/* ==========================================================================
   Zarvilla Technologies Premium Design System
   Inspired by: UnBound X, ustwo, Infosion, STRV, and Evil Martians
   ========================================================================== */

/* Design Tokens & CSS Custom Properties */
:root {
    /* Color Palette */
    --bg-light: #f6f8fc;
    --bg-dark-core: #07090e;
    
    --text-light-main: #13182C;
    --text-light-muted: #4e5668;
    
    --text-dark-main: #f7fafc;
    --text-dark-muted: #a0aec0;
    
    --accent-blue: #E50712;
    --accent-blue-glow: rgba(229, 7, 18, 0.15);
    
    --accent-purple: #13182C;
    --accent-purple-glow: rgba(19, 24, 44, 0.15);
    
    --accent-cyan: #06b6d4;
    --accent-cyan-glow: rgba(6, 182, 212, 0.15);
    
    /* Layout & Fonts */
    --font-primary: 'Outfit', 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Borders & Glassmorphism */
    --border-light: rgba(12, 14, 20, 0.08);
    --border-dark: rgba(247, 250, 252, 0.08);
    --glass-bg-light: rgba(255, 255, 255, 0.7);
    --glass-bg-dark: rgba(7, 9, 14, 0.7);
    
    /* Transitions */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-light-main);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition-smooth);
}

/* Theme Scroll States (Controlled via script.js IntersectionObserver) */
body.theme-light {
    background-color: var(--bg-light);
    color: var(--text-light-main);
}

body.theme-dark {
    background-color: var(--bg-dark-core);
    color: var(--text-dark-main);
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-center {
    text-align: center;
}

.text-light {
    color: var(--text-dark-main) !important;
}

.text-light-muted {
    color: var(--text-dark-muted) !important;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

p {
    font-family: var(--font-body);
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 50%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Shifting Mesh Background Animation (ustwo Inspired) */
.mesh-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120vh;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
    opacity: 0.85;
    transition: var(--transition-smooth);
}

.theme-dark .mesh-bg-container {
    opacity: 0.3;
}

.mesh-sphere {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    mix-blend-mode: multiply;
    animation: floatMesh 20s infinite alternate ease-in-out;
}

.sphere-1 {
    top: -10%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: rgba(37, 99, 235, 0.25);
    animation-delay: 0s;
}

.sphere-2 {
    top: 20%;
    right: 5%;
    width: 600px;
    height: 600px;
    background: rgba(124, 58, 237, 0.22);
    animation-delay: 4s;
}

.sphere-3 {
    top: 50%;
    left: -5%;
    width: 550px;
    height: 550px;
    background: rgba(6, 182, 212, 0.25);
    animation-delay: 8s;
}

@keyframes floatMesh {
    0% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(80px, 40px) scale(1.1);
    }
    100% {
        transform: translate(-40px, -60px) scale(0.9);
    }
}

/* ==========================================================================
   Header & Floating Capsule Navigation (UnBound X Inspired)
   ========================================================================== */
.header-container {
    position: fixed;
    top: 24px;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
    transition: var(--transition-smooth);
}

/* Capsule Design */
.capsule-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 90%;
    max-width: 900px;
    background: var(--glass-bg-light);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 80px;
    padding: 10px 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
}

/* Scrolled Active State */
.header-container.scrolled {
    top: 12px;
}

.header-container.scrolled .capsule-nav {
    width: 95%;
    max-width: 800px;
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

/* Dark Theme Header State */
.theme-dark .capsule-nav {
    background: rgba(7, 9, 14, 0.75);
    border-color: var(--border-dark);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.theme-dark .header-container.scrolled .capsule-nav {
    background: rgba(7, 9, 14, 0.9);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

/* Logo SVG Styling */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    height: 36px;
    transition: var(--transition-smooth);
}

