/* ===== CSS Variables - VIBRANT Color Palette ===== */
:root {
    /* Primary Colors - BOOSTED SATURATION */
    --primary: #4558cc;
    /* Vibrant Blue-Purple */
    --primary-dark: #3344aa;
    --primary-light: #a8c0ff;
    /* Brighter Light Blue */

    /* Secondary Colors - VIVID Greens */
    --secondary: #5cb85c;
    /* Vibrant Green */
    --secondary-dark: #00a040;
    /* Rich Dark Green */
    --secondary-light: #7de8c0;
    /* Bright Mint */

    /* Accent Colors - BOLD Teals */
    --accent: #20c997;
    /* Vivid Aqua Teal */
    --accent-dark: #1a8a6e;
    /* Deep Teal */

    /* Neutral Colors - DEEPER Contrast */
    --dark: #1a2d3d;
    /* Deeper Blue-Gray */
    --dark-light: #2a3f52;
    --dark-section: #0f1d2a;
    --gray: #5a7089;
    --gray-light: #b5c6fe;
    /* Lighter for subtitles */
    --text-soft: rgba(135, 201, 180, 0.9);
    /* Soft text color */
    --light: #e8f4ff;
    --white: #ffffff;

    /* VIBRANT Gradients */
    --gradient: linear-gradient(135deg, #4558cc 0%, #00a040 50%, #20c997 100%);
    --gradient-hero: linear-gradient(135deg, #0f1d2a 0%, #1a2d3d 40%, #1a4d3d 100%);
    --gradient-teal: linear-gradient(135deg, #1a8a6e, #20c997);
    --gradient-button: linear-gradient(135deg, #5cb85c, #20c997);
    --gradient-subtle: linear-gradient(135deg, rgba(69, 88, 204, 0.15), rgba(92, 184, 92, 0.15));

    /* COLORED Shadows */
    --shadow-sm: 0 2px 8px rgba(26, 45, 61, 0.25);
    --shadow-md: 0 4px 20px rgba(26, 45, 61, 0.35);
    --shadow-lg: 0 8px 40px rgba(26, 45, 61, 0.45);
    --shadow-glow-primary: 0 0 20px rgba(69, 88, 204, 0.5);
    --shadow-glow-green: 0 0 20px rgba(92, 184, 92, 0.5);
    --shadow-glow-teal: 0 0 20px rgba(32, 201, 151, 0.5);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
}

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

/* ===== Custom Scrollbar ===== */
/* Webkit browsers (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #1a2d3d;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #5cb85c, #20c997);
    border-radius: 5px;
    border: 2px solid #1a2d3d;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #7de8c0, #87c9b4);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #5cb85c #1a2d3d;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

body.physics-active {
    overflow: hidden;
}

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

ul {
    list-style: none;
}

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

/* ===== Scroll Progress Indicator ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 5px;
    background: linear-gradient(90deg, #4558cc, #5cb85c, #20c997);
    z-index: 100001;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 15px #5cb85c, 0 0 30px #20c997;
}

/* ===== Physics Landing Section ===== */
.physics-landing {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #0a151f 0%, #1a2d3d 40%, #152a35 80%, #1a3d3d 100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform, opacity;
}

.physics-landing.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(1.1);
}

.physics-landing.zoom-z {
    animation: zoomIntoZ 2s cubic-bezier(0.4, 0.0, 0.2, 1) forwards;
}

@keyframes zoomIntoZ {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    40% {
        transform: scale(2.5);
        opacity: 1;
    }

    70% {
        transform: scale(4);
        opacity: 0.8;
    }

    100% {
        transform: scale(6);
        opacity: 0;
    }
}

#physics-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.zevo-container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
}

.zevo-container.physics-started {
    opacity: 0;
}

.zevo-letters {
    display: flex;
    gap: 10px;
    position: relative;
}

.zevo-letter {
    font-size: clamp(80px, 15vw, 200px);
    font-weight: 900;
    background: linear-gradient(135deg, #fff 0%, #a8c0ff 40%, #7de8c0 70%, #20c997 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 80px rgba(32, 201, 151, 0.6);
    filter: drop-shadow(0 10px 40px rgba(92, 184, 92, 0.4)) drop-shadow(0 0 60px rgba(69, 88, 204, 0.3));
    transition: transform 0.3s ease, filter 0.3s ease;
    user-select: none;
}

.zevo-letter:hover {
    transform: scale(1.08);
    filter: drop-shadow(0 10px 50px rgba(92, 184, 92, 0.6)) drop-shadow(0 0 80px rgba(32, 201, 151, 0.5));
}

