:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --accent: #f97316;
    --accent-hover: #ea580c;
    --white: #FFFFFF;
    --bg: #f8fafc;
    --bg-card: #FFFFFF;
    --text-dark: #0f172a;
    --text-body: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-hover: 0 10px 25px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.05);
    --radius: 12px;
}

.dark {
    --white: #0f172a;
    --bg: #020617;
    --bg-card: #1e293b;
    --text-dark: #f1f5f9;
    --text-body: #94a3b8;
    --text-light: #64748b;
    --border: #334155;
    --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --shadow-hover: 0 10px 25px rgba(0,0,0,0.4), 0 4px 10px rgba(0,0,0,0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text-body);
    line-height: 1.6;
}
body.menu-open { overflow: hidden; }
h1, h2, h3, h4 { color: var(--text-dark); font-weight: 600; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Buttons */
.btn {
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary { 
    background: var(--primary); 
    color: white; 
}
.btn-primary:hover { 
    background: var(--primary-dark); 
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.4);
    transform: translateY(-1px);
}
.btn-secondary { 
    background: var(--white); 
    color: var(--text-dark); 
    border: 1px solid var(--border); 
}
.btn-secondary:hover { 
    background: var(--bg); 
    border-color: var(--primary);
    color: var(--primary);
}
.btn-orange { 
    background: var(--accent); 
    color: white; 
}
.btn-orange:hover { 
    background: var(--accent-hover); 
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}
.dark nav {
    background: rgba(15, 23, 42, 0.95);
}
nav .container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo img { 
    height: 40px; 
    width: auto;
    object-fit: contain;
}
.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
}
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
    text-decoration: none;
    color: var(--text-body);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 0;
    transition: color 0.2s;
    position: relative;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.2s;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; gap: 12px; align-items: center; }
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-dark);
    cursor: pointer;
}