/* ==========================================================================
   SELECT IMMERSIVE EXPERIENCES LLC - Website Styles
   Brand Colors: Navy (#0A1628), Blue (#3B82F6), Gold (#F59E0B)
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Variables)
   -------------------------------------------------------------------------- */
:root {
    /* Brand Colors */
    --color-primary: #0A1628;
    --color-primary-light: #0F1F35;
    --color-primary-dark: #050B14;
    --color-accent: #3B82F6;
    --color-accent-light: #60A5FA;
    --color-accent-dark: #2563EB;
    --color-secondary: #F59E0B;
    --color-secondary-light: #FBBF24;
    --color-secondary-dark: #D97706;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F8FAFC;
    --color-gray-100: #F1F5F9;
    --color-gray-200: #E2E8F0;
    --color-gray-300: #CBD5E1;
    --color-gray-400: #94A3B8;
    --color-gray-500: #64748B;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1E293B;
    --color-gray-900: #0F172A;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

.text-muted {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-lg) 0;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-select {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: 0.1em;
}

.logo-immersive {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-secondary);
    letter-spacing: 0.2em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--color-accent);
    color: var(--color-white) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

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

.nav-cta:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    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);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 60% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 40%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%233B82F6' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-4xl) var(--container-padding);
    max-width: 900px;
}

.hero-tagline {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-7xl));
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: var(--spacing-xl);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-trust {
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.hero-trust p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    letter-spacing: 0.05em;
    line-height: 1.6;
    word-spacing: 0.1em;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.hero-scroll span {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-gray-600);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* --------------------------------------------------------------------------
   Page Hero (Inner Pages)
   -------------------------------------------------------------------------- */
.page-hero {
    background: var(--color-primary);
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(245, 158, 11, 0.08) 0%, transparent 40%);
}

.page-hero-compact {
    padding: 140px 0 60px;
}

.page-hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.page-hero-title {
    font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-6xl));
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.page-hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section {
    padding: var(--spacing-4xl) 0;
}

.section-alt {
    background: var(--color-gray-50);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tagline {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

/* --------------------------------------------------------------------------
   Services Grid (Home)
   -------------------------------------------------------------------------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-white);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.service-link {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

.service-link:hover {
    color: var(--color-accent-dark);
}

/* --------------------------------------------------------------------------
   Differentiators Section
   -------------------------------------------------------------------------- */
.diff-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.diff-content h2 {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.diff-content p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.diff-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(245, 158, 11, 0.1));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

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

.stat-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   Portfolio Preview (Home)
   -------------------------------------------------------------------------- */
.portfolio-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: var(--spacing-lg);
}

.portfolio-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--color-primary);
    min-height: 280px;
}

.portfolio-card.featured {
    grid-row: span 2;
}

.portfolio-image {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 22, 40, 0.95) 0%, rgba(10, 22, 40, 0.3) 100%);
}

.portfolio-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-xl);
}

.portfolio-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.portfolio-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.portfolio-content p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-md);
}

.portfolio-stats {
    display: flex;
    gap: var(--spacing-md);
}

.portfolio-stats span {
    font-size: var(--font-size-xs);
    color: var(--color-gray-300);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
    background: var(--color-primary);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Service Details (Services Page)
   -------------------------------------------------------------------------- */
.service-detail {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-4xl);
    align-items: start;
}

.service-detail.reverse {
    grid-template-columns: 400px 1fr;
}

.service-detail.reverse .service-detail-content {
    order: 2;
}

.service-detail.reverse .service-detail-visual {
    order: 1;
}

.service-detail-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.service-detail-icon svg {
    width: 36px;
    height: 36px;
    color: var(--color-white);
}

.service-detail-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-detail-intro {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.feature h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

.service-includes h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-includes ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.service-includes li {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    padding-left: var(--spacing-lg);
    position: relative;
}

.service-includes li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.service-detail-visual {
    position: sticky;
    top: 120px;
}

.visual-card {
    background: var(--color-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
}

.visual-number {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-lg);
    opacity: 0.8;
}

.visual-card p {
    font-size: var(--font-size-base);
    color: var(--color-gray-300);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Case Studies (Portfolio Page)
   -------------------------------------------------------------------------- */
.case-studies {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4xl);
}

.case-study {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-100);
}

.case-study-header {
    background: var(--color-primary);
    padding: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.case-study-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 80% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
}

.case-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.case-study-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.case-client {
    font-size: var(--font-size-base);
    color: var(--color-gray-400);
    position: relative;
}

.case-study-content {
    padding: var(--spacing-2xl);
}

.case-overview {
    margin-bottom: var(--spacing-2xl);
}

.case-overview h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.case-overview p {
    color: var(--color-gray-600);
    line-height: 1.7;
}

.case-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
}

.case-stat {
    text-align: center;
    flex: 1;
}

.stat-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.case-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
}

.case-detail-block h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.case-detail-block ul {
    list-style: none;
}

.case-detail-block li {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    border-bottom: 1px solid var(--color-gray-100);
}

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

.case-detail-block li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* Testimonial */
.testimonial-block {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
}

.testimonial-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-secondary);
    opacity: 0.5;
}

.testimonial-icon svg {
    width: 100%;
    height: 100%;
}

.testimonial-block blockquote {
    font-size: var(--font-size-xl);
    color: var(--color-gray-700);
    line-height: 1.7;
    font-style: italic;
    margin-bottom: var(--spacing-xl);
}

.testimonial-block cite {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    font-style: normal;
}

/* --------------------------------------------------------------------------
   About Page
   -------------------------------------------------------------------------- */
.story-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-4xl);
    align-items: center;
}

.story-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
}

.story-content p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.story-card {
    background: var(--color-primary);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-xl);
    text-align: center;
}

