/* ========================================
   UXI — Unified eXperience Intelligence
   Premium Digital Agency Website
   Base Styles & Design System
   ======================================== */

/* ----------------------------------------
   CSS Custom Properties
   ---------------------------------------- */
:root {
    /* Colors */
    --color-bg: #000000;
    --color-bg-elevated: #0a0a0a;
    --color-bg-card: #111111;
    --color-surface: #1a1a1a;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    
    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.6);
    --color-text-tertiary: rgba(255, 255, 255, 0.4);
    
    --color-accent: #0066ff;
    --color-accent-light: #3385ff;
    --color-accent-glow: rgba(0, 102, 255, 0.4);
    --color-accent-subtle: rgba(0, 102, 255, 0.1);
    
    /* 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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;
    --font-size-7xl: 6rem;
    --font-size-hero: clamp(5rem, 15vw, 12rem);
    
    /* 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;
    --spacing-5xl: 8rem;
    --spacing-section: clamp(6rem, 15vh, 10rem);
    
    /* Layout */
    --container-max: 1400px;
    --container-padding: clamp(1.5rem, 5vw, 4rem);
    
    /* Borders */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px var(--color-accent-glow);
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
    --duration-slower: 800ms;
    
    /* Z-index */
    --z-base: 1;
    --z-elevated: 10;
    --z-nav: 100;
    --z-modal: 1000;
    --z-cursor: 9999;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

::selection {
    background-color: var(--color-accent);
    color: var(--color-text);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--duration-normal) var(--ease-out);
}

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

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

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

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

section {
    position: relative;
    padding: var(--spacing-section) 0;
}

/* ----------------------------------------
   Typography
   ---------------------------------------- */
.section-label {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--spacing-3xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

/* ----------------------------------------
   Cursor Glow
   ---------------------------------------- */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    opacity: 0.3;
    z-index: var(--z-cursor);
    transition: opacity var(--duration-slow) var(--ease-out);
    mix-blend-mode: screen;
}

.cursor-glow.hidden {
    opacity: 0;
}

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

.nav.scrolled {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-links a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--duration-normal) var(--ease-out);
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-cta {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-text);
    color: var(--color-bg) !important;
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-out) !important;
}

.nav-cta:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: var(--radius-full);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.2);
}

.btn-primary .btn-glow {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.4) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform var(--duration-slow) var(--ease-out);
}

.btn-primary:hover .btn-glow {
    transform: translateX(100%);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

/* ----------------------------------------
   Hero Section
   ---------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, var(--color-accent-subtle) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 102, 255, 0.05) 0%, transparent 50%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.3;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero-content {
    text-align: center;
    max-width: 1000px;
    padding: 0 var(--container-padding);
}

.hero-logo-wrapper {
    position: relative;
    display: inline-block;
    perspective: 1000px;
    margin-bottom: var(--spacing-lg);
}

.hero-logo {
    font-size: var(--font-size-hero);
    font-weight: 700;
    letter-spacing: 0.05em;
    line-height: 1;
    background: linear-gradient(180deg, var(--color-text) 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transform-style: preserve-3d;
    animation: heroFloat 6s ease-in-out infinite;
}

.hero-logo-shadow {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%) translateZ(-50px) rotateX(20deg);
    font-size: var(--font-size-hero);
    font-weight: 700;
    letter-spacing: 0.05em;
    line-height: 1;
    color: transparent;
    text-shadow: 0 0 80px var(--color-accent-glow);
    opacity: 0.5;
    pointer-events: none;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0) rotateX(0); }
    50% { transform: translateY(-10px) rotateX(2deg); }
}

.hero-subtitle {
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-2xl);
}

.hero-headline {
    font-size: clamp(var(--font-size-xl), 3.5vw, var(--font-size-4xl));
    font-weight: 400;
    line-height: 1.4;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-3xl);
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-3xl);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(180deg, var(--color-accent) 0%, transparent 100%);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ----------------------------------------
   Services Section
   ---------------------------------------- */
.services {
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.service-card {
    position: relative;
    perspective: 1000px;
}

.service-card-inner {
    position: relative;
    padding: var(--spacing-3xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--duration-normal) var(--ease-out);
    transform-style: preserve-3d;
}

.service-card:hover .service-card-inner {
    border-color: var(--color-border-hover);
    transform: translateY(-5px);
}

.service-number {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xl);
}

.service-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.service-desc {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.service-line {
    position: absolute;
    bottom: 0;
    left: var(--spacing-3xl);
    right: var(--spacing-3xl);
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.service-card:hover .service-line {
    opacity: 1;
}

.service-glow {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--color-accent-subtle) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
    pointer-events: none;
}

.service-card:hover .service-glow {
    opacity: 1;
}

.services-subline {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
}

/* ----------------------------------------
   Work Section
   ---------------------------------------- */
.work {
    background: var(--color-bg-elevated);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--spacing-xl);
}

