/* Dark theme (default) */
:root {
    --bg: #0b0f14;
    --bg-raised: #121821;
    --card: #141b26;
    --text: #e6edf3;
    --muted: #9fb0c3;
    --accent: #4ea1ff;
    --accent-glow: rgba(78, 161, 255, 0.3);
    --accent-hover: #7ebaff;
    --border: #223042;
    --shadow: 0 8px 20px rgba(0, 0, 0, .5);
    --font-sans: system-ui, -apple-system, Segoe UI, Roboto, Arial, Helvetica, sans-serif;
    --header-bg: rgba(11, 15, 20, 0.8);
    --gradient-1: #101826;
    --gradient-2: #0e1522;
    --hero-gradient-start: #fff;
    --hero-gradient-end: #9fb0c3;
    --btn-primary-hover: #3b8ceb;
    color-scheme: dark;
}

/* Light theme */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #f8fafc;
        --bg-raised: #ffffff;
        --card: #ffffff;
        --text: #1e293b;
        --muted: #64748b;
        --accent: #2563eb;
        --accent-glow: rgba(37, 99, 235, 0.2);
        --accent-hover: #1d4ed8;
        --border: #e2e8f0;
        --shadow: 0 8px 20px rgba(0, 0, 0, .1);
        --header-bg: rgba(248, 250, 252, 0.8);
        --gradient-1: #e0e7ff;
        --gradient-2: #dbeafe;
        --hero-gradient-start: #1e293b;
        --hero-gradient-end: #475569;
        --btn-primary-hover: #1d4ed8;
        color-scheme: light;
    }
}

* {
    box-sizing: border-box;
}

html {
    scrollbar-gutter: stable;
}

html,
body {
    height: 100%;
    margin: 0;
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
}

body {
    background: radial-gradient(1200px 800px at 10% -10%, var(--gradient-1) 0%, transparent 60%),
        radial-gradient(1000px 800px at 100% 0%, var(--gradient-2) 0%, transparent 60%),
        var(--bg);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 0;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn, button {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.25;
    font-family: inherit;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    vertical-align: middle;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 12px var(--accent-glow);
}

#blazor-error-ui {
    background: var(--bg-raised);
    color: var(--text);
    bottom: 0;
    border-top: 1px solid var(--border);
    box-shadow: 0 -6px 16px rgba(0, 0, 0, 0.35);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.75rem 3rem 0.75rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    font-size: 0.95rem;
    line-height: 1.4;
}

#blazor-error-ui .reload {
    margin-left: 0.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    border: 1px solid transparent;
    background: var(--accent);
    color: white;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 12px var(--accent-glow);
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

#blazor-error-ui .reload:hover {
    background: var(--btn-primary-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--accent-glow);
}

#blazor-error-ui .reload:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    text-decoration: none;
    border: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

#blazor-error-ui .dismiss:hover {
    color: var(--text);
    border-color: var(--border);
    background-color: rgba(255, 255, 255, 0.06);
}

@media (prefers-color-scheme: light) {
    #blazor-error-ui {
        box-shadow: 0 -6px 16px rgba(15, 23, 42, 0.12);
    }
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--accent-glow);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
    border-radius: 6px;
    line-height: 1.25;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.25rem;
    border-radius: 10px;
    line-height: 1.25;
}

.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-outline-secondary {
    background: transparent;
    border-color: var(--border);
    color: var(--muted);
}

.btn-outline-secondary:hover {
    border-color: var(--muted);
    color: var(--text);
}

.btn-danger {
    background: #ff4e4e;
    color: white;
}

.btn-danger:hover {
    background: #e63e3e;
    color: white;
    transform: translateY(-1px);
}

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background: #ffca2c;
    color: #212529;
    transform: translateY(-1px);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    color: white;
    transform: translateY(-1px);
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.03em;
}

.brand span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    color: var(--muted);
    font-weight: 500;
}

.nav-logout-btn {
    padding: 8px 16px;
    margin-left: 10px;
    font-size: 0.9rem;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    flex-shrink: 0;
    border-radius: 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.nav-toggle-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}

.icon-white {
    filter: invert(1);
}

@media (prefers-color-scheme: light) {
    .icon-white {
        filter: none;
    }
}

.mobile-home-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    flex-shrink: 0;
    border-radius: 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    margin-left: auto;
    margin-right: 8px;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.home-icon {
    width: 20px;
    height: 20px;
}

.mobile-home-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.nav-toggle.open .nav-toggle-icon {
    transform: rotate(90deg);
}

.nav-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

@media (max-width: 840px) {
    .nav-toggle {
        display: inline-flex;
    }

    .mobile-home-btn {
        display: inline-flex;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 12px);
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 16px 20px;
        background: var(--bg-raised);
        border: 1px solid var(--border);
        border-radius: 12px;
        box-shadow: var(--shadow);
        z-index: 10;
    }

    .nav-links.nav-open {
        display: flex;
    }

    .nav-links a {
        width: 100%;
    }

    .nav-links form {
        width: 100%;
    }

    .nav-links .btn {
        width: 100%;
        text-align: left;
        margin-left: 0;
    }
}

