/* ===================================
   FK EDUTECH - Polished CSS Styles
   =================================== */

/* CSS Variables - Refined Palette */
:root {
    /* Primary Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;

    /* Secondary Colors */
    --secondary: #0f172a;
    --secondary-light: #1e293b;

    /* Accent Colors */
    --accent: #06b6d4;
    --accent-100: #cffafe;
    --accent-glow: #22d3ee;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Status Colors */
    --success: #10b981;
    --success-100: #d1fae5;
    --warning: #f59e0b;
    --error: #ef4444;
    --error-100: #fee2e2;

    /* Dynamic Theme Variables (Light Mode Default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --bg-glass-strong: rgba(255, 255, 255, 0.95);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --shadow-glow: rgba(37, 99, 235, 0.15);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    --gradient-subtle: linear-gradient(
        180deg,
        var(--gray-50) 0%,
        var(--white) 100%
    );
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-glow: radial-gradient(circle at center, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    --gradient-mesh:
        radial-gradient(at 40% 20%, rgba(37, 99, 235, 0.08) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(6, 182, 212, 0.06) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(139, 92, 246, 0.05) 0px, transparent 50%),
        radial-gradient(at 80% 50%, rgba(236, 72, 153, 0.05) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(34, 197, 94, 0.05) 0px, transparent 50%);

    /* Shadows - More refined */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md:
        0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -2px rgba(0, 0, 0, 0.02);
    --shadow-lg:
        0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.02);
    --shadow-xl:
        0 20px 25px -5px rgba(0, 0, 0, 0.05),
        0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.08);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.03);
    --shadow-glow-sm: 0 0 20px rgba(37, 99, 235, 0.15);
    --shadow-glow-md: 0 0 40px rgba(37, 99, 235, 0.2);
    --shadow-glow-lg: 0 0 60px rgba(37, 99, 235, 0.25);
    --shadow-colored:
        0 10px 40px -10px rgba(37, 99, 235, 0.15),
        0 0 20px rgba(6, 182, 212, 0.1);
    --shadow-3d:
        0 20px 40px -15px rgba(0, 0, 0, 0.15),
        0 0 10px rgba(37, 99, 235, 0.1);

    /* Spacing System */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Typography */
    --font-sans:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        sans-serif;
    --leading-tight: 1.25;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;
}

/* ===================================
   DARK MODE
   =================================== */
.dark {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-glass: rgba(15, 23, 42, 0.8);
    --bg-glass-strong: rgba(15, 23, 42, 0.95);
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --border-hover: #475569;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-glow: rgba(37, 99, 235, 0.25);
    --gradient-glow: radial-gradient(circle at center, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
    --white: #0f172a;
    --gray-50: #1e293b;
    --gray-100: #334155;
    --gray-200: #475569;
    --gray-300: #64748b;
    --gray-800: #f1f5f9;
    --gray-900: #f8fafc;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

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

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

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

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

ul,
ol {
    list-style: none;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

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

.flex {
    display: flex;
}
.flex-col {
    flex-direction: column;
}
.items-center {
    align-items: center;
}
.justify-center {
    justify-content: center;
}
.justify-between {
    justify-content: space-between;
}
.flex-wrap {
    flex-wrap: wrap;
}
.gap-4 {
    gap: var(--space-4);
}
.gap-6 {
    gap: var(--space-6);
}
.gap-8 {
    gap: var(--space-8);
}

.mt-4 {
    margin-top: var(--space-4);
}
.mt-6 {
    margin-top: var(--space-6);
}
.mt-8 {
    margin-top: var(--space-8);
}
.mt-12 {
    margin-top: var(--space-12);
}

.mb-4 {
    margin-bottom: var(--space-4);
}
.mb-6 {
    margin-bottom: var(--space-6);
}
.mb-8 {
    margin-bottom: var(--space-8);
}
.mb-12 {
    margin-bottom: var(--space-12);
}

.grid {
    display: grid;
}

/* ===================================
   PRELOADER
   =================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

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

.preloader-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    border-radius: var(--radius-xl);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: preloaderPulse 1.5s ease-in-out infinite;
    box-shadow: var(--shadow-glow-md);
}