.koala {
    position: absolute;
    top: -100px;
    /* Adjusted to sit naturally on Z */
    left: 0;
    /* Align with Z letter (first letter) */
    transform: translateX(-10%);
    /* Fine-tune centering on Z */
    width: clamp(80px, 12vw, 140px);
    /* Slightly smaller for better proportion */
    height: auto;
    z-index: 10;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.koala.sitting {
    animation: koalaBounce 2s ease-in-out infinite;
}

@keyframes koalaBounce {

    0%,
    100% {
        transform: translateX(-10%) translateY(0);
    }

    50% {
        transform: translateX(-10%) translateY(-10px);
    }
}

.koala.flying-off {
    animation: flyOff 0.8s ease-out forwards;
}

@keyframes flyOff {
    0% {
        transform: translateX(-10%) translateY(0) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateX(50%) translateY(-500px) rotate(180deg);
        opacity: 0;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: fit-content;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 10;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.scroll-indicator span {
    font-size: 0.9rem;
    color: var(--gray-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 12px;
    background: var(--primary);
    border-radius: 3px;
    animation: scrollDown 1.5s ease-in-out infinite;
}

@keyframes scrollDown {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }

    50% {
        transform: translateX(-50%) translateY(15px);
        opacity: 0.3;
    }
}

/* Physics Body Styles (rendered on canvas, these are for reference) */
.physics-letter {
    font-size: 150px;
    font-weight: 900;
    color: #fff;
}

/* ===== Main Content ===== */
.main-content {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    pointer-events: none;
}

.main-content.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
    font-weight: 700;
}

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

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

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--gray-light);
    padding: 8px 0;
}

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

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, #5cb85c, #20c997);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(92, 184, 92, 0.5), 0 0 30px rgba(32, 201, 151, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 35px rgba(92, 184, 92, 0.6), 0 0 50px rgba(32, 201, 151, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(32, 201, 151, 0.4);
}

.btn-secondary:hover {
    background: rgba(32, 201, 151, 0.15);
    border-color: #20c997;
    box-shadow: 0 0 20px rgba(32, 201, 151, 0.3);
}

.btn-full {
    width: 100%;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(4rem, 15vw, 9rem);
    /* 1.5-2x larger ZEVO */
    font-weight: 900;
    line-height: 1;
    margin-bottom: 30px;
    letter-spacing: -2px;
}

.gradient-text {
    background: linear-gradient(135deg, #5cb85c, #20c997, #4558cc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 60px rgba(32, 201, 151, 0.4));
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #b5c6fe;
    /* Lighter subtitle color */
    margin-bottom: 20px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 8s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #4558cc, #20c997);
    top: 10%;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #5cb85c, #00a040);
    top: 50%;
    right: -50px;
    animation-delay: -2s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #20c997, #1a8a6e);
    bottom: 10%;
    left: 30%;
    animation-delay: -4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) scale(1);
    }

    50% {
        transform: translateY(-30px) scale(1.05);
    }
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===== About Section ===== */
.about {
    background: var(--dark-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    color: var(--gray-light);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.stats {
    display: flex;
    gap: 40px;
    justify-content: center;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--dark);
    border-radius: var(--radius-lg);
    min-width: 120px;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* ===== Hero Enhancements ===== */
.hero-description {
    font-size: 1.1rem;
    color: rgba(135, 201, 180, 0.85);
    /* Soft mint text */
    max-width: 700px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

.coming-soon-badge {
    margin-top: 40px;
}

.coming-soon-badge span {
    display: inline-block;
    padding: 12px 28px;
    background: linear-gradient(135deg, rgba(32, 201, 151, 0.2), rgba(92, 184, 92, 0.2));
    border: 1px solid rgba(32, 201, 151, 0.4);
    border-radius: 50px;
    color: #7de8c0;
    font-weight: 600;
    font-size: 1rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* ===== Section Subtitles ===== */
.section-subtitle {
    text-align: center;
    color: #87c9b4;
    /* Soft mint accent */
    font-size: 1.15rem;
    font-weight: 500;
    margin-top: -40px;
    margin-bottom: 50px;
}

/* ===== Features Section - 2x2 Grid ===== */
.features {
    background: var(--dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    /* Fixed 2 columns */
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: linear-gradient(145deg, #1a2d3d, #2a3f52);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    border: 1px solid rgba(32, 201, 151, 0.15);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: #20c997;
    box-shadow: 0 20px 50px rgba(32, 201, 151, 0.2), 0 0 40px rgba(92, 184, 92, 0.1);
}

