:root {
    --primary-color: #007AFF;
    --bg-color: #ffffff;
    --text-color: #1d1d1f;
    --secondary-text: #86868b;
    --accent-color: #f5f5f7;
    --card-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #000000;
        --text-color: #f5f5f7;
        --secondary-text: #a1a1a6;
        --accent-color: #1c1c1e;
        --card-bg: rgba(28, 28, 30, 0.8);
        --glass-border: rgba(255, 255, 255, 0.1);
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    overflow-x: hidden;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Glassmorphism Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-link img {
    height: 32px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary-text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    text-align: center;
}

h1 {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-color) 0%, var(--secondary-text) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.5rem;
    color: var(--secondary-text);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 16px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.cta-button:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(0, 122, 255, 0.3);
}

/* Features Section */
.features {
    padding: 80px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--accent-color);
    padding: 40px;
    border-radius: 24px;
    transition: var(--transition);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--secondary-text);
}

/* Footer */
footer {
    padding: 60px 0;
    border-top: 1px solid var(--glass-border);
    margin-top: 80px;
}

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

.copyright {
    color: var(--secondary-text);
    font-size: 0.85rem;
}

/* Forms */
.form-container {
    max-width: 600px;
    margin: 120px auto;
    padding: 40px;
    background: var(--accent-color);
    border-radius: 32px;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
}

input, textarea {
    width: 100%;
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

.submit-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: #0062cc;
}

/* Privacy Page */
.content-page {
    padding: 120px 0 80px;
}

.content-page h2 {
    margin-bottom: 2rem;
}

.content-page p, .content-page ul {
    margin-bottom: 1.5rem;
    color: var(--secondary-text);
}

.content-page ul {
    padding-left: 1.5rem;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.2rem; }
    .footer-content { flex-direction: column; gap: 20px; text-align: center; }
}