/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --success: #43e97b;
  --danger: #f5576c;
  --warning: #ffa726;
  --info: #4facfe;
  --dark: #2d3748;
  --light: #f7fafc;
  --gray: #718096;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: var(--dark);
  line-height: 1.6;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out;
}

.animate-shake {
  animation: shake 0.5s ease-in-out;
}

/* ===== AUTH PAGES ===== */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-container {
  width: 100%;
  max-width: 450px;
}

.auth-box {
  background: var(--white);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-header i {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 15px;
}

.auth-header h1 {
  font-size: 2rem;
  color: var(--dark);
  margin-bottom: 10px;
}

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

.auth-form {
  margin-top: 30px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--dark);
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group label i {
  margin-right: 5px;
  color: var(--primary);
}

.form-group input {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
  display: block;
  margin-top: 5px;
  color: var(--gray);
  font-size: 0.85rem;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
}

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

.btn-success {
  background: var(--success);
  color: var(--white);
}

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

.btn-warning {
  background: var(--warning);
  color: var(--white);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.auth-links {
  margin-top: 25px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.auth-links a:hover {
  color: var(--secondary);
  transform: translateX(5px);
}

.link-primary {
  color: var(--primary);
}

.link-secondary {
  color: var(--gray);
}

/* ===== ALERTS ===== */
.alert {
  padding: 15px 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.alert i {
  font-size: 1.2rem;
}

.alert-error {
  background: #fee;
  color: var(--danger);
  border: 2px solid var(--danger);
}

.alert-success {
  background: #efe;
  color: var(--success);
  border: 2px solid var(--success);
}

/* ===== NAVBAR ===== */
.navbar {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
}

.nav-brand i {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 5px;
}

.nav-menu a {
  padding: 10px 20px;
  color: var(--dark);
  text-decoration: none;
  border-radius: 10px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
}

.logout-btn {
  background: var(--danger);
  color: var(--white) !important;
}

.nav-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ===== MAIN CONTENT ===== */
.main-content {
  min-height: calc(100vh - 140px);
  padding: 40px 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-header {
  text-align: center;
  margin-bottom: 40px;
  color: var(--white);
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
}

.page-header p {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.stat-card {
  background: var(--white);
  border-radius: 15px;
  padding: 25px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--white);
}

.stat-info h3 {
  font-size: 2rem;
  color: var(--dark);
  margin-bottom: 5px;
}

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

/* ===== DASHBOARD GRID ===== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.dashboard-card {
  background: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.card-header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  padding: 20px;
}

.card-header h2 {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-body {
  padding: 25px;
}

.quick-actions {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.action-btn {
  padding: 15px 20px;
  background: var(--light);
  border-radius: 10px;
  text-decoration: none;
  color: var(--dark);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.3s ease;
}

.action-btn:hover {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  transform: translateX(5px);
}

.action-btn i {
  font-size: 1.3rem;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--light);
  border-radius: 8px;
}

.info-label {
  color: var(--gray);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-value {
  color: var(--dark);
  font-weight: 600;
}

/* ===== INBOX ===== */
.empty-state {
  background: var(--white);
  border-radius: 15px;
  padding: 60px 40px;
  text-align: center;
  box-shadow: var(--shadow);
}

.empty-state i {
  font-size: 4rem;
  color: var(--gray);
  margin-bottom: 20px;
}

.empty-state h2 {
  font-size: 1.8rem;
  color: var(--dark);
  margin-bottom: 10px;
}

.empty-state p {
  color: var(--gray);
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.email-list {
  margin-top: 30px;
}

.email-list h3 {
  color: var(--dark);
  margin-bottom: 15px;
}

.email-badge {
  display: inline-block;
  padding: 8px 15px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 20px;
  font-size: 0.9rem;
  margin: 5px;
}

.inbox-container {
  background: var(--white);
  border-radius: 15px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.inbox-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--light);
}

.inbox-header h2 {
  color: var(--dark);
  font-size: 1.5rem;
}

.message-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.message-item {
  padding: 20px;
  background: var(--light);
  border-radius: 12px;
  border-left: 4px solid var(--primary);
  transition: all 0.3s ease;
}

.message-item:hover {
  background: #e8f0fe;
  transform: translateX(5px);
  box-shadow: var(--shadow);
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.message-from {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--dark);
  font-size: 1rem;
}

.message-from i {
  color: var(--primary);
  font-size: 1.2rem;
}

.message-date {
  color: var(--gray);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 5px;
}

.message-subject {
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.message-subject i {
  color: var(--primary);
}

.message-preview {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 10px;
}

.message-to {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray);
  font-size: 0.9rem;
}

/* ===== PROFILE ===== */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 25px;
}

.profile-card {
  background: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.profile-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.danger-zone {
  text-align: center;
  padding: 20px;
  background: #fee;
  border-radius: 10px;
  border: 2px solid var(--danger);
}

.danger-zone p {
  color: var(--danger);
  font-weight: 600;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* ===== DELETE PAGE ===== */
.delete-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 15px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.warning-box {
  background: #fee;
  border: 2px solid var(--danger);
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 30px;
  text-align: center;
}

.warning-box i {
  font-size: 3rem;
  color: var(--danger);
  margin-bottom: 15px;
}

.warning-box h2 {
  color: var(--danger);
  margin-bottom: 15px;
}

.warning-box p {
  color: var(--dark);
  margin-bottom: 15px;
}

.warning-box ul {
  list-style: none;
  text-align: left;
  max-width: 300px;
  margin: 0 auto;
}

.warning-box ul li {
  padding: 8px 0;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.warning-box ul li i {
  font-size: 1rem;
  color: var(--danger);
}

.delete-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.button-group {
  display: flex;
  gap: 15px;
  justify-content: center;
}

/* ===== ADMIN PANEL ===== */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-item {
  background: var(--white);
  border-radius: 12px;
  padding: 25px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: var(--shadow);
}

.stat-item i {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-item h3 {
  font-size: 2rem;
  color: var(--dark);
}

.stat-item p {
  color: var(--gray);
  font-size: 0.9rem;
}

.admin-table-container {
  background: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table-header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  padding: 20px 30px;
}

.table-header h2 {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.table-responsive {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table thead {
  background: var(--light);
}

.admin-table th {
  padding: 15px;
  text-align: left;
  font-weight: 600;
  color: var(--dark);
  border-bottom: 2px solid #e2e8f0;
}

.admin-table td {
  padding: 15px;
  border-bottom: 1px solid #e2e8f0;
  color: var(--dark);
}

.admin-table tbody tr:hover {
  background: var(--light);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-admin {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
}

.badge-user {
  background: var(--light);
  color: var(--gray);
}

.action-buttons {
  display: flex;
  gap: 8px;
}

.btn-icon {
  width: 35px;
  height: 35px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  color: var(--white);
}

.btn-icon:hover {
  transform: scale(1.1);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--white);
  padding: 20px;
  text-align: center;
  box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.1);
}

.footer-content p {
  color: var(--gray);
  margin: 5px 0;
}

.footer-content i {
  color: var(--danger);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .page-header h1 {
    font-size: 1.8rem;
  }

  .stats-grid,
  .dashboard-grid,
  .profile-grid {
    grid-template-columns: 1fr;
  }

  .auth-box {
    padding: 30px 20px;
  }

  .button-group {
    flex-direction: column;
  }

  .admin-table {
    font-size: 0.85rem;
  }

  .admin-table th,
  .admin-table td {
    padding: 10px;
  }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

code {
  background: var(--light);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "Courier New", monospace;
  color: var(--primary);
}