@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@500;700&family=Mukta:wght@400;700&display=swap');

:root {
    /* Theme - Soft Tech */
    --bg-app: #F3F4F6;
    --bg-window: #FFFFFF;
    --bg-sidebar: #FAFAFA;

    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;

    --border-light: #E5E7EB;
    --accent: #2563EB;

    --hover: #F3F4F6;

    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);

    --font-ui: 'Inter', sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-nepali: 'Mukta', sans-serif;
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-ui);
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* App Structure */
.app-container {
    width: 100%;
    height: 100%;
    max-width: 1100px;
    max-height: 800px;
    /* Windowed mode on large screens */
    padding: 24px;
}

@media (max-width: 800px) {
    .app-container {
        padding: 0;
        max-height: none;
    }
}

.window-frame {
    display: flex;
    width: 100%;
    height: 100%;
    background: var(--bg-window);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid white;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    padding: 24px;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--text-primary);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.nav-item {
    text-align: left;
    background: none;
    border: none;
    padding: 10px 12px;
    border-radius: 6px;
    font-family: var(--font-ui);
    color: var(--text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

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

.nav-item.active {
    background: var(--text-primary);
    color: white;
}

.mini-footer {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* Main Content */
.content-area {
    flex: 1;
    position: relative;
    overflow: hidden;
    /* Hide scrollbars of inactive tabs */
}

.tab-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.tab-content.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    z-index: 10;
}

/* Scrollable Lists logic */
.sticky-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-light);
    z-index: 20;
}

.sticky-header h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.scroll-list {
    flex: 1;
    overflow-y: auto;
    padding: 24px 32px;
    scroll-behavior: smooth;
}

/* Home Tab */
.greeting-container {
    padding: 48px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
}

.greeting-container.compact {
    padding: 32px;
    gap: 16px;
}

.greeting-container.compact h1 {
    font-size: 2rem;
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}

.stats-inline {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-tertiary);
    font-family: var(--font-ui);
}

.home-search {
    width: 100%;
    margin: 0;
}

.home-search .dict-search-input {
    max-width: 100%;
}

/* Explore Section */
.explore-section {
    width: 100%;
    background: var(--hover);
    border-radius: 12px;
    padding: 20px;
}

.explore-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.shuffle-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s, transform 0.2s;
}

.shuffle-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: rotate(180deg);
}

/* Word Chips */
.word-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.word-chip {
    background: white;
    border: 1px solid var(--border-light);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.word-chip:hover {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.word-chip .nepali-text {
    font-weight: 500;
}

/* Disclaimer Toggle */
.disclaimer-toggle {
    width: 100%;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.disclaimer-toggle summary {
    cursor: pointer;
    padding: 8px 0;
    user-select: none;
}

.disclaimer-toggle summary:hover {
    color: var(--text-secondary);
}

.disclaimer-toggle .disclaimer {
    margin-top: 8px;
    font-size: 0.8rem;
    padding: 10px 12px;
}

.hand-wave {
    display: inline-block;
    animation: wave 2.5s infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {
    0% {
        transform: rotate(0.0deg)
    }

    10% {
        transform: rotate(14.0deg)
    }

    20% {
        transform: rotate(-8.0deg)
    }

    30% {
        transform: rotate(14.0deg)
    }

    40% {
        transform: rotate(-4.0deg)
    }

    50% {
        transform: rotate(10.0deg)
    }

    60% {
        transform: rotate(0.0deg)
    }

    100% {
        transform: rotate(0.0deg)
    }
}

.greeting-container h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 500px;
    line-height: 1.5;
}

.disclaimer {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    max-width: 500px;
    line-height: 1.6;
    padding: 12px 16px;
    background: #FEF3C7;
    border-left: 3px solid #F59E0B;
    border-radius: 4px;
}

.home-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

.disclaimer-inline {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    line-height: 1.5;
    max-width: 600px;
}

.disclaimer-inline p {
    margin: 0 0 4px 0;
}

.disclaimer-inline p:last-child {
    margin-bottom: 0;
}

.daily-word-card {
    background: var(--hover);
    padding: 32px;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    margin-top: 24px;
}

.daily-word-card .label {
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    display: block;
    margin-bottom: 12px;
}

.daily-word-card h2 {
    font-size: 2rem;
    font-family: var(--font-heading);
    margin-bottom: 8px;
}

.nepali-text {
    font-family: var(--font-nepali);
    font-weight: 400;
}

.quick-stats {
    display: flex;
    gap: 32px;
    margin-top: 48px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-val {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
}

.stat-lbl {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* Data Tables */
.data-row {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-light);
    display: grid;
    gap: 16px;
    font-size: 0.95rem;
}

.data-row:last-child {
    border-bottom: none;
}

.data-row.glossary-row {
    grid-template-columns: 180px 100px 1fr;
}

.data-row.music-row {
    grid-template-columns: 220px 140px 1fr;
}

.data-row.food-row {
    grid-template-columns: 220px 140px 1fr;
}

.cell-primary {
    font-weight: 600;
    color: var(--text-primary);
}

.cell-content {
    color: var(--text-secondary);
    line-height: 1.5;
}

.min-badge {
    padding: 2px 8px;
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.ext-link {
    display: inline-flex;
    margin-left: 6px;
    text-decoration: none;
    color: var(--accent);
    background: #EFF6FF;
    width: 20px;
    height: 20px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 12px;
}

.recipe-btn {
    margin-left: 8px;
    font-size: 0.75rem;
    padding: 2px 8px;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 4px;
}

.recipe-btn:hover {
    background: var(--accent);
    color: white;
}

/* Filter Buttons */
.filter-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border-light);
    padding: 6px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.filter-btn.active {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.filter-btn:hover:not(.active) {
    border-color: var(--text-secondary);
}

