:root {
    --bg: #0a0a0b;
    --text: #fafafa;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --muted: #71717a;
    --card-bg: #111113;
    --border: #27272a;
    --success: #22c55e;
    --error: #ef4444;
    --nav-height: 64px;
    --cookie-h: 0px;
}

[data-theme="light"] {
    --bg: #fafafa;
    --text: #0a0a0b;
    --card-bg: #ffffff;
    --border: #e4e4e7;
    --muted: #71717a;
}

.skip-link {
    position: absolute; top: -40px; left: 0;
    background: var(--accent); color: white;
    padding: 8px 16px; text-decoration: none;
    font-weight: 600; z-index: 1000; transition: top 0.2s;
}
.skip-link:focus { top: 0; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px; border-radius: 4px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg); color: var(--text);
    min-height: 100vh; line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

body::before {
    content: ''; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 25% 25%, rgba(168, 85, 247, 0.02) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(99, 102, 241, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none; z-index: -1;
}

nav {
    position: fixed; top: 0; left: 0; right: 0;
    display: flex; justify-content: space-between;
    align-items: center; padding: 1.25rem 3rem;
    background: rgba(10, 10, 11, 0.9);
    backdrop-filter: blur(10px); z-index: 100;
    height: var(--nav-height);
    transition: background 0.3s;
}

[data-theme="light"] nav { background: rgba(250, 250, 250, 0.9); }

.logo { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; cursor: pointer; }
.logo:hover { transform: scale(1.05); }
.logo span { color: var(--accent); transition: transform 0.2s; }
.logo:hover span { transform: scale(1.1); }

.nav-right { display: flex; align-items: center; gap: 1.5rem; }

.nav-links { display: flex; gap: 2.5rem; list-style: none; align-items: center; }

.nav-links a {
    color: var(--muted); text-decoration: none;
    font-size: 0.875rem; font-weight: 500;
    transition: color 0.2s; position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0%; height: 2px;
    background: linear-gradient(90deg, var(--accent), #a855f7);
    transition: width 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active { font-weight: 600; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-social { display: flex; gap: 1rem; align-items: center; }
.nav-social a { color: var(--muted); transition: color 0.2s; display: flex; }
.nav-social a:hover { color: var(--text); }
.nav-social svg { width: 20px; height: 20px; }

.theme-toggle {
    background: none; border: 1px solid var(--border);
    border-radius: 8px; padding: 6px; cursor: pointer;
    color: var(--muted); display: flex; transition: color 0.2s, border-color 0.2s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }

.hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer;
    padding: 4px; z-index: 101;
}
.hamburger span {
    display: block; width: 24px; height: 2px;
    background: var(--text); border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
    display: none; position: fixed; top: var(--nav-height);
    left: 0; right: 0; background: rgba(10, 10, 11, 0.98);
    backdrop-filter: blur(10px); padding: 2rem; z-index: 99;
    flex-direction: column; gap: 1.5rem;
    border-bottom: 1px solid var(--border);
}
.mobile-menu.active { display: flex; }
.mobile-menu a { color: var(--muted); text-decoration: none; font-size: 1.125rem; font-weight: 500; padding: 0.5rem 0; transition: color 0.2s; }
.mobile-menu a:hover, .mobile-menu a.active { color: var(--text); }
.mobile-menu .mobile-social { display: flex; gap: 1.5rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.mobile-menu .mobile-social a { color: var(--muted); display: flex; padding: 0; }
.mobile-menu .mobile-social a:hover { color: var(--text); }
.mobile-menu .mobile-social svg { width: 24px; height: 24px; }

section { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 6rem 2rem; }

.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }

#hero { text-align: center; }
.hero-content { max-width: 800px; }

h1 { font-size: clamp(3rem, 12vw, 7rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1; margin-bottom: 1.5rem; }
h1 span { background: linear-gradient(135deg, var(--accent), #a855f7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; background-size: 200% 200%; animation: gradientShift 5s ease infinite; }
@keyframes gradientShift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }

.subtitle { font-size: 1.25rem; color: var(--muted); margin-bottom: 2rem; }

.scroll-indicator {
    position: absolute; bottom: 2rem; display: flex; flex-direction: column;
    align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.75rem;
    animation: bounce 2s infinite, pulse 3s ease-in-out infinite; opacity: 0.9;
    transition: opacity 0.3s;
}
.scroll-indicator.hidden { opacity: 0; pointer-events: none; }
.scroll-indicator svg { animation: bounce 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 0.7; } 50% { opacity: 1; } }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(10px); } }

