    }
    .container.my-5 .d-flex.mb-4 h2 {
        font-size: 1.25rem;
        margin-bottom: 0.25rem;
    }
    .container.my-5 .d-flex.mb-4 .text-muted {
        font-size: 0.8rem;
    }
    .container.my-5 #refreshAdminBtn {
        font-size: 0.85rem;
        padding: 0.5rem 0.75rem;
    }
    /* Admin tabs smaller on mobile */
    .nav-tabs .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .table-responsive:not(.admin-table-responsive) {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-bottom: 1rem;
    }
    .table-responsive:not(.admin-table-responsive) .table {
        min-width: 600px;
    }
}

.item-image {
    height: 220px;
    object-fit: cover;
    width: 100%;
    transition: var(--transition-slow);
    position: relative;
}

.item-card:hover .item-image {
    transform: scale(1.1);
}

.item-status-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    border-radius: var(--border-radius-md);
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
}

.item-card:hover .item-status-badge {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Status Badge Colors */
.badge-lost {
    background: var(--danger-gradient) !important;
    border: 1px solid rgba(235, 51, 73, 0.3);
    color: white !important;
}

.badge-found {
    background: var(--success-gradient) !important;
    border: 1px solid rgba(56, 239, 125, 0.3);
    color: white !important;
}

.badge-resolved {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%) !important;
    border: 1px solid rgba(108, 117, 125, 0.3);
    color: white !important;
}

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
    animation: pulse 2s infinite;
}

.status-indicator.lost {
    background: var(--danger);
}

.status-indicator.found {
    background: var(--success);
}

.status-indicator.resolved {
    background: #6c757d;
}

/* Unified status badges for cards */
.badge-status {
    border-radius: var(--border-radius-md);
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.badge-status-available,
.badge-status-found {
    background: var(--success-gradient);
    color: #ffffff;
}

.badge-status-claimed {
    background: var(--warning-gradient);
    color: #4a2c00;
}

.badge-status-returned {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    color: #ffffff;
}

.badge-status-lost {
    background: var(--danger-gradient);
    color: #ffffff;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

.history-card {
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.history-card .item-image {
    height: 220px;
    object-fit: cover;
}

.history-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.08);
}

.history-summary .summary-card {
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.08));
    padding: 16px 20px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

/* Form Styles */
.form-control,
.form-select {
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius-md);
    padding: 0.875rem 1rem;
    font-size: 1rem;
    transition: var(--transition-normal);
    background: var(--white);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
    outline: none;
    background: rgba(102, 126, 234, 0.02);
}

.form-control:hover,
.form-select:hover {
    border-color: rgba(102, 126, 234, 0.3);
}

.form-label {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-text {
    font-size: 0.8rem;
    color: #6c757d;
    margin-top: 0.25rem;
}

.input-group {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.input-group .form-control {
    border-right: none;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group .input-group-text {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 0.875rem 1rem;
    transition: var(--transition-normal);
}

.input-group .form-control:focus+.input-group-text {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #6a4190 100%);
    transform: translateX(2px);
}

.form-check {
    margin-bottom: 1rem;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid rgba(102, 126, 234, 0.3);
    transition: var(--transition-normal);
}

.form-check-input:checked {
    background: var(--primary-gradient);
    border-color: var(--primary);
}

.form-check-input:focus {
    box-shadow: var(--shadow-glow);
    border-color: var(--primary);
}

.form-check-label {
    font-weight: 500;
    color: var(--dark);
    margin-left: 0.5rem;
}

/* Floating Labels */
.form-floating {
    position: relative;
}

.form-floating>.form-control,
.form-floating>.form-select {
    padding: 1rem 0.75rem;
    height: calc(3.5rem + 2px);
    line-height: 1.25;
}

.form-floating>label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1rem 0.75rem;
    pointer-events: none;
    border: 1px solid transparent;
    transform-origin: 0 0;
    transition: var(--transition-normal);
    color: #6c757d;
}

.form-floating>.form-control:focus~label,
.form-floating>.form-control:not(:placeholder-shown)~label,
.form-floating>.form-select~label {
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
    color: var(--primary);
    background: var(--white);
    padding: 0 0.25rem;
}

.form-floating>.form-control:focus~label::after,
.form-floating>.form-control:not(:placeholder-shown)~label::after,
.form-floating>.form-select~label::after {
    position: absolute;
    inset: 1rem 0.375rem;
    z-index: -1;
    height: 1.5em;
    content: "";
    background-color: var(--white);
    border-radius: var(--border-radius-md);
}

