@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  /* Colors */
  --epl-primary: #4F46E5; /* Indigo 600 */
  --epl-primary-dark: #4338CA; /* Indigo 700 */
  --epl-primary-light: #818CF8; /* Indigo 400 */
  
  --epl-secondary: #10B981; /* Emerald 500 */
  --epl-secondary-dark: #059669; /* Emerald 600 */

  --epl-accent: #F59E0B; /* Amber 500 */
  --epl-accent-dark: #D97706; /* Amber 600 */
  
  --epl-danger: #EF4444; /* Red 500 */

  --epl-gray-50: #F9FAFB;
  --epl-gray-100: #F3F4F6;
  --epl-gray-200: #E5E7EB;
  --epl-gray-300: #D1D5DB;
  --epl-gray-500: #6B7280;
  --epl-gray-700: #374151;
  --epl-gray-800: #1F2937;
  --epl-gray-900: #111827;
  
  --epl-white: #FFFFFF;

  /* Fonts */
  --epl-font-base: 'Inter', 'Noto Sans JP', sans-serif;
  --epl-font-heading: 'Inter', 'Noto Sans JP', sans-serif;

  /* Spacing & Layout */
  --epl-radius: 0.5rem;
  --epl-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --epl-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --epl-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  --epl-transition: all 0.3s ease;
}

/* Base Styles */
.epl-lms-container {
  font-family: var(--epl-font-base);
  color: var(--epl-gray-800);
}

/* ----------------
   Course List Grid
   ---------------- */
.epl-lms-course-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 1rem 0;
}

.epl-lms-course-item {
  background: var(--epl-white);
  border: 1px solid var(--epl-gray-200);
  border-radius: var(--epl-radius);
  overflow: hidden;
  transition: var(--epl-transition);
  box-shadow: var(--epl-shadow);
  display: flex;
  flex-direction: column;
}

.epl-lms-course-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--epl-shadow-lg);
  border-color: var(--epl-primary-light);
}

.epl-lms-course-thumbnail {
  width: 100%;
  height: 160px;
  background-color: var(--epl-gray-100);
  overflow: hidden;
}

.epl-lms-course-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.epl-lms-course-item:hover .epl-lms-course-thumbnail img {
  transform: scale(1.05);
}

.epl-lms-course-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.epl-lms-course-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  color: var(--epl-gray-900);
}

.epl-lms-course-title a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

.epl-lms-course-title a:hover {
  color: var(--epl-primary);
}

.epl-lms-course-excerpt {
  font-size: 0.875rem;
  color: var(--epl-gray-500);
  margin-bottom: 1rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ----------------
   Progress Bar
   ---------------- */
.epl-lms-progress-wrapper {
  background-color: var(--epl-gray-200);
  border-radius: 9999px;
  height: 0.5rem;
  overflow: hidden;
  margin-top: auto; /* Push to bottom */
}

.epl-lms-progress-bar {
  background-color: var(--epl-secondary);
  height: 100%;
  border-radius: 9999px;
  transition: width 1s ease-in-out;
}

/* ----------------
   Buttons
   ---------------- */
.btn-epl-lms,
.epl-lms-checkout-button,
.epl-lms-submit-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: var(--epl-radius);
  cursor: pointer;
  transition: var(--epl-transition);
  border: none;
  line-height: 1;
}

/* Primary Button */
.btn-epl-lms-primary,
.epl-lms-submit-btn {
  background-color: var(--epl-primary);
  color: var(--epl-white);
  box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.4);
}

.btn-epl-lms-primary:hover,
.epl-lms-submit-btn:hover {
  background-color: var(--epl-primary-dark);
  color: var(--epl-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 8px -1px rgba(79, 70, 229, 0.5);
}

/* Checkout Button (Accent) */
.epl-lms-checkout-button {
  background-color: var(--epl-accent);
  color: var(--epl-white);
  width: 100%;
  max-width: 320px;
  font-size: 1.125rem;
  box-shadow: 0 4px 6px -1px rgba(245, 158, 11, 0.4);
}

.epl-lms-checkout-button:hover {
  background-color: var(--epl-accent-dark);
  color: var(--epl-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 10px -1px rgba(245, 158, 11, 0.5);
}

/* Lesson Complete Button */
#epl-lms-mark-complete {
  background-color: var(--epl-gray-200);
  color: var(--epl-gray-700);
  margin-top: 2rem;
  width: 100%;
  max-width: 240px;
}

#epl-lms-mark-complete.completed {
  background-color: var(--epl-secondary);
  color: var(--epl-white);
  cursor: default;
  pointer-events: none; /* Disable click */
}

#epl-lms-mark-complete:not(.completed):hover {
  background-color: var(--epl-gray-300);
}

/* ----------------
   Opt-in Form
   ---------------- */
.epl-lms-optin-form-wrapper {
  background-color: var(--epl-white);
  padding: 2rem;
  border-radius: var(--epl-radius);
  border: 1px solid var(--epl-gray-200);
  box-shadow: var(--epl-shadow-lg);
  max-width: 480px;
  margin: 2rem auto;
}

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

.epl-lms-form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--epl-gray-700);
  margin-bottom: 0.5rem;
}

.epl-lms-form-group input[type="text"],
.epl-lms-form-group input[type="email"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--epl-gray-300);
  border-radius: var(--epl-radius);
  font-size: 1rem;
  transition: border-color 0.2s;
  box-sizing: border-box; /* Fix width issues */
}

.epl-lms-form-group input[type="text"]:focus,
.epl-lms-form-group input[type="email"]:focus {
  border-color: var(--epl-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.epl-lms-submit-btn {
  width: 100%;
  margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 640px) {
  .epl-lms-course-list {
    grid-template-columns: 1fr;
  }
}