/* Admin page (responsive tables + tabs) */
.admin-page .tabs-header {
    flex-wrap: wrap;
}

.admin-page .admin-tab {
    white-space: nowrap;
}

.admin-page .admin-card {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    display: block;
    padding: 0;
    align-items: stretch;
}

.admin-page .admin-table {
    width: max-content;
    min-width: 100%;
}

.admin-page .admin-scan-controls {
    flex-wrap: wrap;
    gap: 8px;
}

@media (max-width: 720px) {
    .admin-page .tabs-container {
        margin: 12px auto;
        padding: 0 8px;
    }

    .admin-page .tabs-header {
        gap: 6px;
    }

    .admin-page .admin-tab {
        flex: 1 1 140px;
        padding: 8px 10px;
        font-size: 0.9rem;
        text-align: center;
    }

    .admin-page .admin-card {
        border-radius: 12px;
    }

    .admin-page .admin-table th,
    .admin-page .admin-table td {
        padding: 8px;
    }

    .admin-page .admin-scan-controls {
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-page .admin-scan-controls > div {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .admin-page .admin-tab {
        flex-basis: 120px;
        font-size: 0.85rem;
    }

    .admin-page .admin-table th,
    .admin-page .admin-table td {
        padding: 6px;
        font-size: 0.85rem;
    }
}

/* Hero Section */
.hero {
    padding: 80px 0 40px;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    /* Increase line-height to prevent descenders like 'g' from being clipped */
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(to right, var(--hero-gradient-start), var(--hero-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border: none;
    outline: none;
    box-shadow: none;
    /* Add a small padding buffer to ensure no visual cut-off in some renderers */
    padding-bottom: 4px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--muted);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-images {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-images img {
    max-width: 450px;
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

.hero-images img:hover {
    transform: translateY(-5px);
}

/* Sections */
section {
    padding: 0px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-title p {
    color: var(--muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card .btn {
    margin-top: auto;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--accent);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.card p {
    color: var(--muted);
    line-height: 1.6;
}

/* Product Showcase */
.product-showcase {
    margin-top: 0px;
}

.product-item {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

.product-media {
    width: 100%;
    max-width: 600px;
    margin-bottom: 32px;
}

.product-media img {
    width: 100%;
    height: auto;
    display: block;
    margin-bottom: 20px;
}

.product-content {
    width: 100%;
    max-width: 800px;
}

.product-content h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    margin-top: 0;
}

.product-tagline {
    font-size: 1.25rem;
    color: var(--accent);
    margin-bottom: 24px;
    font-weight: 500;
}

.product-description {
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 32px;
}

.product-features {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.product-features h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text);
}

.product-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.product-features li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--muted);
}

.product-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.product-actions {
    margin-top: 32px;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: 80px;
    text-align: center;
    color: var(--muted);
}

.footer-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.footer-content p {
    margin: 0;
}

.calculator-footer-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.calculator-footer-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
}

/* Search */
.search-container {
    margin-bottom: 32px;
    text-align: center;
}

.search-input {
    width: 100%;
    max-width: 500px;
    padding: 14px 20px;
    font-size: 1rem;
    font-family: var(--font-sans);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input::placeholder {
    color: var(--muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.no-results {
    text-align: center;
    color: var(--muted);
    font-size: 1.1rem;
    margin-top: 40px;
}

/* Tool Converter Components */
.converter-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin: 0 auto;
    max-width: 800px;
}

.converter-card.narrow {
    max-width: 600px;
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    background-color: transparent;
    transition: border-color 0.2s, background-color 0.2s;
}

.upload-area:hover {
    border-color: var(--accent);
    background-color: rgba(255, 255, 255, 0.02);
}

.file-input-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}
/* ASP.NET validation */
.validation-message {
    color: #ff4e4e;
    font-size: 0.875rem;
    margin-top: 4px;
    display: block;
}

.invalid {
    border-color: #ff4e4e !important;
}

.valid.modified:not([type=checkbox]) {
    border-color: #26b050 !important;
}

/* Camera Overlay Styles */
.camera-overlay {
    position: fixed;
    inset: 0;
    z-index: 1055;
    background: #000;
    overflow: hidden;
}

.camera-overlay video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.camera-overlay .frame {
    position: absolute;
    border: 3px solid rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.25) inset;
    border-radius: 8px;
    pointer-events: none;
}

.camera-overlay .shade {
    position: absolute;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

.camera-overlay .overlay-btn {
    position: fixed;
    z-index: 2;
    background: rgba(255, 255, 255, 0.95);
    color: #000;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 999px;
    padding: 0.5rem 0.75rem;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.camera-overlay .overlay-btn.round {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    padding: 0;
    position: fixed;
}

.camera-overlay #closeCameraBtn {
    top: 16px;
    right: 16px;
}

.camera-overlay #captureBtn {
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.camera-overlay .overlay-btn.round img {
    width: 32px;
    height: 32px;
}