/* Button Styles */
.btn-primary {
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
    pointer-events: none;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #6a4190 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn:disabled,
.btn[disabled] {
    opacity: 0.65;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-success {
    background: var(--success-gradient);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.btn-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
    pointer-events: none;
}

.btn-success:hover::before {
    left: 100%;
}

.btn-success:hover {
    background: linear-gradient(135deg, #10997e 0%, #2bd768 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
    z-index: 0;
}

.btn-outline-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
    z-index: -1;
}

.btn-outline-primary:hover::before {
    opacity: 1;
}

.btn-outline-primary:hover {
    color: #ffffff !important;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-primary span {
    position: relative;
    z-index: 1;
}

/* Outline Success Button (used in Admin actions like "Mark Returned" / "Approve") */
.btn-outline-success {
    border: 2px solid var(--success);
    color: var(--success);
    background: transparent;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-outline-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--success-gradient);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}

.btn-outline-success:hover::before {
    opacity: 1;
}

.btn-outline-success:hover {
    color: #ffffff !important;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Outline Danger Button (used in Admin actions like "Reject") */
.btn-outline-danger {
    border: 2px solid var(--danger);
    color: var(--danger);
    background: transparent;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-outline-danger::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--danger-gradient);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}

.btn-outline-danger:hover::before {
    opacity: 1;
}

.btn-outline-danger:hover {
    color: #ffffff !important;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Google Sign-In button – Google brand colours */
.btn-google {
    background: #fff !important;
    color: #3c4043 !important;
    border: 1px solid #dadce0 !important;
    border-radius: 4px !important;
    font-weight: 500 !important;
    font-size: 14px !important;
    padding: 10px 20px !important;
    transition: background 0.2s, box-shadow 0.2s !important;
    position: relative;
    overflow: visible;
    box-shadow: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15) !important;
}

.btn-google:hover {
    background: #f8f9fa !important;
    color: #202124 !important;
    border-color: #dadce0 !important;
    box-shadow: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15) !important;
}

.btn-google:active {
    background: #f1f3f4 !important;
    box-shadow: 0 1px 2px 0 rgba(60, 64, 67, 0.3) !important;
}

.btn-google:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-google .fab.fa-google {
    color: #4285f4;
    font-size: 1.1em;
}

.btn-google:hover .fab.fa-google {
    color: #1967d2;
}

/* Enhanced Navigation Styles */
.navbar {
    backdrop-filter: blur(20px);
    background: rgba(30, 60, 114, 0.95) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(30, 60, 114, 0.98) !important;
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    font-family: var(--font-secondary);
    position: relative;
    z-index: 10;
}

.navbar-nav {
    position: relative;
    z-index: 10;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition-normal);
    position: relative;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius-md);
    margin: 0 0.25rem;
    backdrop-filter: blur(5px);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 30px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
    transition: var(--transition-normal);
}

.navbar-nav .nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.navbar-nav .nav-link:hover {
    color: var(--accent) !important;
    background: rgba(255, 215, 0, 0.1);
    transform: translateY(-2px);
}

/* Navigation dropdown styles */
.navbar-nav .dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.navbar-nav .dropdown-item {
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    transition: var(--transition-normal);
    font-weight: 500;
}

.navbar-nav .dropdown-item:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateX(5px);
}

/* Mobile navigation improvements */
.navbar-toggler {
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: var(--border-radius-md);
    padding: 0.5rem;
    transition: var(--transition-normal);
}

.navbar-toggler:hover {
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--accent);
}

.navbar-toggler:focus {
    box-shadow: var(--shadow-glow);
    border-color: var(--accent);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 215, 0, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    transition: var(--transition-normal);
}

.navbar-toggler:hover .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23ffd700' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Navigation user menu */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    transition: var(--transition-normal);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.user-avatar:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

/* Navigation breadcrumbs */
.breadcrumb {
    background: transparent;
    padding: 1rem 0;
    margin-bottom: 0;
}

.breadcrumb-item {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-item.active {
    color: var(--accent);
}

.breadcrumb-item+.breadcrumb-item::before {
    content: "›";
    color: rgba(255, 255, 255, 0.5);
    font-weight: 700;
}

/* Navigation progress indicators */
.nav-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 215, 0, 0.2);
    overflow: hidden;
}

.nav-progress-bar {
    height: 100%;
    background: var(--accent);
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: 10px;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #a8e6cf 100%);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

/* Image Preview */
#imagePreview img {
    border: 2px dashed #dee2e6;
    border-radius: 10px;
    transition: border-color 0.3s ease;
}

