:root {
    --primary: #2563eb;
    --secondary: #0f172a;
    --bg: #eef4ff;
    --card: #ffffff;
    --text: #122033;
    --muted: #637189;
    --border: #d8e2f0;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
a { color: inherit; text-decoration: none; }
body { min-height: 100vh; }

.app-shell { max-width: 1200px; margin: 0 auto; padding: 20px; }
.topbar {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff; padding: 22px; border-radius: 24px; box-shadow: var(--shadow);
}
.topbar h1 { margin: 0; font-size: 1.5rem; }
.topbar p { margin: 6px 0 0; opacity: .85; }
.top-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.top-actions a {
    background: rgba(255,255,255,.14); color: #fff; padding: 10px 14px; border-radius: 12px;
    border: 1px solid rgba(255,255,255,.22);
}
.content { padding: 20px 0; }
.card {
    background: var(--card); border: 1px solid var(--border); border-radius: 24px;
    padding: 24px; box-shadow: var(--shadow);
}
.grid-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.auth-wrap { min-height: calc(100vh - 170px); display: grid; place-items: center; }
.auth-card { max-width: 520px; width: 100%; }
.auth-hero h2 { margin: 10px 0 8px; font-size: 2rem; }
.auth-hero p { color: var(--muted); }
.badge {
    display: inline-flex; padding: 8px 12px; border-radius: 999px; background: #dbeafe; color: var(--primary);
    font-size: .9rem; font-weight: bold;
}
.form-grid { display: grid; gap: 14px; margin-top: 18px; }
label { display: block; font-weight: bold; margin-bottom: 6px; }
input, select, textarea {
    width: 100%; border: 1px solid var(--border); border-radius: 14px; padding: 14px;
    font-size: 1rem; outline: none; background: #fff;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, .12); }
.btn-primary {
    border: 0; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff;
    padding: 14px 18px; border-radius: 16px; font-weight: bold; cursor: pointer;
}
.flash-stack { display: grid; gap: 10px; margin-top: 18px; }
.flash { padding: 14px 16px; border-radius: 14px; font-weight: 600; }
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }
.flash-warning { background: #ffedd5; color: #9a3412; }
ul { margin: 0; padding-left: 18px; }
li + li { margin-top: 8px; }

@media (max-width: 900px) {
    .grid-cards { grid-template-columns: 1fr; }
    .topbar { flex-direction: column; align-items: flex-start; }
    .app-shell { padding: 14px; }
}