:root {
    --bg: #f5f5f5;
    --surface: #ffffff;
    --border: #d9d9d9;
    --border-light: #f0f0f0;
    --text: rgba(0, 0, 0, 0.88);
    --muted: rgba(0, 0, 0, 0.45);
    --primary: #1677ff;
    --primary-hover: #4096ff;
    --primary-active: #0958d9;
    --primary-shadow: rgba(5, 145, 255, 0.1);
    --danger: #ff4d4f;
    --danger-hover: #ff7875;
    --success: #52c41a;
    --error-bg: #fff2f0;
    --error-fg: #cf1322;
    --info-bg: #e6f4ff;
    --info-fg: #0958d9;
    --radius: 6px;
    --radius-lg: 8px;
    --shadow-1: 0 1px 2px 0 rgba(0, 0, 0, 0.03), 0 1px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px 0 rgba(0, 0, 0, 0.02);
    --shadow-2: 0 6px 16px 0 rgba(0, 0, 0, 0.08), 0 3px 6px -4px rgba(0, 0, 0, 0.12), 0 9px 28px 8px rgba(0, 0, 0, 0.05);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5714285714285714;
}

h1:focus { outline: none; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-hover); }

h1 { font-size: 24px; font-weight: 600; margin: 0 0 16px; color: rgba(0, 0, 0, 0.88); }
h2 { font-size: 20px; font-weight: 600; margin: 0 0 12px; color: rgba(0, 0, 0, 0.88); }

.muted { color: var(--muted); }
.small { font-size: 12px; }
.center { text-align: center; }
.grow { flex: 1; }

.brand-header {
    text-align: center;
    margin-bottom: 24px;
}
.brand-header img {
    height: 64px;
    max-width: 100%;
    object-fit: contain;
}

.hero {
    max-width: 720px; margin: 48px auto; padding: 32px;
    background: var(--surface); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1); text-align: center;
}
.form-page {
    max-width: 640px; margin: 32px auto; padding: 16px;
}
.card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-1);
    transition: all 0.3s;
}
.card:hover {
    box-shadow: var(--shadow-2);
}
.card.success { border-color: #b7eb8f; background-color: #f6ffed; }
.card header { margin-bottom: 24px; text-align: center; }
.card header .description { color: var(--muted); margin: 0; }

.steps {
    display: flex; gap: 8px; list-style: none; padding: 0;
    margin: 0 0 24px; counter-reset: step;
}
.steps li {
    flex: 1; padding: 8px; text-align: center;
    background: rgba(0, 0, 0, 0.04); border-radius: var(--radius); color: var(--muted);
    font-size: 14px; counter-increment: step; transition: all 0.3s;
}
.steps li::before { content: counter(step) ". "; }
.steps li.active { background: var(--primary); color: white; font-weight: 600; box-shadow: 0 2px 0 rgba(5, 145, 255, 0.1); }
.steps li.done { background: var(--success); color: white; }

.field { margin-bottom: 24px; }
.field label {
    display: block; font-weight: 500; margin-bottom: 8px; font-size: 14px; color: var(--text);
}
.field label.inline { display: inline-flex; gap: 8px; align-items: center; font-weight: normal; margin-bottom: 0; }
.field .req { color: var(--danger); margin-left: 4px; font-family: SimSun, sans-serif; }
.field small { display: block; color: var(--muted); margin-top: 4px; font-size: 12px; }
.field.readonly .value { padding: 5px 11px; font-weight: 500; background: rgba(0, 0, 0, 0.02); border-radius: var(--radius); border: 1px solid var(--border); }
.field.consent label { font-weight: normal; display: flex; gap: 8px; align-items: flex-start; }

input[type=text], input[type=email], input[type=tel], input[type=number],
input[type=date], input[type=datetime-local], input[type=password], textarea, select {
    width: 100%; padding: 4px 11px; height: 32px;
    border: 1px solid var(--border); border-radius: var(--radius);
    font-size: 14px; background: #ffffff; color: var(--text);
    transition: all 0.2s;
}
textarea { resize: vertical; font-family: inherit; height: auto; min-height: 80px; padding: 8px 11px; }
select { height: 32px; padding: 0 11px; }
input[type=checkbox] { width: 16px; height: 16px; margin-top: 3px; cursor: pointer; accent-color: var(--primary); }