#imagePreview img:hover {
    border-color: #667eea;
}

/* Modal Styles */
.modal-content {
    border: none;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.95);
}

.modal-header {
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
    transition: var(--transition-normal);
}

.modal-header .btn-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

.modal-body {
    padding: 2rem;
    background: var(--white);
}

.modal-footer {
    border: none;
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
    padding: 1.5rem;
    background: var(--light);
}

.modal-dialog {
    margin: 2rem auto;
    max-width: 600px;
}

.modal-backdrop {
    backdrop-filter: blur(5px);
    background: rgba(0, 0, 0, 0.5);
}

/* Modal animations */
.modal.fade .modal-dialog {
    transform: translate(0, -50px);
    transition: var(--transition-normal);
    opacity: 0;
}

.modal.show .modal-dialog {
    transform: translate(0, 0);
    opacity: 1;
}

.modal.fade .modal-content {
    transform: scale(0.9);
    transition: var(--transition-normal);
}

.modal.show .modal-content {
    transform: scale(1);
}

/* Footer */
footer {
    margin-top: auto;
}

/* Enhanced Responsive Design */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding-left: 20px;
        padding-right: 20px;
    }
}

@media (max-width: 992px) {
    .navbar-brand {
        font-size: 1.2rem;
    }

    .college-logo {
        width: 35px;
        height: 35px;
        font-size: 1.1rem;
    }

    .college-name {
        font-size: 1.1rem;
    }

    .app-name {
        font-size: 0.8rem;
    }

    .hero-section h1 {
        font-size: 2.5rem;
    }

    .hero-section p {
        font-size: 1.1rem;
    }
}

/* Slightly shorter transitions on small screens for snappier feel */
@media (max-width: 991.98px) {
    .card, .item-card, .btn, .nav-link, .navbar-brand,
    .form-control, .form-select, .modal-content, .modal-dialog {
        transition-duration: 0.2s;
    }
}

@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
        max-width: 100%;
    }

    .hero-section {
        min-height: 200px;
        text-align: center;
        padding: 2rem 0;
    }

    .hero-section h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .hero-section p {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .item-image {
        height: 180px;
    }

    .card-body {
        padding: 1rem;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .card-text {
        font-size: 0.9rem;
    }

    /* Mobile navigation improvements */
    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        margin: 0.25rem 0;
        border-radius: 8px;
    }

    /* Mobile form improvements */
    .form-control,
    .form-select {
        font-size: 16px;
        /* Prevents zoom on iOS */
        padding: 0.75rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    /* Mobile modal improvements */
    .modal-dialog {
        margin: 1rem;
        max-width: calc(100% - 2rem);
    }

    .modal-body {
        padding: 1rem;
    }

    /* Mobile contact info */
    .contact-info {
        padding: 0.75rem;
        margin: 0.75rem 0;
    }

    .contact-info .row {
        margin-bottom: 0.5rem;
    }

    /* Mobile item cards */
    .item-card {
        margin-bottom: 1rem;
    }

    .item-card .card-body {
        padding: 0.75rem;
    }

    .item-card .row {
        margin-bottom: 0.5rem;
    }

    .item-card .row:last-child {
        margin-bottom: 0;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }

    .hero-section {
        min-height: 180px;
        padding: 1.5rem 0;
    }

    .hero-section h1 {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }

    .hero-section p {
        font-size: 0.95rem;
        margin-bottom: 1rem;
    }

    .btn-lg {
        padding: 0.75rem 1.25rem;
        font-size: 0.95rem;
    }

    .item-image {
        height: 150px;
    }

    .card-body {
        padding: 0.75rem;
    }

    .card-title {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .card-text {
        font-size: 0.85rem;
        margin-bottom: 0.75rem;
    }

    /* Mobile navbar */
    .navbar-brand {
        font-size: 1rem;
    }

    .college-logo {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }

    .college-name {
        font-size: 1rem;
    }

    .app-name {
        font-size: 0.75rem;
    }

    /* Mobile form spacing */
    .mb-3 {
        margin-bottom: 1rem !important;
    }

    .mb-4 {
        margin-bottom: 1.25rem !important;
    }

    .mb-5 {
        margin-bottom: 1.5rem !important;
    }

    /* Mobile buttons */
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .btn-group-vertical .btn {
        margin-bottom: 0.25rem;
    }

    /* Mobile modal */
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }

    .modal-header {
        padding: 0.75rem 1rem;
    }

    .modal-body {
        padding: 0.75rem;
    }

    .modal-footer {
        padding: 0.75rem 1rem;
    }

    /* Mobile contact info */
    .contact-info {
        padding: 0.5rem;
        margin: 0.5rem 0;
    }

