:root {
    --gold: #d4af37;
    --gold-hover: #b5952f;
    --black: #121212;
    --dark-grey: #1e1e1e;
    --light-grey: #2c2c2c;
    --text: #e0e0e0;
    --danger: #dc3545;
    --success: #28a745;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* --- 1. RESET & BASE --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--black);
    color: var(--text);
    font-family: var(--font-stack);
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 480px; /* Optimal Mobile Width */
}

/* --- 2. TYPOGRAPHY --- */
h1 {
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: 10px;
    border-bottom: 2px solid var(--gold);
    padding-bottom: 15px;
}

.subtitle {
    text-align: center;
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

/* --- 3. FORMS (The Input Machine) --- */
form {
    background: var(--dark-grey);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    border: 1px solid #333;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--gold);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
}

input, select, textarea {
    width: 100%;
    padding: 16px;
    margin-bottom: 24px;
    background: var(--light-grey);
    border: 1px solid #444;
    color: white;
    border-radius: 8px;
    font-size: 16px; /* Prevents zoom on iPhone */
    transition: border-color 0.2s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--gold);
}

/* --- 4. INTERACTIVE ELEMENTS --- */
button {
    width: 100%;
    padding: 18px;
    background: var(--gold);
    border: none;
    border-radius: 8px;
    color: var(--black);
    font-weight: 800;
    font-size: 1.1rem;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.1s, background-color 0.2s;
}

button:hover { background: var(--gold-hover); }
button:active { transform: scale(0.98); }

/* --- 5. ADMIN DASHBOARD --- */
.appointment-card {
    background: var(--dark-grey);
    border-left: 4px solid var(--gold);
    padding: 15px;
    margin-bottom: 12px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-info { flex-grow: 1; }
.card-time { font-weight: bold; font-size: 1.1em; color: white; display: block; margin-bottom: 4px; }
.card-name { color: var(--gold); }
.card-details { font-size: 0.85em; color: #aaa; }

.btn-delete {
    background: var(--danger);
    color: white;
    width: auto;
    padding: 8px 12px;
    font-size: 0.9rem;
    margin-left: 10px;
}

/* --- 6. UTILITIES --- */
.success-msg {
    background: rgba(40, 167, 69, 0.2);
    border: 1px solid var(--success);
    color: #d4edda;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 20px;
}