/* ============================================
   DEVELOPER GUY — Premium Dark Theme
   Inspired by Linear, Vercel, Stripe
   ============================================ */

/* --- CSS Variables --- */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(99, 102, 241, 0.4);
    --text-primary: #f0f0f5;
    --text-secondary: #8b8b9e;
    --text-tertiary: #5c5c72;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
    --accent-gradient-hover: linear-gradient(135deg, #818cf8, #a78bfa, #c084fc);
    --accent-glow: rgba(99, 102, 241, 0.15);
    --success: #22c55e;
    --warning: #f59e0b;
    --info: #3b82f6;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.08);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 20px rgba(0, 0, 0, 0.15);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
    --max-width-wide: 1400px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    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-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent-secondary);
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

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

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.section-label::before {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

/* --- Layout --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 120px 0;
    position: relative;
}

.section-divider {
    width: 100%;
    height: 1px;
    background: var(--border-subtle);
    max-width: var(--max-width);
    margin: 0 auto;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 24px;
    transition: all var(--transition-medium);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
}

.navbar-inner {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.navbar-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    color: white;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.navbar-links a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.navbar-links a:hover,
.navbar-links a.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.navbar-cta {
    padding: 8px 20px !important;
    background: var(--accent-gradient) !important;
    color: white !important;
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
    font-size: 0.85rem !important;
    transition: all var(--transition-fast) !important;
}

.navbar-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: none;
    font-family: var(--font-body);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 15px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(99, 102, 241, 0.35);
    color: white;
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

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

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-medium);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

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

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 50% 80%, rgba(168, 85, 247, 0.06) 0%, transparent 40%);
    animation: heroGlow 15s ease-in-out infinite alternate;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 100%, var(--bg-primary) 0%, transparent 70%);
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-2%, 2%) scale(1.05); }
    100% { transform: translate(2%, -1%) scale(1); }
}

/* Animated grid background */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease-out;
}

.hero-badge .badge-dot {
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero h1 {
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero .hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-tertiary);
    font-size: 0.8rem;
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border-medium);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 3px;
    animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0.3; }
}

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

/* --- Stats Section --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 32px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-medium);
}

.stat-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.stat-number {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* --- Grid Layouts --- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* --- App Cards --- */
.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-medium);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, var(--accent-gradient));
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.app-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-medium);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
    color: inherit;
}

.app-card:hover::before {
    opacity: 1;
}

.app-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.app-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.app-card-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.app-card-tagline {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.app-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    flex-grow: 1;
}

.app-card-footer {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-badge.live {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-badge.in-review {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-badge.in-development {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.status-badge.coming-soon {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-secondary);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.status-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.status-badge.live .dot {
    animation: pulse 2s ease-in-out infinite;
}

/* --- Tech Stack Badges --- */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    border-color: var(--border-glow);
    color: var(--text-primary);
    background: var(--accent-glow);
}

/* --- Services Grid --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition-medium);
    position: relative;
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-medium);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.service-card .card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent-primary);
    margin-bottom: 24px;
}

.service-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-highlights span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    padding: 4px 10px;
    background: var(--bg-glass);
    border-radius: 100px;
}

.service-highlights span::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--accent-primary);
    border-radius: 50%;
}

/* --- How It Works --- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: var(--border-subtle);
    z-index: 0;
}

.step-card {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--border-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin: 0 auto 20px;
    transition: all var(--transition-medium);
}

.step-card:hover .step-number {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px var(--accent-glow);
}

.step-card h4 {
    margin-bottom: 8px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* --- Showcase Page --- */
.showcase-hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.showcase-hero .hero-bg {
    opacity: 0.6;
}

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

.showcase-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.showcase-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    overflow: hidden;
}

.showcase-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.showcase-hero h1 {
    margin-bottom: 16px;
}

.showcase-hero .tagline {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.showcase-ctas {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.problem-solution {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.ps-card {
    padding: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.ps-card.problem {
    background: rgba(239, 68, 68, 0.03);
    border-color: rgba(239, 68, 68, 0.1);
}

.ps-card.solution {
    background: rgba(34, 197, 94, 0.03);
    border-color: rgba(34, 197, 94, 0.1);
}

.ps-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.ps-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.features-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.features-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.features-list li:hover {
    border-color: var(--border-medium);
    background: var(--bg-card-hover);
}

.features-list li .fa-check {
    color: var(--success);
    margin-top: 3px;
    flex-shrink: 0;
}