    .contact-info h5 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .contact-info p {
        font-size: 0.85rem;
        margin-bottom: 0.25rem;
    }

    /* Mobile item details */
    .item-details .row {
        margin-bottom: 1rem;
    }

    .item-details .col-md-8,
    .item-details .col-md-4 {
        margin-bottom: 1rem;
    }

    /* Mobile search and filter */
    .input-group {
        margin-bottom: 1rem;
    }

    .form-control {
        font-size: 16px;
        padding: 0.6rem 0.75rem;
    }

    .form-select {
        font-size: 16px;
        padding: 0.6rem 0.75rem;
    }
}

@media (max-width: 400px) {
    .container {
        padding-left: 8px;
        padding-right: 8px;
    }

    .hero-section h1 {
        font-size: 1.5rem;
    }

    .hero-section p {
        font-size: 0.9rem;
    }

    .btn-lg {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .card-body {
        padding: 0.5rem;
    }

    .card-title {
        font-size: 0.95rem;
    }

    .card-text {
        font-size: 0.8rem;
    }

    .item-image {
        height: 120px;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

/* Mobile-specific improvements */
@media (max-width: 768px) {

    /* Better touch targets */
    .btn {
        min-height: 48px;
        min-width: 48px;
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .nav-link {
        min-height: 48px;
        display: flex;
        align-items: center;
        padding: 1rem 1.25rem;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    /* Improved spacing */
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    /* Better form spacing and touch interactions */
    .form-control,
    .form-select {
        margin-bottom: 1.25rem;
        font-size: 16px;
        padding: 1rem 0.875rem;
        border-radius: var(--border-radius-md);
        touch-action: manipulation;
        -webkit-appearance: none;
        -webkit-tap-highlight-color: transparent;
    }

    .form-control:focus,
    .form-select:focus {
        box-shadow: var(--shadow-glow);
    }

    /* Card improvements with mobile hover states */
    .card,
    .item-card {
        margin-bottom: 1.25rem;
        border-radius: var(--border-radius-lg);
        transition: var(--transition-fast);
    }

    .card:active,
    .item-card:active {
        transform: scale(0.98);
        box-shadow: var(--shadow-sm);
    }

    .card-body {
        padding: 1.25rem;
    }

    .item-image {
        border-radius: var(--border-radius-md);
        height: 180px;
    }

    /* Modal improvements */
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100vw - 1rem);
        border-radius: var(--border-radius-lg);
    }

    .modal-content {
        border-radius: var(--border-radius-lg);
        overflow: hidden;
    }

    /* Contact info mobile styling */
    .contact-info {
        border-radius: var(--border-radius-md);
        margin: 1rem 0;
        padding: 1rem;
        background: var(--light);
        border: 1px solid rgba(0, 0, 0, 0.05);
    }

    .contact-info .row {
        margin-bottom: 0.875rem;
    }

    .contact-info .row:last-child {
        margin-bottom: 0;
    }

    /* Hamburger: faster collapse to reduce lag */
    .navbar-collapse.collapsing {
        transition-duration: 0.12s;
        transition-timing-function: ease-out;
    }
    .navbar-collapse.show {
        transition-duration: 0.15s;
    }
    .navbar-toggler {
        will-change: transform;
    }
    .navbar-collapse {
        background: rgba(30, 60, 114, 0.95);
        border-radius: var(--border-radius-lg);
        margin-top: 1rem;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
        transform: translateZ(0);
        backface-visibility: hidden;
    }

    .navbar-nav {
        margin: 0;
    }

    .navbar-nav .nav-item {
        margin-bottom: 0.5rem;
    }

    .navbar-nav .nav-item:last-child {
        margin-bottom: 0;
    }

    /* Hero section mobile */
    .hero-section {
        min-height: 280px;
        padding: 2rem 0;
    }

    .hero-section h1 {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }

    /* Search and filter mobile */
    .input-group {
        margin-bottom: 1rem;
    }

    .input-group .form-control {
        margin-bottom: 0;
    }

    /* Item cards mobile specific */
    .item-status-badge {
        top: 8px;
        right: 8px;
        padding: 0.375rem 0.75rem;
        font-size: 0.7rem;
    }

    /* Better mobile scrolling */
    * {
        -webkit-overflow-scrolling: touch;
    }