/* Dictionary Styles */
.dict-subtitle {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.search-container {
    margin-top: 8px;
}

.dict-search-input {
    width: 100%;
    max-width: 500px;
    padding: 12px 16px;
    font-size: 1rem;
    font-family: var(--font-nepali);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    background: white;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.dict-search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.dict-search-input::placeholder {
    color: var(--text-tertiary);
}

.dict-results {
    padding: 24px 32px;
}

.dict-placeholder {
    color: var(--text-secondary);
    padding: 24px 0;
}

.dict-placeholder p {
    margin: 0;
}

.random-words-header {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.dict-results-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.dict-no-results {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.dict-no-results .hint {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-top: 8px;
}

.dict-card {
    background: var(--bg-sidebar);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 16px;
    transition: box-shadow 0.2s, transform 0.2s;
}

.dict-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.dict-card-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.dict-word {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.dict-pos {
    font-size: 0.85rem;
    color: var(--accent);
    background: #EFF6FF;
    padding: 2px 10px;
    border-radius: 12px;
    font-weight: 500;
}

.dict-definitions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dict-definition {
    padding-left: 4px;
}

.def-number {
    color: var(--text-tertiary);
    font-weight: 600;
    margin-right: 8px;
}

.def-text {
    color: var(--text-primary);
    line-height: 1.6;
}

.dict-examples {
    margin-top: 8px;
    padding-left: 20px;
    border-left: 2px solid var(--border-light);
}

.dict-example {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
    line-height: 1.5;
    margin-bottom: 4px;
}

.dict-example:last-child {
    margin-bottom: 0;
}

/* Mobile - Tablet */
@media (max-width: 768px) {
    body {
        height: 100%;
        overflow: auto;
    }

    .app-container {
        padding: 0;
        max-height: none;
        height: auto;
        min-height: 100vh;
    }

    .window-frame {
        flex-direction: column;
        border-radius: 0;
        border: none;
        height: auto;
        min-height: 100vh;
    }

    .sidebar {
        width: 100%;
        height: auto;
        padding: 12px 16px;
        flex-direction: row;
        align-items: center;
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        position: sticky;
        top: 0;
        z-index: 100;
        background: var(--bg-sidebar);
    }

    .brand {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 1rem;
    }

    .nav-menu {
        flex-direction: row;
        gap: 4px;
        flex: 1;
        justify-content: flex-end;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-item {
        padding: 8px 12px;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .mini-footer {
        display: none;
    }

    .content-area {
        flex: 1;
        overflow: visible;
        position: relative;
    }

    .tab-content {
        position: relative;
        display: none;
        height: auto;
        min-height: calc(100vh - 60px);
    }

    .tab-content.active {
        display: flex;
    }

    /* Home Tab Mobile */
    .greeting-container {
        padding: 24px 16px;
        overflow-y: auto;
    }

    .greeting-container.compact {
        padding: 20px 16px;
    }

    .greeting-container.compact h1 {
        font-size: 1.5rem;
    }

    .stats-inline {
        font-size: 0.8rem;
        display: block;
        margin-top: 4px;
    }

    .home-subtitle {
        font-size: 0.9rem;
    }

    .disclaimer-inline {
        font-size: 0.7rem;
    }

    .explore-section {
        padding: 16px;
    }

    .word-chip {
        padding: 6px 12px;
        font-size: 0.9rem;
    }

    /* Sticky Header Mobile */
    .sticky-header {
        padding: 16px;
        position: sticky;
        top: 0;
    }

    .sticky-header h2 {
        font-size: 1.25rem;
        margin-bottom: 8px;
    }

    .dict-subtitle {
        font-size: 0.8rem;
        margin-bottom: 12px;
    }

    .scroll-list {
        padding: 16px;
        overflow-y: auto;
    }

    /* Dictionary Mobile */
    .dict-results {
        padding: 16px;
    }

    .dict-card {
        padding: 16px;
        margin-bottom: 12px;
    }

    .dict-word {
        font-size: 1.25rem;
    }

    .dict-search-input {
        max-width: 100%;
        padding: 10px 14px;
        font-size: 1rem;
    }

    /* Glossary Mobile */
    .data-row {
        grid-template-columns: 1fr !important;
        gap: 8px;
    }

    .data-row.glossary-row {
        padding: 12px 0;
    }

    .cell-primary {
        font-size: 1rem;
    }

    .cell-type {
        order: -1;
    }

    .cell-content {
        font-size: 0.9rem;
    }

    /* Filter Controls Mobile */
    .filter-controls {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
        flex-wrap: nowrap;
    }

    .filter-btn {
        flex-shrink: 0;
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

/* Mobile - Small screens */
@media (max-width: 480px) {
    .sidebar {
        padding: 10px 12px;
    }

    .brand {
        gap: 8px;
    }

    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }

    .logo-text {
        font-size: 0.9rem;
    }

    .nav-item {
        padding: 6px 10px;
        font-size: 0.8rem;
    }

    .greeting-container.compact h1 {
        font-size: 1.3rem;
    }

    .home-subtitle {
        font-size: 0.85rem;
    }

    .word-chips {
        gap: 6px;
    }

    .word-chip {
        padding: 5px 10px;
        font-size: 0.85rem;
    }

    .sticky-header h2 {
        font-size: 1.1rem;
    }

    .dict-card {
        padding: 14px;
    }

    .dict-word {
        font-size: 1.15rem;
    }

    .def-text {
        font-size: 0.9rem;
    }

    .dict-example {
        font-size: 0.85rem;
    }
}