/**
 * Mijn Bijbel - Layout Styles
 * Grid, Flexbox, Main Structure
 */

/* ==========================================================================
   App Layout
   ========================================================================== */

body {
    display: flex;
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport height for mobile */
}

/* ==========================================================================
   Sidebar
   ========================================================================== */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: var(--z-fixed);
    transition: width var(--transition-normal), transform var(--transition-normal);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .nav-label,
.sidebar.collapsed .btn-label,
.sidebar.collapsed .sidebar-logo {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed .nav-arrow {
    display: none;
}

/* Sidebar Header */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-color);
    min-height: var(--header-height);
}

.sidebar-logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    white-space: nowrap;
    transition: opacity var(--transition-normal);
}

.brand-text {
    color: var(--brand-color);
}

.sidebar-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.sidebar-toggle:hover {
    background-color: var(--bg-tertiary);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-2);
}

.nav-item {
    position: relative;
    margin-bottom: var(--space-1);
}

.nav-button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    text-align: left;
}

.nav-button:hover {
    background-color: var(--bg-tertiary);
}

.nav-label {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: opacity var(--transition-normal);
}

.nav-arrow {
    color: var(--text-muted);
    font-size: 18px;
    transition: transform var(--transition-fast);
}

.nav-item.open .nav-arrow {
    transform: rotate(180deg);
}

/* Nav Dropdown */
.nav-dropdown {
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 280px;
    max-height: 70vh;
    overflow-y: auto;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.nav-item.open .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(var(--space-2));
}

.nav-dropdown-large {
    min-width: 320px;
}

.dropdown-group {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background-color: var(--bg-tertiary);
}

.dropdown-item {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-size: var(--text-sm);
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--bg-tertiary);
}

.dropdown-item.active {
    background-color: var(--brand-light);
    color: var(--brand-color);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-2);
    border-top: 1px solid var(--border-color);
}

.sidebar-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.sidebar-btn:hover {
    background-color: var(--bg-tertiary);
}

.btn-label {
    font-size: var(--text-sm);
    transition: opacity var(--transition-normal);
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-normal);
    overflow-x: hidden;
    max-width: 100%;
    position: relative;
}

/* Logo on desktop - hidden by default, only on mobile */
.main-content::before {
    content: none;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

/* Mobile: full width */
@media (max-width: 1023px) {
    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100vw;
    }
}

/* ==========================================================================
   Tabs Grid (Desktop)
   ========================================================================== */

.tabs-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-4);
    overflow-y: auto;
    position: relative;
    z-index: 1;
}

/* Multiple columns for wider screens */
@media (min-width: 1200px) {
    .tabs-grid {
        grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    }
}

/* ==========================================================================
   Tab Row
   ========================================================================== */

.tab-row {
    display: flex;
    gap: var(--space-4);
}

.tab-row > * {
    flex: 1;
}

/* ==========================================================================
   Bible Tab
   ========================================================================== */

.bible-tab {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 400px;
}

/* Tab Header */
.tab-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.tab-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.tab-title-text {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
}

.tab-translation {
    font-size: var(--text-xs);
    color: var(--text-muted);
    background-color: var(--bg-primary);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.tab-controls {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.tab-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

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

.tab-btn .material-symbols-outlined {
    font-size: 20px;
}

/* Tab Content */
.tab-content {
    flex: 1;
    padding: var(--space-6);
    overflow-y: auto;
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
}

.tab-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tab-nav-btn:hover {
    background-color: var(--bg-primary);
    color: var(--brand-color);
}

.tab-nav-btn .material-symbols-outlined {
    font-size: 18px;
}

/* ==========================================================================
   Study Control Bar
   ========================================================================== */

.study-control-bar {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-sticky);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.study-control-bar.visible {
    transform: translateY(0);
    opacity: 1;
}

.study-title-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.study-title-input {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--text-primary);
}

.study-subtitle-input {
    font-size: var(--text-sm);
    border: none;
    background: transparent;
    color: var(--text-secondary);
}

.study-title-input::placeholder,
.study-subtitle-input::placeholder {
    color: var(--text-muted);
}

.study-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.study-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.study-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.study-btn-primary {
    background-color: var(--brand-color);
    color: white;
}