.brand-logo-svg {
    height: 32px;
    width: auto;
    display: block;
}

/* SVG Internal Path Transition Rules */
.node-navy {
    fill: #13182C;
    stroke: #13182C;
    transition: fill 0.6s cubic-bezier(0.16, 1, 0.3, 1), stroke 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.node-red {
    fill: #E50712;
    stroke: #E50712;
    transition: fill 0.6s cubic-bezier(0.16, 1, 0.3, 1), stroke 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.text-brand-light {
    font-family: var(--font-primary);
    font-weight: 300;
    fill: #E50712;
    font-size: 32px;
    transition: fill 0.6s ease;
}

.text-brand-bold {
    font-family: var(--font-primary);
    font-weight: 700;
    fill: #E50712;
    font-size: 13.5px;
    letter-spacing: 0.16em;
    transition: fill 0.6s ease;
}

/* Theme Dark Logo Adjustments */
body.theme-dark .node-navy {
    fill: #FFFFFF;
    stroke: #FFFFFF;
}

/* Navigation Links */
.nav-links {
    display: flex;
    list-style: none;
    gap: 24px;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-light-muted);
    font-family: var(--font-primary);
    transition: var(--transition-fast);
    padding: 6px 4px;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-light-main);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 4px;
    right: 4px;
    height: 2px;
    background-color: var(--accent-blue);
    border-radius: 2px;
}

.theme-dark .nav-links a {
    color: var(--text-dark-muted);
}

.theme-dark .nav-links a:hover,
.theme-dark .nav-links a.active {
    color: var(--text-dark-main);
}

/* CTA Pill */
.cta-pill {
    text-decoration: none;
    background-color: var(--text-light-main);
    color: var(--bg-light);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 50px;
    transition: var(--transition-smooth);
}

.cta-pill:hover {
    background-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-blue-glow);
}

.theme-dark .cta-pill {
    background-color: var(--text-dark-main);
    color: var(--bg-dark-core);
}

.theme-dark .cta-pill:hover {
    background-color: var(--accent-cyan);
    box-shadow: 0 4px 15px var(--accent-cyan-glow);
    color: var(--bg-dark-core);
}

/* Responsive Nav Toggle and Mobile Drawer Styles */
.mobile-only-cta {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1100;
    padding: 0;
}

.toggle-bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-light-main);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

body.theme-dark .toggle-bar {
    background-color: var(--text-dark-main);
}

/* Hamburger animations */
.nav-toggle.open .toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open .toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open .toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Prevent screen scroll when menu is active */
body.nav-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(246, 248, 252, 0.94);
        backdrop-filter: blur(25px) saturate(180%);
        -webkit-backdrop-filter: blur(25px) saturate(180%);
        padding: 100px 40px;
        gap: 24px;
        box-shadow: -15px 0 35px rgba(19, 24, 44, 0.08);
        transition: right 0.5s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1000;
        border-left: 1px solid rgba(19, 24, 44, 0.06);
    }
    
    body.theme-dark .nav-links {
        background: rgba(7, 9, 14, 0.94);
        box-shadow: -15px 0 35px rgba(0, 0, 0, 0.6);
        border-left: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-links.open {
        right: 0;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        font-size: 1.3rem;
        font-weight: 600;
        width: 100%;
        display: block;
        padding: 8px 0;
    }
    
    .nav-links a.active::after {
        left: 0;
        right: auto;
        width: 24px;
        bottom: 2px;
    }
    
    .cta-pill {
        display: none; /* Hide desktop CTA */
    }
    
    .mobile-only-cta {
        display: block;
        margin-top: 15px;
        width: 100%;
    }
    
    .cta-pill-mobile {
        display: block;
        text-align: center;
        background-color: var(--accent-blue);
        color: white !important;
        font-size: 0.95rem;
        font-weight: 600;
        padding: 12px 24px;
        border-radius: 50px;
        box-shadow: 0 6px 15px var(--accent-blue-glow);
        transition: var(--transition-smooth);
        text-decoration: none;
    }
    
    body.theme-dark .cta-pill-mobile {
        background-color: var(--text-dark-main);
        color: var(--bg-dark-core) !important;
    }
}

