*,*::before,*::after{box-sizing:border-box;}
/* Lessons page — designed to match /shared/app/layout.css */

:root{
  --ink: #0f172a;
  --muted: #6b7280;
  --primary: #fbbf24;
  --primary-strong: #f59e0b;
  --border: #e5e7eb;
  --card: #ffffff;
  --soft: #f9fafb;
  --shadow: 0 14px 34px rgba(15, 23, 42, 0.10);
  --shadow2: 0 10px 26px rgba(15, 23, 42, 0.08);
}

html{
  margin: 0;
  padding: 0;
  background: #111827;
}

body.lessons-page{
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 8% -10%, rgba(251,191,36,0.22), transparent 60%),
    radial-gradient(900px 420px at 92% 0%, rgba(59,130,246,0.14), transparent 55%),
    linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #ffffff 100%);
}

/* =========================================
   HERO & VIDEO SLIDER FIXES (START)
   ========================================= */

body.lessons-page main.hero.lessons-hero{
  position: relative;
  margin: 10px 0 0;
  /* Increased top padding slightly for better mobile clearance */
  padding: 80px 16px 54px; 
  min-height: 520px;
  overflow: hidden;
  background: transparent;

  display: flex;
  flex-direction: column;
  gap: 18px;
}

body.lessons-page .hero-bg{
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

body.lessons-page #heroBgImg{
  position: absolute;
  inset: -8%;
  width: 116%;
  height: 116%;
  object-fit: cover;
  filter: blur(28px) saturate(1.15) brightness(0.7);
  transform: scale(1.08);
}

body.lessons-page .hero-bg::after{
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1100px 520px at 50% 45%, rgba(255,255,255,0.14), rgba(0,0,0,0.55) 55%, rgba(0,0,0,0.76));
}

body.lessons-page .lessons-hero-inner{
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%; /* Ensure full width availability */
}

.hero-topbar{
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.hero-copy h2{
  margin: 0 0 10px;
  color: #ffffff;
  font-weight: 900;
  letter-spacing: 0.2px;
}

.hero-copy p{
  margin: 0;
  color: rgba(255,255,255,0.78);
  font-weight: 650;
  max-width: 60ch;
}

.hero-back{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(17,24,39,0.45);
  border: 1px solid rgba(255,255,255,0.18);
  color: #ffffff;
  font-weight: 850;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: transform 160ms ease, background 160ms ease;
}

.hero-back:hover{
  background: rgba(17,24,39,0.62);
  transform: translateY(-1px);
}

.hero-back i{
  width: 18px;
  height: 18px;
}

/* --- Slider Core --- */
.cert-slider{
  position: relative;
  width: 100%;
}

.slider-viewport{
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  border-radius: 22px;
  cursor: grab;
  user-select: none;
  padding: 10px 0; /* Vertical padding to prevent shadow clipping */
}

.slider-viewport.dragging{
  cursor: grabbing;
}

.slider-viewport::-webkit-scrollbar{
  height: 0;
  display: none;
}

.slider-viewport.locked{
  overflow: hidden;
  cursor: default;
}

.slider-track{
  display: flex;
  gap: 20px;
  /* Centering logic: pad the sides so the first item can be in the center */
  padding: 0 max(20px, calc(50% - 300px)); 
  width: max-content;
}

/* --- Slide Item --- */
.cert-slide{
  position: relative;
  /* Fixed width on desktop, responsive on mobile */
  width: 600px; 
  max-width: 85vw; /* Never wider than screen */
  aspect-ratio: 16 / 9; /* Standard video ratio */
  
  border-radius: 18px;
  scroll-snap-align: center;
  background: #000; /* Black bars for letterboxing */
  border: 1px solid rgba(255,255,255,0.20);
  box-shadow: 0 30px 90px rgba(0,0,0,0.40);
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: transform 0.3s ease, border-color 0.3s ease, opacity 0.3s ease;
}

.cert-slide:hover{
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}

.cert-slide.is-focused{
  transform: scale(1.02);
  border-color: var(--primary);
  box-shadow: 0 40px 140px rgba(0,0,0,0.6);
  z-index: 10;
  opacity: 1 !important;
}

/* --- Media (Images & Video) --- */
.cert-media,
.cert-img,
.cert-video{
  display: block;
  width: 100%;
  height: 100%;
  /* FIXED: Contain ensures the full certificate/video is seen, never cropped */
  object-fit: contain; 
  background: #000;
}

.cert-caption{
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.15);
  color: #ffffff;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.2px;
  pointer-events: none; /* Let clicks pass through to video */
}

.sound-badge{
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
  pointer-events: none;
  z-index: 5;
}