.work-card {
    perspective: 1000px;
}

.work-card-inner {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform-style: preserve-3d;
    transition: all var(--duration-slow) var(--ease-out);
}

.work-card:hover .work-card-inner {
    transform: translateY(-10px);
}

.work-card-bg {
    position: absolute;
    inset: 0;
    background: var(--color-surface);
    overflow: hidden;
}

.work-card-pattern {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(135deg, var(--color-accent-subtle) 0%, transparent 50%),
        repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(255,255,255,0.02) 20px, rgba(255,255,255,0.02) 40px);
    transition: transform var(--duration-slower) var(--ease-out);
}

.work-card:hover .work-card-pattern {
    transform: scale(1.1);
}

.work-card-pattern.pattern-2 {
    background: 
        linear-gradient(225deg, rgba(0, 200, 150, 0.1) 0%, transparent 50%),
        repeating-linear-gradient(-45deg, transparent, transparent 20px, rgba(255,255,255,0.02) 20px, rgba(255,255,255,0.02) 40px);
}

.work-card-pattern.pattern-3 {
    background: 
        linear-gradient(315deg, rgba(150, 0, 255, 0.1) 0%, transparent 50%),
        repeating-linear-gradient(90deg, transparent, transparent 20px, rgba(255,255,255,0.02) 20px, rgba(255,255,255,0.02) 40px);
}

.work-card-content {
    position: absolute;
    inset: 0;
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.8) 100%);
}

.work-category {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.work-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
}

.work-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 300px;
}

.work-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--duration-normal) var(--ease-out);
}

.work-link svg {
    transition: transform var(--duration-normal) var(--ease-out);
}

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

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

.work-card-glow {
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--color-accent) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
    z-index: -1;
}

.work-card:hover .work-card-glow {
    opacity: 0.3;
}

/* ----------------------------------------
   Why UXI Section
   ---------------------------------------- */
.why {
    position: relative;
    overflow: hidden;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.why-item {
    position: relative;
}

.why-item-inner {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
}

.why-number {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.why-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.why-desc {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.why-bg-text {
    position: absolute;
    bottom: -5%;
    left: 50%;
    transform: translateX(-50%);
    font-size: clamp(6rem, 20vw, 20rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    opacity: 0.02;
    white-space: nowrap;
    pointer-events: none;
    z-index: -1;
}

/* ----------------------------------------
   About Section
   ---------------------------------------- */
.about {
    position: relative;
    overflow: hidden;
    background: var(--color-bg-elevated);
}

.about-content {
    max-width: 800px;
}

.about .section-header {
    text-align: left;
}

.about-text {
    margin-bottom: var(--spacing-4xl);
}

.about-lead {
    font-size: clamp(var(--font-size-xl), 2.5vw, var(--font-size-3xl));
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: var(--spacing-xl);
}

.about-body {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: var(--spacing-4xl);
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.about-parallax-bg {
    position: absolute;
    top: 20%;
    right: -10%;
    width: 50%;
    height: 60%;
    background: radial-gradient(circle, var(--color-accent-subtle) 0%, transparent 60%);
    opacity: 0.5;
    pointer-events: none;
}

/* ----------------------------------------
   Contact Section
   ---------------------------------------- */
.contact {
    background: var(--color-bg);
}

.contact-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

.contact-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.contact-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.form-group {
    position: relative;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--duration-normal) var(--ease-out);
}

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

.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 var(--color-accent-subtle);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.input-glow {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.form-group input:focus ~ .input-glow,
.form-group select:focus ~ .input-glow,
.form-group textarea:focus ~ .input-glow {
    opacity: 1;
}

.btn-submit {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    margin-top: var(--spacing-md);
}

.btn-submit .btn-loading,
.btn-submit .btn-success {
    position: absolute;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .btn-loading {
    opacity: 1;
}

.btn-submit.success .btn-text {
    opacity: 0;
}

.btn-submit.success .btn-success {
    opacity: 1;
}

.spinner {
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.btn-success svg {
    width: 24px;
    height: 24px;
}

/* Form Success Message */
.form-success {
    display: none;
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-xl);
    animation: fadeInUp var(--duration-slow) var(--ease-out);
}

.form-success.show {
    display: block;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-accent);
}

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

.form-success h3 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.form-success p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: 0.1em;
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--duration-normal) var(--ease-out);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

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

/* ----------------------------------------
   Responsive Design
   ---------------------------------------- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .services-grid,
    .work-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        gap: var(--spacing-2xl);
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    /* Hero Section Mobile */
    .hero {
        padding-top: 100px;
        min-height: auto;
    }
    
    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }
    
    .hero-subtitle {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    /* Why Section Mobile */
    .why-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .why-card {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-hero: 3rem;
        --container-padding: 1rem;
    }
    
    .hero-headline {
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.875rem;
    }
}