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

:root {
    --bg:        #f7f8fa;
    --surface:   #ffffff;
    --border:    #e8eaed;
    --border-lg: #dde0e6;
    --text:      #18181b;
    --text-2:    #52525b;
    --text-3:    #a1a1aa;
    --accent:    #2563eb;
    --accent-bg: #eff6ff;
    --success:   #16a34a;
    --success-bg:#f0fdf4;
    --danger:    #dc2626;
    --danger-bg: #fef2f2;
    --warning:   #d97706;
    --warning-bg:#fffbeb;
    --info:      #0284c7;
    --info-bg:   #f0f9ff;
    --radius:    8px;
    --shadow:    0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,.07);
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 20px 20px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}
.sidebar-brand .logo-mark {
    width: 28px;
    height: 28px;
    background: var(--accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.sidebar-brand .logo-mark svg { display: block; }
.sidebar-brand .logo-text { font-size: 15px; font-weight: 700; color: var(--text); letter-spacing: -.3px; }
.sidebar-brand .logo-text span { color: var(--accent); }

.sidebar-section {
    padding: 14px 12px 6px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .8px;
    color: var(--text-3);
}

.sidebar nav a {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 12px;
    margin: 1px 8px;
    border-radius: 6px;
    color: var(--text-2);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    transition: background .12s, color .12s;
}
.sidebar nav a:hover { background: var(--bg); color: var(--text); }
.sidebar nav a.active { background: var(--accent-bg); color: var(--accent); }
.sidebar nav a svg { flex-shrink: 0; opacity: .7; }
.sidebar nav a.active svg { opacity: 1; }

.sidebar-footer {
    margin-top: auto;
    padding: 14px 16px;
    border-top: 1px solid var(--border);
    font-size: 12.5px;
    color: var(--text-3);
}
.sidebar-footer strong { color: var(--text-2); display: block; margin-bottom: 4px; }
.sidebar-footer a { color: var(--accent); text-decoration: none; font-size: 12px; }
.sidebar-footer a:hover { text-decoration: underline; }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 28px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar h1 { font-size: 15px; font-weight: 600; color: var(--text); letter-spacing: -.2px; }
.topbar .user { font-size: 12.5px; color: var(--text-3); }

.content { padding: 24px 28px; flex: 1; max-width: 1100px; }

/* ── Cards ── */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 20px;
}
.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

/* ── Stats ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
}
.stat-card .label {
    font-size: 11px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: .6px;
    font-weight: 500;
}
.stat-card .value {
    font-size: 26px;
    font-weight: 700;
    margin-top: 6px;
    color: var(--text);
    letter-spacing: -.5px;
}

/* ── Table ── */
.table-wrap { overflow-x: auto; margin: -4px -4px; padding: 4px 4px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
    text-align: left;
    padding: 9px 12px;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-3);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    color: var(--text-2);
}
tbody td strong { color: var(--text); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg); }

/* ── Badges ── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .2px;
    white-space: nowrap;
}
.badge-warning  { background: var(--warning-bg); color: var(--warning); }
.badge-info     { background: var(--info-bg);    color: var(--info); }
.badge-success  { background: var(--success-bg); color: var(--success); }
.badge-danger   { background: var(--danger-bg);  color: var(--danger); }
.badge-secondary{ background: var(--bg);         color: var(--text-3); border: 1px solid var(--border); }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 6px;
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
    transition: opacity .12s, background .12s;
    white-space: nowrap;
    line-height: 1;
}
.btn:hover { opacity: .88; }
.btn-primary   { background: var(--accent); color: #fff; }
.btn-success   { background: var(--success); color: #fff; }
.btn-danger    { background: var(--danger);  color: #fff; }
.btn-secondary { background: var(--surface); color: var(--text-2); border-color: var(--border-lg); }
.btn-secondary:hover { background: var(--bg); opacity: 1; }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 5px;
}
input[type=text], input[type=email], input[type=password], input[type=date],
input[type=datetime-local], input[type=color], textarea, select {
    width: 100%;
    padding: 8px 11px;
    border: 1px solid var(--border-lg);
    border-radius: 6px;
    font-size: 13.5px;
    color: var(--text);
    background: var(--surface);
    font-family: inherit;
    transition: border-color .12s, box-shadow .12s;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
input[type=color] { padding: 3px; height: 38px; cursor: pointer; }
textarea { resize: vertical; min-height: 80px; }
.form-hint { font-size: 12px; color: var(--text-3); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Alerts ── */
.alert {
    padding: 11px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 13.5px;
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}
.alert-success { background: var(--success-bg); border-color: #bbf7d0; color: var(--success); }
.alert-danger  { background: var(--danger-bg);  border-color: #fecaca; color: var(--danger); }
.alert-info    { background: var(--info-bg);    border-color: #bae6fd; color: var(--info); }

/* ── Login page ── */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}
.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 36px 40px;
    width: 380px;
    box-shadow: var(--shadow-md);
}
.login-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}
.login-logo .mark {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-logo .name { font-size: 18px; font-weight: 700; letter-spacing: -.3px; }
.login-logo .name span { color: var(--accent); }
.login-box .sub { color: var(--text-3); font-size: 13px; margin-bottom: 24px; }

/* ── Timeline ── */
.timeline { list-style: none; padding: 0; }
.timeline li {
    display: flex;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.timeline li:last-child { border-bottom: none; }
.timeline .tl-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 5px;
    flex-shrink: 0;
}
.timeline .tl-date { color: var(--text-3); font-size: 11.5px; margin-top: 2px; }

.text-muted { color: var(--text-3); }
.mt-16 { margin-top: 16px; }
.actions { display: flex; gap: 6px; align-items: center; }
code { font-family: 'SF Mono', 'Fira Code', monospace; font-size: .9em; background: var(--bg); padding: 1px 5px; border-radius: 3px; color: var(--text-2); }