/* ==========================================================================
   Hero Section (Light Mode Entrance)
   ========================================================================== */
.hero-section {
    padding-top: 180px;
    padding-bottom: 120px;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-text-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-badge {
    background: rgba(37, 99, 235, 0.08);
    color: var(--accent-blue);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 6px 14px;
    border-radius: 30px;
    margin-bottom: 24px;
    font-family: var(--font-primary);
}

.hero-title {
    font-size: 4rem;
    line-height: 1.05;
    margin-bottom: 24px;
    color: var(--text-light-main);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-light-muted);
    margin-bottom: 40px;
    max-width: 520px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
}

/* Buttons */
.btn-primary {
    text-decoration: none;
    background-color: var(--accent-blue);
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 28px;
    border-radius: 50px;
    box-shadow: 0 10px 20px var(--accent-blue-glow);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
    text-decoration: none;
    background-color: transparent;
    color: var(--text-light-main);
    border: 1px solid var(--border-light);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 28px;
    border-radius: 50px;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    background-color: rgba(12, 14, 20, 0.03);
    transform: translateY(-2px);
}

/* Cursor Parallax Card (UnBound X & Infosion Inspired) */
.hero-interactive-card {
    position: relative;
    width: 100%;
    max-width: 480px;
    height: 380px;
    perspective: 1000px;
}

.card-glass-layer {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transform-style: preserve-3d;
    transition: transform 0.1s ease-out;
}

/* Ambient glow behind card */
.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, rgba(37, 99, 235, 0) 70%);
    transform: translate(-50%, -50%);
    z-index: -1;
    filter: blur(40px);
}

/* Window Chrome Styles */
.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(12, 14, 20, 0.05);
    padding-bottom: 12px;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background-color: #ef4444; }
.terminal-dot.yellow { background-color: #f59e0b; }
.terminal-dot.green { background-color: #10b981; }

.terminal-title {
    font-size: 0.8rem;
    font-family: monospace;
    color: var(--text-light-muted);
    margin-left: 8px;
}

/* Code Styles */
.card-body {
    font-family: monospace;
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--text-light-main);
    padding: 20px 0;
}

.code-keyword { color: var(--accent-purple); font-weight: 600; }
.code-variable { color: var(--accent-blue); }
.code-class { color: var(--accent-cyan); font-weight: 600; }
.code-method { color: var(--accent-blue); }
.code-property { color: var(--text-light-muted); }
.code-string { color: #059669; }
.indent { margin-left: 20px; }

/* Progress bar inside card */
.speed-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 10px;
}

.indicator-bar {
    width: 12px;
    height: 4px;
    background-color: rgba(12, 14, 20, 0.08);
    border-radius: 2px;
}

.indicator-bar.active {
    background-color: var(--accent-blue);
}

.speed-indicator .label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-light-muted);
    margin-left: 8px;
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text-content {
        align-items: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        max-width: 100%;
    }
    
    .hero-interactive-card {
        margin: 0 auto;
    }
}

/* ==========================================================================
   Partners Section (Trusted By Strip)
   ========================================================================== */
.partners-section {
    padding: 50px 0;
    background: transparent;
    border-bottom: 1px solid rgba(19, 24, 44, 0.05);
    position: relative;
    z-index: 10;
    margin-bottom: 20px;
}

body.theme-dark .partners-section {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.partners-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--text-light-muted);
    text-align: center;
    margin-bottom: 30px;
    opacity: 0.7;
}

body.theme-dark .partners-label {
    color: var(--text-dark-muted);
}

.partners-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px 80px;
}

.partner-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light-main);
    opacity: 0.45;
    transition: var(--transition-fast);
}

body.theme-dark .partner-logo {
    color: var(--text-dark-main);
}

.partner-logo:hover {
    opacity: 0.95;
    transform: translateY(-2px);
}

.partner-logo .logo-svg,
.partner-logo .logo-img,
.partner-logo img {
    width: auto;
    height: 24px;
    max-height: 24px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: var(--transition-fast);
    border-radius: 4px;
    mix-blend-mode: multiply;
}

