/* ============================================================
   DESIGN TOKENS — Apple-inspired dark system (no blue)
   ============================================================ */
:root {
    /* Background layers */
    --bg:           #09090b;
    --bg-elevated:  #111113;
    --bg-surface:   #18181b;
    --bg-hover:     #1f1f23;

    /* Primary — warm orange */
    --primary:        #f97316;
    --primary-dark:   #ea580c;
    --primary-glow:   rgba(249, 115, 22, 0.15);

    /* Secondary — soft amber */
    --secondary:      #fbbf24;
    --secondary-dark: #f59e0b;

    /* Tertiary — warm rose */
    --tertiary:       #fb7185;
    --tertiary-dark:  #e11d48;

    /* Text */
    --text:           #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted:     #52525b;

    /* Borders */
    --border:         rgba(255, 255, 255, 0.06);
    --border-hover:   rgba(255, 255, 255, 0.12);

    /* Radius */
    --r-sm:  8px;
    --r-md:  12px;
    --r-lg:  16px;
    --r-xl:  22px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.5);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.6);
    --shadow-glow: 0 0 20px var(--primary-glow);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    overflow-x: hidden;
    color-scheme: dark;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    padding-bottom: 90px;
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ============================================================
   TAP HIGHLIGHT — universal
   ============================================================ */
* {
    -webkit-tap-highlight-color: transparent;
}

button:active,
a:active,
select:active,
.manga-card:active,
.chapter-item:active {
    background-color: rgba(251, 146, 60, 0.1) !important;
    transition: background-color 0.05s ease;
}

button:not(:active),
a:not(:active),
select:not(:active),
.manga-card:not(:active),
.chapter-item:not(:active) {
    transition: background-color 0.4s ease;
}

.manga-card,
.chapter-item,
.icon-btn,
.back-btn,
.search-icon-btn,
.search-clear-btn,
.brand,
.lang-selector,
.mode-toggle {
    position: relative;
    overflow: hidden;
}

.manga-card::after,
.chapter-item::after,
.icon-btn::after,
.back-btn::after,
.search-icon-btn::after,
.brand::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(251, 146, 60, 0.12);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    border-radius: inherit;
}

.manga-card:active::after,
.chapter-item:active::after,
.icon-btn:active::after,
.back-btn:active::after,
.search-icon-btn:active::after,
.brand:active::after {
    opacity: 1;
    transition: opacity 0.05s ease;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
    background: rgba(9, 9, 11, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header.hidden { display: none; }

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Brand */
.brand {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
    flex-shrink: 0;
}

.brand-icon {
    font-size: 22px;
    color: var(--primary);
}

.brand-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.02em;
}

/* Search */
.search-box {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 560px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 0 0.35rem 0 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus-within {
    border-color: var(--primary-dark);
    box-shadow: var(--shadow-glow);
}

.search-icon-btn,
.search-clear-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--r-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: color 0.15s, background 0.15s;
}

.search-icon-btn:hover,
.search-clear-btn:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.search-icon-btn .material-icons-round,
.search-clear-btn .material-icons-round {
    font-size: 20px;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text);
    padding: 0.65rem 0.35rem;
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    min-width: 0;
}

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

/* Language selector */
.lang-selector {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.6rem 0.75rem;
    font-size: 0.85rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    border-radius: var(--r-md);
    transition: border-color 0.2s;
    flex-shrink: 0;
    color-scheme: dark;
}

.lang-selector:hover,
.lang-selector:focus {
    border-color: var(--border-hover);
    color: var(--text);
}

.lang-selector option {
    background-color: var(--bg-surface);
    color: var(--text);
}

/* ============================================================
   SECTION TITLES
   ============================================================ */
.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 2rem 0 1rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
    margin-left: 0.5rem;
}

/* ============================================================
   MANGA GRID & CARDS
   ============================================================ */
.manga-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.manga-card {
    cursor: pointer;
    transition: opacity 0.2s ease;
    border-radius: var(--r-lg);
    overflow: hidden;
}

.manga-card:hover {
    opacity: 0.85;
}

.manga-cover-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 2/3;
    background: var(--bg-surface);
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.manga-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity 0.3s;
}

.manga-cover.loading {
    opacity: 0;
}

/* Skeleton placeholder — shimmer then SVG fallback */
.cover-placeholder {
    position: absolute;
    inset: 0;
    background: linear-gradient(
            110deg,
            var(--bg-surface) 30%,
            var(--bg-hover) 50%,
            var(--bg-surface) 70%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.6s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cover-placeholder.hidden { display: none; }

/* After 3s delay, show inline SVG manga placeholder */
.cover-placeholder .placeholder-svg {
    opacity: 0;
    transition: opacity 0.4s ease;
}

.cover-placeholder.show-icon .placeholder-svg {
    opacity: 1;
}

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

.manga-title {
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.5rem;
    line-height: 1.35;
    color: var(--text-secondary);
    padding: 0 0.15rem;
}

/* ============================================================
   CHAPTERS VIEW
   ============================================================ */
.chapters-view {
    max-width: 860px;
    margin: 2rem auto;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.55rem 1rem 0.55rem 0.75rem;
    margin-bottom: 1.75rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-family: inherit;
    font-weight: 500;
    border-radius: var(--r-md);
    transition: all 0.2s;
}

#backToChaptersBtn {
    background-color: var(--bg-surface);
    color: var(--text-secondary);
}

.back-btn .material-icons-round {
    font-size: 18px;
    color: var(--primary);
}

.back-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    color: var(--text);
}

.chapter-list {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    overflow: hidden;
}

