@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ==========================================
   CSS VARIABLES & DESIGN SYSTEM
   ========================================== */
:root {
    /* Color Palette - Default Dark Mode (Stripe/Vercel Vibe) */
    --bg-primary: #030712;
    --bg-secondary: #0b0f19;
    --bg-tertiary: #111827;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --primary: #2563eb;
    --primary-rgb: 37, 99, 235;
    --secondary: #0ea5e9;
    --accent: #06b6d4;
    --accent-rgb: 6, 182, 212;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    
    --bg-glass: rgba(11, 15, 25, 0.7);
    --bg-glass-heavy: rgba(3, 7, 18, 0.85);
    --backdrop-blur: 16px;
    
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
    --glow-color: rgba(37, 99, 235, 0.15);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Mode Theme Overrides */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --primary: #2563eb;
    --primary-rgb: 37, 99, 235;
    --secondary: #0ea5e9;
    --accent: #06b6d4;
    --accent-rgb: 6, 182, 212;
    
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.16);
    
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-heavy: rgba(255, 255, 255, 0.9);
    
    --card-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
    --glow-color: rgba(37, 99, 235, 0.05);
}

/* ==========================================
   BASE & RESET STYLES
   ========================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

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

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

ul {
    list-style: none;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==========================================
   LAYOUT & UTILITIES
   ========================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.section {
    padding-top: 6rem;
    padding-bottom: 6rem;
    position: relative;
}

@media (min-width: 768px) {
    .section {
        padding-top: 8rem;
        padding-bottom: 8rem;
    }
}

.flex { display: flex; }
.grid { display: grid; }

.section-header {
    text-align: center;
    max-width: 768px;
    margin: 0 auto 4rem auto;
}

.section-tag {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--secondary);
    margin-bottom: 0.75rem;
    display: inline-block;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ==========================================
   GLASSMORPHISM & PREMIUM EFFECTS
   ========================================== */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    transition: border-color var(--transition-normal), background var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-panel:hover {
    border-color: var(--border-hover);
}

/* Ambient glow blobs */
.glow-blob {
    position: absolute;
    border-radius: var(--radius-full);
    filter: blur(80px);
    z-index: 0;
    opacity: 0.15;
    pointer-events: none;
    transition: opacity var(--transition-slow);
}

.glow-blob-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    left: -100px;
}

.glow-blob-2 {
    width: 500px;
    height: 500px;
    background: var(--accent);
    bottom: -150px;
    right: -150px;
}

/* Shimmer Light Reflection Effect on cards */
.shimmer-effect {
    position: relative;
    overflow: hidden;
}

.shimmer-effect::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 45%,
        rgba(255, 255, 255, 0.05) 50%,
        transparent 55%
    );
    transform: rotate(-45deg);
    transition: transform 0.5s ease;
    pointer-events: none;
}

.shimmer-effect:hover::after {
    transform: translate(50%, 50%) rotate(-45deg);
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: #1d4ed8;
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

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

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

.btn-accent {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(14, 165, 233, 0.3);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #1d4ed8, #0284c7);
    box-shadow: 0 6px 20px 0 rgba(14, 165, 233, 0.4);
    transform: translateY(-2px);
}

/* ==========================================
   STICKY NAVIGATION HEADER
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #ffffff 40%, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .logo {
    background: linear-gradient(135deg, #0f172a 40%, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px;
    color: white;
}

.nav-links {
    display: none;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    border-color: var(--border-hover);
    background: var(--bg-tertiary);
}

.theme-toggle-btn svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    transition: transform 0.5s ease;
}

.theme-toggle-btn:hover svg {
    transform: rotate(45deg);
}

/* Sun/Moon Display control */
.theme-toggle-btn .sun-icon { display: none; }
.theme-toggle-btn .moon-icon { display: block; }

[data-theme="light"] .theme-toggle-btn .sun-icon { display: block; }
[data-theme="light"] .theme-toggle-btn .moon-icon { display: none; }

