/* CSS Design System and Stylesheet for NovaSphere Digital */

/* 1. DESIGN TOKENS & VARIABLES */
:root {
    /* Color Palette */
    --color-background: #faf8ff;
    --color-surface: #faf8ff;
    --color-surface-dim: #d2d9f4;
    --color-surface-bright: #faf8ff;
    --color-surface-container-lowest: #ffffff;
    --color-surface-container-low: #f2f3ff;
    --color-surface-container: #eaedff;
    --color-surface-container-high: #e2e7ff;
    --color-surface-container-highest: #dae2fd;
    
    --color-on-surface: #131b2e;
    --color-on-surface-variant: #464555;
    --color-inverse-surface: #283044;
    --color-inverse-on-surface: #eef0ff;
    --color-outline: #777587;
    --color-outline-variant: #c7c4d8;
    
    --color-primary: #3525cd;
    --color-on-primary: #ffffff;
    --color-primary-container: #4f46e5;
    --color-on-primary-container: #dad7ff;
    --color-inverse-primary: #c3c0ff;
    --color-surface-tint: #4d44e3;

    --color-secondary: #712ae2;
    --color-on-secondary: #ffffff;
    --color-secondary-container: #8a4cfc;
    --color-on-secondary-container: #fffbff;

    --color-tertiary: #7e3000;
    --color-on-tertiary: #ffffff;
    --color-tertiary-container: #a44100;
    --color-on-tertiary-container: #ffd2be;

    --color-error: #ba1a1a;
    --color-on-error: #ffffff;
    --color-error-container: #ffdad6;
    --color-on-error-container: #93000a;

    /* Fixed Colors */
    --color-primary-fixed: #e2dfff;
    --color-primary-fixed-dim: #c3c0ff;
    --color-on-primary-fixed: #0f0069;
    --color-on-primary-fixed-variant: #3323cc;
    --color-secondary-fixed: #eaddff;
    --color-secondary-fixed-dim: #d2bbff;
    --color-on-secondary-fixed: #25005a;
    --color-on-secondary-fixed-variant: #5a00c6;
    --color-tertiary-fixed: #ffdbcc;
    --color-tertiary-fixed-dim: #ffb695;
    --color-on-tertiary-fixed: #351000;
    --color-on-tertiary-fixed-variant: #7b2f00;

    /* Custom Gradients */
    --gradient-primary: linear-gradient(135deg, #3525cd 0%, #712ae2 100%);
    --gradient-primary-hover: linear-gradient(135deg, #2b1eb3 0%, #5d20c2 100%);
    --gradient-glow-color: rgba(53, 37, 205, 0.35);

    /* Spacing Rhythm */
    --spacing-base: 8px;
    --spacing-stack-xs: 4px;
    --spacing-stack-sm: 12px;
    --spacing-stack-md: 24px;
    --spacing-stack-lg: 48px;
    --spacing-stack-xl: 80px;

    /* Container Spacers */
    --container-max-width: 1280px;
    --margin-desktop: 64px;
    --margin-tablet: 32px;
    --margin-mobile: 24px;
    --gutter-desktop: 24px;
    --gutter-tablet: 20px;
    --gutter-mobile: 16px;

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

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(19, 27, 46, 0.04);
    --shadow-md: 0 10px 30px -10px rgba(53, 37, 205, 0.12);
    --shadow-lg: 0 20px 50px -12px rgba(53, 37, 205, 0.15);
    --shadow-high-elevation: 0 25px 60px -15px rgba(53, 37, 205, 0.18);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. BASE RESET & GENERAL LAYOUT */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    height: 100%;
}

body {
    background-color: var(--color-background);
    color: var(--color-on-surface);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 24px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

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

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

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

/* Grid & Flex Utilities */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--margin-desktop);
    padding-right: var(--margin-desktop);
}

.section-padding {
    padding-top: var(--spacing-stack-xl);
    padding-bottom: var(--spacing-stack-xl);
}

