/* css/style.css */
:root {
    --bg-dark: #0b132b;
    --bg-card: rgba(255, 255, 255, 0.95);
    --primary: #1e3a8a;
    --primary-light: #3b82f6;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border: rgba(226, 232, 240, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Kanit', 'Prompt', sans-serif, system-ui;
}

body {
    background-color: #0f172a;
    background-image: 
        radial-gradient(at 0% 0%, rgba(30, 58, 138, 0.5) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.3) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.9) 0px, transparent 100%);
    background-attachment: fixed;
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header & Navbar */
header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: var(--secondary);
}

.hotline-btn {
    background: rgba(6, 182, 212, 0.15);
    color: var(--secondary);
    padding: 8px 18px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid var(--secondary);
    transition: all 0.3s ease;
}

.hotline-btn:hover {
    background: var(--secondary);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

/* Hero Section Background Mesh */
.hero {
    position: relative;
    padding: 6rem 0 5rem;
    text-align: center;
    color: #ffffff;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.6) 0%, rgba(15, 23, 42, 0.95) 100%),
                radial-gradient(circle at 50% 20%, rgba(59, 130, 246, 0.25), transparent 70%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: #94a3b8;
    max-width: 750px;
    margin: 0 auto 2rem;
}

/* Pricing Grid & Glassmorphism Cards */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.price-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.price-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(6, 182, 212, 0.25);
}

.price-card.popular {
    border: 2px solid var(--secondary);
}

.badge-popular {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    color: #ffffff;
    padding: 4px 18px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(6, 182, 212, 0.4);
}

.price-amount {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
    margin: 1rem 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
    color: #ffffff;
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    box-shadow: 0 6px 18px rgba(30, 58, 138, 0.5);
}

/* Form Container */
.form-card {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    font-size: 1rem;
    background: #f8fafc;
    transition: border 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .nav-bar { flex-direction: column; gap: 1rem; }
}