.partner-logo:hover .logo-svg,
.partner-logo:hover .logo-img,
.partner-logo:hover img {
    filter: grayscale(0%);
}

.partner-logo .partner-name {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    font-family: var(--font-heading);
}

/* ==========================================================================
   Three Pillars Section (UnBound X & Infosion Inspired Grid)
   ========================================================================== */
.pillars-section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    margin-bottom: 70px;
}

.section-badge {
    color: var(--accent-blue);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    display: inline-block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.8rem;
    color: var(--text-light-main);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Pillars Cards Grid */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.pillar-card {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--border-light);
    border-radius: 28px;
    padding: 40px 32px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.pillar-icon-box {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 28px;
    transition: var(--transition-smooth);
}

/* Icon Variations */
.pillar-icon-box.blue {
    background-color: rgba(37, 99, 235, 0.08);
    color: var(--accent-blue);
}

.pillar-icon-box.purple {
    background-color: rgba(124, 58, 237, 0.08);
    color: var(--accent-purple);
}

.pillar-icon-box.cyan {
    background-color: rgba(6, 182, 212, 0.08);
    color: var(--accent-cyan);
}

.pillar-card-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-light-main);
}

.pillar-card-text {
    font-size: 0.95rem;
    color: var(--text-light-muted);
    margin-bottom: 24px;
}

.pillar-features {
    list-style: none;
    margin-bottom: 32px;
}

.pillar-features li {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-light-main);
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.pillar-features li::before {
    content: '✔';
    color: var(--accent-blue);
    font-weight: bold;
    margin-right: 8px;
}

.pillar-link {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light-main);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.pillar-link .arrow {
    transition: var(--transition-fast);
}

.pillar-link:hover {
    color: var(--accent-blue);
}

.pillar-link:hover .arrow {
    transform: translateX(4px);
}

/* Pillar Card Hover Ambient Glow (Infosion Inspired) */
.pillar-card:hover {
    transform: translateY(-6px);
    background-color: white;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.05);
}

.pillar-card.hover-glow-blue:hover {
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 20px 45px rgba(37, 99, 235, 0.06);
}

.pillar-card.hover-glow-purple:hover {
    border-color: rgba(124, 58, 237, 0.25);
    box-shadow: 0 20px 45px rgba(124, 58, 237, 0.06);
}

.pillar-card.hover-glow-cyan:hover {
    border-color: rgba(6, 182, 212, 0.25);
    box-shadow: 0 20px 45px rgba(6, 182, 212, 0.06);
}

.pillar-card:hover .pillar-icon-box {
    transform: scale(1.1);
}

@media (max-width: 992px) {
    .pillars-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Scroll-Shifting Core (Dark Mode container with JS IntersectionObserver)
   ========================================================================== */
.dark-core-container {
    background-color: var(--bg-dark-core);
    border-top: 1px solid var(--border-dark);
    transition: background-color 0.8s ease;
    position: relative;
    z-index: 10;
}

.dark-core-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(to bottom, var(--bg-light) 0%, var(--bg-dark-core) 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.8s ease;
}

/* When Body has .theme-dark, reveal the background blends */
body.theme-dark .dark-core-container::before {
    opacity: 0.05;
}

/* Solutions Showcase Section */
.solutions-section {
    padding: 120px 0;
}

.badge-blue {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
}

/* Showcase List */
.filter-tabs-container {
    display: flex;
    justify-content: center;
    width: 100%;
}

.filter-tabs {
    display: flex;
    gap: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 6px;
    border-radius: 40px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.filter-tab {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-dark-muted);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-tab:hover {
    color: var(--text-dark-main);
}

.filter-tab.active {
    background: var(--accent-blue); /* Brand Red */
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-blue-glow);
}

/* Solutions Grid */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 40px;
    transition: var(--transition-smooth);
}

@media (max-width: 992px) {
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

