/* ============================================
   WTF - Design System
   ============================================ */

:root {
    /* Base palette - warm, inviting */
    --bg-cream: #FBF9F6;
    --bg-card: #FFFFFF;
    --text-primary: #2D2A26;
    --text-secondary: #6B6560;
    --text-muted: #9C958E;
    --border-light: #EBE7E2;

    /* Category Colors - four distinct hues */
    --watch-primary: #EC4899;
    --watch-bg: #FDF2F8;
    --watch-border: #FBCFE8;

    --eat-primary: #EA580C;
    --eat-bg: #FFF7ED;
    --eat-border: #FDBA74;

    --read-primary: #3B82F6;
    --read-bg: #EFF6FF;
    --read-border: #BFDBFE;

    --do-primary: #10B981;
    --do-bg: #ECFDF5;
    --do-border: #A7F3D0;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(45, 42, 38, 0.04), 0 1px 2px rgba(45, 42, 38, 0.06);
    --shadow-md: 0 4px 12px rgba(45, 42, 38, 0.06), 0 2px 4px rgba(45, 42, 38, 0.04);
    --shadow-lg: 0 12px 32px rgba(45, 42, 38, 0.08), 0 4px 8px rgba(45, 42, 38, 0.04);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Consistent border radius */
    --radius: 10px;
}

/* ============================================
   Base Styles
   ============================================ */

body {
    font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
    background: var(--bg-cream);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */

.display-font {
    font-family: 'Fraunces', Georgia, serif;
    font-optical-sizing: auto;
}

h1, h2, h3 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 600;
    line-height: 1.2;
}

.text-muted {
    color: var(--text-muted) !important;
}

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

.container {
    max-width: 640px;
    margin: 0 auto;
    padding: var(--space-lg);
}

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.nav-brand {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.01em;
    line-height: 1em;
}

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

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

.nav-links {
    display: flex;
    gap: var(--space-xs);
}

.nav-link {
    min-width: 56px;
    text-align: center;
    padding: var(--space-sm) var(--space-sm);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: all 0.2s ease;
    text-transform: uppercase;
}

.nav-link:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--text-primary);
    color: var(--bg-cream);
}

/* Category-specific nav styling */
.nav-link[data-category="watch"]:hover,
.nav-link[data-category="watch"].active {
    background: var(--watch-primary);
    color: white;
}

.nav-link[data-category="eat"]:hover,
.nav-link[data-category="eat"].active {
    background: var(--eat-primary);
    color: white;
}

.nav-link[data-category="read"]:hover,
.nav-link[data-category="read"].active {
    background: var(--read-primary);
    color: white;
}

.nav-link[data-category="do"]:hover,
.nav-link[data-category="do"].active {
    background: var(--do-primary);
    color: white;
}

/* ============================================
   Home Page Styles
   ============================================ */

.home-hero {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.home-title {
    font-size: clamp(2rem, 8vw, 3.5rem);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

/* Hero Word Cycler */
.hero-word-cycler {
    display: inline-block;
    position: relative;
    height: 1.2em;
    overflow: hidden;
    vertical-align: bottom;
    transition: width 0.3s ease;
}

.hero-word {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    transform: translateY(100%);
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.hero-word.active {
    opacity: 1;
    transform: translateY(0);
}

.hero-word.exiting {
    opacity: 0;
    transform: translateY(-100%);
}

/* Category colors for hero words */
.hero-word[data-category="watch"] { color: var(--watch-primary); }
.hero-word[data-category="eat"] { color: var(--eat-primary); }
.hero-word[data-category="read"] { color: var(--read-primary); }
.hero-word[data-category="do"] { color: var(--do-primary); }

.home-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--space-2xl);
}

/* ============================================
   Quick Add Card
   ============================================ */

.quick-add-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.quick-add-input-wrapper {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.quick-add-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-cream);
    transition: all 0.2s ease;
}

.quick-add-input:focus {
    outline: none;
    border-color: var(--text-muted);
    background: var(--bg-card);
}

.quick-add-input::placeholder {
    color: var(--text-muted);
}

/* ============================================
   Category Pills
   ============================================ */

.category-pills {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

.category-pill {
    flex: 1;
    max-width: 90px;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
    font-size: 0.7rem;
    font-weight: 600;
    font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s ease;
    background: transparent;
    text-transform: uppercase;
}

.category-pill[data-category="watch"] {
    color: var(--watch-primary);
    border-color: var(--watch-border);
    background: var(--watch-bg);
}

.category-pill[data-category="watch"]:hover,
.category-pill[data-category="watch"].selected {
    background: var(--watch-primary);
    border-color: var(--watch-primary);
    color: white;
}

.category-pill[data-category="eat"] {
    color: var(--eat-primary);
    border-color: var(--eat-border);
    background: var(--eat-bg);
}

.category-pill[data-category="eat"]:hover,
.category-pill[data-category="eat"].selected {
    background: var(--eat-primary);
    border-color: var(--eat-primary);
    color: white;
}

.category-pill[data-category="read"] {
    color: var(--read-primary);
    border-color: var(--read-border);
    background: var(--read-bg);
}

