*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#ffffff;
  --bg2:#f8f9fa;
  --bg3:#f1f3f5;
  --primary:#2563eb;
  --primary-hover:#1d4ed8;
  --secondary:#8b5cf6;
  --text:#111827;
  --text2:#4b5563;
  --border:#e5e7eb;
  --card:#ffffff;
}

body{
  font-family:'Inter',sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  line-height:1.5;
  overflow-x:hidden;
}

.hidden{display:none!important}
.gradient-text{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* ── PRELOADER ── */
.preloader{
  position:fixed;
  inset:0;
  background:#ffffff;
  z-index:9999;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:opacity 0.5s ease, visibility 0.5s ease;
}
.preloader.fade-out{
  opacity:0;
  visibility:hidden;
}
#preloaderVideo{
  display:block;
  width:100vw;
  height:100vh;
  object-fit:contain;
  background:transparent;
  border:none;
  outline:none;
  padding:0;
  margin:0;
  mix-blend-mode:multiply;
}

/* ── BUTTONS ── */
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border:none;
  border-radius:8px;
  padding:10px 20px;
  color:#fff;
  font-weight:600;
  cursor:pointer;
  transition:opacity 0.2s,transform 0.1s;
}
.btn-primary:hover{opacity:0.9;transform:translateY(-1px)}
.btn-outline{
  background:transparent;
  border:1px solid var(--border);
  border-radius:8px;
  padding:10px 20px;
  color:var(--text);
  font-weight:600;
  cursor:pointer;
  transition:all 0.2s;
}
.btn-outline:hover{
  background:var(--bg2);
  border-color:var(--text2);
}
.btn-lg{padding:14px 28px;font-size:1.1rem}
.full-width{width:100%}

/* ── NAVBAR ── */
.navbar{
  position:fixed;
  top:0;
  left:0;
  right:0;
  background:rgba(255,255,255,0.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  z-index:100;
}
.nav-container{
  max-width:1200px;
  margin:0 auto;
  padding:16px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
}
.logo-icon-svg{width:36px;height:36px}
.brand-text{
  font-family:'Outfit',sans-serif;
  font-weight:800;
  font-size:1.4rem;
  color:var(--text);
}
.nav-links{display:flex;gap:24px}
.nav-links a{
  text-decoration:none;
  color:var(--text2);
  font-weight:500;
  transition:color 0.2s;
}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.user-name{font-weight:600;color:var(--text)}

/* ── HAMBURGER MENU ── */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.menu-toggle span {
  width: 26px;
  height: 2px;
  background-color: var(--text);
  border-radius: 4px;
  transition: 0.3s;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ── HERO ── */
.hero{
  padding:120px 24px 60px;
  max-width:1200px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
  min-height:80vh;
}
.hero-title{
  font-size:3.5rem;
  font-weight:800;
  line-height:1.2;
  margin-bottom:20px;
}
.hero-subtitle{
  font-size:1.1rem;
  color:var(--text2);
  margin-bottom:32px;
  max-width:480px;
}
.hero-image{
  position:relative;
  display:flex;
  justify-content:center;
  align-items:center;
}
.hero-illustration{
  width:100%;
  max-width:500px;
}
.floating-card{
  position:absolute;
  background:var(--card);
  padding:12px 20px;
  border-radius:12px;
  box-shadow:0 10px 30px rgba(0,0,0,0.1);
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:600;
  font-size:0.9rem;
  animation:float 6s ease-in-out infinite;
}
.card-1{top:10%;left:0;animation-delay:0s}
.card-2{bottom:15%;right:0;animation-delay:2s}
.card-3{top:40%;right:-5%;animation-delay:4s}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-15px)}
}

