:root {
    --ink: #121014;
    --muted: #6b6671;
    --accent: #2d6cdf;
    --accent-dark: #1b4ea6;
    --danger: #d93036;
    --surface: #f7f5fb;
    --line: #e2deea;
}

* {
    box-sizing: border-box;
}

body.admin {
    margin: 0;
    font-family: "Segoe UI", "Gill Sans", "Calibri", sans-serif;
    color: var(--ink);
    background: linear-gradient(160deg, #f1f0ff, #f9f6fb);
    min-height: 100vh;
}

.admin-grid {
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgba(45, 108, 223, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 108, 223, 0.08) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
}

.admin-header {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 8%;
}

.admin-nav a {
    margin-left: 16px;
    text-decoration: none;
    color: var(--ink);
    font-weight: 600;
}

.admin-page {
    position: relative;
    z-index: 1;
    padding: 20px 8% 60px;
    animation: fadeUp 0.5s ease;
}

.admin-hero {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
    justify-content: space-between;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
}

.stat-card {
    background: #fff;
    border-radius: 18px;
    padding: 16px;
    border: 1px solid var(--line);
}

.panel {
    margin-top: 24px;
    background: #fff;
    border-radius: 20px;
    border: 1px solid var(--line);
    padding: 20px;
}

.panel.danger {
    border-color: rgba(217, 48, 54, 0.4);
    background: #fff2f2;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.panel-body {
    margin-top: 16px;
    display: grid;
    gap: 12px;
}

.import-box {
    margin-bottom: 10px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #f8fbff;
}

.export-box {
    margin-bottom: 10px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #f9f7ff;
}

.export-box #export-json {
    font-family: Consolas, "Courier New", monospace;
    font-size: 12px;
}

.import-box h3 {
    margin: 0;
    font-size: 16px;
}

.json-example {
    margin: 8px 0;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #dbe6fb;
    background: #ffffff;
    font-size: 12px;
    line-height: 1.45;
    overflow: auto;
}

.import-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.list-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}

.list-row:last-child {
    border-bottom: none;
}

.row-actions a {
    margin-left: 12px;
    text-decoration: none;
    color: var(--accent-dark);
    font-weight: 600;
}

.row-actions .danger {
    color: var(--danger);
}

.search-bar {
    margin-top: 12px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.form-grid {
    display: grid;
    gap: 12px;
    max-width: 520px;
}

.link-card {
    margin-top: 14px;
    margin-bottom: 16px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #f8fbff;
}

.link-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.link-row .text-input {
    flex: 1 1 360px;
}

.success-panel {
    max-width: 860px;
}

.action-row {
    margin-top: 18px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.qr-section {
    margin-top: 16px;
    width: 170px;
    height: 170px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
}

.qr-section img {
    max-width: 150px;
    max-height: 150px;
}

.text-input, .text-area {
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    font-size: 15px;
}

.text-area {
    resize: vertical;
}

.primary-btn, .ghost-btn, .danger-btn {
    padding: 10px 20px;
    border-radius: 24px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
}

.primary-btn {
    background: var(--accent);
    color: #fff;
}

.ghost-btn {
    border: 1px solid var(--line);
    color: var(--ink);
    background: transparent;
}

.danger-btn {
    background: var(--danger);
    color: #fff;
}

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

.auth-panel {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 24px;
}

.auth-card {
    background: #fff;
    border-radius: 22px;
    padding: 28px;
    border: 1px solid var(--line);
    width: min(420px, 90vw);
}

.form-error {
    background: #fff1f2;
    color: #8d1a22;
    padding: 10px 12px;
    border-radius: 10px;
    margin-bottom: 12px;
    border: 1px solid rgba(217, 48, 54, 0.4);
}

.qr-block img {
    max-width: 100%;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 720px) {
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .list-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .link-row .text-input {
        flex-basis: 100%;
    }
}