    /* Mobile filter menu: button and panel */
    .filter-search-row {
        align-items: stretch;
    }
    .filters-toggle-btn {
        min-width: 48px;
        padding: 0.6rem 0.75rem;
        border-radius: var(--border-radius-md);
        font-weight: 600;
        border-width: 2px;
    }
    .filters-toggle-btn[aria-expanded="true"] {
        background: var(--primary-gradient);
        color: #fff !important;
        border-color: transparent;
    }
    .filters-toggle-btn .filters-toggle-text {
        margin-left: 0.35rem;
    }
    #filterMobilePanel.filter-mobile-panel.collapse.show,
    #filterMobilePanel.filter-mobile-panel.collapsing {
        margin-top: 0.5rem;
        padding: 0.75rem;
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.06), rgba(118, 75, 162, 0.06));
        border-radius: var(--border-radius-md);
        border: 1px solid rgba(102, 126, 234, 0.15);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    }
    #filterMobilePanel .form-select {
        font-size: 0.9rem;
        padding: 0.6rem 0.75rem;
    }
}

    /* Touch-friendly hover states */
    .item-card:hover,
    .btn:hover {
        transform: none;
    }

    .item-card:active {
        transform: scale(0.98);
    }

    .btn:active {
        transform: translateY(1px);
    }
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
}

.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%) 1;
}

/* Empty State Styles */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Search and Filter Styles */
.input-group-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.form-control:focus+.input-group-text {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}

/* Enhanced Tab Styles */
.nav-tabs {
    border: none;
    background: var(--light);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem;
    margin-bottom: 1.5rem;
}

.nav-tabs .nav-link {
    border: none;
    color: #6c757d;
    font-weight: 500;
    transition: var(--transition-normal);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1.25rem;
    background: transparent;
    position: relative;
    overflow: hidden;
}

.nav-tabs .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
}

.nav-tabs .nav-link:hover::before {
    opacity: 0.1;
}

.nav-tabs .nav-link.active {
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.nav-tabs .nav-link:hover:not(.active) {
    color: var(--primary);
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-1px);
}

.tab-content {
    animation: fadeIn 0.5s ease-in;
}

/* Enhanced Pagination */
.pagination {
    margin-bottom: 0;
}

.page-link {
    border: none;
    color: var(--primary);
    padding: 0.75rem 1rem;
    margin: 0 0.25rem;
    border-radius: var(--border-radius-md);
    transition: var(--transition-normal);
    font-weight: 500;
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.page-link:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.page-item.active .page-link {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.page-item.disabled .page-link {
    background: var(--light);
    color: #6c757d;
    opacity: 0.5;
}

/* Enhanced Navigation Pills */
.nav-pills .nav-link {
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1.25rem;
    margin: 0 0.25rem;
    transition: var(--transition-normal);
    font-weight: 500;
    background: var(--light);
    color: var(--dark);
}

.nav-pills .nav-link:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-pills .nav-link.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Admin dashboard thumbnails */
.admin-item-thumb-cell {
    width: 96px;
    text-align: center;
}

.admin-item-thumb {
    width: 72px;
    height: 72px;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    background-color: #f8f9fa;
}

.admin-item-thumb-placeholder {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-md);
    border: 1px dashed rgba(0, 0, 0, 0.1);
    background-color: #f8f9fa;
    font-size: 1.5rem;
}

.admin-item-full-image {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    background-color: #f8f9fa;
    box-shadow: var(--shadow-md);
}

.admin-item-meta {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    background-color: rgba(248, 249, 250, 0.85);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.02);
}

#refreshAdminBtn {
    transition: var(--transition-fast);
    border-color: rgba(102, 126, 234, 0.35);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

#refreshAdminBtn:hover,
#refreshAdminBtn:focus {
    background: var(--primary-gradient);
    color: var(--white);
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

#refreshAdminBtn .fas {
    transition: transform var(--transition-fast);
}

#refreshAdminBtn:hover .fas,
#refreshAdminBtn:focus .fas {
    transform: rotate(90deg);
}

/* Admin claims table */
.admin-claims-table .admin-item-thumb-cell {
    width: 80px;
}

.admin-claims-table td,
.admin-claims-table th {
    vertical-align: middle;
}

/* Admin table action buttons */
.admin-item-actions {
    flex-wrap: wrap;
}

.admin-item-actions .btn {
    min-width: 110px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}





/* Mark Returned Button Styling */
.btn-mark-returned {
    transition: all 0.3s ease;
    position: relative;
    font-weight: 600;
    z-index: 1;
}

.btn-mark-returned:hover {
    background-color: #198754 !important;
    color: #ffffff !important;
    border-color: #198754 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(25, 135, 84, 0.3);
}

.btn-mark-returned:hover span {
    color: #ffffff !important;
}

.btn-mark-returned:active {
    transform: translateY(0);
}