/* ===================================
   INFINITY STEM - DUOLINGO-INSPIRED DESIGN
   Modern, Playful, Engaging
   =================================== */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Duolingo-Inspired Palette */
    --color-primary: #58cc02;          /* Duolingo Green */
    --color-primary-dark: #46a302;     /* Pressed state */
    --color-primary-light: #89e219;    /* Lighter green */
    
    --color-secondary: #1cb0f6;        /* Bright Sky Blue */
    --color-secondary-dark: #1899d6;
    
    --color-accent: #ff9600;           /* Warm Orange */
    --color-accent-dark: #e68600;
    
    --color-purple: #ce82ff;           /* Fun Purple */
    --color-purple-dark: #b865f5;
    
    --color-red: #ff4b4b;              /* Alert Red */
    --color-red-dark: #ea2b2b;
    
    /* Backgrounds - Clean & Bright */
    --color-bg-main: #ffffff;
    --color-bg-alt: #f7f7f7;
    --color-bg-card: #ffffff;
    --color-bg-dark: #235390;          /* Deep Blue for footer/CTAs */
    
    /* Text */
    --color-text: #3c3c3c;
    --color-text-muted: #777777;
    --color-text-light: #afafaf;
    --color-text-inverse: #ffffff;
    
    /* Borders */
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;
    
    /* Typography */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Font Sizes */
    --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: 1.75rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3.5rem;
    --font-size-hero: clamp(2.5rem, 6vw, 4rem);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius - SUPER ROUNDED */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows - Duolingo 3D Style */
    --shadow-3d-sm: 0 4px 0;
    --shadow-3d: 0 6px 0;
    --shadow-3d-lg: 0 8px 0;
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-card: 0 2px 0 var(--color-border);
    
    /* Timing */
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s;
    --transition-base: 0.2s;
    
    /* Z-index */
    --z-navbar: 1000;
    --z-modal: 2000;
}

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

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

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-hero); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

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

strong {
    font-weight: 700;
    color: var(--color-text);
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-5 { margin-bottom: var(--spacing-3xl); }
.mt-4 { margin-top: var(--spacing-xl); }
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-3 { gap: var(--spacing-lg); }
.justify-content-center { justify-content: center; }
.row { display: flex; flex-wrap: wrap; margin: 0 calc(var(--spacing-lg) * -1); }
.col-lg-8 { flex: 0 0 auto; width: 100%; max-width: 800px; padding: 0 var(--spacing-lg); }

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

/* ===== SECTION STYLES ===== */
.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.section-light {
    background-color: var(--color-bg-alt);
}

.section-white {
    background-color: var(--color-bg-main);
}

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

.section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    position: relative;
}

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

/* ===== NAVIGATION - Duolingo Style ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-main);
    padding: var(--spacing-md) 0;
    z-index: var(--z-navbar);
    border-bottom: 2px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.infinity-icon {
    width: 36px;
    height: 18px;
    color: var(--color-primary);
}

.brand-text {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-text);
}

.brand-highlight {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-link:hover {
    color: var(--color-primary);
    background: rgba(88, 204, 2, 0.1);
}

.nav-links .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--color-text);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ===== BUTTONS - Duolingo 3D Style ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-3d) var(--color-primary-dark);
    border-bottom: 4px solid var(--color-primary-dark);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-3d-lg) var(--color-primary-dark);
}

.btn-primary:active {
    transform: translateY(4px);
    box-shadow: none;
    border-bottom-width: 0;
}

.btn-secondary {
    background: var(--color-bg-main);
    color: var(--color-secondary);
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-3d-sm) var(--color-border);
}

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

.btn-secondary:active {
    transform: translateY(2px);
    box-shadow: none;
}

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

.btn-red {
    background: var(--color-red);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-3d) var(--color-red-dark);
    border-bottom: 4px solid var(--color-red-dark);
}

.btn-red:hover {
    background: #ff6b6b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-3d-lg) var(--color-red-dark);
}

.btn-red:active {
    transform: translateY(4px);
    box-shadow: none;
    border-bottom-width: 0;
}

.btn-blue {
    background: var(--color-secondary);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-3d) var(--color-secondary-dark);
    border-bottom: 4px solid var(--color-secondary-dark);
}

.btn-blue:hover {
    background: #4fc3f7;
    transform: translateY(-2px);
    box-shadow: var(--shadow-3d-lg) var(--color-secondary-dark);
}

.btn-blue:active {
    transform: translateY(4px);
    box-shadow: none;
    border-bottom-width: 0;
}

/* ===== HERO SECTION - Fun & Bouncy ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 100px;
    padding-bottom: var(--spacing-4xl);
    position: relative;
    overflow: hidden;
    background: linear-gradient(
        -45deg, 
        #e8f5e9,
        #e3f2fd,
        #fff3e0,
        #e8f5e9,
        #e1f5fe
    );
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

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

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--color-primary-light);
    top: 10%;
    left: -10%;
    animation: blobFloat 8s ease-in-out infinite;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: var(--color-secondary);
    bottom: 10%;
    right: -5%;
    animation: blobFloat 10s ease-in-out infinite reverse;
}

@keyframes blobFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-bg-main);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-card);
}