.preloader-logo span {
    font-size: 2.5rem;
    color: white;
}

.preloader-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: preloaderFade 1.5s ease-in-out infinite;
}

.preloader-bar {
    width: 200px;
    height: 3px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    margin: var(--space-6) auto 0;
    overflow: hidden;
}

.preloader-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    animation: preloaderProgress 2s ease-in-out infinite;
}

@keyframes preloaderPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes preloaderFade {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes preloaderProgress {
    0% {
        width: 0%;
        margin-left: 0;
    }
    50% {
        width: 70%;
        margin-left: 15%;
    }
    100% {
        width: 100%;
        margin-left: 0;
    }
}

/* ===================================
   CUSTOM CURSOR
   =================================== */
.custom-cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary);
    border-radius: var(--radius-full);
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
    transform: translate(-50%, -50%);
    display: none;
}

@media (pointer: fine) {
    .custom-cursor {
        display: block;
    }
}

.custom-cursor.hover {
    transform: translate(-50%, -50%) scale(1.5);
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--accent-glow);
}

.custom-cursor-dot {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: var(--radius-full);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    display: none;
}

@media (pointer: fine) {
    .custom-cursor-dot {
        display: block;
    }
}

/* ===================================
   PARTICLES BACKGROUND
   =================================== */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: var(--radius-full);
    opacity: 0.3;
    animation: particleFloat linear infinite;
}

.particle:nth-child(odd) {
    background: var(--accent);
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) translateX(0) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) translateX(100px) scale(1);
        opacity: 0;
    }
}

/* ===================================
   GRADIENT ORBS
   =================================== */
.gradient-orb {
    position: fixed;
    border-radius: var(--radius-full);
    filter: blur(80px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
    transition: transform 0.3s ease-out;
}

.gradient-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: orbFloat1 20s ease-in-out infinite;
}

.gradient-orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation: orbFloat2 15s ease-in-out infinite;
}

.gradient-orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #8b5cf6 0%, transparent 70%);
    top: 50%;
    left: 50%;
    animation: orbFloat3 18s ease-in-out infinite;
}

@keyframes orbFloat1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-50px, 50px) scale(1.1);
    }
}

@keyframes orbFloat2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(50px, -30px) scale(1.15);
    }
}

@keyframes orbFloat3 {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    33% {
        transform: translate(-30%, -60%) scale(1.2);
    }
    66% {
        transform: translate(-70%, -40%) scale(0.9);
    }
}

/* ===================================
   SKIP LINK
   =================================== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 9999;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: var(--space-4);
}

/* ===================================
   HEADER
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    background: var(--bg-glass-strong);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    transition: height var(--transition-base);
}

.header.scrolled .header-inner {
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.logo-text span {
    color: var(--primary);
}

/* Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--primary-50);
}

.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: var(--space-1);
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: var(--space-2);
}

.mobile-toggle span {
    width: 100%;
    height: 2.5px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Dark Mode Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    color: var(--primary);
    border-color: var(--border-hover);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow-sm);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    position: absolute;
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0);
    color: #fbbf24;
}

.theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

.dark .theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

.dark .theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0);
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

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

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-sm);
}

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

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

/* ===================================
   SECTIONS
   =================================== */
.section {
    padding: var(--space-16) 0;
    position: relative;
}

.section-label {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-50);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-12);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: var(--leading-tight);
    margin-bottom: var(--space-4);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    background: var(--gradient-mesh);
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    background:
        radial-gradient(
            circle at 20% 80%,
            rgba(37, 99, 235, 0.08) 0%,
            transparent 50%
        ),
        radial-gradient(
            circle at 80% 20%,
            rgba(6, 182, 212, 0.06) 0%,
            transparent 50%
        );
    pointer-events: none;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
}

.hero-text h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: textShine 3s ease-in-out infinite;
}

@keyframes textShine {
    0%, 100% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.2);
    }
}

.hero-text > p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-bottom: var(--space-10);
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: var(--space-2);
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.hero-image {
    width: 100%;
    height: 420px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
}

.hero-image::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        45deg,
        transparent 40%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 60%
    );
    animation: shimmer 3s infinite;
}

