/* ============================================================
   DigiBack — Main CSS
   Dark cosmic aesthetic, mobile-first
   Fonts: Cormorant Garamond (display) + DM Sans (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=DM+Sans:wght@300;400;500&display=swap');

/* ============================================================
   TOKENS
   ============================================================ */
:root {
    --bg-deep:       #07070e;
    --bg-base:       #0e0e1a;
    --bg-surface:    #15151f;
    --bg-raised:     #1c1c2a;
    --bg-hover:      #232335;

    --gold:          #c9a84c;
    --gold-dim:      #8a6f2e;
    --gold-glow:     rgba(201,168,76,0.15);

    --text-primary:  #f0ede8;
    --text-secondary:#a09a8e;
    --text-muted:    #5a5650;

    --border:        rgba(201,168,76,0.12);
    --border-bright: rgba(201,168,76,0.3);

    --online:        #4caf82;
    --offline:       #e05a4e;
    --wifi:          #5a9ed4;

    --radius-sm:     6px;
    --radius-md:     12px;
    --radius-lg:     20px;
    --radius-xl:     28px;

    --shadow-card:   0 4px 32px rgba(0,0,0,0.6);
    --shadow-gold:   0 0 24px rgba(201,168,76,0.2);

    --font-display:  'Cormorant Garamond', Georgia, serif;
    --font-body:     'DM Sans', system-ui, sans-serif;

    --transition:    0.2s ease;
    --transition-slow: 0.4s ease;

    --safe-bottom:   env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: 0.8; }

img, video { display: block; max-width: 100%; }

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--font-body);
    color: inherit;
}

input, textarea, select {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-primary);
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 2px; }

/* ============================================================
   NETWORK STATUS INDICATOR
   ============================================================ */
#network-status {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: transform 0.35s ease, background var(--transition);
    pointer-events: none;
}

#network-status.visible {
    transform: translateX(-50%) translateY(0);
}

#network-status.online  { background: var(--online);  color: #fff; }
#network-status.offline { background: var(--offline);  color: #fff; }
#network-status.wifi    { background: var(--wifi);     color: #fff; }

#network-status .status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.8;
}

/* ============================================================
   SITE HEADER
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 56px;
    background: rgba(7,7,14,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.site-logo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--gold);
}

.site-logo span {
    color: var(--text-primary);
    font-weight: 300;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ============================================================
   NETWORK PILL (header)
   ============================================================ */
.net-pill {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: background var(--transition), color var(--transition);
}

.net-pill .dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: currentColor;
}

.net-pill.online  { background: rgba(76,175,130,0.15); color: var(--online); }
.net-pill.offline { background: rgba(224,90,78,0.15);  color: var(--offline); }
.net-pill.wifi    { background: rgba(90,158,212,0.15); color: var(--wifi); }

/* ============================================================
   PAGE WRAPPER
   ============================================================ */
.page-wrap {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 16px 80px;
}

@media (min-width: 768px) {
    .page-wrap { max-width: 900px; }
}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.section-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* ============================================================
   BOOK CARD
   ============================================================ */
.book-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 600px) {
    .book-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
    .book-grid { grid-template-columns: repeat(3, 1fr); }
}

.book-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
    cursor: pointer;
}

.book-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card), var(--shadow-gold);
    border-color: var(--border-bright);
}

.book-card__cover {
    position: relative;
    aspect-ratio: 3/4;
    background: var(--bg-raised);
    overflow: hidden;
}

.book-card__cover img,
.book-card__cover video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-card__cover .play-trailer {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(201,168,76,0.9);
    color: var(--bg-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity var(--transition);
}

.book-card:hover .play-trailer { opacity: 1; }

.book-card__info {
    padding: 16px;
}

.book-card__title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: 4px;
}

.book-card__author {
    font-size: 0.8rem;
    color: var(--gold);
    margin-bottom: 10px;
    letter-spacing: 0.03em;
}

