*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Premium High-Contrast Light Theme (Clean Pearl) */
    --md-bg: #ffffff;
    --md-on-bg: #0f172a; /* Deep Charcoal for visibility */
    --md-surface-container: #ffffff;
    --md-surface-container-low: #f8fafc;
    --md-on-surface: #1e293b;
    --md-on-surface-variant: #334155; /* Darker variant for legibility */
    --md-outline: #cbd5e1;
    --md-primary: #6d28d9; /* Deeper Violet for better white text contrast */
    --md-on-primary: #ffffff;
    --md-primary-container: #ede9fe;
    --md-on-primary-container: #4c1d95;
    --md-secondary: #be185d; /* Deeper Rose */
    --md-on-secondary: #ffffff;
    --md-secondary-container: #ffe4e6;
    --md-on-secondary-container: #9d174d;
    --md-tertiary: #0369a1; /* Deeper Sky Blue */
    --md-on-tertiary: #ffffff;
    --md-error: #b91c1c;
    --md-on-error: #ffffff;
    --md-shadow-1: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --md-shadow-2: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --md-radius-xl: 32px;
    --md-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --md-duration: 300ms;
}

body.dark-theme {
    /* Solid Dark Theme (Obsidian) */
    --md-bg: #0f172a;
    --md-on-bg: #f8fafc;
    --md-surface-container: #1e293b;
    --md-surface-container-low: #0f172a;
    --md-on-surface: #f1f5f9;
    --md-on-surface-variant: #94a3b8;
    --md-outline: #334155;
    --md-primary: #8b5cf6;
    --md-primary-container: #4c1d95;
    --md-on-primary-container: #ede9fe;
    --md-secondary-container: #831843;
    --md-on-secondary-container: #fce7f3;
}

/* 100% Solid Premium Surface (Zero Transparency, No Gloss) */
.premium-glass {
    background: var(--md-surface-container) !important;
    background-color: var(--md-surface-container) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: 1px solid var(--md-outline);
    box-shadow: var(--md-shadow-1);
    transition: all var(--md-duration) var(--md-ease);
    position: relative;
    border-radius: 24px;
    opacity: 1 !important;
}

.premium-glass:hover {
    box-shadow: var(--md-shadow-2);
    transform: translateY(-4px);
    border-color: var(--md-primary);
    background-color: var(--md-surface-container);
}

.premium-glass:hover {
    border-color: color-mix(in srgb, var(--md-primary) 30%, transparent);
    box-shadow: 0 20px 40px -12px color-mix(in srgb, var(--md-primary) 12%, transparent);
    transform: translateY(-4px);
}

/* Attractive Album Card Components */
.album-card-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--md-primary), var(--md-tertiary));
    opacity: 0.6;
}

.status-badge {
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: 99px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.status-verified {
    background: #dcfce7;
    color: #15803d;
    border: 1px solid #bbf7d0;
}

.status-missing {
    background: #fee2e2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.id-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    background: var(--md-surface-container-low);
    color: var(--md-on-surface-variant);
    padding: 2px 8px;
    border-radius: 6px;
    border: 1px solid var(--md-outline);
}

/* Skeleton Loading State */
.skeleton {
    background: linear-gradient(90deg, 
        color-mix(in srgb, var(--md-surface-container) 80%, transparent) 25%, 
        color-mix(in srgb, var(--md-surface-container-low) 90%, transparent) 50%, 
        color-mix(in srgb, var(--md-surface-container) 80%, transparent) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 24px;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Staggered Entry Animation */
.staggered-item {
    opacity: 0;
    animation: fadeInUp 0.8s var(--md-ease) forwards;
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(20px) scale(0.98); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0) scale(1); 
    }
}

.dark-theme .premium-glass {
    background: var(--md-surface-container) !important;
    background-color: var(--md-surface-container) !important;
    border-color: var(--md-outline);
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}
.animate-float { animation: float 5s ease-in-out infinite; }

html {
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--md-bg);
    color: var(--md-on-bg) !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.1);
    border-radius: 20px;
}
.dark-theme ::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
}

/* Premium Shimmer Button Effect */
.btn-shimmer {
    position: relative;
    overflow: hidden;
}

.btn-shimmer::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -150%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: rotate(45deg);
    transition: 0.8s;
}

