/* ===========================
   Janak - RL-GAN Molecular Generation Platform
   Advanced Molecular Design CSS
   =========================== */

/* ===== CSS Variables ===== */
:root {
    /* Primary Colors - Purple/Pink theme for molecular generation */
    --primary-color: #8b5cf6;
    --primary-dark: #7c3aed;
    --primary-light: #a78bfa;
    --secondary-color: #ec4899;
    --secondary-dark: #db2777;
    --secondary-light: #f472b6;

    /* Accent Colors */
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-violet: #7c3aed;
    --accent-fuchsia: #d946ef;

    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #fafafa;
    --light-gray: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #64748b;
    --text-white: #ffffff;

    /* Border Colors */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;

    /* Background Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #d946ef 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    --gradient-soft: linear-gradient(135deg, #f8fafc 0%, #f3e8ff 100%);

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);

    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Typography */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;

    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--white);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

body.js-loaded {
    opacity: 1;
}

/* ===== Container ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.janak-text {
    font-family: 'Plus Jakarta Sans', Arial, sans-serif;
    font-size: 20px;
    font-weight: 800;
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.nav-links a:hover::after {
    width: 100%;
}

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

.nav-cta {
    padding: 0.625rem 1.5rem !important;
    background: var(--gradient-primary);
    color: var(--text-white) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: var(--transition-base);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.4);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-base);
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(0.375rem, 0.375rem);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(0.375rem, -0.375rem);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 2rem;
        border-top: 1px solid var(--border-light);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition-base);
        pointer-events: none;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-light);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-cta {
        display: inline-block;
        margin-top: 1rem;
    }
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: 10rem 0 8rem;
    overflow: hidden;
    background: linear-gradient(180deg, var(--white) 0%, var(--light-gray) 100%);
}

.gradient-mesh {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.4;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 40%, rgba(236, 72, 153, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 1.25rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    animation: fadeInDown 0.8s ease-out;
}

.badge-dot {
    width: 0.5rem;
    height: 0.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.hero-stat {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.hero-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    opacity: 0.1;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 500;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    transform: rotate(-45deg);
}

/* ===== Highlights Section ===== */
.highlights-section {
    padding: 6rem 0;
    background: var(--white);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.highlight-card {
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    transition: var(--transition-base);
    text-align: center;
}

.highlight-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.highlight-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.highlight-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.highlight-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Framework Section ===== */
.framework-section {
    padding: 8rem 0;
    background: var(--light-gray);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.framework-stages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.stage-card {
    position: relative;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
    overflow: hidden;
}

.stage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

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

.stage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.stage-number {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.1;
    line-height: 1;
}

.stage-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stage-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
}

.stage-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.stage-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    color: var(--primary-color);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

/* ===== Workflow Section ===== */
.workflow-section {
    padding: 8rem 0;
    background: var(--white);
}

.workflow-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 4rem;
}

.workflow-image-box {
    position: sticky;
    top: 120px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-xl);
    transition: var(--transition-base);
}

.workflow-image-box:hover {
    box-shadow: var(--shadow-2xl);
    transform: scale(1.02);
}

.workflow-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
}

.workflow-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.workflow-description {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.workflow-description p {
    margin-bottom: 1.5rem;
}

.workflow-description p:last-child {
    margin-bottom: 0;
}

.workflow-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.workflow-feature {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.workflow-feature:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.workflow-feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.workflow-feature-text h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.workflow-feature-text p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .workflow-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .workflow-image-box {
        position: relative;
        top: 0;
    }
}

/* ===== Capabilities Section ===== */
.capabilities-section {
    padding: 8rem 0;
    background: var(--light-gray);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.capability-card {
    padding: 3rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.capability-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-light);
}

.capability-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.capability-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
}

.capability-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== Features Section ===== */
.features-section {
    padding: 8rem 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.feature-card {
    padding: 3rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
    opacity: 1 !important;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
}

.feature-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== Metrics Section ===== */
.metrics-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-white);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.metric-card {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-base);
}

.metric-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.metric-value {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.metric-label {
    font-size: 1.125rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0.75rem;
}

.metric-description {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
    position: relative;
    padding: 8rem 0;
    background: var(--light-gray);
    overflow: hidden;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.cta-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.4);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
}

.btn-cta {
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}

.btn-cta:hover {
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.5);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--gray-900);
    color: var(--text-white);
}

/* Tailwind-style utilities */
.max-w-7xl { max-width: 80rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.gap-8 { gap: 2rem; }
.h-8 { height: 2rem; }
.h-6 { height: 1.5rem; }
.w-6 { width: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-4 { margin-top: 1rem; }
.mt-12 { margin-top: 3rem; }
.pt-8 { padding-top: 2rem; }
.text-gray-300 { color: var(--gray-300); }
.text-gray-400 { color: var(--gray-400); }
.text-white { color: var(--text-white); }
.text-purple-400 { color: #c084fc; }
.text-sm { font-size: 0.875rem; }
.font-semibold { font-weight: 600; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-x-6 > * + * { margin-left: 1.5rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.border-t { border-top-width: 1px; }
.border-gray-800 { border-color: var(--gray-800); }
.brightness-100 { filter: brightness(1); }
.invert { filter: invert(1) brightness(100); }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}
.hover\:text-white:hover { color: var(--text-white); }
.hover\:text-purple-300:hover { color: #d8b4fe; }
.transition-colors { transition: color 0.3s ease; }

@media (min-width: 640px) {
    .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
}

@media (min-width: 768px) {
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .md\:col-span-1 { grid-column: span 1 / span 1; }
    .md\:flex-row { flex-direction: row; }
    .md\:mt-0 { margin-top: 0; }
}

@media (min-width: 1024px) {
    .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Fade-in animation class */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero {
        padding: 8rem 0 6rem;
    }

    .framework-stages,
    .capabilities-grid,
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 7rem 0 5rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

    .framework-stages,
    .capabilities-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .workflow-feature {
        flex-direction: column;
        text-align: center;
    }

    .workflow-feature:hover {
        transform: translateY(-6px);
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .stage-card,
    .capability-card,
    .feature-card {
        padding: 2rem;
    }
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== Print Styles ===== */
@media print {
    .navbar,
    .hero-scroll-indicator,
    .cta-section,
    footer {
        display: none;
    }

    body {
        background: white;
    }

    .hero,
    .highlights-section,
    .framework-section,
    .workflow-section,
    .capabilities-section,
    .features-section,
    .metrics-section {
        padding: 2rem 0;
        page-break-inside: avoid;
    }
}