/* CSS Variables */
:root {
    --color-primary: #0d9488;
    --color-primary-dark: #0f766e;
    --color-primary-light: #14b8a6;
    --color-accent: #3b82f6;
    --color-accent-dark: #2563eb;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-lighter: #9ca3af;
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-bg-lighter: #f3f4f6;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: var(--color-bg-lighter);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: var(--color-border);
    color: var(--color-text);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-text);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-light);
    font-size: 15px;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-links .btn {
    margin-left: 8px;
}

.nav-links .btn-primary {
    color: white;
}

.nav-links .btn-primary:hover {
    color: white;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition);
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
}

.hero-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
    background-color: rgba(13, 148, 136, 0.1);
    border-radius: 100px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-meta {
    display: flex;
    gap: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-text-light);
}

/* Section Header */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--color-text);
}

.section-header p {
    font-size: 18px;
    color: var(--color-text-light);
}

/* Features */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(13, 148, 136, 0.1);
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.feature-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Screenshots/Slider */
.screenshots {
    padding: 100px 0;
    background-color: var(--color-bg-light);
}

.slider-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.slider {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    background-color: var(--color-bg);
}

.slide {
    display: none;
    animation: fadeIn 0.5s ease;
}

.slide.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide img {
    width: 100%;
    height: auto;
}

.slide-caption {
    padding: 24px 32px;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border-light);
}

.slide-caption h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.slide-caption p {
    font-size: 15px;
    color: var(--color-text-light);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-70%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
    z-index: 10;
}

.slider-btn:hover {
    background-color: var(--color-bg-lighter);
    border-color: var(--color-primary);
}

.slider-btn svg {
    width: 20px;
    height: 20px;
    color: var(--color-text);
}

.slider-prev {
    left: -24px;
}

.slider-next {
    right: -24px;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-border);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.slider-dot.active,
.slider-dot:hover {
    background-color: var(--color-primary);
}

/* Installation */
.installation {
    padding: 100px 0;
}

.installation-steps {
    max-width: 700px;
    margin: 0 auto 48px;
}

.step {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: white;
    font-size: 16px;
    font-weight: 600;
    border-radius: 50%;
}

.step-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.step-content p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

.code-block {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background-color: var(--color-bg-lighter);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 14px;
}

.code-block code {
    flex: 1;
    color: var(--color-text);
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-light);
    transition: color var(--transition);
}

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

.requirements {
    max-width: 700px;
    margin: 0 auto;
    padding: 24px 32px;
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
}

.requirements h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.requirements ul {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.requirements li {
    font-size: 15px;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.requirements li::before {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

/* Keyboard Shortcuts */
.keyboard-shortcuts {
    padding: 80px 0;
    background-color: var(--color-bg-light);
}

.shortcuts-grid {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.shortcut {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--color-text-light);
}

kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    padding: 6px 10px;
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: 0 2px 0 var(--color-border);
}

/* CTA */
.cta {
    padding: 100px 0;
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--color-text);
}

.cta p {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background-color: var(--color-bg-lighter);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 15px;
    color: var(--color-text-light);
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 15px;
    color: var(--color-text-light);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--color-text-lighter);
}

.footer-bottom a {
    color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 1024px) {
    .slider-prev {
        left: 16px;
    }

    .slider-next {
        right: 16px;
    }
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: 24px;
        background-color: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links .btn {
        margin-left: 0;
        width: 100%;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .shortcuts-grid {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .cta h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 32px;
    }

    .hero-meta {
        flex-direction: column;
        gap: 16px;
    }

    .step {
        flex-direction: column;
    }

    .code-block {
        flex-direction: column;
        align-items: flex-start;
    }

    .code-block code {
        word-break: break-all;
    }

    .requirements ul {
        flex-direction: column;
        gap: 12px;
    }
}