/* 3. TYPOGRAPHY CLASSES & UTILITIES */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Sora', sans-serif;
    font-weight: 600;
    color: var(--color-on-surface);
}

.display-lg {
    font-size: 72px;
    font-weight: 700;
    line-height: 80px;
    letter-spacing: -0.02em;
}

.headline-lg {
    font-size: 48px;
    font-weight: 600;
    line-height: 56px;
    letter-spacing: -0.01em;
}

.headline-md {
    font-size: 24px;
    font-weight: 600;
    line-height: 32px;
}

.body-lg {
    font-size: 18px;
    font-weight: 400;
    line-height: 28px;
}

.body-md {
    font-size: 16px;
    font-weight: 400;
    line-height: 24px;
}

.font-label-sm {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    line-height: 20px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.text-muted {
    color: var(--color-on-surface-variant);
}

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

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

.max-width-md {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 4. BUTTONS & BADGES */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.btn-icon {
    gap: 8px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 13px;
}

.btn-md {
    padding: 12px 24px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 15px;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-on-primary);
    box-shadow: 0 4px 12px rgba(53, 37, 205, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--gradient-glow-color);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--color-surface-container-lowest);
    color: var(--color-primary);
    border: 1px solid var(--color-outline-variant);
}

.btn-secondary:hover {
    background-color: var(--color-surface-container-low);
    border-color: var(--color-primary);
    color: var(--color-primary-container);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-badge {
    background-color: rgba(53, 37, 205, 0.08);
    color: var(--color-primary);
    margin-bottom: var(--spacing-stack-md);
}

.badge-accent {
    background-color: rgba(113, 42, 226, 0.08);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-stack-sm);
}

.badge-overlay {
    background: rgba(19, 27, 46, 0.75);
    color: var(--color-background);
    backdrop-filter: blur(4px);
    font-size: 11px;
}

.icon-badge {
    font-size: 16px;
}

/* 5. GLASSMORPHISM CORE CARD */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

/* 6. HEADER & RESPONSIVE NAVIGATION */
.header-sticky {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: transparent;
    transition: background-color var(--transition-normal), border-bottom var(--transition-normal), box-shadow var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.header-sticky.scrolled {
    background-color: rgba(250, 248, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(210, 217, 244, 0.4);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 16px var(--margin-desktop);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: 'Sora', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    display: inline-block;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

.desktop-nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-on-surface-variant);
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    color: var(--color-primary);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.mobile-menu-btn:hover {
    background-color: var(--color-surface-container);
}

/* Mobile Nav Overlay */
.mobile-overlay {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: rgba(250, 248, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 99;
    display: flex;
    justify-content: center;
    align-items: center;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    border-bottom: 1px solid var(--color-outline-variant);
}

.mobile-overlay.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    width: 100%;
    padding: 40px var(--margin-mobile);
}

.mobile-nav-link {
    font-family: 'Sora', sans-serif;
    font-size: 28px;
    font-weight: 600;
    color: var(--color-on-surface-variant);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-primary);
    transform: scale(1.05);
}

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

.mobile-cta {
    margin-top: 16px;
    width: 80%;
    max-width: 300px;
}

/* 7. HERO SECTION */
.hero-section {
    position: relative;
    padding-top: calc(var(--spacing-stack-xl) + 80px);
    padding-bottom: var(--spacing-stack-xl);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background-gradient {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: radial-gradient(circle at 80% 20%, rgba(53, 37, 205, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(113, 42, 226, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--gutter-desktop);
    align-items: center;
    position: relative;
    z-index: 1;
    width: 100%;
}

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

.hero-content p {
    margin-top: var(--spacing-stack-sm);
    margin-bottom: var(--spacing-stack-md);
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    width: 100%;
}

.hero-graphic {
    perspective: 1200px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.mockup-perspective-wrapper {
    width: 100%;
    transform-style: preserve-3d;
    transition: transform var(--transition-slow);
}

.mockup-perspective-wrapper:hover {
    transform: rotateY(-8deg) rotateX(6deg);
}