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

.hero-icon {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.95);
    position: relative;
    z-index: 1;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    background: var(--white);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    animation: float 4s ease-in-out infinite;
}

.floating-card-1 {
    top: 15%;
    left: -40px;
}

.floating-card-2 {
    bottom: 20%;
    right: -40px;
    animation-delay: 2s;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.floating-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.floating-card-1 .floating-card-icon {
    background: var(--primary-100);
    color: var(--primary);
}

.floating-card-2 .floating-card-icon {
    background: var(--accent-100);
    color: var(--accent);
}

.floating-card-text strong {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
    line-height: 1.3;
}

.floating-card-text span {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* ===================================
   FEATURES SECTION
   =================================== */
.features {
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.feature-card {
    text-align: center;
    padding: var(--space-8) var(--space-6);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.feature-card:hover {
    background: var(--bg-primary);
    border-color: var(--primary);
    transform: translateY(-8px) rotateX(5deg);
    box-shadow: var(--shadow-3d);
}

.feature-card:hover::before {
    opacity: 0.03;
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-5);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

.feature-card:hover .feature-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-glow-sm);
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    position: relative;
    z-index: 1;
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    position: relative;
    z-index: 1;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-img-main {
    width: 100%;
    height: 400px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-colored);
    position: relative;
    overflow: hidden;
}

.about-img-main::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

.about-img-main span {
    font-size: 4.5rem;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    z-index: 1;
}

.about-experience {
    position: absolute;
    bottom: -24px;
    right: -24px;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--space-5) var(--space-6);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-colored);
}

.about-experience span {
    font-size: 2rem;
    font-weight: 700;
    display: block;
    line-height: 1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-experience small {
    font-size: 0.8125rem;
    opacity: 0.9;
    margin-top: var(--space-1);
    display: block;
    color: var(--text-secondary);
}

.about-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-5);
}

.about-content > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: var(--leading-relaxed);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.about-feature-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    background: var(--primary-100);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.about-feature span {
    font-size: 0.9375rem;
    color: var(--text-primary);
}

/* ===================================
   SERVICES SECTION
   =================================== */
.services {
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.service-card {
    background: var(--bg-primary);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-colored);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--space-5);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-glow-sm);
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    position: relative;
    z-index: 1;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
    position: relative;
    z-index: 1;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    transition: gap var(--transition-fast);
    position: relative;
    z-index: 1;
}

.service-link:hover {
    gap: var(--space-3);
}

/* ===================================
   PROCESS SECTION
   =================================== */
.process {
    background: var(--gray-50);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
    position: relative;
}

.process-timeline::before {
    content: "";
    position: absolute;
    top: 36px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(
        90deg,
        var(--gray-300),
        var(--primary),
        var(--gray-300)
    );
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-5);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-500);
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.process-step:hover .step-number {
    border-color: var(--primary);
    color: var(--primary);
    transform: scale(1.05);
}

.process-step:nth-child(1):hover .step-number {
    background: var(--primary);
    color: white;
}
.process-step:nth-child(2):hover .step-number {
    background: var(--primary);
    color: white;
}
.process-step:nth-child(3):hover .step-number {
    background: var(--primary);
    color: white;
}
.process-step:nth-child(4):hover .step-number {
    background: var(--primary);
    color: white;
}

.process-step h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.process-step p {
    font-size: 0.875rem;
    color: var(--gray-500);
    padding: 0 var(--space-4);
    line-height: var(--leading-relaxed);
}

/* ===================================
   TESTIMONIALS SECTION
   =================================== */
.testimonials {
    background: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.testimonial-card {
    background: var(--gray-50);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-100);
    position: relative;
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

.testimonial-quote {
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.15;
    position: absolute;
    top: var(--space-4);
    left: var(--space-5);
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card > p {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-5);
    padding-top: var(--space-4);
    position: relative;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1rem;
}

.author-info strong {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-900);
}

.author-info span {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.testimonial-rating {
    color: #fbbf24;
    font-size: 0.875rem;
    margin-top: var(--space-3);
    letter-spacing: 2px;
}

/* ===================================
   CLIENTS SECTION
   =================================== */
.clients {
    background: var(--gray-50);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-5);
    align-items: center;
}