/* Menu Toggle Button (Mobile) */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

/* Hamburger state */
.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Desktop Menu styles */
@media (min-width: 992px) {
    .menu-toggle { display: none; }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
    .nav-link {
        font-weight: 500;
        font-size: 0.95rem;
        color: var(--text-secondary);
        position: relative;
        padding: 0.5rem 0;
    }
    .nav-link:hover, .nav-link.active {
        color: var(--text-primary);
    }
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: width var(--transition-fast);
    }
    .nav-link:hover::after, .nav-link.active::after {
        width: 100%;
    }
}

/* Mobile Dropdown Nav Menu */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-link {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
    color: var(--text-primary);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 100px;
    padding-bottom: 60px;
    overflow: hidden;
}

/* Grid lines overlay */
.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 60px 60px;
    background-position: center;
    opacity: 0.15;
    mask-image: radial-gradient(ellipse at center, black, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black, transparent 70%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 10;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--secondary);
    margin-bottom: 1.5rem;
    gap: 0.5rem;
}

.hero-badge span.pulse {
    width: 8px;
    height: 8px;
    background-color: var(--secondary);
    border-radius: var(--radius-full);
    display: inline-block;
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(14, 165, 233, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(14, 165, 233, 0); }
}

.hero-title {
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 40%, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .hero-title {
    background: linear-gradient(135deg, #09090b 40%, #71717a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2.5rem auto;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
}

/* Hero dashboard / code widget illustration */
.hero-visual {
    margin-top: 1rem;
    perspective: 1000px;
    width: 100%;
}

.hero-dashboard {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-md);
    transform: rotateX(15deg) translateY(0);
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.8), 0 0 50px -10px var(--glow-color);
    transition: transform var(--transition-slow);
}

.hero-dashboard:hover {
    transform: rotateX(5deg) translateY(-10px);
}

.dashboard-header {
    height: 40px;
    display: flex;
    align-items: center;
    padding: 0 1rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
    gap: 0.5rem;
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.dashboard-body {
    padding: 1.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    text-align: left;
    color: #38bdf8;
    background: rgba(0, 0, 0, 0.4);
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
    overflow-x: auto;
}

.dashboard-body .keyword { color: #f472b6; }
.dashboard-body .string { color: #34d399; }
.dashboard-body .comment { color: var(--text-muted); }
.dashboard-body .const { color: #fbbf24; }

/* ==========================================
   STATS SECTION
   ========================================== */
.stats-section {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: rgba(11, 15, 25, 0.3);
}

.stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    text-align: center;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

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

.stat-number {
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 800;
    color: var(--text-primary);
    background: linear-gradient(135deg, #ffffff, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.25rem;
}

[data-theme="light"] .stat-number {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================
   ABOUT & BENTO GRID SECTION
   ========================================== */
.bento-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .bento-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-auto-flow: dense;
    }
    
    .col-span-2 {
        grid-column: span 2;
    }
    
    .row-span-2 {
        grid-row: span 2;
    }
}

.bento-card {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.bento-icon {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    margin-bottom: 2rem;
}

.bento-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.bento-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.bento-badge-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.badge-tag {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
}

/* ==========================================
   SERVICES SECTION
   ========================================== */
.services-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--secondary);
    box-shadow: 0 20px 40px -15px rgba(14, 165, 233, 0.25);
}

.service-card::before, .bento-card::before, .pricing-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: inherit;
    background: radial-gradient(
        300px circle at var(--mouse-x, 0px) var(--mouse-y, 0px),
        rgba(255, 255, 255, 0.08),
        transparent 80%
    );
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

[data-theme="light"] .service-card::before, 
[data-theme="light"] .bento-card::before, 
[data-theme="light"] .pricing-card::before {
    background: radial-gradient(
        300px circle at var(--mouse-x, 0px) var(--mouse-y, 0px),
        rgba(37, 99, 235, 0.08),
        transparent 80%
    );
}