@keyframes capturePulse {
    0%   { transform: translateX(-50%) scale(1); box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 0 rgba(255,255,255,0.0); }
    20%  { transform: translateX(-50%) scale(0.85); box-shadow: 0 6px 16px rgba(0,0,0,0.35), 0 0 24px 4px rgba(255,255,255,0.85); }
    60%  { transform: translateX(-50%) scale(1.08); box-shadow: 0 4px 12px rgba(0,0,0,0.3), 0 0 16px 2px rgba(255,255,255,0.5); }
    100% { transform: translateX(-50%) scale(1); box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 0 rgba(255,255,255,0.0); }
}

@keyframes captureRing {
    0%   { transform: scale(1); opacity: 0.7; }
    100% { transform: scale(2.2); opacity: 0; }
}

.camera-overlay #captureBtn.shutter {
    animation: capturePulse 420ms ease-out;
}

.camera-overlay #captureBtn.shutter::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 3px solid rgba(255, 255, 255, 0.95);
    pointer-events: none;
    animation: captureRing 520ms ease-out;
}

@keyframes focusPulse {
    0%   { transform: scale(0.8); opacity: 1; }
    50%  { transform: scale(1.1); opacity: 0.8; }
    100% { transform: scale(1); opacity: 0; }
}

.processing-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.processing-overlay.active {
    display: flex;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.processing-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
    width: 100%;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text);
}

.form-control {
    display: block;
    width: 100%;
    padding: 10px 16px;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text);
    background-color: var(--bg);
    background-clip: padding-box;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}

.form-control:focus {
    color: var(--text);
    background-color: var(--bg);
    border-color: var(--accent);
    outline: 0;
    box-shadow: 0 0 0 0.25rem var(--accent-glow);
}

.form-control-lg {
    padding: 12px 20px;
    font-size: 1.25rem;
    border-radius: 10px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    margin-bottom: 1.5rem;
}

.checkbox-group input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border: 1px solid transparent;
}

.alert-danger {
    background-color: rgba(255, 78, 78, 0.1);
    border-color: rgba(255, 78, 78, 0.2);
    color: #ff4e4e;
}

.alert-success {
    background-color: rgba(38, 176, 80, 0.1);
    border-color: rgba(38, 176, 80, 0.2);
    color: #26b050;
}

.alert-info {
    background-color: rgba(78, 161, 255, 0.1);
    border-color: rgba(78, 161, 255, 0.2);
    color: var(--accent);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-color: rgba(255, 193, 7, 0.2);
    color: #ffc107;
}

.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 4px;
}

.bg-secondary {
    background-color: var(--muted);
}

hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 1.5rem 0;
    width: 100%;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1100;
    backdrop-filter: blur(4px);
    padding: 20px;
}

.modal-container {
    background: var(--bg-raised);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border);
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow);
    position: relative;
    animation: modalAppear 0.3s ease-out;
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes modalAppear {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.btn-close {
    background: transparent;
    border: 0;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--muted);
    cursor: pointer;
    padding: 0;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 1.5rem;
    height: 1.5rem;
}

.btn-close:hover {
    color: var(--text);
}

.btn-close::before {
    content: "×";
}

/* Scan image lightbox */
.scan-image {
    cursor: zoom-in;
}

.scan-lightbox {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.85);
    z-index: 2000;
    backdrop-filter: blur(6px);
}

.scan-lightbox.open {
    display: flex;
}

.scan-lightbox__img {
    max-width: min(100%, 1200px);
    max-height: 90vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
    background: rgba(0, 0, 0, 0.2);
}

.scan-lightbox__close {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.scan-lightbox__close:hover {
    transform: scale(1.05);
    border-color: rgba(255, 255, 255, 0.45);
    background: rgba(0, 0, 0, 0.8);
}

/* Bootstrap-like Utility Classes */
.d-flex {
    display: flex;
}

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.flex-column {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.justify-content-start {
    justify-content: flex-start;
}

.justify-content-end {
    justify-content: flex-end;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.justify-content-around {
    justify-content: space-around;
}

.align-items-start {
    align-items: flex-start;
}

.align-items-end {
    align-items: flex-end;
}

.align-items-center {
    align-items: center;
}

.align-items-stretch {
    align-items: stretch;
}

.w-100 {
    width: 100%;
}

.text-center {
    text-align: center;
}

.text-uppercase {
    text-transform: uppercase;
}

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-3 { margin: 1rem; }
.m-4 { margin: 1.5rem; }
.m-5 { margin: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 3rem; }

.ms-0 { margin-left: 0; }
.ms-1 { margin-left: 0.25rem; }
.ms-2 { margin-left: 0.5rem; }
.ms-3 { margin-left: 1rem; }
.ms-4 { margin-left: 1.5rem; }
.ms-5 { margin-left: 3rem; }

.me-0 { margin-right: 0; }
.me-1 { margin-right: 0.25rem; }
.me-2 { margin-right: 0.5rem; }
.me-3 { margin-right: 1rem; }
.me-4 { margin-right: 1.5rem; }
.me-5 { margin-right: 3rem; }

.mx-auto { margin-left: auto; margin-right: auto; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }
.gap-5 { gap: 3rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 1rem; padding-bottom: 1rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }

.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 1rem; padding-right: 1rem; }
.px-4 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-5 { padding-left: 3rem; padding-right: 3rem; }