/* Premium Modern Auth Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --bg-gradient-start: #e0e7ff;
  --bg-gradient-end: #ede9fe;
  --card-bg: rgba(255, 255, 255, 0.96);
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #cbd5e1;
  --error: #ef4444;
  --success: #10b981;
}

* { box-sizing: border-box; }

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  min-height: 100vh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.auth-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  padding: 2.5rem 2.5rem;
  border-radius: 1.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1), 0 10px 15px -3px rgba(0, 0, 0, 0.05);
  width: 100%;
  max-width: 440px;
  animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 16px rgba(99, 102, 241, 0.25);
}

.auth-title {
  color: var(--text-main);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.025em;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: flex;
  gap: 1rem;
}

.form-row .form-group {
  flex: 1;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-main);
  transition: all 0.2s ease-in-out;
  background: white;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.form-control::placeholder {
  color: #94a3b8;
}

.auth-btn {
  width: 100%;
  padding: 0.875rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.2), 0 2px 4px -1px rgba(99, 102, 241, 0.1);
}

.auth-btn:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.25), 0 4px 6px -2px rgba(99, 102, 241, 0.15);
}

.auth-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.auth-link {
  display: block;
  text-align: center;
  margin-top: 1.5rem;
  color: var(--primary-color);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.auth-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.error-msg {
  color: var(--error);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  padding: 0.875rem;
  border-radius: 0.75rem;
  display: none;
  font-weight: 500;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-content {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 1.5rem;
  text-align: center;
  max-width: 420px;
  width: 100%;
  animation: scaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-icon {
  width: 64px;
  height: 64px;
  background: #d1fae5;
  color: var(--success);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 1.5rem auto;
}

.loader {
  border: 3px solid rgba(255,255,255,0.3);
  border-left-color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
}

@keyframes spin { 100% { transform: rotate(360deg); } }