input:hover, textarea:hover, select:hover {
    border-color: var(--primary-hover);
}
input:focus, textarea:focus, select:focus {
    outline: 0;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(5, 145, 255, 0.1);
}
input:disabled, textarea:disabled, select:disabled { 
    background: rgba(0, 0, 0, 0.04); 
    border-color: var(--border);
    color: rgba(0, 0, 0, 0.25);
    cursor: not-allowed; 
}
input:disabled:hover { border-color: var(--border); }

.multi { display: flex; flex-direction: column; gap: 8px; }
.multi label { font-weight: normal; }

button {
    cursor: pointer; font: inherit;
    padding: 4px 15px; height: 32px; border-radius: var(--radius); border: 1px solid var(--border);
    background: #ffffff; color: var(--text); box-shadow: 0 2px 0 rgba(0, 0, 0, 0.02);
    transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
    font-size: 14px; display: inline-flex; align-items: center; justify-content: center;
}
button:hover { color: var(--primary-hover); border-color: var(--primary-hover); }
button.primary {
    background: var(--primary); color: #fff; border-color: var(--primary);
    box-shadow: 0 2px 0 rgba(5, 145, 255, 0.1); text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.12);
}
button.primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
button.primary:active:not(:disabled) { background: var(--primary-active); border-color: var(--primary-active); }
button.primary.small { padding: 0 7px; height: 24px; font-size: 14px; }
button:disabled { opacity: 1; border-color: #d9d9d9; color: rgba(0, 0, 0, 0.25); background: rgba(0, 0, 0, 0.04); box-shadow: none; cursor: not-allowed; }

.link-btn {
    background: transparent; border: none; color: var(--primary);
    padding: 0 8px; height: auto; box-shadow: none; cursor: pointer;
}
.link-btn:hover { color: var(--primary-hover); background: transparent; border: none; }
.link-btn.danger { color: var(--danger); }
.link-btn.danger:hover { color: var(--danger-hover); }

.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row.tight { gap: 8px; }

.alert {
    padding: 8px 15px; border-radius: var(--radius-lg); margin-bottom: 24px;
    font-size: 14px; display: flex; align-items: center; border: 1px solid transparent;
}
.alert.error { background: var(--error-bg); color: var(--text); border-color: #ffccc7; }
.alert.info { background: var(--info-bg); color: var(--text); border-color: #b5f5ec; }

.admin-shell {
    display: grid;
    grid-template-columns: 256px 1fr;
    min-height: 100vh;
}
.admin-nav {
    background: #001529; color: rgba(255, 255, 255, 0.65);
    display: flex; flex-direction: column;
}
.admin-nav .brand {
    height: 64px; padding: 16px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; font-weight: 600;
}
.admin-nav .brand img {
    height: 32px;
}
.admin-nav nav { padding: 16px 0; flex: 1; }
.admin-nav nav a {
    display: block; padding: 12px 24px; color: rgba(255, 255, 255, 0.65);
    transition: all 0.3s;
}
.admin-nav nav a:hover { color: #fff; }
.admin-nav nav a.active { background: #1677ff; color: #fff; }
.admin-nav .admin-user {
    padding: 16px 24px; border-top: 1px solid rgba(0, 0, 0, 0.25);
    font-size: 14px;
}
.admin-nav .admin-user .user-name { margin-bottom: 8px; color: #fff; }
.admin-nav .admin-user .link-btn { color: rgba(255, 255, 255, 0.65); padding: 0; }
.admin-nav .admin-user .link-btn:hover { color: #fff; }

.admin-main { padding: 24px; background: #f5f5f5; }
.admin-page { max-width: 1200px; margin: 0 auto; }

