:root {
    --gold: #d4af37;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --text: #f8fafc;
    --accent: #3b82f6;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text);
    margin: 0;
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
nav {
    width: 250px;
    background: #020617;
    padding: 20px;
    border-right: 1px solid #334155;
    position: fixed;
    height: 100vh;
    box-sizing: border-box;
}

nav h2 {
    color: var(--gold);
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 30px;
}

nav a {
    display: block;
    color: var(--text);
    text-decoration: none;
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 8px;
    transition: 0.3s;
    cursor: pointer;
}

nav a:hover {
    background: var(--gold);
    color: black;
}

/* Main Content */
main {
    margin-left: 250px;
    padding: 30px;
    width: calc(100% - 250px);
    box-sizing: border-box;
}

.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 25px;
    border-top: 4px solid var(--gold);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Grid System */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

/* Forms */
label {
    display: block;
    margin-top: 15px;
    font-size: 0.85rem;
    color: #94a3b8;
}

input, select {
    width: 100%;
    padding: 12px;
    margin-top: 5px;
    background: #0f172a;
    border: 1px solid #334155;
    color: white;
    border-radius: 8px;
    box-sizing: border-box;
}

input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

/* Buttons */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: 0.2s;
}

.btn-gold {
    background: var(--gold);
    color: black;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
}

th {
    padding: 12px;
    color: #94a3b8;
    border-bottom: 1px solid #334155;
    text-align: left;
}

td {
    padding: 12px;
    border-bottom: 1px solid #1e293b;
}

/* Utils */
.hidden {
    display: none !important;
}

#login-overlay {
    position: fixed;
    inset: 0;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}