.btn-shimmer:hover::after {
    left: 150%;
}

/* Premium styling for dropdowns to ensure theme compatibility */
select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23a855f7' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.5rem !important;
    color: var(--md-on-bg) !important;
    font-weight: 700;
}

/* Fix for invisible text in native dropdown menus during dark mode */
select option {
    background-color: var(--md-surface-container);
    color: var(--md-on-bg) !important;
    padding: 12px;
    font-weight: 500;
}

input:not([type="checkbox"]):not([type="radio"]) {
    color: var(--md-on-bg) !important;
}

.album-filter-shell {
    position: relative;
}

.album-filter-clear-btn {
    position: absolute;
    top: 50%;
    right: 8px;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 9999px;
    background: var(--md-surface-container);
    color: var(--md-on-bg);
    border: 1px solid var(--md-outline);
    cursor: pointer;
    transition: all var(--md-duration) var(--md-ease);
}

.album-filter-clear-btn:hover,
.album-filter-clear-btn:focus-visible {
    background: var(--md-error);
    color: white;
    outline: none;
}

.album-filter-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: invert(var(--calendar-invert));
    margin-right: 24px;
}

.album-page-btn {
    min-width: 38px;
    height: 38px;
    padding: 0 14px;
    border: 1px solid color-mix(in srgb, var(--md-outline) 14%, transparent);
    border-radius: 9999px;
    background: var(--md-surface-container);
    color: var(--md-on-bg);
    font: 600 0.875rem var(--font-sans);
    cursor: pointer;
    transition: all var(--md-duration) var(--md-ease);
}

.album-page-btn:hover:not(:disabled),
.album-page-btn:focus-visible {
    transform: scale(1.1);
    border-color: var(--md-primary);
    color: var(--md-primary);
    box-shadow: var(--md-shadow-1);
    outline: none;
}

.album-page-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.album-page-btn-active {
    background: var(--md-primary);
    color: var(--md-on-primary);
    border-color: var(--md-primary);
    box-shadow: 0 8px 20px color-mix(in srgb, var(--md-primary) 40%, transparent);
}

/* Force consistent themed backgrounds for native controls */
#albumsPerPageSelect,
#customPerPageInput,
#mobileFilterToggle,
.album-filter-input,
.album-filter-clear-btn {
    background-color: var(--md-surface-container-low) !important;
    color: var(--md-on-bg) !important;
    border-color: color-mix(in srgb, var(--md-outline) 70%, transparent) !important;
}

body.dark-theme #albumsPerPageSelect,
body.dark-theme #customPerPageInput,
body.dark-theme #mobileFilterToggle,
body.dark-theme .album-filter-input,
body.dark-theme .album-filter-clear-btn {
    background: var(--md-surface-container-low) !important;
    background-color: var(--md-surface-container-low) !important;
    color: var(--md-on-bg) !important;
    -webkit-text-fill-color: var(--md-on-bg) !important;
    border-color: color-mix(in srgb, var(--md-outline) 85%, transparent) !important;
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--md-outline) 20%, transparent);
}

body.dark-theme #albumsPerPageSelect,
body.dark-theme #customPerPageInput,
body.dark-theme .album-filter-input {
    appearance: none;
    color-scheme: dark;
}

body.dark-theme #albumsPerPageSelect option {
    background: var(--md-surface-container) !important;
    color: var(--md-on-bg) !important;
}

body.dark-theme #albumsPerPageSelect,
body.dark-theme #customPerPageInput,
body.dark-theme #albumNameFilter,
body.dark-theme #albumDateFilter,
body.dark-theme #albumEmailFilter {
    background-image: none !important;
}

body.dark-theme #albumNameFilter,
body.dark-theme #albumDateFilter,
body.dark-theme #albumEmailFilter,
body.dark-theme #customPerPageInput {
    caret-color: var(--md-on-bg) !important;
}

body.dark-theme #albumNameFilter:-webkit-autofill,
body.dark-theme #albumDateFilter:-webkit-autofill,
body.dark-theme #albumEmailFilter:-webkit-autofill,
body.dark-theme #customPerPageInput:-webkit-autofill {
    -webkit-text-fill-color: var(--md-on-bg) !important;
    -webkit-box-shadow: 0 0 0 1000px var(--md-surface-container-low) inset !important;
    box-shadow: 0 0 0 1000px var(--md-surface-container-low) inset !important;
}

