/* style.css - MAIN STYLESHEET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    background-color: #fefefe;
    color: #333;
    line-height: 1.6;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, #1a472a 0%, #2d5a27 100%);
    color: white;
    padding: 2rem 0;
    text-align: center;
    border-bottom: 5px solid #d4af37;
}
header h1 {
    font-size: 2.8rem;
    margin-bottom: 0.5rem;
}
.tagline {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}
.last-update {
    background: rgba(255,255,255,0.15);
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    margin-top: 1rem;
}

/* Section Titles */
.section-title {
    font-size: 1.8rem;
    color: #1a472a;
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

/* Rate Cards */
.cards-container {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    justify-content: center;
    margin: 2rem 0;
}
.card {
    flex: 1;
    min-width: 250px;
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 6px solid;
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}
.card-24k { border-color: #ffd700; }
.card-22k { border-color: #d4af37; }
.card-18k { border-color: #b8860b; }
.card h3 {
    font-size: 1.5rem;
    color: #222;
    margin-bottom: 1rem;
}
.price {
    font-size: 2.8rem;
    font-weight: bold;
    color: #1a472a;
    margin: 1rem 0;
}
.purity {
    color: #666;
    font-style: italic;
}
.disclaimer {
    text-align: center;
    color: #777;
    font-size: 0.95rem;
    margin-top: 1rem;
}

/* Chart Section */
.chart-container {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    margin: 2rem 0;
}
.chart-controls {
    text-align: center;
    margin: 1.5rem 0;
}
.btn-chart, .btn-admin {
    display: inline-block;
    background: #2d5a27;
    color: white;
    padding: 0.8rem 1.8rem;
    margin: 0 0.5rem;
    border-radius: 8px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}
.btn-chart:hover, .btn-admin:hover { background: #1a472a; }
.btn-admin { background: #555; }

/* History Table */
.table-container {
    overflow-x: auto;
    margin: 2rem 0;
}
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border-radius: 10px;
    overflow: hidden;
}
thead {
    background: #1a472a;
    color: white;
}
th, td {
    padding: 1rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid #eee;
}
tbody tr:nth-child(even) { background: #f9f9f9; }
tbody tr:hover { background: #f1f8e9; }

/* Footer */
footer {
    background: #222;
    color: #aaa;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}
.footer-note {
    font-size: 0.9rem;
    color: #888;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 { font-size: 2.2rem; }
    .cards-container { flex-direction: column; align-items: center; }
    .card { width: 100%; max-width: 350px; }
    .price { font-size: 2.2rem; }
    .section-title { font-size: 1.5rem; }
    th, td { padding: 0.8rem 1rem; }
}