.chapter-item {
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary);
    transition: background 0.15s, color 0.15s, padding-left 0.15s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chapter-item::before {
    content: '';
    width: 2px;
    height: 14px;
    background: var(--primary);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.15s;
    flex-shrink: 0;
}

.chapter-item:hover {
    background: var(--bg-hover);
    color: var(--text);
    padding-left: 1.5rem;
}

.chapter-item.active {
    background: var(--primary-glow);
    color: var(--text);
    /*border-left: 2px solid var(--primary);*/
    padding-left: 1.5rem;
}
.chapter-item.active::before { opacity: 1; }

.chapter-item:last-child {
    border-bottom: none;
}

/* ============================================================
   READER VIEW
   ============================================================ */
.reader-view {
    max-width: 1000px;
    margin: 0 auto;
}

/* Page mode — fills viewport */
.reader-view.page-mode {
    max-width: 100%;
    height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    background: #000;
    perspective: 1200px;
    position: fixed;
    inset: 0;
    z-index: 150;
    touch-action: pinch-zoom;
}

.reader-view.page-mode .page-flip-container {
    width: auto;
    height: calc(100dvh - 72px);
    max-width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    transform-style: preserve-3d;
}

.reader-view.page-mode .reader-page {
    width: auto;
    height: 100%;
    max-width: 100vw;
    object-fit: contain;
    margin: 0;
    display: block;
    backface-visibility: hidden;
}

/* Page-flip 3D animations */
.page-flip-container {
    animation: page-enter 0.45s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.page-flip-container.flip-next {
    animation: page-flip-out-next 0.35s cubic-bezier(0.55, 0, 0.68, 0.53) both;
}

.page-flip-container.flip-prev {
    animation: page-flip-out-prev 0.35s cubic-bezier(0.55, 0, 0.68, 0.53) both;
}

.page-flip-container.flip-enter-next {
    animation: page-flip-in-next 0.4s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.page-flip-container.flip-enter-prev {
    animation: page-flip-in-prev 0.4s cubic-bezier(0.23, 1, 0.32, 1) both;
}

@keyframes page-enter {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes page-flip-out-next {
    from {
        opacity: 1;
        transform: rotateY(0deg) translateX(0);
    }
    to {
        opacity: 0;
        transform: rotateY(-35deg) translateX(-8%);
    }
}

@keyframes page-flip-out-prev {
    from {
        opacity: 1;
        transform: rotateY(0deg) translateX(0);
    }
    to {
        opacity: 0;
        transform: rotateY(35deg) translateX(8%);
    }
}

@keyframes page-flip-in-next {
    from {
        opacity: 0;
        transform: rotateY(25deg) translateX(6%);
    }
    to {
        opacity: 1;
        transform: rotateY(0deg) translateX(0);
    }
}

@keyframes page-flip-in-prev {
    from {
        opacity: 0;
        transform: rotateY(-25deg) translateX(-6%);
    }
    to {
        opacity: 1;
        transform: rotateY(0deg) translateX(0);
    }
}

/* Scroll mode */
.reader-page {
    width: 100%;
    display: block;
    background: #000;
    margin-bottom: 2px;
}

/* Page image error state */
.page-error {
    width: 100%;
    aspect-ratio: 2/3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.page-error .material-icons-round {
    font-size: 40px;
    color: var(--text-muted);
}

/* ============================================================
   READER CONTROLS
   ============================================================ */
.controls {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(9,9,11,0.75) 0%, transparent 100%);
    border-top: none;
    border-top: 1px solid var(--border);
    padding: 0.5rem 1rem;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom, 0px));
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 200;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.controls.controls--hidden {
    transform: translateY(100%);
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
}

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

.controls-right > button {
    background: var(--bg-surface);
}

.controls-center {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

/* Icon buttons */
.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 44px;
    height: 44px;
    border-radius: var(--r-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s, transform 0.1s;
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
}

.icon-btn:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.icon-btn:active {
    transform: scale(0.9);
}

.icon-btn:disabled {
    opacity: 0.2;
    cursor: not-allowed;
}

.icon-btn:disabled:active {
    transform: none;
}

.icon-btn .material-icons-round {
    font-size: 24px;
    line-height: 1;
}

/* Mode toggle — primary tint */
.mode-toggle {
    color: var(--primary);
}

.mode-toggle:hover {
    background: var(--primary-glow);
    color: var(--primary);
}

/* Page info */
.page-info {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    min-width: 56px;
    text-align: center;
    letter-spacing: 0.03em;
}

/* ============================================================
   SPINNER
   ============================================================ */
.spinner-wrap {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 0;
}

.spinner {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 3px solid var(--bg-hover);
    border-top-color: var(--primary);
    animation: spin 0.75s cubic-bezier(0.6, 0.2, 0.4, 0.8) infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Inline loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.hidden {
    display: none !important;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .header-content {
        gap: 0.75rem;
    }

    .brand-name {
        display: none;
    }

    .search-box {
        max-width: none;
        min-width: 0;
    }

    .lang-selector {
        padding: 0.5rem;
        font-size: 0.8rem;
    }

    .manga-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 0.9rem;
    }

    .section-title {
        font-size: 1rem;
    }

    .icon-btn .material-icons-round {
        font-size: 26px;
    }
}

/* ============================================================
   TOAST
   ============================================================ */
.toast-container {
    position: fixed;
    bottom: calc(90px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
    pointer-events: none;
    width: 100%;
    padding: 0 1rem;
}

.toast {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    max-width: 420px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-hover);
    border-left: 3px solid var(--tertiary);
    color: var(--text);
    padding: 0.75rem 1rem;
    border-radius: var(--r-md);
    box-shadow: var(--shadow-md);
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast .material-icons-round {
    font-size: 20px;
    color: var(--tertiary);
    flex-shrink: 0;
}