body.dark-theme #albumDateFilter::-webkit-datetime-edit,
body.dark-theme #albumDateFilter::-webkit-datetime-edit-fields-wrapper,
body.dark-theme #albumDateFilter::-webkit-datetime-edit-text,
body.dark-theme #albumDateFilter::-webkit-datetime-edit-month-field,
body.dark-theme #albumDateFilter::-webkit-datetime-edit-day-field,
body.dark-theme #albumDateFilter::-webkit-datetime-edit-year-field {
    color: var(--md-on-bg) !important;
    background: transparent !important;
}

body.dark-theme #albumDateFilter::-webkit-calendar-picker-indicator {
    filter: invert(1) brightness(1.2);
}

body.dark-theme .album-filter-input::placeholder {
    color: var(--md-on-surface-variant) !important;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--md-primary) 3%, transparent), transparent 24%),
        radial-gradient(circle at 14% 18%, color-mix(in srgb, var(--md-primary) 6%, transparent), transparent 30%);
    opacity: 0.88;
    z-index: -2;
}

.blob {
    animation: drift 14400s infinite ease-in-out alternate;
    mix-blend-mode: multiply;
}

body.dark-theme .blob {
    mix-blend-mode: screen;
}

.blob-1 {
    background: radial-gradient(circle, var(--md-primary) 0%, transparent 60%);
}

.blob-2 {
    background: radial-gradient(circle, var(--md-tertiary) 0%, transparent 60%);
    animation-delay: -12s;
}

@keyframes drift {
    0% { transform: translateY(0) translateX(0) scale(1); }
    100% { transform: translateY(15%) translateX(-5%) scale(1.1); }
}

.screen {
    display: none;
    opacity: 0;
    transition: opacity var(--md-duration) ease;
}

.screen.active {
    display: block;
    opacity: 1;
}

#loginScreen.active {
    display: flex;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 40px;
    padding: 0 1.5rem;
    border: none;
    border-radius: 9999px;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--md-duration) var(--md-ease);
    outline: none;
}

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

.btn:active {
    transform: scale(0.95);
}

.btn-primary {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
}

.btn-outline {
    background-color: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
}

.btn-danger {
    background-color: var(--md-error);
    color: var(--md-on-error);
}

.btn-sm {
    height: 32px;
    padding: 0 1rem;
    font-size: 0.75rem;
}

.btn-close {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 9999px;
    background-color: color-mix(in srgb, var(--md-on-surface-variant) 15%, transparent);
    color: var(--md-on-surface-variant);
}

.btn-close:hover {
    background-color: color-mix(in srgb, var(--md-on-surface-variant) 20%, transparent);
    color: var(--md-on-bg);
}

.form-group label {
    display: none;
}

.album-card {
    background-color: var(--md-surface-container);
    border-radius: var(--md-radius-lg);
    padding: 1.5rem;
    min-height: 18rem;
    cursor: pointer;
    transition: all var(--md-duration) var(--md-ease);
    box-shadow: var(--md-shadow-1);
    display: flex;
    flex-direction: column;
}

.album-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--md-shadow-2);
    background-color: color-mix(in srgb, var(--md-surface-container) 95%, black);
}

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

.album-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.album-card-title {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--md-on-bg);
}

.album-card-code {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background-color: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.album-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    margin-bottom: 1rem;
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
}

.album-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.album-card-meta svg {
    width: 18px;
    height: 18px;
    color: var(--md-primary);
}

.album-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: auto;
}

.file-drop.dragover {
    border-color: var(--md-primary);
    background-color: color-mix(in srgb, var(--md-primary) 5%, var(--md-bg));
}

.file-drop.dragover .drop-icon {
    color: var(--md-primary);
}

.modal-overlay {
    opacity: 0;
    visibility: hidden;
    transition: all var(--md-duration) ease;
    background-color: var(--md-bg) !important; /* Matches site background, 100% solid */
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal {
    transform: translateY(20px) scale(0.95);
}

.modal-overlay:not(.hidden) .modal {
    transform: translateY(0) scale(1);
}

.frame-mappings {
    scrollbar-width: thin;
}

#albumsGrid {
    scrollbar-width: thin;
}

#albumsGrid::-webkit-scrollbar,
.frame-mappings::-webkit-scrollbar,
.modal::-webkit-scrollbar {
    width: 10px;
}