.feature-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(32, 201, 151, 0.15);
    line-height: 1;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--white);
}

.feature-card p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Why ZEVO Section ===== */
.why-zevo {
    background: linear-gradient(180deg, var(--dark) 0%, #0f1d2a 100%);
}

.why-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--gray-light);
    font-size: 1.1rem;
    line-height: 1.8;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.why-card {
    background: linear-gradient(145deg, rgba(32, 201, 151, 0.08), rgba(92, 184, 92, 0.05));
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    border: 1px solid rgba(32, 201, 151, 0.2);
    transition: var(--transition);
    position: relative;
}

.why-card:hover {
    transform: translateY(-8px);
    border-color: #5cb85c;
    box-shadow: 0 15px 40px rgba(92, 184, 92, 0.2);
}

.why-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #5cb85c, #20c997);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    display: block;
}

.why-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--white);
}

.why-card p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== About Section Enhanced ===== */
.about {
    background: var(--dark-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text .about-lead {
    font-size: 1.4rem;
    color: var(--white);
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.5;
}

.about-text p {
    color: var(--gray-light);
    font-size: 1.05rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-mission {
    background: linear-gradient(145deg, rgba(69, 88, 204, 0.1), rgba(32, 201, 151, 0.1));
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid rgba(69, 88, 204, 0.2);
}

.about-mission h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #ffffff;
    /* Dark green for Hedefimiz */
}

.about-mission p {
    color: var(--gray-light);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ===== Team Section ===== */
.team {
    background: var(--dark);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.team-card {
    background: linear-gradient(145deg, #1a2d3d, #2a3f52);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-10px);
    border-color: rgba(32, 201, 151, 0.4);
    box-shadow: 0 20px 50px rgba(32, 201, 151, 0.15);
}

/* Team Avatar Images */
.team-avatar-img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 25px;
    border: 4px solid rgba(32, 201, 151, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 40px rgba(32, 201, 151, 0.15);
    transition: var(--transition);
}

.team-card:hover .team-avatar-img {
    border-color: #20c997;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 60px rgba(32, 201, 151, 0.3);
    transform: scale(1.05);
}

.team-avatar {
    font-size: 4rem;
    margin-bottom: 20px;
    display: block;
}

.team-card h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--white);
}

.team-role {
    color: #20c997;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.team-desc {
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* ===== Enhanced Footer ===== */
.footer {
    background: #0a151f;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(32, 201, 151, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.footer-tagline {
    color: var(--gray-light);
    font-size: 0.95rem;
}

.footer-links h4,
.footer-social h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--gray-light);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #20c997;
}

.footer-social .social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(32, 201, 151, 0.1);
    border: 1px solid rgba(32, 201, 151, 0.2);
    border-radius: 50%;
    color: var(--gray-light);
    transition: var(--transition);
}

.social-link:hover {
    background: #20c997;
    border-color: #20c997;
    color: var(--dark);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
}

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

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient);
    transform: translateY(-3px);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        align-items: center;
        padding: 40px 24px;
        gap: 24px;
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
    }

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

    .menu-toggle {
        display: flex;
    }

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

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

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* Features 2x2 becomes 1 column on mobile */
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Team grid becomes 1 column on mobile */
    .team-grid {
        grid-template-columns: 1fr;
    }

    /* Footer grid stacks on mobile */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-social .social-links {
        justify-content: center;
    }

    .stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-item {
        min-width: 100px;
    }

    /* Why ZEVO grid 1 column on mobile */
    .why-grid {
        grid-template-columns: 1fr;
    }

    .koala {
        top: -80px;
        width: clamp(80px, 20vw, 120px);
    }

    .zevo-letter {
        font-size: clamp(50px, 12vw, 120px);
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Stars Background for Physics Landing */
.physics-landing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(3px 3px at 20px 30px, rgba(168, 192, 255, 0.6), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(125, 232, 192, 0.5), transparent),
        radial-gradient(2px 2px at 90px 40px, rgba(255, 255, 255, 0.5), transparent),
        radial-gradient(3px 3px at 130px 80px, rgba(32, 201, 151, 0.5), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(92, 184, 92, 0.5), transparent),
        radial-gradient(2px 2px at 180px 50px, rgba(69, 88, 204, 0.4), transparent);
    background-size: 200px 200px;
    animation: twinkle 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }
}

/* Glow effect for physics objects */
.physics-glow {
    filter: drop-shadow(0 0 25px rgba(32, 201, 151, 0.7)) drop-shadow(0 0 50px rgba(92, 184, 92, 0.4));
}