:root {
  --purple-dark: #4b2e63;
  --purple: #5c3878;
  --purple-light: #efe9f3;
  --text: #2b2b2b;
  --text-muted: #6b6b6b;
  --border: #d9d3e0;
  --green: #2f7a3d;
  --red: #b3391f;
  --bg: #f6f4f8;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

/* ---------- Login page ---------- */

.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--purple-dark), var(--purple) 60%, #7a4f96);
  padding: 20px;
}

.login-card {
  background: #fff;
  border-radius: 10px;
  padding: 40px 32px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.brand-logo {
  height: 32px;
  width: auto;
  display: block;
}

.brand-logo-dark {
  background: #fff;
  padding: 4px 8px;
  border-radius: 6px;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--purple-dark);
}

.login-subtitle {
  color: var(--text-muted);
  margin: 6px 0 24px;
  font-size: 14px;
}

#login-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 14px 0 6px;
  color: var(--text);
}

#login-form input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
}

#login-form input:focus {
  outline: 2px solid var(--purple);
  outline-offset: 1px;
}

#login-form button {
  width: 100%;
  margin-top: 22px;
  padding: 11px;
  border: none;
  border-radius: 6px;
  background: var(--purple-dark);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

#login-form button:hover {
  background: var(--purple);
}

.error-message {
  color: var(--red);
  font-size: 13px;
  margin-top: 14px;
  text-align: center;
}

/* ---------- Dashboard ---------- */

.topbar {
  background: var(--purple-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-brand .brand-name {
  color: #fff;
  font-size: 18px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
}

#logout-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}

#logout-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.loading {
  color: var(--text-muted);
  text-align: center;
  margin-top: 60px;
}

.student-card {
  background: #fff;
  border-radius: 8px;
  padding: 18px 22px;
  margin-bottom: 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.student-card h1 {
  margin: 0 0 4px;
  font-size: 20px;
  color: var(--purple-dark);
}

.student-card p {
  margin: 2px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.semester-block {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 22px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.semester-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: var(--purple-light);
  border-bottom: 1px solid var(--border);
}

.semester-header h2 {
  margin: 0;
  font-size: 15px;
  color: var(--purple-dark);
}

.semester-credits {
  font-size: 13px;
  font-weight: 600;
}

.semester-credits.met {
  color: var(--green);
}

.semester-credits.not-met {
  color: var(--red);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead th {
  background: var(--purple-dark);
  color: #fff;
  text-align: left;
  padding: 10px 14px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

thead th.numeric,
td.numeric {
  text-align: center;
}

tbody tr.course-row {
  font-weight: 600;
  border-top: 1px solid var(--border);
}

tbody tr.sub-row td {
  color: var(--text-muted);
  font-weight: 400;
  padding-left: 28px;
  font-size: 13px;
}

td {
  padding: 8px 14px;
}

.result-pass {
  color: var(--green);
  font-weight: 700;
}

.result-fail {
  color: var(--red);
  font-weight: 700;
}

@media (max-width: 600px) {
  .content {
    padding: 18px 10px 40px;
  }

  thead th,
  td {
    padding: 8px 8px;
    font-size: 12.5px;
  }

  tbody tr.sub-row td {
    padding-left: 16px;
  }
}