/* Courses Page - Dark Glass Theme */

/* Hero Section */
.courses-hero {
  background: transparent;
  color: var(--text-color);
  padding: 150px 0 80px;
  position: relative;
}

.courses-hero::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(700px 350px at 50% 20%, rgba(0, 209, 255, 0.10), rgba(124, 92, 255, 0.08), rgba(0, 0, 0, 0) 60%);
  filter: blur(36px);
  z-index: 1; pointer-events: none;
}

/* Layout */
.courses-hero .container { position: relative; z-index: 2; }
.courses-hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }

/* Copy */
.hero-copy { text-align: left; }
.hero-title { margin-bottom: 14px; }
.gradient-text {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: 3rem;
  background-image: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color));
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: heroTitleSlide 8s linear infinite;
}

.subhead { font-size: 1.2rem; max-width: 720px; color: var(--muted-text); opacity: 0.95; }

/* Features */
.feature-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 4px; }
.feature-tags li {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px;
  background: var(--card-bg); border: 1px solid var(--card-border); color: var(--text-color);
}
.feature-tags li i { color: var(--primary-color); }

/* Actions */
.hero-actions { display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; }

/* Stats */
.hero-stats { display: flex; gap: 14px; margin-top: 22px; flex-wrap: wrap; }
.hero-stats .stat {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px;
  padding: 12px 16px; color: var(--muted-text);
}
.hero-stats .stat span {
  display: block; font-family: var(--heading-font); font-weight: 700; font-size: 1.2rem;
  background: var(--primary-gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
}

/* Visual */
.hero-visual { display: flex; justify-content: center; }
.visual-card {
  width: min(420px, 100%); padding: 22px; border-radius: 18px; position: relative;
  animation: floatUp 6s ease-in-out infinite;
}
.chart-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: var(--primary-gradient); color: #fff; box-shadow: 0 10px 24px var(--glow); }
.visual-title { margin-top: 12px; font-family: var(--heading-font); font-weight: 600; font-size: 1.2rem; color: #fff; }
.visual-legend { margin-top: 6px; display: flex; gap: 12px; color: var(--muted-text); font-size: 0.95rem; }
.visual-legend .up { color: #3CCB6F; }
.visual-legend .down { color: #F96565; }
.candles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 18px; align-items: end; height: 160px; }
.candles .bar { display: block; width: 100%; border-radius: 8px; background: linear-gradient(180deg, rgba(0,209,255,0.8), rgba(124,92,255,0.6)); box-shadow: 0 8px 20px var(--glow); }
.candles .b1 { height: 40%; animation: candlePulse 2.6s ease-in-out infinite; }
.candles .b2 { height: 70%; animation: candlePulse 3.2s ease-in-out infinite; }
.candles .b3 { height: 55%; animation: candlePulse 2.8s ease-in-out infinite; }
.candles .b4 { height: 80%; animation: candlePulse 3.6s ease-in-out infinite; }
.candles .b5 { height: 50%; animation: candlePulse 3.0s ease-in-out infinite; }

@keyframes heroTitleSlide { 0% { background-position: 0% 50%; } 100% { background-position: 200% 50%; } }
@keyframes floatUp { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes candlePulse { 0%, 100% { transform: scaleY(1); } 50% { transform: scaleY(1.06); } }

/* Filter Section */
/* .filter-section {
  background: var(--card-bg);
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  padding: 24px 0; box-shadow: var(--card-shadow);
  position: sticky; top: var(--header-height); z-index: 100;
}

.filter-chips { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

.filter-chip {
  background: transparent; border: 2px solid rgba(255,255,255,0.35); color: #fff;
  padding: 8px 20px; border-radius: 999px; font-weight: 500; cursor: pointer; transition: all var(--transition-fast);
}

.filter-chip:hover { background: rgba(255,255,255,0.08); }
.filter-chip.active { background: var(--primary-gradient); border-color: transparent; box-shadow: 0 8px 20px var(--glow); } */

/* Courses Section */
.courses-section { padding: 80px 0; background: transparent; }

.courses-section h2 {
  font-family: var(--heading-font); font-size: 2.5rem; text-align: center; margin-bottom: 15px; color: #fff;
}

.section-desc { text-align: center; max-width: 700px; margin: 0 auto 50px; color: var(--muted-text); font-size: 1.1rem; }

/* Courses Grid */
.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 30px; }

/* Course Card */
.course-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px; overflow: hidden;
  box-shadow: var(--card-shadow); transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  height: 100%; display: flex; flex-direction: column; color: var(--text-color);
}

.course-card:hover { transform: translateY(-8px); box-shadow: var(--card-hover-shadow); }

.course-thumbnail { position: relative; height: 200px; overflow: hidden; }
.course-thumbnail img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.course-card:hover .course-thumbnail img { transform: scale(1.08); }