.story-year {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.story-card p {
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-sm);
}

.story-legal {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500) !important;
}

/* Methodology */
.methodology-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.methodology-phase {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
}

.phase-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.3;
    margin-bottom: var(--spacing-md);
}

.methodology-phase h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.methodology-phase > p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.methodology-phase ul {
    list-style: none;
}

.methodology-phase li {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.methodology-phase li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* Why SIE */
.why-sie-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-4xl);
    align-items: center;
}

.why-sie-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.why-sie-content > p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.why-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.why-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.why-feature svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.why-feature span {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.experience-card {
    background: var(--color-primary);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-xl);
    text-align: center;
}

.experience-number {
    font-size: var(--font-size-7xl);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-lg);
}

.experience-card p {
    color: var(--color-gray-300);
    line-height: 1.6;
}

/* Leadership */
.leadership-grid {
    max-width: 800px;
    margin: 0 auto;
}

.leader-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-2xl);
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-100);
}

.leader-image {
    display: flex;
    align-items: flex-start;
}

.leader-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.leader-placeholder span {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--color-accent);
}

.leader-photo {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    border: 3px solid var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.leader-info h3 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.leader-title {
    font-size: var(--font-size-base);
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.leader-bio {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.leader-expertise {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.leader-expertise span {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
}

/* Values */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.value-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.value-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(245, 158, 11, 0.1));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.value-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.value-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.value-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Contact Page
   -------------------------------------------------------------------------- */
.contact-section {
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-4xl);
}

.contact-form {
    background: var(--color-white);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    color: var(--color-gray-800);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 44px;
}

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

.form-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    text-align: center;
    margin-top: var(--spacing-md);
}

.form-success {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.form-success h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.form-success p {
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-info-card {
    background: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

.contact-info-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.contact-info-card > p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.contact-detail {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-detail:last-child {
    margin-bottom: 0;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.contact-detail h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-detail p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.next-steps {
    list-style: none;
    counter-reset: steps;
}

.next-steps li {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.next-steps li:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 700;
    flex-shrink: 0;
}

.next-steps strong {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.next-steps p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-primary);
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-logo {
    display: inline-flex;
    flex-direction: column;
    margin-bottom: var(--spacing-lg);
}

.footer-brand p {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    max-width: 300px;
}

.footer-location {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.05em;
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.footer-legal {
    font-size: var(--font-size-xs) !important;
}

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .diff-grid,
    .story-grid,
    .why-sie-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .diff-stats {
        grid-template-columns: repeat(4, 1fr);
    }

    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .service-detail,
    .service-detail.reverse {
        grid-template-columns: 1fr;
    }

    .service-detail-visual {
        position: static;
        order: -1;
    }

    .service-detail.reverse .service-detail-content,
    .service-detail.reverse .service-detail-visual {
        order: unset;
    }

    .service-detail.reverse .service-detail-visual {
        order: -1;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
}

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

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--color-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
        transition: right var(--transition-base);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: var(--font-size-xl);
    }

    .portfolio-preview {
        grid-template-columns: 1fr;
    }

    .portfolio-card.featured {
        grid-row: auto;
    }

    .diff-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

    .service-includes ul {
        grid-template-columns: 1fr;
    }

    .case-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .case-details {
        grid-template-columns: 1fr;
    }

    .leader-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .leader-placeholder {
        margin: 0 auto;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        max-width: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .hero-scroll {
        display: none;
    }
}

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .stat-card {
        padding: var(--spacing-md);
    }

    .case-stat {
        padding: var(--spacing-md) 0;
    }
}

/* ==========================================================================
   Premium Animations & Effects
   ========================================================================== */

/* Fade in animations for sections */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Hero animations */
.hero-tagline {
    animation: fadeInUp 0.8s ease both;
    animation-delay: 0.2s;
}

.hero-title {
    animation: fadeInUp 0.8s ease both;
    animation-delay: 0.4s;
}

.hero-description {
    animation: fadeInUp 0.8s ease both;
    animation-delay: 0.6s;
}

.hero-buttons {
    animation: fadeInUp 0.8s ease both;
    animation-delay: 0.8s;
}

.hero-trust {
    animation: fadeIn 1s ease both;
    animation-delay: 1s;
}

/* Page hero animations */
.page-hero-content .hero-tagline {
    animation-delay: 0.1s;
}

.page-hero-title {
    animation: fadeInUp 0.8s ease both;
    animation-delay: 0.3s;
}

.page-hero-description {
    animation: fadeInUp 0.8s ease both;
    animation-delay: 0.5s;
}

/* Intersection Observer animation classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Smooth hover transitions for cards */
.service-card,
.stat-card,
.portfolio-card,
.case-study,
.value-card,
.methodology-phase {
    transition: all var(--transition-base);
}

/* Gradient text shimmer effect */
.text-gradient {
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    50% { background-position: 100% center; }
    100% { background-position: 0% center; }
}

/* Button hover pulse effect */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300%;
    height: 300%;
}

/* Nav link hover effect enhancement */
.nav-link {
    position: relative;
    overflow: hidden;
}

/* Smooth image loading */
img {
    transition: opacity 0.3s ease;
}

img[loading="lazy"] {
    opacity: 0;
}

img.loaded {
    opacity: 1;
}

/* Focus states for accessibility */
.btn:focus-visible,
.nav-link:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

    html {
        scroll-behavior: auto;
    }
}

/* Print styles */
@media print {
    .nav,
    .hero-scroll,
    .cta-section,
    .nav-toggle {
        display: none !important;
    }

    .hero,
    .page-hero {
        min-height: auto;
        padding: 2rem 0;
    }

    body {
        font-size: 12pt;
        color: #000;
    }

    a {
        text-decoration: underline;
    }
}