.category-pill[data-category="read"]:hover,
.category-pill[data-category="read"].selected {
    background: var(--read-primary);
    border-color: var(--read-primary);
    color: white;
}

.category-pill[data-category="do"] {
    color: var(--do-primary);
    border-color: var(--do-border);
    background: var(--do-bg);
}

.category-pill[data-category="do"]:hover,
.category-pill[data-category="do"].selected {
    background: var(--do-primary);
    border-color: var(--do-primary);
    color: white;
}

/* ============================================
   Recent/Up Next Section
   ============================================ */

.recent-section {
    margin-top: var(--space-2xl);
}

.recent-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.recent-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.recent-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.recent-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.recent-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    color: inherit;
}

.recent-card-empty {
    cursor: default;
}

.recent-card-empty:hover {
    box-shadow: var(--shadow-sm);
    transform: none;
}

/* Colored top accent bar */
.recent-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.recent-card[data-category="watch"]::before { background: var(--watch-primary); }
.recent-card[data-category="eat"]::before { background: var(--eat-primary); }
.recent-card[data-category="read"]::before { background: var(--read-primary); }
.recent-card[data-category="do"]::before { background: var(--do-primary); }

.recent-card-category {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-xs);
}

.recent-card[data-category="watch"] .recent-card-category { color: var(--watch-primary); }
.recent-card[data-category="eat"] .recent-card-category { color: var(--eat-primary); }
.recent-card[data-category="read"] .recent-card-category { color: var(--read-primary); }
.recent-card[data-category="do"] .recent-card-category { color: var(--do-primary); }

.recent-card-title {
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* ============================================
   Page Overlay (Server-side SPA pattern)
   ============================================ */

.page-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(251, 249, 246, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

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

.page-overlay .spinner-border {
    width: 2rem;
    height: 2rem;
    color: var(--text-primary);
}

/* Hide all loaders by default */
.loader-icon,
.loader-dots,
.loader-logo {
    display: none;
}

/* Show loader based on data-loader attribute */
.page-overlay[data-loader="icon"] .loader-icon,
.page-overlay[data-loader="dots"] .loader-dots,
.page-overlay[data-loader="logo"] .loader-logo {
    display: flex;
}

/* Hide Bootstrap spinner when using custom loaders */
.page-overlay[data-loader] .spinner-border {
    display: none;
}

/* Option A: Sparkle Icon */
.loader-icon {
    align-items: center;
    justify-content: center;
}

.loader-icon .sparkle {
    color: var(--text-primary);
    animation: sparkle-pulse 1.5s ease-in-out infinite;
}

@keyframes sparkle-pulse {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.15) rotate(15deg);
        opacity: 1;
    }
}

/* Option B: Morphing Dots */
.loader-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.loader-dots span {
    width: 10px;
    height: 10px;
    background: var(--text-primary);
    border-radius: 50%;
    animation: dots-bounce 1.4s ease-in-out infinite;
}

.loader-dots span:nth-child(1) {
    animation-delay: 0s;
}

.loader-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loader-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dots-bounce {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.4;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Option C: Logo Pulse */
.loader-logo {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    animation: logo-breathe 2s ease-in-out infinite;
}

@keyframes logo-breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.08);
        opacity: 1;
    }
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 575.98px) {
    .container {
        padding: var(--space-md);
    }

    .recent-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-link {
        min-width: 48px;
        padding: var(--space-sm) var(--space-xs);
        font-size: 0.8rem;
    }

    .category-pill {
        max-width: none;
        padding: var(--space-sm) var(--space-sm);
        font-size: 0.8rem;
    }
}

/* ============================================
   Reduced Motion Support
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    .loader-icon .sparkle,
    .loader-dots span,
    .loader-logo {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .hero-word {
        transition: opacity 0.3s ease;
        transform: none !important;
    }
}

/* ============================================
   Backlog Page Styles
   ============================================ */

.backlog-header {
    margin-bottom: var(--space-xl);
}

.backlog-title {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.backlog-title.watch { color: var(--watch-primary); }
.backlog-title.eat { color: var(--eat-primary); }
.backlog-title.read { color: var(--read-primary); }
.backlog-title.do { color: var(--do-primary); }

.backlog-count {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Add Item Wrapper */
.add-item-wrapper {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.2s ease;
}

.add-item-wrapper:focus-within {
    box-shadow: var(--shadow-md);
}

.add-item-wrapper.watch:focus-within { border-color: var(--watch-border); }
.add-item-wrapper.eat:focus-within { border-color: var(--eat-border); }
.add-item-wrapper.read:focus-within { border-color: var(--read-border); }
.add-item-wrapper.do:focus-within { border-color: var(--do-border); }

.add-item-main {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
}

.add-item-input {
    flex: 1;
    border: none;
    font-size: 1rem;
    font-family: inherit;
    background: transparent;
}

.add-item-input:focus {
    outline: none;
}

.add-item-input::placeholder {
    color: var(--text-muted);
}

.add-item-btn {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    color: white;
}

.add-item-btn.watch { background: var(--watch-primary); }
.add-item-btn.eat { background: var(--eat-primary); }
.add-item-btn.read { background: var(--read-primary); }
.add-item-btn.do { background: var(--do-primary); }