/* --- Blog --- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-medium);
    text-decoration: none;
    color: inherit;
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-medium);
    box-shadow: var(--shadow-card);
    color: inherit;
}

.blog-card-body {
    padding: 28px;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.blog-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    transition: color var(--transition-fast);
}

.blog-card:hover h3 {
    color: var(--accent-primary);
}

.blog-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 16px;
}

.blog-tag {
    font-size: 0.75rem;
    padding: 3px 10px;
    background: var(--bg-glass);
    border-radius: 100px;
    color: var(--text-tertiary);
}

/* --- Blog Article --- */
.article-header {
    padding: 160px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.article-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

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

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-bottom: 24px;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-header h1 {
    max-width: 800px;
    margin: 0 auto 20px;
    font-size: clamp(2rem, 4vw, 2.8rem);
}

.article-header .excerpt {
    max-width: 650px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.article-body {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 24px;
}

.article-body h2 {
    font-size: 1.6rem;
    margin: 48px 0 20px;
    padding-top: 16px;
}

.article-body h3 {
    font-size: 1.25rem;
    margin: 36px 0 16px;
}

.article-body p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.85;
    margin-bottom: 20px;
}

.article-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.article-body ul, .article-body ol {
    color: var(--text-secondary);
    margin: 0 0 24px 24px;
    line-height: 1.85;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body code {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    color: var(--accent-primary);
}

.article-body pre {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 24px;
    overflow-x: auto;
    margin: 24px 0;
}

.article-body pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.article-body blockquote {
    border-left: 3px solid var(--accent-primary);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--bg-card);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-body blockquote p {
    margin-bottom: 0;
    color: var(--text-primary);
    font-style: italic;
}

.article-nav {
    max-width: 760px;
    margin: 60px auto 0;
    padding: 32px 24px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.article-nav a {
    font-weight: 600;
    font-size: 0.9rem;
}

/* --- About Page --- */
.about-hero {
    padding: 160px 0 80px;
    text-align: center;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h3 {
    margin-bottom: 16px;
    margin-top: 32px;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-sidebar .card {
    margin-bottom: 24px;
}

.detail-list {
    list-style: none;
}

.detail-list li {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.9rem;
}

.detail-list li:last-child {
    border-bottom: none;
}

.detail-list .label {
    color: var(--text-tertiary);
}

.detail-list .value {
    color: var(--text-primary);
    font-weight: 600;
}

/* --- Timeline --- */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-subtle);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.timeline-year {
    font-size: 0.8rem;
    color: var(--accent-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.timeline-item h4 {
    margin-bottom: 6px;
}

.timeline-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* --- Contact / CTA Section --- */
.cta-section {
    text-align: center;
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 60%);
}

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

.cta-section h2 {
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 32px;
    font-size: 1.1rem;
}

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 60px 0 30px;
    background: var(--bg-secondary);
}

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

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 16px;
    max-width: 300px;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-subtle);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-tech {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-tech .dot {
    width: 4px;
    height: 4px;
    background: var(--accent-primary);
    border-radius: 50%;
}

/* --- Page Header (reusable for inner pages) --- */
.page-header {
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

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

.page-header h1 {
    margin-bottom: 16px;
}

.page-header .subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Scroll Animations --- */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-in.delay-1 { transition-delay: 0.1s; }
.animate-in.delay-2 { transition-delay: 0.2s; }
.animate-in.delay-3 { transition-delay: 0.3s; }
.animate-in.delay-4 { transition-delay: 0.4s; }
.animate-in.delay-5 { transition-delay: 0.5s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .grid-4, .stats-grid, .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .problem-solution { grid-template-columns: 1fr; }
    .steps-grid::before { display: none; }
}

@media (max-width: 768px) {
    section { padding: 80px 0; }

    .navbar-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-subtle);
        flex-direction: column;
        padding: 80px 24px 24px;
        gap: 4px;
        transition: right var(--transition-medium);
    }

    .navbar-links.open {
        right: 0;
    }

    .navbar-links a {
        width: 100%;
        padding: 12px 16px;
    }

    .nav-toggle {
        display: flex;
    }

    .grid-2, .grid-3, .blog-grid, .services-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-list { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .hero-buttons { flex-direction: column; align-items: center; }

    .hero h1 { font-size: 2.5rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2rem; }
    .card { padding: 24px; }
    .service-card { padding: 24px; }
}