.mockup-card {
    position: relative;
    padding: 16px;
    background: rgba(255, 255, 255, 0.65);
    border-radius: var(--radius-xl);
    width: 100%;
    transform: translateZ(0);
}

.mockup-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: 0 15px 40px rgba(19, 27, 46, 0.08);
}

/* Floating Stats Card */
.floating-stats-card {
    position: absolute;
    left: -32px;
    top: 25%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: translateZ(40px);
}

.stats-icon-wrapper {
    width: 44px;
    height: 44px;
    background-color: var(--color-primary-fixed);
    border-radius: var(--radius-default);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.stats-icon {
    font-size: 24px;
}

.stats-text-block {
    display: flex;
    flex-direction: column;
}

.stats-label {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-on-surface-variant);
}

.stats-value {
    font-family: 'Sora', sans-serif;
    font-size: 22px;
    font-weight: 700;
    line-height: 28px;
    color: var(--color-on-surface);
}

/* Float Animation */
@keyframes float {
    0% { transform: translateY(0px) translateZ(40px); }
    50% { transform: translateY(-10px) translateZ(40px); }
    100% { transform: translateY(0px) translateZ(40px); }
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

/* 8. SERVICES SECTION */
.section-header {
    margin-bottom: var(--spacing-stack-lg);
}

.section-header h2 {
    margin-top: 4px;
    margin-bottom: var(--spacing-stack-xs);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gutter-desktop);
}

.service-card {
    padding: 32px 24px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(210, 217, 244, 0.4);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(53, 37, 205, 0.2);
}

.service-icon-container {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: transform var(--transition-normal);
}

.service-card:hover .service-icon-container {
    transform: scale(1.1);
}

.service-icon {
    font-size: 28px;
}

.bg-primary-fixed {
    background-color: var(--color-primary-fixed);
}
.bg-secondary-fixed {
    background-color: var(--color-secondary-fixed);
}
.bg-tertiary-fixed {
    background-color: var(--color-tertiary-fixed);
}
.bg-primary-container-low {
    background-color: rgba(79, 70, 229, 0.1);
}

.service-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    flex-grow: 1;
    margin-bottom: 24px;
    color: var(--color-on-surface-variant);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: gap var(--transition-fast);
}

.service-link span:first-child {
    border-bottom: 1px solid transparent;
}

.service-card:hover .service-link {
    gap: 8px;
}

.service-card:hover .service-link span:first-child {
    border-bottom-color: var(--color-primary);
}

.service-link .material-symbols-outlined {
    font-size: 16px;
}

/* 9. ABOUT & STATISTICS SECTION */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-stack-xl);
    align-items: center;
}

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

.about-content h2 {
    margin-top: 4px;
    margin-bottom: 16px;
}

.about-content p {
    margin-bottom: 20px;
    max-width: 540px;
}

.stats-row {
    display: flex;
    gap: 32px;
    margin-top: 24px;
    border-top: 1px solid var(--color-outline-variant);
    padding-top: 24px;
    width: 100%;
}

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

.stat-number {
    font-family: 'Sora', sans-serif;
    font-size: 36px;
    font-weight: 700;
    line-height: 44px;
    color: var(--color-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-desc {
    font-size: 11px;
    color: var(--color-on-surface-variant);
    margin-top: 4px;
}

.about-graphic {
    position: relative;
    width: 100%;
}

.image-collage-wrapper {
    position: relative;
    width: 100%;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.collage-card {
    padding: 32px;
    position: relative;
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 440px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.6);
    overflow: hidden;
}

.collage-card-main {
    box-shadow: var(--shadow-lg);
}

.card-glow-effect {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(113, 42, 226, 0.08) 0%, transparent 70%);
    top: -50px;
    right: -50px;
    pointer-events: none;
}

.info-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary-fixed);
    color: var(--color-primary);
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.collage-card p {
    margin-bottom: 24px;
}

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

.benefit-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    font-weight: 500;
}

.list-check {
    color: var(--color-primary);
    font-size: 20px;
}

/* 10. PORTFOLIO SECTION */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gutter-desktop);
}

