* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
    background: #f1f5f9;
    color: #0f172a;
}

a {
    color: inherit;
    text-decoration: none;
}

/* 로그인 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 34%),
        linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #0f172a 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.3);
}

.login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background: #1d4ed8;
    color: #ffffff;
    font-weight: 900;
    font-size: 24px;
    margin-bottom: 16px;
}

.login-card h1 {
    margin: 0;
    font-size: 26px;
    letter-spacing: -0.04em;
}

.login-card p {
    margin: 8px 0 24px;
    color: #64748b;
    line-height: 1.5;
}

/* 그리드 / 카드 */
.grid {
    display: grid;
    gap: 18px;
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.panel {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 22px;
    padding: 22px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.card-title {
    font-size: 14px;
    color: #64748b;
    font-weight: 800;
}

.card-value {
    margin-top: 12px;
    font-size: 30px;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.card-desc {
    margin-top: 6px;
    color: #64748b;
    font-size: 14px;
}

/* 안내 박스 */
.notice {
    margin-top: 18px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 22px;
    padding: 22px;
}

.notice h2,
.panel h2 {
    margin: 0 0 12px;
}

.notice ul {
    margin: 0;
    padding-left: 20px;
    color: #475569;
    line-height: 1.8;
}

/* 툴바 */
.admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
}

.admin-toolbar h2 {
    margin: 0;
    font-size: 20px;
    letter-spacing: -0.04em;
}

.admin-toolbar p {
    margin: 6px 0 0;
    color: #64748b;
    font-size: 14px;
}

/* 버튼 */
.btn-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    border: 0;
    border-radius: 12px;
    padding: 0 16px;
    font-weight: 800;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #1d4ed8;
    color: #ffffff;
}

.btn-primary:hover {
    background: #1e40af;
}

.btn-dark {
    background: #0f172a;
    color: #ffffff;
}

.btn-light {
    background: #f8fafc;
    color: #334155;
    border: 1px solid #cbd5e1;
}

.btn-danger {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

/* 폼 */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 14px;
    font-weight: 800;
    color: #334155;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    border: 1px solid #cbd5e1;
    border-radius: 14px;
    padding: 0 14px;
    font-size: 15px;
    outline: none;
    background: #ffffff;
}

.form-input,
.form-select {
    height: 46px;
}

.form-textarea {
    min-height: 110px;
    padding-top: 12px;
    resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.form-checks {
    display: grid;
    gap: 8px;
}

.form-checks label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: #334155;
}

/* 알림 */
.alert {
    border-radius: 14px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 1.5;
}

.alert-danger {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

/* 테이블 */
.table-wrap {
    overflow-x: auto;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 18px;
}

.admin-table {
    width: 100%;
    min-width: 900px;
    border-collapse: collapse;
    font-size: 14px;
}

.admin-table th {
    background: #f8fafc;
    color: #64748b;
    text-align: left;
    padding: 13px 14px;
    font-size: 12px;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.admin-table td {
    border-top: 1px solid #e2e8f0;
    padding: 13px 14px;
    color: #334155;
    vertical-align: top;
}

.admin-table tr:hover td {
    background: #f8fafc;
}

/* 배지 */
.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 5px 9px;
    font-size: 12px;
    font-weight: 900;
    border: 1px solid #cbd5e1;
    background: #f8fafc;
    color: #334155;
    white-space: nowrap;
}

.badge-blue {
    border-color: #bfdbfe;
    background: #eff6ff;
    color: #1d4ed8;
}

.badge-green {
    border-color: #bbf7d0;
    background: #f0fdf4;
    color: #15803d;
}

.badge-red {
    border-color: #fecaca;
    background: #fef2f2;
    color: #b91c1c;
}

.badge-gray {
    border-color: #e2e8f0;
    background: #f8fafc;
    color: #475569;
}

.help-text {
    color: #64748b;
    font-size: 13px;
    line-height: 1.6;
    margin-top: 6px;
}

/* 반응형 */
@media (max-width: 900px) {
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .admin-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .grid-4 {
        grid-template-columns: 1fr;
    }
}