/* --- Controls --- */
.slider-arrow{
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(15,23,42,0.6);
  color: #ffffff;
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 20;
  backdrop-filter: blur(10px);
  transition: transform 160ms ease, background 160ms ease;
}

.slider-arrow:hover{
  background: var(--primary);
  color: var(--ink);
  transform: translateY(-50%) scale(1.1);
}

.slider-arrow.prev{ left: 10px; }
.slider-arrow.next{ right: 10px; }

.slider-arrow i{ width: 20px; height: 20px; }

.slider-meta{
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.slider-dots{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.slider-dots button{
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 0;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  padding: 0;
  transition: transform 160ms ease, background 160ms ease;
}

.slider-dots button[aria-current="true"]{
  background: var(--primary);
  transform: scale(1.4);
}

.slider-toggle{
  /* Hidden for cleaner UI, handled by auto-pause logic */
  display: none; 
}

/* --- Hero Mobile Responsivity --- */
@media (max-width: 768px){
  body.lessons-page main.hero.lessons-hero{
    padding-top: 70px;
    padding-bottom: 30px;
    min-height: auto;
  }

  .hero-copy h2 { font-size: 28px; }
  .hero-copy p { font-size: 14px; }

  /* Mobile Track: Reset padding calculation */
  .slider-track {
    padding: 0 20px; 
    gap: 12px;
  }

  /* Mobile Slide: Almost full width */
  .cert-slide {
    width: 85vw; 
    max-width: 400px;
    scroll-snap-align: center;
  }
  
  .slider-arrow {
    width: 36px;
    height: 36px;
    background: rgba(15,23,42,0.8);
  }
  
  .slider-arrow.prev { left: 4px; }
  .slider-arrow.next { right: 4px; }
}

/* =========================================
   HERO FIXES (END)
   ========================================= */


/* =========================================
   REST OF THE PAGE (UNCHANGED)
   ========================================= */

.mentor-card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow2);
}

.mentor-photo{
  width: 84px;
  height: 84px;
  border-radius: 999px;
  object-fit: cover;
  border: 3px solid rgba(251,191,36,0.35);
}

.mentor-meta{
  min-width: 0;
}

.mentor-name{
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}

.mentor-sub{
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.mentor-hint{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

/* Two-column layout */
.lessons-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 18px;
  align-items: start;
}

.left-panel,
.right-panel{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  box-shadow: var(--shadow2);
}

.panel-head{
  margin-bottom: 12px;
}

.panel-title{
  margin: 0;
  font-size: 16px;
  color: var(--ink);
}

.panel-desc{
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* Courses list */
.courses{
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Top-to-bottom layout: keep the lessons list tidy on large screens */
.left-panel .courses{
  max-height: 420px;
  overflow: auto;
  padding-right: 4px;
}

.course-card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  position: relative;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.course-card:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow2);
}

.course-card.selected{
  border-color: rgba(251,191,36,0.75);
  box-shadow: 0 0 0 4px rgba(251,191,36,0.16);
}

.course-title{
  font-weight: 800;
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 6px;
}

.course-desc{
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 12px;
}

.course-card-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-right: 56px;
}

.course-card .save-module-btn{
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 2;
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(15,23,42,.08);
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(241,245,249,.96));
  color: #64748b;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 28px rgba(15,23,42,.14);
}

.course-card .save-module-btn:hover{
  transform: translateY(-1px);
  filter: none;
  box-shadow: 0 18px 32px rgba(15,23,42,.18);
}

.course-card .save-module-btn.is-liked{
  background: linear-gradient(180deg, #fff1f2, #ffe4e6);
  color: #dc2626;
  border-color: rgba(248,113,113,.35);
}

.save-module-btn__heart{
  font-size: 22px;
  line-height: 1;
}

.start-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border: 0;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.start-btn:hover{
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.start-btn:disabled{
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.report-btn{
  background: #374151;
}

.danger-btn{
  background: #b91c1c;
}

.add-card{
  border-style: dashed;
  color: var(--muted);
  text-align: center;
}

/* Video + tabs */
.video-section{
  display: none;
  margin-top: 8px;
}

.video-section.open{
  display: block;
}

.video-scrollable{
  margin-bottom: 14px;
}

.video-container{
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: auto;
  max-height: min(88vh, 860px);

  border: 1px solid var(--border);
}

.video-container iframe{
  width: 100%;
  height: 100%;
  border: 0;
}

.video-container video{
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: #000;
}

.no-video-msg{
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
}

.tabs{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 14px;
}

.tab{
  padding: 9px 12px;
  border-radius: 999px;
  background: #f3f4f6;
  border: 1px solid rgba(15,23,42,0.08);
  color: #111827;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  user-select: none;
}