.page-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 16px; margin-bottom: 24px;
}
.page-header.tight { margin-bottom: 16px; }
.page-header h1 { margin: 0; }
.page-header .back {
    display: inline-block; margin-bottom: 8px;
    font-size: 14px; color: var(--muted);
}

table.grid {
    width: 100%; border-collapse: separate; border-spacing: 0; background: var(--surface);
    border: 1px solid var(--border-light); border-radius: var(--radius-lg); overflow: hidden;
}
table.grid th, table.grid td {
    padding: 16px; text-align: left;
    border-bottom: 1px solid var(--border-light); font-size: 14px;
    vertical-align: top;
}
table.grid thead th { background: #fafafa; font-weight: 500; color: rgba(0, 0, 0, 0.88); transition: background 0.3s ease; }
table.grid tr:last-child td { border-bottom: none; }
table.grid tr:hover td { background: #fafafa; }
table.grid.fields input, table.grid.fields select { font-size: 14px; }

.badge {
    display: inline-block; padding: 0 8px; height: 22px; line-height: 20px; border-radius: 4px;
    font-size: 12px; border: 1px solid transparent; background: #fafafa; border-color: #d9d9d9; color: rgba(0, 0, 0, 0.88);
}
.badge.active { background: #f6ffed; border-color: #b7eb8f; color: #389e0d; }
.badge.inactive { background: #fafafa; border-color: #d9d9d9; color: rgba(0, 0, 0, 0.45); }

.empty {
    padding: 48px 32px; text-align: center; color: rgba(0, 0, 0, 0.45);
    background: var(--surface); border: 1px solid var(--border-light); border-radius: var(--radius-lg);
}

code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    font-size: 13px; background: rgba(150, 150, 150, 0.1); padding: 0.2em 0.4em; border-radius: 3px; border: 1px solid rgba(100, 100, 100, 0.2);
}

.sticky-actions {
    position: sticky; bottom: 0;
    background: var(--surface); padding: 16px 24px;
    margin-top: 24px; border-top: 1px solid var(--border-light);
    display: flex; justify-content: flex-end; gap: 8px; box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.login-page {
    min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: #f0f2f5; padding: 16px;
    background-image: url('data:image/svg+xml,%3Csvg width=\'60\' height=\'60\' viewBox=\'0 0 60 60\' xmlns=\'http://www.w3.org/2000/svg\'%3E%3Cg fill=\'none\' fill-rule=\'evenodd\'%3E%3Cg fill=\'#1677ff\' fill-opacity=\'0.05\'%3E%3Cpath d=\'M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z\'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
}
.login-header { margin-bottom: 40px; text-align: center; }
.login-header img { height: 64px; }
.login-card {
    background: var(--surface); border: 1px solid transparent;
    border-radius: var(--radius-lg); padding: 32px;
    width: 100%; max-width: 380px; box-shadow: var(--shadow-2);
}
.login-card h1 { text-align: center; margin-bottom: 24px; font-size: 20px; font-weight: 600; color: rgba(0, 0, 0, 0.88); }
.login-card button.primary { width: 100%; margin-top: 16px; height: 40px; font-size: 16px; }
.login-card input { height: 40px; font-size: 16px; }

#blazor-error-ui {
    background: #fffbe6; color: rgba(0, 0, 0, 0.88); display: none;
    position: fixed; bottom: 0; left: 0; right: 0;
    padding: 12px 16px; font-size: 14px; z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1); border-top: 1px solid #ffe58f;
}
#blazor-error-ui .reload { margin-left: 16px; }
#blazor-error-ui .dismiss {
    cursor: pointer; position: absolute; right: 16px; top: 12px;
}

@media (max-width: 768px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-nav { flex-direction: row; align-items: center; justify-content: space-between; padding: 0 16px; flex-wrap: wrap; }
    .admin-nav .brand { height: 48px; padding: 0; }
    .admin-nav nav { display: flex; padding: 0; overflow-x: auto; width: 100%; border-top: 1px solid rgba(255,255,255,0.1); }
    .admin-nav nav a { padding: 12px 16px; white-space: nowrap; }
    .admin-nav .admin-user { border: none; padding: 12px 0; display: none; }
    .admin-main { padding: 16px; }
}