.portfolio-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 28px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.portfolio-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(229, 7, 18, 0.25); /* Subtle Brand Red Border */
    box-shadow: 0 20px 40px rgba(229, 7, 18, 0.08), inset 0 0 20px rgba(255, 255, 255, 0.02);
}

/* Animation states for portfolio filter */
.portfolio-card.fade-out {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
    pointer-events: none;
    position: absolute;
    width: 0;
    height: 0;
    padding: 0;
    margin: 0;
    border: none;
    overflow: hidden;
}

.portfolio-card.fade-in {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
    position: relative;
    width: auto;
    height: auto;
}

.solutions-showcase {
    display: flex;
    flex-direction: column;
    gap: 100px;
    margin-top: 60px;
}

.showcase-item {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 80px;
    align-items: center;
}

.showcase-item.reverse {
    direction: rtl;
}

.showcase-item.reverse .showcase-content {
    direction: ltr;
}

.showcase-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.tag {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 6px 14px;
    border-radius: 30px;
    margin-bottom: 20px;
}

.tag-blue {
    background-color: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
}

.tag-purple {
    background-color: rgba(124, 58, 237, 0.1);
    color: var(--accent-purple);
}

.showcase-title {
    font-size: 2.2rem;
    color: var(--text-dark-main);
    margin-bottom: 20px;
}

.showcase-text {
    font-size: 1.05rem;
    color: var(--text-dark-muted);
    margin-bottom: 32px;
}

.showcase-metrics {
    display: flex;
    gap: 40px;
    margin-bottom: 36px;
}

.metric {
    display: flex;
    flex-direction: column;
}

.metric .value {
    font-size: 1.8rem;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-dark-main);
}

.metric .label {
    font-size: 0.8rem;
    color: var(--text-dark-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

.btn-text {
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark-main);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.btn-text:hover {
    color: var(--accent-cyan);
}

.btn-text:hover .arrow {
    transform: translateX(6px);
}

/* Showcase Visual Pebble Enclosure (ustwo Inspired Mask) */
.showcase-visual {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}

/* Pebble Enclosure Profile 1 */
.pebble-mask {
    width: 100%;
    max-width: 440px;
    height: 340px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 60% 40% 70% 30% / 50% 30% 70% 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

/* Pebble Enclosure Profile 2 */
.pebble-mask.shape-2 {
    border-radius: 40% 60% 30% 70% / 40% 60% 40% 60%;
}

.showcase-visual:hover .pebble-mask {
    border-radius: 50% 50% 50% 50% / 50% 50% 50% 50%;
}

/* Visual Mockup inside mask */
.mockup-ui {
    width: 80%;
    height: 75%;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.mockup-ui.dark-theme {
    background: rgba(0, 0, 0, 0.6);
}

.mockup-header {
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mockup-header .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.mockup-header .address {
    font-size: 0.7rem;
    font-family: monospace;
    color: rgba(255, 255, 255, 0.4);
    margin-left: 8px;
}

.mockup-body {
    flex-grow: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

/* Dynamic visual chart elements inside mockup */
.ai-chat-bubble {
    background: rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    padding: 8px 12px;
    border-radius: 12px;
    color: var(--text-dark-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-chat-bubble .pulse {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan);
    display: inline-block;
    animation: pulseGlow 1.5s infinite alternate;
}

@keyframes pulseGlow {
    from { opacity: 0.3; }
    to { opacity: 1; }
}

.ai-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 50px;
    padding: 0 10px;
}

.ai-chart .bar {
    flex-grow: 1;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.ai-chart .bar-1 { height: 30%; background-color: var(--accent-blue); }
.ai-chart .bar-2 { height: 75%; background-color: var(--accent-purple); }
.ai-chart .bar-3 { height: 50%; background-color: var(--accent-cyan); }
.ai-chart .bar-4 { height: 90%; background-color: var(--text-dark-main); }

.ai-stat {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent-cyan);
    text-transform: uppercase;
    text-align: center;
}