.study-btn-primary:hover {
    background-color: var(--brand-hover);
    color: white;
}

/* ==========================================================================
   Mobile Carousel
   ========================================================================== */

.mobile-carousel {
    display: none;
    flex: 1;
    position: relative;
    overflow: hidden;
    background-color: var(--bg-primary);
    width: 100%;
    max-width: 100vw;
    --logo-opacity: 0.15;
    --logo-y: 0px;
}

.mobile-carousel::before {
    content: '';
    position: fixed;
    top: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(var(--logo-y, 0px));
    width: 100px;
    height: 100px;
    background-image: url('/icon.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    opacity: var(--logo-opacity, 0.15);
    pointer-events: none;
    z-index: 0;
    filter: brightness(0) invert(1);
    transition: opacity 0.1s ease-out;
    will-change: opacity, transform;
}

/* Better visibility on light themes */
.theme-light .mobile-carousel::before,
.theme-warm .mobile-carousel::before {
    opacity: var(--logo-opacity, 0.4);
}

.theme-light .mobile-carousel,
.theme-warm .mobile-carousel {
    --logo-opacity: 0.4;
}

.carousel-track {
    display: flex;
    height: 100%;
    width: 100%;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.carousel-track::-webkit-scrollbar {
    display: none;
}

.carousel-slide {
    flex: 0 0 100%;
    width: 100%;
    min-width: 100%;
    max-width: 100vw;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    position: relative;
    z-index: 1;
}

.carousel-indicators {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + var(--space-3));
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px var(--space-3);
    height: 28px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    z-index: var(--z-sticky);
    max-width: calc(100vw - var(--space-8));
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.indicator-dots {
    display: flex;
    gap: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.indicator-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    max-width: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Action mode - transform dots into action bar */
.carousel-indicators.action-mode {
    padding: var(--space-2) var(--space-3);
    height: 44px;
}

.carousel-indicators.action-mode .indicator-dots {
    max-width: 0;
    opacity: 0;
    gap: 0;
    overflow: hidden;
}

.carousel-indicators.action-mode .indicator-actions {
    max-width: 300px;
    opacity: 1;
}

.carousel-indicators.action-mode .action-bar-count {
    padding: 0 var(--space-2);
    border-right: 1px solid var(--border-color);
    margin-right: var(--space-1);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

.carousel-indicators.action-mode .action-bar-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.carousel-indicators.action-mode .action-bar-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.carousel-indicators.action-mode .action-bar-btn:active {
    transform: scale(0.9);
}

.carousel-dot {
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background-color: var(--border-color);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.carousel-dot:hover {
    background-color: var(--text-muted);
}

.carousel-dot.active {
    width: 18px;
    background-color: var(--brand-color);
}

/* Hide indicators when only one tab, unless in action mode */
.carousel-indicators:empty:not(.action-mode),
.carousel-indicators:has(.carousel-dot:only-child):not(.action-mode) {
    display: none;
}

/* Show indicators when in action mode, even with single tab */
.carousel-indicators.action-mode {
    display: flex;
}

/* ==========================================================================
   Mobile Navigation
   ========================================================================== */

.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100vw;
    height: var(--bottom-nav-height);
    padding-bottom: var(--safe-area-bottom);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    z-index: var(--z-fixed);
    grid-template-columns: repeat(4, 1fr);
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2);
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.mobile-nav-item:active {
    transform: scale(0.95);
}

.mobile-nav-item.active {
    color: var(--brand-color);
}

.mobile-nav-item .material-symbols-outlined {
    font-size: 24px;
}

.mobile-nav-item .nav-label {
    font-size: var(--text-xs);
    font-family: var(--font-ui);
}

/* ==========================================================================
   Add Tab Button
   ========================================================================== */

.add-tab-btn {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--brand-color);
    color: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
    z-index: var(--z-sticky);
}

.add-tab-btn:hover {
    background-color: var(--brand-hover);
    transform: scale(1.05);
}

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

.add-tab-btn .material-symbols-outlined {
    font-size: 28px;
}

/* Hide on mobile (use bottom nav instead) */
@media (max-width: 1023px) {
    .add-tab-btn {
        display: none;
    }
}