:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --danger: #dc2626;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary);
  text-decoration: none;
}

.brand-icon {
  font-size: 1.4rem;
}

.nav-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--primary);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 40px 0;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 30px 20px;
  background: linear-gradient(180deg, #ffffff 0%, var(--gray-50) 100%);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 36px;
}

.hero-tag {
  display: inline-block;
  background-color: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 9999px;
  margin-bottom: 12px;
  border: 1px solid #bfdbfe;
}

.hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.hero p {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

/* Grid Sections */
.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--gray-900);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 36px;
}

/* Cards */
.card {
  background: #ffffff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.card-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background-color: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--gray-900);
}

.card p {
  color: var(--gray-600);
  font-size: 0.95rem;
}

/* Status Indicators */
.status-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.status-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background-color: var(--gray-50);
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}

.status-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.825rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 9999px;
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--warning);
  border: 1px solid #fde68a;
}

/* 404 / Error Page */
.error-box {
  text-align: center;
  padding: 60px 20px;
  background: #ffffff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  max-width: 600px;
  margin: 40px auto;
  box-shadow: var(--shadow-sm);
}

.error-code {
  font-size: 4rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 12px;
}

.btn {
  display: inline-block;
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  transition: background-color 0.2s ease;
  text-align: center;
}

.btn:hover {
  background-color: var(--primary-hover);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--gray-200);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background-color: var(--gray-300);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-block {
  width: 100%;
}

.btn-nav {
  background-color: var(--primary);
  color: #ffffff !important;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
}

.nav-logout {
  color: var(--danger) !important;
}

.user-info {
  display: flex;
  align-items: center;
}

/* Alerts */
.alert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  font-size: 0.95rem;
  font-weight: 500;
}

.alert-success {
  background-color: var(--success-bg);
  color: #15803d;
  border: 1px solid #bbf7d0;
}

.alert-error {
  background-color: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

/* Auth Cards */
.auth-card {
  max-width: 460px;
  margin: 30px auto;
  background: #ffffff;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}

.auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.auth-header h2 {
  font-size: 1.6rem;
  font-weight: 750;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.auth-header p {
  color: var(--gray-600);
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--gray-900);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-hint {
  display: block;
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-top: 4px;
}

.auth-footer {
  text-align: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
  font-size: 0.9rem;
  color: var(--gray-600);
}

.auth-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.demo-box {
  margin-top: 18px;
  padding: 10px 14px;
  background-color: var(--gray-100);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  border-left: 3px solid var(--primary);
}

.demo-box p {
  margin-top: 4px;
  color: var(--gray-700);
}

/* Role Badges */
.badge-student {
  background-color: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.badge-recruiter {
  background-color: #fdf4ff;
  color: #86198f;
  border: 1px solid #f5d0fe;
}

.badge-admin {
  background-color: #fef3c7;
  color: #b45309;
  border: 1px solid #fde68a;
}

/* Dashboard Header */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-200);
}

.dashboard-header h1 {
  font-size: 1.8rem;
  font-weight: 750;
  color: var(--gray-900);
}

.dashboard-header .subtitle {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-top: 4px;
}

/* Footer */
.footer {
  background-color: #ffffff;
  border-top: 1px solid var(--gray-200);
  padding: 24px 0;
  margin-top: auto;
  font-size: 0.9rem;
  color: var(--gray-600);
  text-align: center;
}

/* Progress Bar */
.progress-bar-bg {
  width: 100%;
  height: 10px;
  background-color: var(--gray-200);
  border-radius: 9999px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, #3b82f6 100%);
  border-radius: 9999px;
  transition: width 0.4s ease;
}

/* Metric Cards */
.metric-card {
  display: flex;
  flex-direction: column;
}

.metric-number {
  font-size: 2.3rem;
  font-weight: 850;
  line-height: 1.1;
  margin: 10px 0 6px 0;
}

.metric-link {
  display: inline-block;
  margin-top: auto;
  padding-top: 12px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}

.metric-link:hover {
  text-decoration: underline;
}

/* Skill Tags */
.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  display: inline-block;
  background-color: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #dbeafe;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
}

.skill-tag-sm {
  font-size: 0.775rem;
  padding: 2px 8px;
}

.resume-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.resume-link:hover {
  text-decoration: underline;
}

/* Drives List & Cards */
.drives-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.drive-card {
  border-left: 5px solid var(--gray-300);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.drive-card.drive-eligible {
  border-left-color: var(--success);
}

.drive-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
}

.drive-company {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.drive-role {
  font-size: 1.45rem;
  font-weight: 750;
  color: var(--gray-900);
  margin: 4px 0;
}

.drive-package {
  font-size: 1.05rem;
  font-weight: 650;
  color: #059669;
}

.drive-description {
  color: var(--gray-700);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.criteria-box {
  background-color: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.criteria-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.criteria-label {
  font-weight: 600;
  min-width: 140px;
  color: var(--gray-900);
}

.ineligibility-banner {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.drive-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--gray-200);
}

/* Badges */
.badge-danger {
  background-color: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.badge-applied {
  background-color: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

/* Button variants */
.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-disabled {
  background-color: var(--gray-200);
  color: var(--gray-600);
  cursor: not-allowed;
  border: 1px solid var(--gray-300);
}

.btn-applied {
  background-color: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

/* Data Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th {
  background-color: var(--gray-50);
  color: var(--gray-700);
  font-weight: 650;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 18px;
  border-bottom: 1px solid var(--gray-200);
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: middle;
  font-size: 0.95rem;
}

.data-table tr:hover td {
  background-color: var(--gray-50);
}