* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #070707;
    --card: rgba(255, 255, 255, 0.08);
    --card-strong: rgba(255, 255, 255, 0.13);
    --gold: #d4af37;
    --gold-light: #ffe08a;
    --text: #ffffff;
    --muted: rgba(255,255,255,0.65);
    --line: rgba(255,255,255,0.15);
    --danger: #dc2626;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(212,175,55,0.22), transparent 35%),
        radial-gradient(circle at bottom right, rgba(255,255,255,0.08), transparent 30%),
        linear-gradient(135deg, #050505, #101010 55%, #080808);
    color: var(--text);
    font-family: Arial, sans-serif;
}

/* 메인 */
header {
    text-align: center;
    padding-top: 120px;
    margin-bottom: 45px;
}

header h1 {
    font-size: 72px;
    letter-spacing: 10px;
    color: var(--gold-light);
    text-shadow: 0 0 25px rgba(212,175,55,0.45);
}

header p {
    margin-top: 12px;
    color: var(--muted);
    letter-spacing: 3px;
}

main {
    display: flex;
    justify-content: center;
}

.button-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.menu-btn {
    width: 280px;
    padding: 17px 20px;
    text-align: center;
    color: var(--text);
    text-decoration: none;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--card);
    backdrop-filter: blur(20px);
    transition: 0.25s;
}

.menu-btn:hover {
    transform: translateY(-3px);
    border-color: var(--gold);
    background: rgba(212,175,55,0.18);
    box-shadow: 0 10px 35px rgba(212,175,55,0.18);
}

/* 로그인 / 예약 폼 */
.auth-container {
    width: min(420px, 90%);
    margin: 90px auto 30px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 26px;
    backdrop-filter: blur(22px);
    box-shadow: 0 25px 80px rgba(0,0,0,0.35);
}

.auth-container h1 {
    text-align: center;
    color: var(--gold-light);
    margin-bottom: 10px;
}

.auth-container input,
.auth-container select,
.auth-container textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--line);
    border-radius: 14px;
    outline: none;
    background: rgba(255,255,255,0.08);
    color: white;
}

.auth-container select option {
    color: black;
}

.auth-container textarea {
    min-height: 110px;
    resize: none;
}

.auth-container button,
.reservation-card button,
.staff-card button {
    padding: 12px 16px;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: black;
    font-weight: bold;
    transition: 0.2s;
}

.auth-container button:hover,
.reservation-card button:hover,
.staff-card button:hover {
    transform: translateY(-2px);
}

#totalPrice {
    color: var(--gold-light);
    font-weight: bold;
}

#message {
    text-align: center;
    color: var(--gold-light);
}

/* 관리자 / 카드 */
.admin-container {
    width: min(500px, 90%);
    margin: 100px auto;
    padding: 35px;
    text-align: center;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 26px;
    backdrop-filter: blur(22px);
}

.admin-container h1 {
    margin-bottom: 25px;
    color: var(--gold-light);
}

.reservation-card,
.staff-card {
    width: min(620px, 92%);
    margin: 22px auto;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--card);
    backdrop-filter: blur(18px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}

.reservation-card h3,
.staff-card h3 {
    color: var(--gold-light);
    margin-bottom: 12px;
}

.reservation-card p,
.staff-card p {
    margin: 8px 0;
    color: var(--muted);
}

.reservation-card button {
    margin-top: 12px;
    margin-right: 8px;
}

button[data-action="delete"] {
    background: var(--danger);
    color: white;
}

/* 페이지 제목 */
body > h1 {
    margin-top: 60px;
    margin-bottom: 30px;
    color: var(--gold-light);
    text-shadow: 0 0 20px rgba(212,175,55,0.25);
}

/* 모바일 */
@media (max-width: 600px) {
    header {
        padding-top: 90px;
    }

    header h1 {
        font-size: 48px;
        letter-spacing: 6px;
    }

    .menu-btn {
        width: 250px;
    }

    .auth-container {
        margin-top: 50px;
        padding: 24px;
    }
}