#albumsGrid::-webkit-scrollbar-track,
.frame-mappings::-webkit-scrollbar-track,
.modal::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--md-surface-container-low) 72%, transparent);
    border-radius: 9999px;
}

#albumsGrid::-webkit-scrollbar-thumb,
.frame-mappings::-webkit-scrollbar-thumb,
.modal::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--md-primary) 38%, var(--md-outline));
    border-radius: 9999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

#albumsGrid::-webkit-scrollbar-thumb:hover,
.frame-mappings::-webkit-scrollbar-thumb:hover,
.modal::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--md-primary) 52%, var(--md-outline));
    background-clip: padding-box;
}

.frame-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 120px 120px auto auto;
    gap: 1rem;
    align-items: center;
    background-color: var(--md-bg);
    border-radius: var(--md-radius-sm);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

.frame-row span {
    color: var(--md-on-bg);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.frame-row input {
    width: 100%;
    height: 40px;
    padding: 0 1rem;
    background-color: var(--md-surface-container-low);
    border: none;
    border-bottom: 1px solid var(--md-outline);
    border-radius: 8px 8px 0 0;
    color: var(--md-on-bg);
    font-family: var(--font-mono);
    font-weight: 500;
    text-align: center;
    outline: none;
}

.frame-row input:focus {
    border-bottom: 2px solid var(--md-primary);
    background-color: var(--md-surface-container);
}

.new-frame-row {
    grid-template-columns: minmax(0, 1fr) 120px 120px;
}

.detail-info {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 1rem;
    font-size: 1rem;
}

.detail-label {
    color: var(--md-on-surface-variant);
    font-weight: 400;
}

.detail-info span:not(.detail-label) {
    display: block;
    min-width: 0;
    font-family: var(--font-mono);
    color: var(--md-on-bg);
    font-weight: 500;
    overflow-wrap: anywhere;
    word-break: break-word;
    white-space: normal;
}

* {
    scrollbar-width: thin;
    scroll-behavior: smooth;
}

.toast {
    pointer-events: none;
}

.toast.show {
    opacity: 1 !important;
    transform: translateX(-50%) translateY(0) scale(1) !important;
}

.toast.success {
    border-left: 4px solid #689f38;
}

.toast.error {
    border-left: 4px solid var(--md-error);
}

.error-text {
    color: var(--md-error);
    font-size: 0.875rem;
    font-weight: 500;
}

.help-text {
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    line-height: 1.5;
}

.icon-sm {
    width: 18px;
    height: 18px;
}

.icon-md {
    width: 22px;
    height: 22px;
}

.album-card-action {
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.album-card-action::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent 55%);
    opacity: 0;
    transition: opacity var(--md-duration) var(--md-ease);
    pointer-events: none;
}

.album-card-action:hover::after,
.album-card-action:focus-visible::after {
    opacity: 1;
}

.album-card-action .icon-md {
    transition: transform var(--md-duration) var(--md-ease);
}

.album-card-action:hover .icon-md,
.album-card-action:focus-visible .icon-md {
    transform: scale(1.08);
}

.album-card-action:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--md-primary) 28%, transparent);
    outline-offset: 2px;
}

@media (max-width: 768px) {
    html {
        font-size: 15px; /* Slightly smaller base for mobile */
    }

    header {
        padding-left: 1rem !important;
        padding-right: 1rem !important;
    }

    #headerActions {
        transition: all 0.3s var(--md-ease);
    }

    .premium-glass {
        border-radius: 24px !important;
        padding: 1.25rem !important;
    }

    .frame-row {
        grid-template-columns: 1fr;
        padding: 1rem;
        gap: 0.5rem;
    }

    .frame-row input {
        text-align: left;
        padding-left: 0.5rem;
    }

    .detail-info {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    /* Show actions by default on mobile since hover isn't possible */
    .group .group-hover\:translate-y-0 {
        transform: translateY(0) !important;
    }
    
    .group .group-hover\:opacity-100 {
        opacity: 1 !important;
    }

    .staggered-item {
        margin-bottom: 0.5rem;
    }

    /* Improve spacing for filter shells on mobile */
    .album-filter-shell {
        margin-bottom: 0.25rem;
    }
}