.tab.active{
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.content{
  display: none;
}

.content.active{
  display: block;
}

.list-item a{
  color: #1d4ed8;
}

/* Comment card */
.content-card{
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  background: #ffffff;
}

.muted{ color: var(--muted); font-size: 13px; }

.buttonholder{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.soft-hr{
  margin: 18px 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.feedback-scroll-container{
  max-height: 320px;
  overflow: auto;
  padding-right: 6px;
}

.feedback-card{
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  margin-bottom: 10px;
  background: #fff;
}

.feedback-header{
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
  flex-wrap: wrap;
}

.feedback-name{ font-weight: 800; font-size: 13px; }
.feedback-group{ color: var(--muted); font-size: 12px; }
.feedback-time{ color: var(--muted); font-size: 12px; }
.feedback-message{ margin-top: 8px; color: #111827; font-size: 13px; line-height: 1.6; }

/* Inputs match site */
.input-field{
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 12px;
  outline: none;
  font-size: 14px;
  background: #fff;
}

.input-field:focus{
  border-color: rgba(251,191,36,0.80);
  box-shadow: 0 0 0 4px rgba(251,191,36,0.18);
}

.label{
  display: block;
  margin-top: 12px;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 800;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

/* Modal */
.modal-overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  z-index: 3000;
}

.modal-overlay.open{
  display: flex;
}

.modal{
  width: min(980px, 100%);
  background: #fff;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr;
  overflow: auto;
  max-height: min(88vh, 860px);

}

.modal .left,
.modal .right{
  padding: 16px;
}

.modal .right{
  background: #f9fafb;
  border-left: 0; border-top: 1px solid var(--border); }

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

.icon-btn{
  border: 1px solid var(--border);
  background: #fff;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 900;
}
.lessons-wrap{
  margin: 50px;
}
.modal-actions{
  margin-top: 14px;
  display:flex;
  gap: 10px;
}

.modal-status{
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

.upload-progress{
  margin-top: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(251, 191, 36, 0.08), rgba(255, 255, 255, 0.96));
}

.upload-progress-head{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 800;
  color: var(--ink);
}

.upload-progress-track{
  margin-top: 10px;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(15, 23, 42, 0.10);
}

.upload-progress-fill{
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 48%, #60a5fa 100%);
  transition: width 0.18s ease;
}

.upload-progress-meta{
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.upload-dropzone{
  margin-top: 4px;
  border: 1px dashed rgba(15, 23, 42, 0.18);
  border-radius: 16px;
  padding: 16px;
  background:
    linear-gradient(135deg, rgba(251, 191, 36, 0.08), rgba(59, 130, 246, 0.05)),
    #fff;
  cursor: pointer;
}

.upload-dropzone:focus{
  outline: none;
  border-color: rgba(251, 191, 36, 0.8);
  box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.14);
}

.upload-dropzone.dragover{
  border-color: rgba(251, 191, 36, 0.95);
  background:
    linear-gradient(135deg, rgba(251, 191, 36, 0.16), rgba(59, 130, 246, 0.10)),
    #fff;
}

.upload-dropzone-title{
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
}

.upload-dropzone-copy{
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.upload-dropzone-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.upload-file-count{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.upload-access-hint{
  margin: 8px 0 0;
  color: #92400e;
  font-size: 12px;
  line-height: 1.55;
}

.upload-dropzone.is-disabled{
  cursor: not-allowed;
  opacity: 0.72;
  border-style: solid;
  background:
    linear-gradient(135deg, rgba(148, 163, 184, 0.12), rgba(15, 23, 42, 0.04)),
    #f8fafc;
}

.upload-dropzone.is-disabled .upload-dropzone-actions{
  pointer-events: none;
}

.preview-area{
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  padding: 12px;
  max-height: 520px;
  overflow: auto;
}

.preview-item{
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: #fff;
  margin-bottom: 10px;
}

.modal-tip{
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.55;
}

.modal-tip a{ color: #1d4ed8; text-decoration: none; font-weight: 800; }

@media (max-width: 980px){
  .left-panel .courses{ max-height: none; }
  .lessons-grid{ grid-template-columns: 1fr; }
  .modal{ grid-template-columns: 1fr; }
  .modal .right{ border-left: 0; border-top: 1px solid var(--border); }
}

@media (max-width: 520px){
  .lessons-wrap{margin: 10px;}
  .mentor-card{ flex-direction: column; text-align: center; }
  .buttonholder{ flex-direction: column; align-items: stretch; }
  .buttonholder .start-btn{ width: 100%; }
}