.hero-badge__dot {
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.hero-badge__text {
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-title span {
    color: var(--color-primary);
    display: inline-block;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.6;
}

/* ===== CARDS - Duolingo Floating Style ===== */
.card-playful {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base) var(--ease-smooth);
    position: relative;
    box-shadow: var(--shadow-card);
}

.card-playful:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 12px 24px rgba(88, 204, 2, 0.15);
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--color-bg-main);
    position: relative;
    border-top: 3px solid var(--color-border);
    box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.03);
}

.infinity-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(150px, 20vw, 250px);
    color: var(--color-primary);
    opacity: 0.05;
    font-weight: 900;
    pointer-events: none;
    user-select: none;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

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

/* ===== VALUE PROPOSITION ===== */
.value-proposition {
    background: var(--color-bg-alt);
}

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

.value-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    background: rgba(88, 204, 2, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

.value-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.value-description {
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== PROGRAMS SECTION ===== */
.programs {
    background: var(--color-bg-main);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.program-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--color-secondary);
}

.program-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.program-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ===== IDE SECTION ===== */
.ide {
    background: var(--color-bg-alt);
    border-top: 3px solid var(--color-border);
    border-bottom: 3px solid var(--color-border);
}

.ide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.ide-info {
    max-width: 500px;
}

.ide-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.ide-description {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.ide-features {
    margin: var(--spacing-xl) 0;
}

.ide-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.check-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    flex-shrink: 0;
}

/* IDE Mockup */
.ide-visual {
    display: flex;
    justify-content: center;
}

.ide-mockup {
    background: var(--color-bg-card);
    border: 3px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    max-width: 450px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.mockup-header {
    background: var(--color-secondary);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.mockup-title {
    color: white;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--font-size-sm);
    margin-left: var(--spacing-sm);
}

.mockup-content {
    padding: var(--spacing-xl);
    background: #fafafa;
}

.code-block {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-sm);
    box-shadow: 0 3px 0 rgba(0, 0, 0, 0.2);
}

.block-blue {
    background: var(--color-secondary);
}

.block-green {
    background: var(--color-primary);
    margin-left: var(--spacing-lg);
}

.block-yellow {
    background: var(--color-accent);
    color: white;
    margin-left: var(--spacing-lg);
}

/* ===== WHY CHOOSE SECTION ===== */
.why-choose {
    background: var(--color-bg-main);
    position: relative;
}

.why-choose-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.why-list {
    list-style: none;
}

.why-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.why-item .check-icon {
    margin-top: 4px;
    color: var(--color-primary);
}

.why-choose-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: var(--radius-xl);
    overflow: hidden;
    object-fit: cover;
    border: 3px solid var(--color-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ===== SUCCESS STORIES ===== */
.success-stories {
    background: var(--color-bg-alt);
}

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

.testimonial-card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    position: relative;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-secondary);
}

.quote-icon {
    font-size: 64px;
    color: var(--color-secondary);
    opacity: 0.3;
    line-height: 0.8;
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.author-name {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.highlight-card {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(255, 150, 0, 0.05) 0%, transparent 100%);
}

.highlight-card:hover {
    border-color: var(--color-accent);
}

.partnership-badge {
    width: 56px;
    height: 56px;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.partnership-title {
    color: var(--color-accent);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

/* ===== CTA SECTION ===== */
.cta {
    background: var(--color-bg-dark);
    position: relative;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.infinity-watermark-large {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(200px, 40vw, 400px);
    color: rgba(255, 255, 255, 0.03);
    font-weight: 900;
    pointer-events: none;
    user-select: none;
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-lg);
}

.cta-title .gradient-text {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-2xl);
}

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

.cta .btn-primary {
    background: var(--color-primary);
    box-shadow: var(--shadow-3d) var(--color-primary-dark);
}

.cta .btn-secondary {
    background: transparent;
    color: var(--color-text-inverse);
    border-color: rgba(255, 255, 255, 0.3);
}

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

/* ===== FOOTER ===== */
.footer {
    background: #1a1a2e;
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    color: var(--color-text-inverse);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-brand .brand-text {
    color: var(--color-text-inverse);
}

.footer-brand .brand-highlight {
    color: var(--color-primary);
}

.footer-brand .infinity-icon {
    color: var(--color-primary);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-title {
    color: var(--color-text-inverse);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-links, .footer-contact {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-contact svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    color: rgba(255, 255, 255, 0.6);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

/* ===== ANIMATIONS ===== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-blur-in {
    animation: fadeInUp 0.8s ease-out forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .why-choose-grid,
    .ide-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .why-choose-image,
    .ide-visual {
        order: -1;
    }
    
    .ide-info {
        max-width: 100%;
        text-align: center;
    }
    
    .ide-features {
        max-width: 400px;
        margin: var(--spacing-xl) auto;
    }
    
    .d-flex.gap-3 {
        flex-direction: column;
        align-items: center;
    }
    
    .d-flex.gap-3 .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-4xl: 4rem;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--color-bg-main);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        border-top: 2px solid var(--color-border);
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .value-grid,
    .programs-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-contact li {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* ===== ACCESSIBILITY ===== */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

:focus:not(:focus-visible) {
    outline: none;
}

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

/* ===== SCROLL ANIMATIONS ===== */
.reveal-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s var(--ease-smooth);
}

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