.client-logo {
    padding: var(--space-4);
    background: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 72px;
    border: 1px solid var(--gray-200);
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--transition-base);
}

.client-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.03);
    border-color: var(--primary-100);
    box-shadow: var(--shadow-md);
}

.client-logo span {
    font-weight: 600;
    color: var(--gray-600);
    font-size: 0.8125rem;
}

/* ===================================
   FAQ SECTION
   =================================== */
.faq {
    background: var(--white);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--gray-300);
}

.faq-item.active {
    background: var(--white);
    border-color: var(--primary-100);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: var(--space-5) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-800);
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question span {
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: transform var(--transition-base);
    line-height: 1;
}

.faq-item.active .faq-question span {
    transform: rotate(45deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 150px;
}

.faq-answer p {
    padding: 0 var(--space-6) var(--space-5);
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: var(--leading-relaxed);
}

/* ===================================
   CTA SECTION
   =================================== */
.cta {
    background: var(--gradient-primary);
    padding: var(--space-16) 0;
}

.cta-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}

.cta p {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
}

.cta .btn-secondary {
    background: white;
    color: var(--primary);
    border-color: white;
}

.cta .btn-secondary:hover {
    background: transparent;
    color: white;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-10);
}

.contact-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.contact-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow-sm);
    transform: translateX(4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.contact-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.contact-item a {
    color: var(--primary);
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.social-link {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    font-size: 1rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-primary);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.contact-form-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    position: relative;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group label span {
    color: var(--error);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: var(--space-3) var(--space-4);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px var(--primary-50);
}

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

.form-group textarea {
    min-height: 130px;
    resize: vertical;
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--error);
}

.form-group .error-message {
    font-size: 0.75rem;
    color: var(--error);
    margin-top: var(--space-1);
    display: none;
}

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

.form-submit {
    margin-top: var(--space-2);
}

.form-submit .btn {
    width: 100%;
    padding: var(--space-4);
    font-size: 1rem;
}

.form-message {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    display: none;
}

.form-message.success {
    display: block;
    background: var(--success-100);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.form-message.error {
    display: block;
    background: var(--error-100);
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--secondary);
    color: var(--text-primary);
    padding: var(--space-14) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-10);
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.footer-logo img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-brand p {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-5);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.footer-column h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: var(--space-5);
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-column a {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.footer-column a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: white;
}

/* ===================================
   SCROLL TO TOP
   =================================== */
.scroll-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-24px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(24px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

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

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

/* Scroll Reveal Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.animate-on-scroll.from-left {
    transform: translateX(-50px);
}

.animate-on-scroll.from-left.is-visible {
    transform: translateX(0);
}

.animate-on-scroll.from-right {
    transform: translateX(50px);
}

.animate-on-scroll.from-right.is-visible {
    transform: translateX(0);
}

.animate-on-scroll.scale {
    transform: scale(0.9);
}

.animate-on-scroll.scale.is-visible {
    transform: scale(1);
}

/* Staggered Animation Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Typing Effect */
.typing-text {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--primary);
    animation: typewriter 3s steps(40, end), blink 0.75s step-end infinite;
}

/* Animated Counter */
.counter-number {
    display: inline-block;
}

/* Parallax Effect */
.parallax-slow {
    will-change: transform;
}

.parallax-medium {
    will-change: transform;
}

.parallax-fast {
    will-change: transform;
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .process-timeline::before {
        display: none;
    }
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

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

    .about-image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }

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

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

    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

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

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

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 90px var(--space-6) var(--space-6);
        gap: var(--space-2);
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-base);
    }

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

    .nav-link {
        width: 100%;
        padding: var(--space-3) var(--space-4);
        font-size: 1rem;
    }

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

    .section {
        padding: var(--space-12) 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 var(--space-12);
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-6);
    }

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

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

    .process-timeline {
        grid-template-columns: 1fr;
    }

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

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

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

    .hero-text h1 {
        font-size: 1.75rem;
    }

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

    .btn {
        width: 100%;
    }

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

    .cta h2 {
        font-size: 1.5rem;
    }

    .floating-card {
        display: none;
    }
}