.portfolio-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: var(--color-surface-container);
}

.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;
    inset: 0;
    background: linear-gradient(to top, rgba(19, 27, 46, 0.4), transparent);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.portfolio-details {
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.portfolio-tag {
    color: var(--color-primary);
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.portfolio-title {
    font-size: 22px;
    margin-bottom: 12px;
}

.portfolio-details p {
    color: var(--color-on-surface-variant);
    margin-bottom: 24px;
    flex-grow: 1;
}

.portfolio-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: gap var(--transition-fast);
}

.portfolio-card:hover .portfolio-btn {
    gap: 8px;
}

/* 11. TESTIMONIALS SECTION */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gutter-desktop);
}

.testimonial-card {
    padding: 36px 30px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(210, 217, 244, 0.4);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(53, 37, 205, 0.15);
}

.star-rating {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
}

.star-icon {
    color: #f59e0b;
    font-size: 18px;
    font-variation-settings: 'FILL' 1;
}

.testimonial-quote {
    font-style: italic;
    color: var(--color-on-surface-variant);
    line-height: 26px;
    margin-bottom: 24px;
    flex-grow: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Sora', sans-serif;
    font-weight: 700;
    font-size: 15px;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-on-surface);
    text-transform: none;
    letter-spacing: 0;
}

.author-title {
    font-size: 12px;
    text-transform: none;
    letter-spacing: 0;
    margin-top: 2px;
}

/* 12. CONTACT SECTION & FORMS */
.contact-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: var(--spacing-stack-xl);
    align-items: center;
}

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

.contact-info h2 {
    margin-top: 4px;
    margin-bottom: 16px;
}

.contact-info p {
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.detail-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-text {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 11px;
    color: var(--color-on-surface-variant);
}

.detail-link {
    font-size: 18px;
    color: var(--color-on-surface);
    margin-top: 2px;
    transition: color var(--transition-fast);
}

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

/* Form Styling */
.form-card {
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-lg);
}

.form-title {
    margin-bottom: 28px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    position: relative;
}

.form-label {
    font-size: 12px;
    color: var(--color-on-surface-variant);
    margin-bottom: 8px;
    text-transform: none;
    letter-spacing: 0.02em;
}

.input-wrapper {
    position: relative;
    width: 100%;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--color-surface-container-lowest);
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-default);
    color: var(--color-on-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input {
    padding-left: 44px;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-outline);
    font-size: 20px;
    pointer-events: none;
    transition: color var(--transition-fast);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-input:focus, .form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(53, 37, 205, 0.08);
    background-color: var(--color-surface-container-lowest);
}

.form-input:focus ~ .input-icon {
    color: var(--color-primary);
}

/* Validation error styles */
.form-group.invalid .form-input, 
.form-group.invalid .form-textarea {
    border-color: var(--color-error);
}

.form-group.invalid .form-input:focus, 
.form-group.invalid .form-textarea:focus {
    box-shadow: 0 0 0 4px var(--color-error-container);
}

.error-message {
    font-size: 12px;
    color: var(--color-error);
    margin-top: 6px;
    display: none;
}

.form-group.invalid .error-message {
    display: block;
}

/* 13. FOOTER SECTION */
.footer-section {
    border-top: 1px solid rgba(210, 217, 244, 0.4);
    padding-top: var(--spacing-stack-xl);
    padding-bottom: 24px;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: var(--spacing-stack-lg);
    padding-bottom: var(--spacing-stack-lg);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo {
    font-family: 'Sora', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.footer-brand p {
    max-width: 320px;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-links-col {
    display: flex;
    flex-direction: column;
}

.footer-col-title {
    font-size: 11px;
    color: var(--color-on-surface);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

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

.footer-link {
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    color: var(--color-on-surface-variant);
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: inline-block;
}

.footer-link:hover {
    color: var(--color-secondary);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid var(--color-surface-container-high);
    padding-top: 24px;
    display: flex;
    justify-content: center;
}

