/* ===== Base ===== */
:root {
  --bg: #111827;              /* lighter than before */
  --panel: #0f172a;
  --card: #111c36;
  --border: #27324a;

  --accent: #6366f1;
  --accent-2: #22c55e;
  --danger: #ef4444;

  --text: #f1f5f9;
  --muted: #cbd5e1;
}

* {
  box-sizing: border-box;
}

body.sp-portal {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 20% -10%, #2a3550, transparent),
    radial-gradient(1200px 600px at 100% 0%, #3f3aa6, transparent),
    linear-gradient(
      180deg,
      rgba(30,41,59,0.85),
      rgba(15,23,42,0.85)
    );
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.5;
}


/* ===== Global Layout Spacing ===== */
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  margin-bottom: 24px;
}

.topbar a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  opacity: .9;
}

.topbar a:hover {
  opacity: 1;
}

/* Main content container for dashboards */
.sp-portal > h2,
.sp-portal > p,
.sp-portal > .card,
.sp-portal > table {
  margin-left: auto;
  margin-right: auto;
  max-width: 1100px;
}

/* Headings */
h2 {
  margin: 0 auto 24px;
  max-width: 1100px;
}

h3 {
  margin-top: 0;
  margin-bottom: 16px;
}

/* ===== Centered Auth ===== */
.auth-center {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: linear-gradient(180deg, #111c36, #0f172a);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 25px 70px rgba(0,0,0,.45);
}

.auth-card h2 {
  margin-top: 0;
  margin-bottom: 20px;
  text-align: center;
}

/* ===== Cards ===== */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 28px;
  box-shadow: 0 10px 40px rgba(0,0,0,.25);
}

/* ===== Forms ===== */
.sp-form {
  margin-top: 12px;
}

.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.col {
  display: flex;
  flex-direction: column;
}

/* ===== Inputs & Buttons ===== */
input,
select {
  width: 100%;
  background: #020617;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 6px;
}

input::placeholder {
  color: #94a3b8;
}

button {
  margin-top: 14px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  color: white;
  border: none;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(99,102,241,.45);
}

button.secondary {
  background: #020617;
  border: 1px solid var(--border);
}

/* ===== Toggle Switch ===== */
.toggle {
  position: relative;
  width: 56px;
  height: 30px;
  background: #1e293b;
  border-radius: 999px;
  cursor: pointer;
  transition: background .25s;
  margin: 12px 0;
}

.toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background: #f8fafc;
  border-radius: 50%;
  transition: transform .25s cubic-bezier(.4,0,.2,1);
}

.toggle.on {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.toggle.on::after {
  transform: translateX(26px);
}

/* ===== Tables ===== */
table {
  width: 100%;
  border-collapse: collapse;
  background: #020617;
  border-radius: 16px;
  overflow: hidden;
}

thead {
  background: #020617;
}

th, td {
  padding: 14px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  text-align: left;
}

tbody tr:hover {
  background: rgba(255,255,255,0.02);
}

/* ===== Status text ===== */
.ok {
  color: var(--accent-2);
  font-weight: 600;
}

.err {
  color: var(--danger);
  font-weight: 600;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 13px;
}

/* ===== Toast Notifications ===== */
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: #0f172a;
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  padding: 14px 18px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
  animation: slideIn .4s ease;
  z-index: 10000;
}

.toast.success { border-left-color: var(--accent-2); }
.toast.error   { border-left-color: var(--danger); }

@keyframes slideIn {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ===== Loader ===== */
.loader {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.75);
  backdrop-filter: blur(6px);
  display: none;
  place-items: center;
  z-index: 10001;
}

.loader.active {
  display: grid;
}

.spinner {
  width: 56px;
  height: 56px;
  border: 4px solid #334155;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Student Top Bar ===== */
.sp-student-bar {
  background: linear-gradient(135deg, #0f172a, #020617);
  border-bottom: 1px solid var(--border);
  color: var(--text);
  padding: 10px 16px;
}
/* Student acknowledgment checkbox */
.sp-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0;          /* no indentation */
  padding: 0;         /* no indentation */
  font-size: 14px;
  line-height: 1.4;
}

.sp-checkbox input[type="checkbox"] {
  margin: 2px 0 0 0;  /* align to first text line */
  transform: scale(1.3);
}