/* ============================================
   MOBILE-FIRST RESPONSIVE DESIGN
   Base styles: Mobile (320px+)
   Breakpoints: Tablet (768px+), Desktop (1024px+)
   ============================================ */

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #10b981;
    --warning-color: #f59e0b;

    /* Spacing scale */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
}

/* ============================================
   BASE STYLES (MOBILE FIRST)
   ============================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ============================================
   HERO SECTION (MOBILE)
   ============================================ */

.hero {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-sm);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 12px;
    margin: var(--spacing-sm) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.logo {
    width: 48px;
    height: 48px;
    animation: bounce 2s ease-in-out infinite;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    line-height: 1.2;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: var(--spacing-sm) 0;
    font-weight: 300;
    line-height: 1.5;
}

.badges {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--spacing-md) 0;
}

.badges img {
    height: 18px;
    transition: transform 0.3s ease;
}

.badges img:hover {
    transform: scale(1.1);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    width: 100%;
    min-height: 48px;
    /* Touch-friendly target */
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* ============================================
   SECTIONS (MOBILE)
   ============================================ */

section {
    margin: var(--spacing-xl) 0;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
    padding: 0 var(--spacing-sm);
}

/* ============================================
   DEMO SECTION (MOBILE)
   ============================================ */

.demo-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 12px;
    background: var(--bg-dark);
}

.demo-description {
    color: var(--text-secondary);
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    padding: 0 var(--spacing-sm);
}

/* ============================================
   FEATURES GRID (MOBILE)
   ============================================ */

.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:active {
    transform: scale(0.98);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ============================================
   INSTALLATION (MOBILE)
   ============================================ */

.install-methods {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.install-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.install-card h3 {
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-light);
}

/* ============================================
   CODE BLOCKS (MOBILE)
   ============================================ */

.code-block {
    background: var(--bg-dark);
    padding: var(--spacing-md) var(--spacing-sm);
    padding-right: 60px;
    /* Space for copy button */
    border-radius: 10px;
    border: 1px solid var(--border-color);
    position: relative;
    margin-top: var(--spacing-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.code-block code {
    color: var(--success-color);
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    display: block;
    white-space: pre-wrap;
    word-break: break-all;
}

.copy-btn {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
    min-height: 36px;
    /* Touch-friendly */
    min-width: 60px;
}

.copy-btn:hover {
    background: var(--primary-dark);
}

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

/* ============================================
   USAGE EXAMPLES (MOBILE)
   ============================================ */

.usage-examples {
    display: grid;
    gap: var(--spacing-md);
}

.example {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.example:active {
    transform: scale(0.98);
}

.example h3 {
    font-size: 1.15rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-light);
}

.example-description {
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    font-style: italic;
    font-size: 0.9rem;
}

/* ============================================
   CLI OPTIONS TABLE (MOBILE)
   ============================================ */

.options-table {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    min-width: 600px;
    /* Ensure table doesn't get too cramped */
    border-collapse: collapse;
}

thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

th {
    padding: var(--spacing-sm);
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
}

td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background 0.3s ease;
}

tbody tr:active {
    background: var(--bg-card-hover);
}

td code {
    background: var(--bg-dark);
    padding: 4px 6px;
    border-radius: 4px;
    color: var(--success-color);
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* ============================================
   FOOTER (MOBILE)
   ============================================ */

.footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-sm);
    margin-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-color);
}

.footer-content p {
    color: var(--text-secondary);
    margin: var(--spacing-xs) 0;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.footer a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.3s ease;
    padding: var(--spacing-xs);
    min-height: 44px;
    /* Touch-friendly */
    display: inline-flex;
    align-items: center;
}

.footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.install-card,
.example {
    animation: fadeIn 0.6s ease-out;
}

/* ============================================
   TABLET STYLES (768px+)
   ============================================ */

@media (min-width: 768px) {
    :root {
        --spacing-xs: 10px;
        --spacing-sm: 20px;
        --spacing-md: 30px;
        --spacing-lg: 40px;
        --spacing-xl: 60px;
        --spacing-2xl: 80px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
        border-radius: 16px;
        margin: var(--spacing-md) 0;
    }

    .logo-container {
        flex-direction: row;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .logo {
        width: 60px;
        height: 60px;
    }

    .title {
        font-size: 3rem;
    }

    .subtitle {
        font-size: 1.25rem;
        margin: var(--spacing-md) 0;
    }

    .badges img {
        height: 20px;
    }

    .cta-buttons {
        flex-direction: row;
        gap: var(--spacing-md);
        justify-content: center;
    }

    .btn {
        width: auto;
        padding: 14px 28px;
        font-size: 1rem;
    }

    .section-title {
        font-size: 2.25rem;
        margin-bottom: var(--spacing-xl);
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .feature-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .feature-card:hover {
        transform: translateY(-5px);
        border-color: var(--primary-color);
        box-shadow: 0 15px 30px rgba(99, 102, 241, 0.2);
    }

    .install-methods {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .install-card {
        padding: var(--spacing-lg);
    }

    .code-block code {
        font-size: 0.9rem;
    }

    .example {
        padding: var(--spacing-lg);
    }

    .example:hover {
        border-color: var(--primary-color);
        box-shadow: 0 10px 30px rgba(99, 102, 241, 0.15);
    }

    th {
        padding: var(--spacing-md);
        font-size: 1rem;
    }

    td {
        padding: var(--spacing-md);
        font-size: 0.95rem;
    }
}

/* ============================================
   DESKTOP STYLES (1024px+)
   ============================================ */

@media (min-width: 1024px) {
    .hero {
        padding: var(--spacing-2xl) var(--spacing-xl);
        border-radius: 20px;
        margin: var(--spacing-xl) 0;
    }

    .logo {
        width: 80px;
        height: 80px;
    }

    .title {
        font-size: 4rem;
    }

    .subtitle {
        font-size: 1.5rem;
        margin: var(--spacing-lg) 0 var(--spacing-xl);
    }

    .cta-buttons {
        gap: var(--spacing-lg);
    }

    .btn {
        padding: 14px 32px;
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-icon {
        font-size: 3rem;
    }

    .feature-card h3 {
        font-size: 1.5rem;
    }

    .feature-card p {
        font-size: 1rem;
    }

    .install-card h3 {
        font-size: 1.5rem;
    }

    .code-block code {
        font-size: 0.95rem;
    }

    .example h3 {
        font-size: 1.3rem;
    }

    th {
        font-size: 1.1rem;
    }

    td {
        font-size: 1rem;
    }

    tbody tr:hover {
        background: var(--bg-card-hover);
    }
}

/* ============================================
   LARGE DESKTOP (1440px+)
   ============================================ */

@media (min-width: 1440px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}