/* 14. TOAST NOTIFICATION */
.toast {
    position: fixed;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-inverse-surface);
    color: var(--color-inverse-on-surface);
    padding: 14px 24px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-high-elevation);
    z-index: 1000;
    transition: bottom 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

.toast.show {
    bottom: 32px;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast-icon {
    color: #4ade80;
    font-size: 20px;
}

.toast-text {
    text-transform: none;
    letter-spacing: 0;
}

/* 15. INTERSECTION OBSERVER REVEAL ANIMATIONS */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-on-scroll.reveal-active {
    opacity: 1;
    transform: translateY(0);
}

/* 16. RESPONSIVE MEDIA QUERIES */

/* Tablet Viewports (768px - 1024px) */
@media (max-width: 1024px) {
    :root {
        --margin-desktop: 32px;
    }
    
    .container {
        padding-left: var(--margin-tablet);
        padding-right: var(--margin-tablet);
    }
    
    .display-lg {
        font-size: 52px;
        line-height: 60px;
    }
    
    .headline-lg {
        font-size: 40px;
        line-height: 48px;
    }
    
    /* Hero */
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-stack-lg);
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .floating-stats-card {
        left: 0;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gutter-tablet);
    }
    
    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-stack-lg);
    }
    
    .about-content {
        align-items: center;
        text-align: center;
    }
    
    .about-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .stats-row {
        justify-content: center;
    }
    
    .image-collage-wrapper {
        height: auto;
    }
    
    .collage-card {
        margin-left: auto;
        margin-right: auto;
    }
    
    /* Portfolio */
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-stack-md);
        max-width: 680px;
        margin: 0 auto;
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gutter-tablet);
    }
    
    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-stack-lg);
        max-width: 680px;
        margin: 0 auto;
    }
    
    .contact-info {
        align-items: center;
        text-align: center;
    }
    
    .contact-details {
        align-items: center;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-stack-md);
        text-align: center;
    }
    
    .footer-brand {
        align-items: center;
    }
    
    .footer-brand p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .footer-links-grid {
        justify-content: center;
    }
}

/* Mobile Viewports (<= 768px) */
@media (max-width: 768px) {
    :root {
        --margin-mobile: 24px;
        --gutter-mobile: 16px;
    }
    
    .container {
        padding-left: var(--margin-mobile);
        padding-right: var(--margin-mobile);
    }
    
    .section-padding {
        padding-top: var(--spacing-stack-lg);
        padding-bottom: var(--spacing-stack-lg);
    }
    
    /* Typography */
    .display-lg {
        font-size: 40px;
        line-height: 48px;
        letter-spacing: -0.02em;
    }
    
    .headline-lg {
        font-size: 32px;
        line-height: 40px;
        letter-spacing: -0.01em;
    }
    
    .headline-md {
        font-size: 20px;
        line-height: 28px;
    }
    
    .body-lg {
        font-size: 16px;
        line-height: 26px;
    }
    
    /* Navigation */
    .desktop-nav {
        display: none;
    }
    
    .header-actions .btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    /* Hero */
    .hero-section {
        padding-top: calc(var(--spacing-stack-lg) + 80px);
        padding-bottom: var(--spacing-stack-lg);
        min-height: auto;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .floating-stats-card {
        padding: 10px 14px;
        left: -12px;
        top: 20%;
    }
    
    .stats-icon-wrapper {
        width: 36px;
        height: 36px;
    }
    
    .stats-icon {
        font-size: 20px;
    }
    
    .stats-value {
        font-size: 18px;
        line-height: 24px;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--gutter-mobile);
    }
    
    .service-card {
        padding: 24px 20px;
    }
    
    /* About */
    .stats-row {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .stat-item {
        text-align: center;
    }
    
    .collage-card {
        padding: 24px 20px;
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--gutter-mobile);
    }
    
    .testimonial-card {
        padding: 24px 20px;
    }
    
    /* Contact */
    .form-card {
        padding: 24px 20px;
    }
    
    /* Footer */
    .footer-links-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-menu {
        align-items: center;
    }
}