/* Anna University Color Palette & Variables */
:root {
  --primary-blue: #0A3663; /* Anna Univ deep blue */
  --secondary-blue: #1A5B9C;
  --accent-gold: #D4AF37;
  --text-dark: #333333;
  --text-light: #666666;
  --bg-color: #F4F7F6;
  --white: #FFFFFF;
  --border-color: #E0E0E0;
  --success: #28a745;
  --danger: #dc3545;
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  border-bottom: 4px solid var(--accent-gold);
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

header p {
  font-size: 0.9rem;
  opacity: 0.9;
  margin-top: 0.5rem;
}

/* Main Container */
main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.container {
  background-color: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 600px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s ease;
}

/* Sections */
.section {
  display: none; /* Hidden by default, toggled via JS */
  animation: fadeIn 0.4s ease forwards;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Spinner / Loading */
.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(10, 54, 99, 0.1);
  border-left-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1.5rem;
}

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

/* Typography */
h2 {
  color: var(--primary-blue);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
  text-align: left;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

input[type="text"], input[type="date"] {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

input[type="text"]:focus, input[type="date"]:focus {
  outline: none;
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 3px rgba(26, 91, 156, 0.1);
}

button {
  background-color: var(--primary-blue);
  color: var(--white);
  border: none;
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  transition: background-color 0.2s;
}

button:hover {
  background-color: var(--secondary-blue);
}

button:disabled {
  background-color: var(--text-light);
  cursor: not-allowed;
}

.error-msg {
  color: var(--danger);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  display: none;
}

/* Queue Info */
.queue-info {
  margin: 1.5rem 0;
  padding: 1.5rem;
  background-color: rgba(10, 54, 99, 0.05);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.queue-position {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin: 0.5rem 0;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  color: var(--text-light);
  font-size: 0.85rem;
}

/* Results Dashboard Specifics will go here */
#results-container {
  max-width: 800px;
}

.student-info {
  text-align: left;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.student-info p {
  margin-bottom: 0.5rem;
}

.marks-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  text-align: left;
}

.marks-table th, .marks-table td {
  padding: 12px 15px;
  border-bottom: 1px solid var(--border-color);
}

.marks-table th {
  background-color: var(--primary-blue);
  color: var(--white);
  font-weight: 600;
}

.marks-table tr:hover {
  background-color: #f9f9f9;
}

.result-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
}

.gpa-display {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.print-btn {
  width: auto;
  background-color: #28a745;
}

.print-btn:hover {
  background-color: #218838;
}

/* Print Styles */
@media print {
  body {
    background-color: var(--white);
  }
  header, footer, .print-btn {
    display: none !important;
  }
  .container {
    box-shadow: none;
    padding: 0;
    max-width: 100%;
  }
  .marks-table th {
    background-color: #eee !important;
    color: #000 !important;
    -webkit-print-color-adjust: exact;
  }
}