:root {
  --ink: #0a1d32;
  --soft: #4a5f78;
  --line: #d6e0ea;
  --ok: #0d9a50;
  --warn: #c63d1f;
  --accent: #1269c7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% 15%, rgba(18, 105, 199, 0.2), transparent 42%),
    radial-gradient(circle at 5% 95%, rgba(13, 154, 80, 0.18), transparent 37%),
    linear-gradient(150deg, #f4fbff, #effff5);
}

.attendance-shell {
  width: min(980px, 94vw);
  margin: 20px auto 34px;
}

.top-card,
.form-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(11, 40, 70, 0.14);
  backdrop-filter: blur(8px);
}

.top-card h1 {
  margin: 8px 0 10px;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.7rem, 3.3vw, 2.6rem);
}

.top-card p {
  color: var(--soft);
  line-height: 1.6;
}

.back-link {
  color: #24496f;
  text-decoration: none;
  font-weight: 700;
}

.target-box {
  margin: 16px 0;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 700;
  color: #1e3e62;
}

.verify-btn {
  border: 0;
  border-radius: 12px;
  background: linear-gradient(130deg, var(--accent), #0c4f9f);
  color: #fff;
  padding: 14px 22px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.verify-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 22px rgba(18, 105, 199, 0.3);
}

.verify-btn:disabled {
  cursor: not-allowed;
  opacity: 0.75;
  transform: none;
}

.helper-text {
  margin: 14px 0 0;
  font-size: 0.9rem;
}

.form-card {
  margin-top: 18px;
  overflow: hidden;
}

.hidden {
  display: none;
}

iframe {
  border: 0;
  width: 100%;
  background: #fff;
  border-radius: 12px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 16, 30, 0.72);
  backdrop-filter: blur(4px);
}

.modal-card {
  position: relative;
  z-index: 1;
  width: min(500px, 92vw);
  border-radius: 18px;
  background: #fff;
  padding: 22px 20px 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
  animation: riseIn 0.22s ease;
}

.modal-accent {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(120deg, #1f9d55, #0d9a50);
  margin-bottom: 14px;
}

.modal-card h2 {
  margin: 0;
  font-family: "Sora", sans-serif;
}

.modal-card p {
  margin: 10px 0 18px;
  color: #39526d;
  line-height: 1.6;
}

.modal-btn {
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  font-weight: 700;
  color: #fff;
  background: #113f70;
  cursor: pointer;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 768px) {
  .attendance-shell {
    width: min(980px, 96vw);
    margin-top: 10px;
  }

  .top-card,
  .form-card {
    border-radius: 16px;
    padding: 18px;
  }

  iframe {
    height: 1900px;
  }
}

/* New Styles for Data Page */
.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.data-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 14px 22px;
  font-size: 1rem;
  font-weight: 700;
  transition: all 0.2s ease;
}

.data-btn:hover {
  background: #fff;
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.05);
}

.data-shell {
  width: 95vw;
  margin: 20px auto 40px;
}

.data-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 25px 60px rgba(11, 40, 70, 0.12);
  backdrop-filter: blur(10px);
  overflow-x: auto;
}

.data-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.data-header h1 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: 1.8rem;
}

.refresh-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1000px;
}

th {
  text-align: left;
  background: #f8fafc;
  padding: 14px 16px;
  font-weight: 700;
  color: #475569;
  border-bottom: 2px solid var(--line);
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid #f1f5f9;
  color: #1e293b;
  font-size: 0.9rem;
}

tr:hover {
  background: #f8fbff;
}

.loading-state {
  text-align: center;
  padding: 40px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(18, 105, 199, 0.1);
  border-left-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

.header-actions {
  display: flex;
  gap: 12px;
}

.export-btn {
  background: var(--ok) !important;
  color: white !important;
  border: none !important;
}

.export-btn:hover {
  background: #0b8445 !important;
  box-shadow: 0 8px 15px rgba(13, 154, 80, 0.2) !important;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  background: #f8fafc;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
}

.filter-group {
  flex: 1;
  min-width: 180px;
}

.filter-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 10px;
  color: #475569;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-options {
  max-height: 120px;
  overflow-y: auto;
  padding: 8px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}

.filter-option:last-child {
  margin-bottom: 0;
}

.filter-option input {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

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