/* Explanation Station - Landing Page Styles */
/* "Quiet confidence" - feels like a library desk, not a chatbot */

:root {
  /* Colors from theme */
  --background: #FAFAF8;
  --surface: #FFFFFF;
  --surface-secondary: #F5F5F3;
  --text-primary: #1A1A1A;
  --text-secondary: #5A5A5A;
  --text-muted: #8A8A8A;
  --primary: #2C3E50;
  --primary-light: #3D5166;
  --primary-dark: #1A2530;
  --accent: #6B7C8A;
  --border: #E8E8E6;
  --divider: #F0F0EE;
  --pro-badge: #6B5AA8;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  max-width: 600px;
  margin: 0 auto;
}

.main-content {
  max-width: 480px;
  width: 100%;
  text-align: center;
  margin: 0 auto;
}

/* Logo Section */
.logo-section {
  margin-bottom: 2rem;
}

.logo-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  color: var(--primary);
}

.logo-icon svg {
  width: 100%;
  height: 100%;
}

.logo-text {
  font-family: 'Crimson Text', Georgia, serif;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

/* Tagline */
.tagline {
  margin-bottom: 2rem;
}

.tagline p {
  font-family: 'Crimson Text', Georgia, serif;
  font-size: 1.375rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* Coming Soon Badge */
.coming-soon-badge {
  display: inline-block;
  margin-bottom: 2rem;
}

.coming-soon-badge span {
  display: inline-block;
  background-color: var(--primary);
  color: var(--surface);
  padding: 0.5rem 1.5rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Description */
.description {
  margin-bottom: 2.5rem;
}

.description p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Features */
.features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 3rem;
}

.feature {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.feature-icon {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

/* Access Section */
.access-section {
  margin-bottom: 3rem;
}

.access-button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.access-button:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--surface);
}

/* Footer */
.footer {
  padding-top: 2rem;
  border-top: 1px solid var(--divider);
}

.footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(26, 26, 26, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--surface);
  border-radius: 12px;
  padding: 2.5rem;
  max-width: 400px;
  width: 100%;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
}

.modal h2 {
  font-family: 'Crimson Text', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  text-align: center;
}

.modal-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  text-align: center;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--surface);
  transition: border-color 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.error-message {
  color: #8A5A5A;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  text-align: center;
  min-height: 1.25rem;
}

.login-button {
  width: 100%;
  padding: 0.875rem;
  background-color: var(--primary);
  color: var(--surface);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.login-button:hover {
  background-color: var(--primary-light);
}

.login-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid transparent;
  border-top-color: var(--surface);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner.hidden {
  display: none;
}

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

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 1.5rem;
  }

  .logo-icon {
    width: 64px;
    height: 64px;
  }

  .logo-text {
    font-size: 2rem;
  }

  .tagline p {
    font-size: 1.25rem;
  }

  .description p {
    font-size: 1rem;
  }

  .modal {
    padding: 2rem 1.5rem;
  }
}