/* Terminal Stream mockup */
.terminal-stream {
    font-family: monospace;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.terminal-stream .green { color: #10b981; }
.terminal-stream .yellow { color: #fbbf24; }
.terminal-stream .t-cyan { color: var(--accent-cyan); }

/* Decorative Ambient Glows */
.visual-glow {
    position: absolute;
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    z-index: -1;
    filter: blur(80px);
    opacity: 0.4;
}

.blur-blue { background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%); }
.blur-purple { background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%); }

@media (max-width: 992px) {
    .showcase-item,
    .showcase-item.reverse {
        grid-template-columns: 1fr;
        gap: 40px;
        direction: ltr !important;
    }
    
    .showcase-visual {
        order: -1;
    }
}

/* ==========================================================================
   Technology Academy Section (ustwo Inspired Editorial UI)
   ========================================================================== */
.academy-section {
    padding: 120px 0;
    border-top: 1px solid var(--border-dark);
}

.badge-purple {
    color: var(--accent-purple);
    background: rgba(124, 58, 237, 0.08);
}

/* Filter Tags (Linear Inspired) */
.filter-tabs-container {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.filter-tabs {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 40px;
    padding: 6px;
    backdrop-filter: blur(10px);
}

.filter-tab {
    background: transparent;
    border: none;
    color: var(--text-dark-muted);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-tab.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-dark-main);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.filter-tab:hover {
    color: var(--text-dark-main);
}

/* Courses Card Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.course-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 24px;
    padding: 36px 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
    min-height: 380px;
}

.course-badge {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-dark-main);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 12px;
    border-radius: 30px;
    margin-bottom: 24px;
}

.course-title {
    font-size: 1.35rem;
    color: var(--text-dark-main);
    margin-bottom: 16px;
    line-height: 1.25;
}

.course-desc {
    font-size: 0.95rem;
    color: var(--text-dark-muted);
    margin-bottom: 28px;
    flex-grow: 1;
}

.course-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    margin-bottom: 28px;
}

.course-details .detail {
    font-size: 0.85rem;
    color: var(--text-dark-muted);
}

.course-details .detail strong {
    color: var(--text-dark-main);
}

.btn-course-enroll {
    text-decoration: none;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-dark-main);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    padding: 12px;
    border-radius: 12px;
    transition: var(--transition-fast);
}

.course-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(124, 58, 237, 0.3);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.course-card:hover .btn-course-enroll {
    background-color: var(--accent-purple);
    border-color: var(--accent-purple);
    color: white;
}

@media (max-width: 992px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .course-card {
        min-height: auto;
    }
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-section {
    padding: 120px 0;
    background: var(--bg-light);
    position: relative;
    z-index: 10;
    transition: var(--transition-smooth);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.contact-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 36px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.info-item .icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: rgba(37, 99, 235, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--accent-blue);
}

.info-item .text {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light-main);
}

/* Contact Card Form */
.contact-form-card {
    background-color: white;
    border: 1px solid var(--border-light);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
    border-radius: 28px;
    padding: 40px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    background-color: var(--bg-light);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 12px 16px;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    color: var(--text-light-main);
    transition: var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-submit {
    width: 100%;
    background-color: var(--accent-blue);
    color: white;
    border: none;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 6px 15px var(--accent-blue-glow);
    transition: var(--transition-smooth);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-container {
    background-color: var(--bg-dark-core);
    border-top: 1px solid var(--border-dark);
    padding: 80px 0 40px 0;
    color: var(--text-dark-main);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 50px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 320px;
    font-size: 1.15rem;
    font-weight: 700;
}

.footer-brand .brand-desc {
    font-size: 0.85rem;
    color: var(--text-dark-muted);
    font-weight: 400;
    margin-top: 16px;
    line-height: 1.7;
}

.footer-links-grid {
    display: flex;
    gap: 80px;
}

.links-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dark-muted);
    margin-bottom: 20px;
}

.links-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.links-column ul a {
    text-decoration: none;
    font-size: 0.9rem;
    color: var(--text-dark-muted);
    transition: var(--transition-fast);
}

.links-column ul a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-dark-muted);
}