:root {
  --purple: #8B2FC9;
  --purple-dark: #6d2299;
  --purple-light: #f4e9fb;
  --text: #1f1f24;
  --muted: #6b6b76;
  --border: #e6e1ec;
  --bg: #faf9fc;
  --white: #ffffff;
  --danger: #d64545;
  --success: #2fa86b;
}

* { box-sizing: border-box; }

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

.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar .brand { font-weight: 700; color: var(--purple-dark); text-decoration: none; font-size: 1.1rem; }
.topbar nav a { color: var(--text); text-decoration: none; margin-left: 18px; font-size: 0.92rem; }
.topbar nav a:hover { color: var(--purple); }

.container { max-width: 1080px; margin: 0 auto; padding: 32px 20px; }
.container.narrow { max-width: 440px; }

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 2px 10px rgba(139,47,201,0.05);
}

h1, h2, h3 { color: var(--text); }
h1 { font-size: 1.6rem; }

label { display: block; font-size: 0.85rem; font-weight: 600; margin: 14px 0 6px; color: var(--text); }

input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=url], textarea, select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: var(--white);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(139,47,201,0.12);
}

textarea { resize: vertical; min-height: 90px; }

.btn {
  display: inline-block;
  background: var(--purple);
  color: var(--white);
  border: none;
  padding: 11px 22px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  margin-top: 18px;
  transition: background 0.15s;
}
.btn:hover { background: var(--purple-dark); }
.btn.secondary { background: var(--white); color: var(--purple); border: 1px solid var(--purple); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 6px 14px; font-size: 0.82rem; margin-top: 0; }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 0.9rem; }
.alert.error { background: #fdecec; color: var(--danger); border: 1px solid #f5c2c2; }
.alert.success { background: #eaf8f1; color: var(--success); border: 1px solid #bfe8d3; }

table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; background: var(--purple-light); color: var(--purple-dark); }
.badge.role-admin { background: #fde8d8; color: #b5590a; }
.badge.role-instructor { background: #e0ecfb; color: #1c5fa8; }
.badge.role-student { background: var(--purple-light); color: var(--purple-dark); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 18px; margin-top: 18px; }
.stat { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.stat .num { font-size: 1.8rem; font-weight: 700; color: var(--purple-dark); }
.stat .label { color: var(--muted); font-size: 0.85rem; }

.portfolio-hero { background: linear-gradient(135deg, var(--purple), var(--purple-dark)); color: white; border-radius: 16px; padding: 36px; display: flex; gap: 24px; align-items: center; }
.portfolio-hero img.avatar { width: 96px; height: 96px; border-radius: 50%; object-fit: cover; border: 3px solid white; background: #fff; }
.progress-bar { background: var(--border); border-radius: 999px; height: 8px; overflow: hidden; }
.progress-bar .fill { background: var(--purple); height: 100%; }

.project-card img { width: 100%; height: 150px; object-fit: cover; border-radius: 10px; margin-bottom: 10px; background: var(--purple-light); }

footer.portal-footer { text-align: center; color: var(--muted); font-size: 0.82rem; padding: 30px; }