#mission { background: linear-gradient(180deg, var(--bg) 0%, var(--card-bg) 100%); }
.section-content { max-width: 800px; text-align: center; }
.section-label { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
h2 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 2rem; }
.mission-text { font-size: 1.125rem; color: var(--muted); line-height: 1.9; margin-bottom: 1.5rem; }
.founders { display: flex; align-items: center; justify-content: center; gap: 0.75rem; margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.founders-icon { width: 40px; height: 40px; background: linear-gradient(135deg, var(--accent), #a855f7); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: transform 0.3s, box-shadow 0.3s; }
.founders-icon:hover { transform: scale(1.1); box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3); }
.founders-icon svg { width: 20px; height: 20px; color: white; }
.founders span { font-weight: 600; }

#values { background: var(--card-bg); }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; max-width: 900px; width: 100%; margin-top: 3rem; }
.value-card { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; text-align: center; transition: border-color 0.3s, transform 0.3s; }
.value-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.value-icon { font-size: 2.5rem; margin-bottom: 1rem; display: block; transition: transform 0.3s; }
.value-card:hover .value-icon { transform: scale(1.1); }
.value-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.value-card p { font-size: 0.875rem; color: var(--muted); }

#testimonials { background: var(--bg); }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; max-width: 900px; width: 100%; margin-top: 3rem; }
.testimonial-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; transition: border-color 0.3s, transform 0.3s; }
.testimonial-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.testimonial-text { font-size: 1rem; color: var(--text); line-height: 1.7; margin-bottom: 1.5rem; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.testimonial-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), #a855f7); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 0.875rem; }
.testimonial-name { font-weight: 600; font-size: 0.875rem; }
.testimonial-role { font-size: 0.75rem; color: var(--muted); }

#about { text-align: center; }
.about-box { background: var(--card-bg); border: 1px solid var(--border); border-radius: 24px; padding: 3rem; max-width: 700px; transition: background 0.3s; }
.about-box p { font-size: 1.125rem; color: var(--muted); line-height: 1.9; }
.about-box strong { color: var(--text); }

#projects { background: var(--bg); }
.coming-soon { text-align: center; padding: 4rem 2rem; background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; margin: 2rem 0; transition: all 0.3s; max-width: 600px; }
.coming-soon:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2); }
.coming-soon-icon { font-size: 3rem; margin-bottom: 1.5rem; display: block; transition: transform 0.3s; }
.coming-soon:hover .coming-soon-icon { transform: scale(1.1) rotate(5deg); }
.coming-soon h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.coming-soon p { color: var(--muted); font-size: 1.125rem; max-width: 600px; margin: 0 auto; line-height: 1.6; }

#newsletter { background: linear-gradient(180deg, var(--bg) 0%, var(--card-bg) 100%); }
.newsletter-box { background: var(--card-bg); border: 1px solid var(--border); border-radius: 24px; padding: 3rem; max-width: 600px; text-align: center; transition: background 0.3s; }
.newsletter-form { display: flex; gap: 0.75rem; margin-top: 2rem; }
.newsletter-input { flex: 1; padding: 0.875rem 1.25rem; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 1rem; font-family: inherit; transition: border-color 0.2s, background 0.3s; }
.newsletter-input::placeholder { color: var(--muted); }
.newsletter-input:focus { outline: none; border-color: var(--accent); }
.newsletter-btn { padding: 0.875rem 1.5rem; background: var(--accent); color: white; border: none; border-radius: 8px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: background 0.2s, transform 0.2s; white-space: nowrap; }
.newsletter-btn:hover { background: var(--accent-hover); transform: translateY(-2px); }
.newsletter-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.newsletter-success { display: none; align-items: center; gap: 0.5rem; color: var(--success); font-weight: 500; margin-top: 1rem; justify-content: center; }
.newsletter-success.show { display: flex; }
.newsletter-error { display: none; color: var(--error); font-size: 0.875rem; margin-top: 0.5rem; }
.newsletter-error.show { display: block; }

