:root {
    --primary: #f1c40f;
    --primary-dark: #d4ac0d;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --glass: rgba(30, 41, 59, 0.7);
    --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-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
header {
    padding: 1.5rem 0;
    backdrop-filter: blur(10px);
    background: var(--glass);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero & Dashboard */
.hero {
    padding: 4rem 0;
    text-align: center;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--primary), #fff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.live-price-widget {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1.5rem;
    padding: 2rem;
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.price-card {
    background: rgba(255,255,255,0.03);
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.3s;
}

.price-card:hover {
    transform: translateY(-5px);
}

.price-card h3 {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.price-card .value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

/* Calculator & Charts */
.tool-section {
    padding: 4rem 0;
}

.calculator-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1.5rem;
    padding: 2.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

input, select {
    width: 100%;
    padding: 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-size: 1rem;
}

.btn-primary {
    width: 100%;
    background: var(--primary);
    color: var(--bg-dark);
    padding: 1rem;
    border: none;
    border-radius: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s;
}

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

/* Footer */
footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border);
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: #fff;
}

/* Responsive */
@media (max-width: 768px) {
    .live-price-widget {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 2rem;
    }
}