.book-card__meta {
    display: flex;
    gap: 12px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.book-card__meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.book-card__modes {
    display: flex;
    gap: 6px;
    margin-top: 10px;
}

.mode-badge {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 20px;
    background: var(--bg-raised);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.mode-badge.active {
    background: var(--gold-glow);
    color: var(--gold);
    border-color: var(--gold-dim);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: background var(--transition), transform var(--transition), opacity var(--transition);
    cursor: pointer;
    border: none;
}

.btn:active { transform: scale(0.97); }

.btn-gold {
    background: var(--gold);
    color: var(--bg-deep);
}
.btn-gold:hover { background: #d4b05a; color: var(--bg-deep); }

.btn-outline {
    background: transparent;
    color: var(--gold);
    border: 1px solid var(--border-bright);
}
.btn-outline:hover { background: var(--gold-glow); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover { color: var(--text-primary); }

.btn-sm { padding: 8px 16px; font-size: 0.8rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }

/* ============================================================
   FORMS (shared)
   ============================================================ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color var(--transition);
    outline: none;
    appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--gold-dim);
    box-shadow: 0 0 0 3px var(--gold-glow);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

.form-select option {
    background: var(--bg-raised);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ============================================================
   TOGGLE SWITCH
   ============================================================ */
.toggle-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.toggle-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.toggle {
    position: relative;
    width: 44px; height: 24px;
    flex-shrink: 0;
}

.toggle input { display: none; }

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-hover);
    border-radius: 12px;
    cursor: pointer;
    transition: background var(--transition);
    border: 1px solid var(--border);
}

.toggle-slider::after {
    content: '';
    position: absolute;
    left: 3px; top: 3px;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: transform var(--transition), background var(--transition);
}

.toggle input:checked + .toggle-slider {
    background: var(--gold-glow);
    border-color: var(--gold-dim);
}
.toggle input:checked + .toggle-slider::after {
    transform: translateX(20px);
    background: var(--gold);
}

/* ============================================================
   FILE UPLOAD ZONE
   ============================================================ */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
    background: var(--bg-raised);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--gold-dim);
    background: var(--gold-glow);
}

.upload-zone__icon {
    font-size: 1.8rem;
    margin-bottom: 8px;
    opacity: 0.5;
}

.upload-zone__text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.upload-zone__hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.upload-zone input[type="file"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.upload-preview {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-top: 8px;
    font-size: 0.85rem;
}

.upload-preview__name { flex: 1; color: var(--text-secondary); }
.upload-preview__size { color: var(--text-muted); font-size: 0.75rem; }
.upload-preview__remove {
    color: var(--text-muted);
    padding: 2px;
    transition: color var(--transition);
}
.upload-preview__remove:hover { color: var(--offline); }

/* ============================================================
   ALERTS / TOAST
   ============================================================ */
.toast-container {
    position: fixed;
    bottom: calc(20px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    width: min(calc(100% - 32px), 400px);
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-raised);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    font-size: 0.875rem;
    animation: toast-in 0.3s ease forwards;
    pointer-events: all;
}

.toast.success { border-color: rgba(76,175,130,0.4); color: var(--online); }
.toast.error   { border-color: rgba(224,90,78,0.4);  color: var(--offline); }
.toast.info    { border-color: var(--border-bright); color: var(--gold); }

@keyframes toast-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.spinner {
    width: 32px; height: 32px;
    border: 2px solid var(--border);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}

.empty-state__icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state__title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.text-gold    { color: var(--gold); }
.text-muted   { color: var(--text-muted); }
.text-center  { text-align: center; }

.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

/* ============================================================
   DEBUG BANNER
   ============================================================ */
.debug-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    background: rgba(224,90,78,0.5);
    color: #fff;
    text-align: center;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    pointer-events: all;
}

.debug-banner a {
    color: #fff;
    text-decoration: underline;
    opacity: 0.85;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    pointer-events: all;
}

.debug-banner a:hover { opacity: 1; }