.service-card:hover::before, .bento-card:hover::before, .pricing-card:hover::before {
    opacity: 1;
}

.service-card > *, .bento-card > *, .pricing-card > * {
    position: relative;
    z-index: 2;
}

.popular-badge {
    z-index: 3 !important;
}

.service-icon {
    width: 56px;
    height: 56px;
    background: rgba(14, 165, 233, 0.1);
    color: var(--secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    transition: transform var(--transition-normal);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.service-link svg {
    transition: transform var(--transition-fast);
}

.service-card:hover .service-link svg {
    transform: translateX(4px);
}

/* ==========================================
   PORTFOLIO SECTION
   ========================================== */
.portfolio-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 3rem;
}

.portfolio-tab {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.portfolio-tab:hover, .portfolio-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

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

@media (min-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.portfolio-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.portfolio-img-container {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 10%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.portfolio-card:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-tags {
    display: flex;
    gap: 0.5rem;
}

.portfolio-card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.portfolio-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.portfolio-card-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.portfolio-btn {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ==========================================
   DEVELOPMENT PROCESS TIMELINE
   ========================================== */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

@media (max-width: 767px) {
    .timeline::before {
        left: 20px;
    }
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    top: 0;
    left: 50%;
    width: 24px;
    height: 24px;
    background: var(--bg-primary);
    border: 4px solid var(--secondary);
    border-radius: var(--radius-full);
    transform: translateX(-50%);
    z-index: 10;
    transition: background-color var(--transition-fast);
}

@media (max-width: 767px) {
    .timeline-dot {
        left: 20px;
        transform: translateX(-50%);
    }
}

.timeline-item:hover .timeline-dot {
    background-color: var(--secondary);
}

.timeline-content {
    width: 45%;
    padding: 2rem;
    position: relative;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
}

@media (max-width: 767px) {
    .timeline-content {
        width: calc(100% - 50px);
        margin-left: 50px !important;
    }
}

.timeline-step {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ==========================================
   PRICING SECTION
   ========================================== */
.pricing-toggle-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
}

.pricing-toggle-label {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.pricing-toggle-label.active {
    color: var(--text-primary);
}

.pricing-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 32px;
}

.pricing-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    transition: .4s;
    border-radius: var(--radius-full);
}

.slider::before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-primary);
    transition: .4s;
    border-radius: var(--radius-full);
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider::before {
    transform: translateX(28px);
}

.pricing-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: stretch;
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.pricing-card {
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.pricing-card.popular {
    border-color: var(--primary);
    box-shadow: 0 15px 40px -10px rgba(37, 99, 235, 0.2);
}

.popular-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
}

.pricing-tier {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: baseline;
}

.pricing-price span.period {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-left: 0.25rem;
}

.pricing-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.pricing-features {
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.pricing-feature svg {
    color: var(--secondary);
    flex-shrink: 0;
}

/* ==========================================
   TESTIMONIALS SECTION
   ========================================== */
.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonials-track {
    display: flex;
    transition: transform var(--transition-normal);
}

.testimonial-slide {
    min-width: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    color: #fbbf24;
    margin-bottom: 1.5rem;
}

.testimonial-quote {
    font-size: clamp(1.125rem, 2vw, 1.35rem);
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: 2rem;
    position: relative;
}

.testimonial-quote::before, .testimonial-quote::after {
    font-size: 3rem;
    color: var(--border-color);
    position: absolute;
    line-height: 0;
}

.testimonial-quote::before {
    content: '“';
    left: -2rem;
    top: 1rem;
}

.testimonial-quote::after {
    content: '”';
    right: -2rem;
    bottom: -1rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.testimonial-meta {
    text-align: left;
}

.testimonial-name {
    font-weight: 600;
    font-size: 1rem;
}

.testimonial-role {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.slider-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-btn:hover {
    border-color: var(--border-hover);
    background: var(--bg-tertiary);
    transform: scale(1.05);
}

