:root {
    --primary-color: #11B2D5;
    --primary-light: #E6F7FB;
    --primary-dark: #0E8CA8;
    --dark: #0F172A;
    --light: #F8FAFC;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--dark);
    background-color: var(--light);
    line-height: 1.6;
}

.container {
    max-width: 1280px;
}

/* Navigation */
.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #f0f7fa 0%, #e6f7fb 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 70%, rgba(17, 178, 213, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 90% 30%, rgba(17, 178, 213, 0.2) 0%, transparent 50%);
    z-index: 0;
}

/* Cards */
.feature-card {
    background: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(17, 178, 213, 0.1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(17, 178, 213, 0.15);
}

/* Tools Section */
.tool-card {
    background: white;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    border: 1px solid rgba(17, 178, 213, 0.08);
}

.tool-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 36px rgba(17, 178, 213, 0.12);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(17, 178, 213, 0.3);
}

.btn-secondary {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: rgba(17, 178, 213, 0.05);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding-top: 120px;
        padding-bottom: 80px;
    }
}