/* Theme Variables - Deep Ocean & Vitality Red */
:root {
    --primary: #0f172a; /* slate-900 */
    --primary-light: #334155; /* slate-700 */
    --accent: #dc2626; /* red-600 */
    --accent-hover: #b91c1c; /* red-700 */
    --bg-light: #f8fafc; /* slate-50 */
    --text-main: #1e293b;
    --text-muted: #64748b;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
}

/* Animations */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

/* Custom Components */
.btn-primary {
    background-color: var(--accent);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.nav-link {
    position: relative;
    color: #e2e8f0;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: white;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

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

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: 2rem;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 10px auto 0;
    border-radius: 2px;
}

/* Hero Gradient */
.hero-bg {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(226, 232, 240, 0.8);
}