/* ==========================================
   FAQ SECTION
   ========================================== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.faq-item:hover {
    border-color: var(--border-hover);
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    gap: 1rem;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease-out, padding var(--transition-normal);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem 1.5rem;
    max-height: 500px; /* high threshold for smooth slide-down */
}

.faq-icon {
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* ==========================================
   CONTACT SECTION & FORM
   ========================================== */
.contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 1.2fr 1.8fr;
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-method {
    display: flex;
    gap: 1rem;
}

.contact-method-icon {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-method-details h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-method-details p, .contact-method-details a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-form {
    padding: 3rem;
}

@media (max-width: 576px) {
    .contact-form {
        padding: 2rem 1.5rem;
    }
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 576px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-full-width {
        grid-column: span 2;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
}

.form-input:focus {
    border-color: var(--primary);
    background: rgba(0, 0, 0, 0.2);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================
   FOOTER SECTION
   ========================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding-top: 5rem;
    padding-bottom: 2.5rem;
}

.footer-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.5fr repeat(3, 1fr);
    }
}

.footer-about p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    max-width: 320px;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-tertiary);
    transform: scale(1.05);
}

.footer-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-newsletter p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-input {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
    font-size: 0.9rem;
}

.newsletter-input:focus {
    border-color: var(--primary);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
    }
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

/* ==========================================
   FLOATING ELEMENTS
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.3);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #1d4ed8;
    transform: translateY(-4px);
}

.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: #25d366;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(37, 211, 102, 0.3);
    z-index: 99;
    transition: all var(--transition-normal);
}

.whatsapp-float:hover {
    background: #20ba5a;
    transform: translateY(-4px);
}

/* Cookie consent styling */
.cookie-consent {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(150px);
    width: 90%;
    max-width: 500px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 1000;
    transition: transform var(--transition-normal);
}

@media (min-width: 576px) {
    .cookie-consent {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.cookie-consent.active {
    transform: translateX(-50%) translateY(0);
}

.cookie-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.cookie-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    background: var(--text-primary);
    color: var(--bg-primary);
    cursor: pointer;
    font-weight: 600;
    white-space: nowrap;
}

/* ==========================================
   PORTFOLIO CASE STUDY MODAL
   ========================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    padding: 1.5rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 100%;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 2.5rem;
    position: relative;
}

.modal-close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close-btn:hover {
    background: var(--bg-tertiary);
}

.modal-header-img {
    aspect-ratio: 16 / 9;
    width: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}

.modal-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.modal-body {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.modal-body h3 {
    color: var(--text-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.modal-body p {
    margin-bottom: 1rem;
}

/* Partner Logo slider / Marquee */
.marquee-container {
    width: 100%;
    overflow: hidden;
    padding: 2rem 0;
    position: relative;
}

.marquee-container::before, .marquee-container::after {
    content: "";
    position: absolute;
    top: 0;
    width: 100px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.marquee-container::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-primary), transparent);
}

.marquee-container::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-primary), transparent);
}

.marquee-content {
    display: flex;
    gap: 4rem;
    width: max-content;
    animation: marquee 25s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.marquee-item {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==========================================
   LOBBY / LOADER
   ========================================== */
.loader-wrapper {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: var(--bg-primary);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loader-logo {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -0.04em;
    color: white;
}

.loader-bar {
    width: 200px;
    height: 2px;
    background-color: var(--border-color);
    border-radius: var(--radius-full);
    position: relative;
    overflow: hidden;
}

.loader-progress {
    position: absolute;
    top: 0; left: 0;
    height: 100%;
    width: 0%;
    background-color: var(--secondary);
    border-radius: var(--radius-full);
    animation: loadProgress 2s ease-in-out forwards;
}

@keyframes loadProgress {
    0% { width: 0%; }
    50% { width: 60%; }
    100% { width: 100%; }
}