:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #172033;
    --muted: #6b7280;
    --primary: #0f766e;
    --primary-dark: #115e59;
    --sidebar: #111827;
    --border: #e5e7eb;
    --danger: #b91c1c;
    --success: #166534;
    --shadow: 0 18px 45px rgba(15, 23, 42, .08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: inherit; }

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at top left, rgba(15,118,110,.14), transparent 34%),
        linear-gradient(135deg, #f8fafc, #eef2ff);
}

.login-shell {
    width: min(980px, 100%);
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    background: var(--panel);
    border-radius: 28px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.login-brand {
    padding: 64px;
    background: linear-gradient(145deg, var(--sidebar), #0f766e);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-brand h1 { font-size: 44px; margin: 20px 0 10px; }
.login-brand p { font-size: 18px; line-height: 1.6; opacity: .86; }

.brand-mark {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: white;
    color: var(--primary);
    display: grid;
    place-items: center;
    font-size: 34px;
    font-weight: 800;
    box-shadow: 0 10px 25px rgba(0,0,0,.14);
}

.brand-mark.small {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    font-size: 22px;
}

.login-card, .setup-card {
    padding: 56px;
}

.setup-card {
    width: min(520px, 100%);
    background: white;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

h1, h2, p { margin-top: 0; }
.muted { color: var(--muted); }

label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    margin: 18px 0 8px;
}

input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 15px;
    font-size: 16px;
    outline: none;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(15,118,110,.11);
}

button, .button-link {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-top: 22px;
    border: 0;
    border-radius: 12px;
    padding: 14px 18px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
}

button:hover, .button-link:hover { background: var(--primary-dark); }

.alert {
    padding: 13px 15px;
    border-radius: 12px;
    margin: 18px 0;
    line-height: 1.45;
}

.alert-error { background: #fef2f2; color: var(--danger); }
.alert-success { background: #f0fdf4; color: var(--success); }

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px 1fr;
}

.sidebar {
    background: var(--sidebar);
    color: white;
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 8px 24px;
}

.sidebar-brand small {
    display: block;
    color: #9ca3af;
    margin-top: 4px;
}

.sidebar nav {
    display: grid;
    gap: 6px;
}

.sidebar nav a, .logout-link {
    text-decoration: none;
    color: #d1d5db;
    padding: 12px 14px;
    border-radius: 10px;
}

.sidebar nav a:hover, .sidebar nav a.active {
    color: white;
    background: rgba(255,255,255,.09);
}

.logout-link { margin-top: auto; }

.content { padding: 34px; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 28px;
}

.topbar h1 { margin-bottom: 6px; }
.topbar p { color: var(--muted); margin-bottom: 0; }

.role-badge {
    background: #ccfbf1;
    color: #115e59;
    border-radius: 999px;
    padding: 8px 13px;
    font-size: 13px;
    font-weight: 800;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.stat-card, .welcome-panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.stat-card { padding: 22px; }
.stat-card span { color: var(--muted); font-size: 14px; }
.stat-card strong { display: block; font-size: 28px; margin-top: 12px; }

.welcome-panel {
    margin-top: 22px;
    padding: 28px;
}

.next-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.next-steps span {
    background: #f3f4f6;
    border-radius: 999px;
    padding: 9px 13px;
    font-size: 14px;
}

@media (max-width: 900px) {
    .login-shell { grid-template-columns: 1fr; }
    .login-brand { padding: 42px; }
    .login-card { padding: 38px; }

    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .sidebar nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .logout-link { margin-top: 14px; }

    .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
    .login-page { padding: 12px; }
    .login-brand, .login-card, .setup-card { padding: 28px; }
    .login-brand h1 { font-size: 34px; }
    .content { padding: 22px 16px; }
    .topbar { align-items: flex-start; flex-direction: column; }
    .stats-grid { grid-template-columns: 1fr; }
    .sidebar nav { grid-template-columns: 1fr; }
}