/* Centered overlay with level & logo */
.course-overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; pointer-events: none;
}
.course-level {
  position: absolute; top: 12px; left: 12px; background: var(--primary-gradient); color: #fff; padding: 6px 16px; border-radius: 999px; font-size: 0.85rem; font-weight: 700; box-shadow: 0 8px 20px var(--glow);
}
.course-logo {
  position: relative;
  margin-top: 0; width: 92px; height: 92px; display: flex; align-items: center; justify-content: center; color: #fff;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(0, 209, 255, 0.18), rgba(124, 92, 255, 0.18));
  box-shadow: 0 14px 28px rgba(124, 92, 255, 0.35), inset 0 0 0 1px rgba(255,255,255,0.08);
  backdrop-filter: blur(4px);
  filter: drop-shadow(0 8px 18px rgba(0,0,0,0.35));
  animation: logoPulse 3.5s ease-in-out infinite;
}
.course-logo::after {
  content: '';
  position: absolute; inset: -10px; border-radius: 22px;
  background: radial-gradient(60% 60% at 50% 50%, rgba(0, 209, 255, 0.42), rgba(124, 92, 255, 0.36) 60%, rgba(0,0,0,0) 70%);
  filter: blur(16px);
  z-index: -1;
}
.course-logo i { font-size: 3rem; line-height: 1; }

/* Icon overlay uses font icons or inline SVG */
.course-logo { background-image: none; }
.course-logo i { display: inline-block; }

/* Free badge with stylish bounce */
.free-badge {
  position: absolute; top: 12px; right: 12px; padding: 6px 14px; border-radius: 999px; font-weight: 800; font-size: 0.85rem; letter-spacing: 0.5px;
  color: #fff; background: linear-gradient(135deg, #00d1ff, #7c5cff); box-shadow: 0 10px 24px rgba(124,92,255,0.35);
  animation: freeBounce 1.8s ease-in-out infinite;
}
@keyframes freeBounce {
  0%, 100% { transform: translateY(0); filter: drop-shadow(0 8px 20px rgba(0,0,0,0.35)); }
  50% { transform: translateY(-4px); filter: drop-shadow(0 12px 28px rgba(0,0,0,0.45)); }
}

/* Responsive icon sizing */
@media (max-width: 768px) {
  .course-logo { width: 76px; height: 76px; border-radius: 18px; }
  .course-logo i { font-size: 2.4rem; }
}

/* Gentle pulse for icon container */
@keyframes logoPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 14px 28px rgba(124, 92, 255, 0.35), inset 0 0 0 1px rgba(255,255,255,0.08);
  }
  50% {
    transform: scale(1.04);
    box-shadow: 0 22px 38px rgba(124, 92, 255, 0.45), inset 0 0 0 1px rgba(255,255,255,0.12);
  }
}

/* Why Choose Section */
.choose-section { padding: 80px 0; position: relative; }
.choose-section::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 350px at 50% 0%, rgba(0, 209, 255, 0.10), rgba(124, 92, 255, 0.08), rgba(0, 0, 0, 0) 60%);
  filter: blur(26px);
}
.choose-section .section-title { text-align: center; font-family: var(--heading-font); font-size: 2.2rem; margin-bottom: 28px; color: #fff; }
.choose-section .section-title::after { content: ''; display: block; width: 72px; height: 3px; margin: 8px auto 0; background: linear-gradient(90deg, var(--primary-color), var(--secondary-color)); border-radius: 999px; }
.choose-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.choose-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 18px; padding: 26px; text-align: center; box-shadow: var(--card-shadow, 0 8px 20px rgba(0,0,0,0.25)); transition: transform .25s ease, box-shadow .25s ease; }
.choose-card:hover { transform: translateY(-6px); box-shadow: var(--card-hover-shadow, 0 14px 32px rgba(0,0,0,0.35)); }
.choose-icon { width: 72px; height: 72px; margin: 0 auto 14px; display: flex; align-items: center; justify-content: center; border-radius: 18px; color: #fff; background: linear-gradient(135deg, rgba(0, 209, 255, 0.18), rgba(124, 92, 255, 0.18)); box-shadow: 0 12px 24px rgba(124,92,255,.35), inset 0 0 0 1px rgba(255,255,255,.08); animation: logoPulse 3.5s ease-in-out infinite; }
.choose-icon i { font-size: 1.8rem; }
.choose-card h3 { color: #fff; font-family: var(--heading-font); margin-bottom: 8px; }
.choose-card p { color: var(--muted-text); font-size: .95rem; }