#cta { background: linear-gradient(180deg, var(--card-bg) 0%, var(--bg) 100%); }
.cta-box { text-align: center; }
.cta-box h2 { margin-bottom: 1rem; }
.cta-box p { color: var(--muted); margin-bottom: 2rem; font-size: 1.125rem; }
.cta-button { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--accent); color: white; padding: 1rem 2rem; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 1rem; transition: background 0.2s, transform 0.2s; position: relative; overflow: hidden; }
.cta-button::after { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%); transform: rotate(30deg); transition: transform 0.5s; opacity: 0; }
.cta-button:hover::after { opacity: 1; transform: rotate(30deg) translate(50%, 50%); }
.cta-button:hover { background: var(--accent-hover); transform: translateY(-2px); }
.cta-button svg { width: 20px; height: 20px; }
.cta-button.secondary { background: transparent; color: var(--accent); border: 2px solid var(--accent); }
.cta-button.secondary:hover { background: var(--accent); color: white; }
.cta-buttons { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; margin-top: 2rem; }
.cta-subtext { font-size: 1.1rem; color: var(--muted); margin-top: 1.5rem; max-width: 600px; text-align: center; }
.section-subtext { font-size: 1.1rem; color: var(--muted); max-width: 600px; margin: 0 auto 2.5rem auto; }

#contact { background: var(--bg); }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; max-width: 800px; width: 100%; margin-top: 2rem; }
.contact-form { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 0.5rem; color: var(--text); }
.form-group input, .form-group textarea { width: 100%; padding: 0.875rem 1rem; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 1rem; font-family: inherit; transition: border-color 0.2s; resize: vertical; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }
.form-submit { width: 100%; padding: 1rem; background: var(--accent); color: white; border: none; border-radius: 8px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: background 0.2s, transform 0.2s; }
.form-submit:hover { background: var(--accent-hover); transform: translateY(-2px); }
.form-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.contact-success { display: none; align-items: center; gap: 0.5rem; color: var(--success); font-weight: 500; justify-content: center; padding: 1rem; }
.contact-success.show { display: flex; }

.back-to-top { position: fixed; bottom: 2rem; right: 2rem; width: 48px; height: 48px; background: var(--accent); color: white; border: none; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.3s, transform 0.3s, background 0.2s; z-index: 50; box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4); }
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: var(--accent-hover); transform: translateY(-2px); }
.back-to-top svg { width: 24px; height: 24px; }

footer { text-align: center; padding: 2rem; color: var(--muted); font-size: 0.75rem; border-top: 1px solid var(--border); }
.footer-social { display: flex; gap: 1.5rem; justify-content: center; margin-bottom: 1rem; }
.footer-social a { color: var(--muted); transition: color 0.2s; display: flex; }
.footer-social a:hover { color: var(--text); }
.footer-social svg { width: 20px; height: 20px; }

.cookie-banner {
    position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--card-bg); border-top: 1px solid var(--border);
    padding: 1.25rem 2rem; display: flex;
    align-items: center; justify-content: space-between;
    gap: 1.5rem; z-index: 200;
    transform: translateY(100%);
    transition: transform 0.4s ease;
    flex-wrap: wrap;
}
.cookie-banner.show { transform: translateY(0); }
.cookie-banner p { font-size: 0.875rem; color: var(--muted); flex: 1; min-width: 250px; }
.cookie-banner p a { color: var(--accent); }
.cookie-btns { display: flex; gap: 0.75rem; flex-shrink: 0; }
.cookie-btn { padding: 0.625rem 1.25rem; border-radius: 8px; font-weight: 500; font-size: 0.875rem; cursor: pointer; transition: background 0.2s; border: none; }
.cookie-btn.accept { background: var(--accent); color: white; }
.cookie-btn.accept:hover { background: var(--accent-hover); }
.cookie-btn.decline { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.cookie-btn.decline:hover { color: var(--text); border-color: var(--text); }

@media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links, .nav-social, .theme-toggle { display: none; }
    .hamburger { display: flex; }
    section { padding: 4rem 1.5rem; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr; }
    .newsletter-form { flex-direction: column; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .contact-grid { grid-template-columns: 1fr; }
    .cookie-banner { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .values-grid { grid-template-columns: 1fr; }
    .about-box, .newsletter-box { padding: 2rem 1.5rem; }
}