:root {
    --bg-dark:       #121316;
    --card-bg:       #1c1d22;
    --card-hover:    #23252a;
    --text-main:     #f0f0f4;
    --text-muted:    #82838c;
    --accent-blue:   #5d9cec;
    --accent-orange: #e07455;
    --accent-green:  #3ab07a;
    --border:        rgba(255, 255, 255, 0.07);
    --font-stack:    'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont,
                     system-ui, 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
    --transition:    all 0.18s ease;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-stack);
    height: 100vh;
    overflow: hidden;
}

/* ── Loading / Denied ───────────────────────────────────────────────── */
#loading-screen {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background-color: var(--bg-dark);
    z-index: 100;
    color: var(--text-muted);
    font-size: 15px;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--text-main);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#access-denied {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-dark);
}

.access-denied-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 360px;
}

.access-denied-card i {
    font-size: 48px;
    color: var(--accent-orange);
}

.access-denied-card h2 {
    font-size: 20px;
    font-weight: 700;
}

.access-denied-card p {
    font-size: 14px;
    color: var(--text-muted);
}

.btn-back {
    margin-top: 8px;
    background-color: rgba(255,255,255,0.08);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 10px 20px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-back:hover { background-color: rgba(255,255,255,0.13); }

/* ── Admin Layout ───────────────────────────────────────────────────── */
#admin-app {
    display: flex;
    height: 100vh;
}

.admin-sidebar {
    width: 240px;
    background-color: var(--bg-dark);
    border-right: 1px solid var(--border);
    padding: 32px 20px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.admin-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 8px;
    margin-bottom: 40px;
}

.admin-logo .logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

.admin-logo span {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    background: none;
    font-family: inherit;
    width: 100%;
    text-align: left;
}

.admin-nav-item i {
    font-size: 17px;
    flex-shrink: 0;
}

.admin-nav-item:hover,
.admin-nav-item.active {
    color: var(--text-main);
    background-color: rgba(255,255,255,0.05);
}

.admin-nav-item.active {
    background-color: rgba(255,255,255,0.06);
}

.badge-count {
    margin-left: auto;
    background-color: var(--accent-orange);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.admin-nav-bottom {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* ── Admin Main ─────────────────────────────────────────────────────── */
.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 32px 40px 24px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.admin-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.admin-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.admin-user-info {
    font-size: 13px;
    color: var(--text-muted);
    padding-top: 4px;
}

/* ── Sections ───────────────────────────────────────────────────────── */
.admin-section {
    flex: 1;
    overflow-y: auto;
    padding: 24px 40px 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.filter-row {
    display: flex;
    gap: 8px;
}

.filter-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 7px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover { color: var(--text-main); }

.filter-btn.active {
    border-color: rgba(255,255,255,0.2);
    color: var(--text-main);
    background-color: rgba(255,255,255,0.06);
}

.admin-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

/* ── List Rows ─────────────────────────────────────────────────────── */
.list-header {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 0.8fr 1.4fr;
    gap: 12px;
    padding: 12px 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.list-row {
    display: grid;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    align-items: center;
    transition: var(--transition);
}

.list-row:last-child { border-bottom: none; }
.list-row:hover { background-color: rgba(255,255,255,0.02); }

.request-row {
    grid-template-columns: 1.8fr 1fr 1.4fr 0.8fr 1.4fr;
}

.user-row {
    grid-template-columns: 1.8fr 1fr 1fr 0.8fr 1.4fr;
}

.row-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 2px;
}

.row-email {
    font-size: 12px;
    color: var(--text-muted);
}

.row-time {
    font-size: 12px;
    color: var(--text-muted);
}

.row-credits {
    font-size: 14px;
    color: var(--text-muted);
}

.row-credits strong {
    color: var(--accent-orange);
    font-size: 16px;
}

.reviewed-at {
    font-size: 12px;
    color: var(--text-muted);
}

.row-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* ── Status / Plan / Role Badges ────────────────────────────────────── */
.status-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
}