/* Reviews Section */
.reviews-section { padding: 80px 0; position: relative; }
.reviews-section::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 350px at 50% 0%, rgba(0, 209, 255, 0.10), rgba(124, 92, 255, 0.08), rgba(0, 0, 0, 0) 60%);
  filter: blur(26px);
}
.reviews-section .section-title {
  text-align: center; font-family: var(--heading-font); font-size: 2.2rem; margin-bottom: 10px; color: #fff;
}
.reviews-section .section-title::after {
  content: ''; display: block; width: 72px; height: 3px; margin: 8px auto 0; background: linear-gradient(90deg, var(--primary-color), var(--secondary-color)); border-radius: 999px;
}
.reviews-section .section-desc { text-align: center; max-width: 700px; margin: 0 auto 40px; color: var(--muted-text); font-size: 1.05rem; }
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
.review-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 18px; padding: 24px; box-shadow: var(--card-shadow, 0 8px 20px rgba(0,0,0,0.25)); transition: transform .25s ease, box-shadow .25s ease; }
.review-card:hover { transform: translateY(-4px); box-shadow: var(--card-hover-shadow, 0 14px 32px rgba(0,0,0,0.35)); }
.review-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.avatar { width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; color: #fff; background: linear-gradient(135deg, rgba(0, 209, 255, 0.24), rgba(124, 92, 255, 0.24)); box-shadow: 0 8px 18px rgba(124,92,255,.35), inset 0 0 0 1px rgba(255,255,255,.08); }
.reviewer-name { color: #fff; font-family: var(--heading-font); font-size: 1.1rem; }
.reviewer-role { color: var(--muted-text); font-size: .9rem; }
.stars { color: #FFD36A; text-shadow: 0 2px 8px rgba(255, 211, 106, 0.25); }
.stars i { margin-left: 2px; }
.review-quote { color: var(--muted-text); font-size: 1rem; line-height: 1.6; }

/* CTA Banner */
.cta-section {
  padding: 80px 0;
  position: relative;
  background: transparent; /* remove animated gradient, keep page theme */
  border-radius: 20px;
  margin: 30px 20px;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 350px at 50% 0%, rgba(0, 209, 255, 0.12), rgba(124, 92, 255, 0.10), rgba(0, 0, 0, 0) 60%);
  filter: blur(30px);
}
.cta-content {
  position: relative; z-index: 1;
  text-align: center; color: #fff;
  max-width: 980px; margin: 0 auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--card-shadow, 0 20px 40px rgba(0,0,0,0.35));
  border-radius: 18px;
  padding: 36px 32px;
}
.cta-title {
  font-family: var(--heading-font);
  font-size: 2rem; margin-bottom: 8px;
}
.cta-title::after {
  content: ''; display: block; width: 64px; height: 3px;
  margin: 10px auto 0; border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}
.cta-sub { color: rgba(255,255,255,0.85); max-width: 800px; margin: 0 auto 22px; }
.cta-actions .btn { padding: 12px 28px; font-weight: 700; border-radius: 999px; }
.cta-actions .btn.btn-primary {
  box-shadow: 0 12px 28px rgba(124, 92, 255, 0.35);
  transition: transform var(--transition-fast, .2s), box-shadow var(--transition-fast, .2s);
}
.cta-actions .btn.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(124, 92, 255, 0.45); }

/* Responsive for new sections */
@media (max-width: 992px) {
  .choose-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
  .choose-grid { grid-template-columns: 1fr; }
  .cta-title { font-size: 1.6rem; }
  .cta-content { padding: 24px; }
}

.beginner-courses .course-level { background: linear-gradient(135deg, #3CCB6F, #22A95F); }
.intermediate-courses .course-level { background: linear-gradient(135deg, #FFB23C, #FF8A00); }
.advanced-courses .course-level { background: linear-gradient(135deg, #F96565, #D81E5B); }

.course-content { padding: 25px; display: flex; flex-direction: column; flex-grow: 1; }
.course-content h3 { font-family: var(--heading-font); font-size: 1.5rem; margin-bottom: 12px; color: #fff; }
.course-content p { margin-bottom: 18px; color: var(--muted-text); flex-grow: 1; }

.course-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font-size: 0.9rem; color: var(--muted-text); }
.course-duration { display: flex; align-items: center; color: var(--muted-text); }
.course-duration i { margin-right: 5px; }
.course-price { font-weight: 700; color: var(--primary-color); font-size: 1.2rem; }

.course-card .btn { align-self: flex-start; }

/* Hide filtered courses */
.course-card.hidden { display: none; }

/* Responsive Styles */
@media (max-width: 992px) {
  .courses-hero-grid { grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .feature-tags { justify-content: center; }
  .courses-hero h1 { font-size: 2.5rem; }
  .courses-section h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
  .courses-hero { padding: 120px 0 60px; }
  .gradient-text { font-size: 2.4rem; }
  .courses-hero h1 { font-size: 2rem; }
  .courses-hero p { font-size: 1rem; }
  .courses-section { padding: 60px 0; }
  .filter-chips { gap: 10px; }
  .filter-chip { padding: 6px 15px; font-size: 0.9rem; }
}

@media (max-width: 576px) {
  .courses-grid { grid-template-columns: 1fr; }
  .course-content h3 { font-size: 1.3rem; }
  .reviews-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { flex: 1 1 100%; }
}