.add-item-btn:hover {
    filter: brightness(1.1);
}

.add-item-extras {
    display: none;
    padding: var(--space-sm) var(--space-lg) var(--space-md);
    border-top: 1px solid var(--border-light);
    gap: var(--space-md);
}

.add-item-wrapper:focus-within .add-item-extras {
    display: flex;
}

.add-item-extra-input {
    flex: 1;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--bg-cream);
}

.add-item-extra-input:focus {
    outline: none;
    border-color: var(--text-muted);
}

.add-item-extra-input::placeholder {
    color: var(--text-muted);
}

/* Backlog Items List */
.backlog-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.backlog-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: var(--space-md) var(--space-lg);
    padding-left: calc(var(--space-lg) + 20px);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    cursor: grab;
    transition: all 0.2s ease;
    border: 1px solid var(--border-light);
    position: relative;
}

.backlog-item:hover {
    box-shadow: var(--shadow-md);
}

/* Category indicator dot */
.backlog-item::before {
    content: '';
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.backlog-item.watch::before { background: var(--watch-primary); }
.backlog-item.eat::before { background: var(--eat-primary); }
.backlog-item.read::before { background: var(--read-primary); }
.backlog-item.do::before { background: var(--do-primary); }

.backlog-item.dragging {
    opacity: 0.5;
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.drag-handle {
    color: var(--text-muted);
    padding: var(--space-xs);
    opacity: 0.4;
    transition: opacity 0.15s ease;
    font-size: 1.1rem;
    line-height: 1;
    user-select: none;
}

.backlog-item:hover .drag-handle {
    opacity: 0.8;
}

.item-content {
    flex: 1;
    min-width: 0;
}

.item-title {
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.item-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.item-urls {
    margin-top: var(--space-xs);
}

.item-url {
    display: inline-block;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-decoration: none;
    margin-right: var(--space-sm);
    word-break: break-all;
}

.item-url:hover {
    color: #2563EB;
    text-decoration: underline;
}

.item-meta {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.item-tag {
    font-size: 0.75rem;
    padding: 2px var(--space-sm);
    border-radius: var(--radius);
    background: var(--border-light);
    color: var(--text-muted);
    text-decoration: none;
}

.item-tag.has-photo {
    background: #F3E8FF;
    color: #7C3AED;
}

.item-actions {
    opacity: 0;
    transition: opacity 0.15s ease;
}

.backlog-item:hover .item-actions {
    opacity: 1;
}

.item-action-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius);
    transition: all 0.15s ease;
    font-size: 1rem;
}

.item-action-btn:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

/* Up Next Highlight */
.backlog-item.up-next.watch {
    background: var(--watch-bg);
    border-color: var(--watch-border);
}

.backlog-item.up-next.eat {
    background: var(--eat-bg);
    border-color: var(--eat-border);
}

.backlog-item.up-next.read {
    background: var(--read-bg);
    border-color: var(--read-border);
}

.backlog-item.up-next.do {
    background: var(--do-bg);
    border-color: var(--do-border);
}

.backlog-item.up-next::before {
    width: 10px;
    height: 10px;
}

.backlog-item.up-next.watch::before {
    box-shadow: 0 0 0 3px var(--watch-bg);
}

.backlog-item.up-next.eat::before {
    box-shadow: 0 0 0 3px var(--eat-bg);
}

.backlog-item.up-next.read::before {
    box-shadow: 0 0 0 3px var(--read-bg);
}

.backlog-item.up-next.do::before {
    box-shadow: 0 0 0 3px var(--do-bg);
}

.up-next-badge {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px var(--space-sm);
    border-radius: var(--radius);
    margin-bottom: var(--space-xs);
    display: inline-block;
    color: white;
}

.up-next-badge.watch { background: var(--watch-primary); }
.up-next-badge.eat { background: var(--eat-primary); }
.up-next-badge.read { background: var(--read-primary); }
.up-next-badge.do { background: var(--do-primary); }

/* Empty state */
.backlog-empty {
    text-align: center;
    padding: var(--space-2xl);
}

/* Backlog item animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.backlog-item {
    animation: fadeInUp 0.3s ease forwards;
}

.backlog-item:nth-child(1) { animation-delay: 0s; }
.backlog-item:nth-child(2) { animation-delay: 0.05s; }
.backlog-item:nth-child(3) { animation-delay: 0.1s; }
.backlog-item:nth-child(4) { animation-delay: 0.15s; }
.backlog-item:nth-child(5) { animation-delay: 0.2s; }

/* Responsive adjustments for backlog */
@media (max-width: 575.98px) {
    .add-item-extras {
        flex-direction: column;
    }

    .backlog-item {
        padding: var(--space-sm) var(--space-md);
        padding-left: calc(var(--space-md) + 16px);
    }

    .backlog-item::before {
        left: var(--space-md);
        width: 6px;
        height: 6px;
    }

    .backlog-item.up-next::before {
        width: 8px;
        height: 8px;
    }

    .item-actions {
        opacity: 1;
    }
}