.status-pending {
    background-color: rgba(224, 116, 85, 0.12);
    color: var(--accent-orange);
    border: 1px solid rgba(224, 116, 85, 0.25);
}

.status-approved {
    background-color: rgba(58, 176, 122, 0.12);
    color: var(--accent-green);
    border: 1px solid rgba(58, 176, 122, 0.25);
}

.status-rejected {
    background-color: rgba(255,255,255,0.05);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.plan-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
}

.plan-free    { background: rgba(255,255,255,0.05); color: var(--text-muted); }
.plan-basic   { background: rgba(93,156,236,0.12);  color: var(--accent-blue);   border: 1px solid rgba(93,156,236,0.25); }
.plan-premium { background: rgba(224,116,85,0.12);  color: var(--accent-orange); border: 1px solid rgba(224,116,85,0.25); }

.role-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
}

.role-admin { background: rgba(224,116,85,0.12); color: var(--accent-orange); }
.role-user  { background: rgba(255,255,255,0.05); color: var(--text-muted); }

/* ── Action Buttons ─────────────────────────────────────────────────── */
.btn-approve,
.btn-reject {
    display: flex;
    align-items: center;
    gap: 5px;
    border: 1px solid;
    border-radius: 8px;
    padding: 7px 12px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-approve {
    background-color: rgba(58,176,122,0.1);
    border-color: rgba(58,176,122,0.3);
    color: var(--accent-green);
}

.btn-approve:hover:not(:disabled) {
    background-color: rgba(58,176,122,0.2);
}

.btn-reject {
    background-color: rgba(255,255,255,0.04);
    border-color: var(--border);
    color: var(--text-muted);
}

.btn-reject:hover:not(:disabled) {
    background-color: rgba(255,255,255,0.08);
    color: var(--text-main);
}

.btn-approve:disabled,
.btn-reject:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Credit adjust */
.credit-adjust {
    display: flex;
    gap: 6px;
    align-items: center;
}

.credit-input {
    background-color: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-family: inherit;
    font-size: 13px;
    padding: 7px 10px;
    border-radius: 8px;
    width: 72px;
    outline: none;
    transition: var(--transition);
}

.credit-input:focus {
    border-color: rgba(255,255,255,0.2);
}

.credit-input::placeholder { color: var(--text-muted); }

.btn-adjust {
    background-color: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 7px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-adjust:hover:not(:disabled) { background-color: rgba(255,255,255,0.1); }
.btn-adjust:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Empty / Loading ────────────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px;
    gap: 12px;
    color: var(--text-muted);
}

.empty-state i { font-size: 36px; }
.empty-state p { font-size: 14px; }
.empty-state.error { color: var(--accent-orange); }

.loading-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 32px;
    color: var(--text-muted);
    font-size: 14px;
}

/* ── Toast ──────────────────────────────────────────────────────────── */
.admin-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-size: 14px;
    font-weight: 500;
    padding: 12px 24px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
    white-space: nowrap;
    z-index: 999;
}

.admin-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.admin-toast.success { border-color: rgba(58,176,122,0.4); color: var(--accent-green); }
.admin-toast.error   { border-color: rgba(224,116,85,0.4); color: var(--accent-orange); }
.admin-toast.info    { border-color: rgba(93,156,236,0.4); color: var(--accent-blue); }

/* ── Credit Config ─────────────────────────────────────────────────── */
.credit-config-card { max-width: 560px; }

.credit-config-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.credit-config-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.credit-config-label {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
}

.credit-config-label i { font-size: 16px; color: var(--text-muted); }

.credit-config-input {
    width: 80px;
    padding: 8px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    text-align: center;
}

.credit-config-input:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.credit-config-unit {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.credit-config-footer {
    margin-top: 20px;
    display: flex;
    justify-content: flex-end;
}

.btn-save-credits {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--accent-orange);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-save-credits:hover { opacity: 0.85; }
.btn-save-credits:disabled { opacity: 0.5; cursor: not-allowed; }