/* ── SESSIONS ── */
.sessions-section{
  max-width:1200px;
  margin:0 auto;
  padding:60px 24px;
}
.section-header{
  text-align:center;
  margin-bottom:40px;
}
.section-header h2{
  font-size:2.5rem;
  font-weight:800;
  margin-bottom:12px;
}
.section-header p{
  color:var(--text2);
  font-size:1.1rem;
}
.filters{
  display:flex;
  gap:16px;
  margin-bottom:32px;
  justify-content:center;
}
.search-input,.select-input{
  padding:12px 16px;
  border:1px solid var(--border);
  border-radius:8px;
  background:var(--bg2);
  color:var(--text);
  font-size:0.95rem;
  outline:none;
}
.search-input{width:300px}
.search-input:focus,.select-input:focus{border-color:var(--primary)}

.sessions-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:24px;
}
.session-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:24px;
  transition:all 0.3s ease;
  cursor:pointer;
  display:flex;
  flex-direction:column;
  height:100%;
}
.session-card:hover{
  transform:translateY(-5px);
  box-shadow:0 12px 40px rgba(0,0,0,0.08);
  border-color:var(--primary);
}
.sc-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  margin-bottom:16px;
}
.badge{
  font-size:0.75rem;
  padding:4px 10px;
  border-radius:20px;
  background:var(--bg3);
  color:var(--primary);
  font-weight:600;
}
.sc-title{
  font-size:1.2rem;
  font-weight:700;
  margin-bottom:8px;
  line-height:1.4;
}
.sc-desc{
  font-size:0.9rem;
  color:var(--text2);
  margin-bottom:20px;
  flex-grow:1;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.sc-footer{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:0.85rem;
  color:var(--text2);
  padding-top:16px;
  border-top:1px solid var(--border);
}

/* ── MODALS ── */
.modal-overlay{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,0.4);
  backdrop-filter:blur(4px);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:200;
  padding:20px;
}
.modal{
  background:var(--card);
  border-radius:20px;
  width:100%;
  max-width:440px;
  box-shadow:0 24px 80px rgba(0,0,0,0.1);
  overflow:hidden;
}
.modal-lg{max-width:700px;max-height:90vh;overflow-y:auto;}
.modal-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:20px 24px;
  border-bottom:1px solid var(--border);
}
.modal-header h3{font-size:1.2rem;font-weight:700}
.modal-close{
  background:none;
  border:none;
  font-size:1.2rem;
  color:var(--text2);
  cursor:pointer;
  transition:color 0.2s;
}
.modal-close:hover{color:var(--text)}

/* Auth Tabs */
.auth-tabs{
  display:flex;
  border-bottom:1px solid var(--border);
}
.tab-btn{
  flex:1;
  background:none;
  border:none;
  padding:16px;
  font-weight:600;
  color:var(--text2);
  cursor:pointer;
  border-bottom:2px solid transparent;
  transition:all 0.2s;
}
.tab-btn.active{
  color:var(--primary);
  border-bottom-color:var(--primary);
}

.auth-form{padding:24px}
.form-group{margin-bottom:16px}
.form-group label{
  display:block;
  font-size:0.85rem;
  font-weight:600;
  margin-bottom:8px;
  color:var(--text2);
}
.form-group input{
  width:100%;
  padding:12px;
  border:1px solid var(--border);
  border-radius:8px;
  background:var(--bg2);
  color:var(--text);
  outline:none;
  transition:border-color 0.2s;
}
.form-group input:focus{border-color:var(--primary)}

.error-msg{
  color:#ef4444;
  font-size:0.85rem;
  margin-bottom:16px;
  padding:8px 12px;
  background:#fef2f2;
  border-radius:8px;
  border:1px solid #fecaca;
}

/* Session Details */
.modal-body{padding:24px}
.session-meta{
  display:flex;
  gap:12px;
  align-items:center;
  margin-bottom:20px;
  flex-wrap:wrap;
}
.instructor,.duration{
  font-size:0.9rem;
  color:var(--text2);
  display:flex;
  align-items:center;
  gap:6px;
}
.instructor::before{content:'👤'}
.duration::before{content:'⏱️'}
.session-desc{
  font-size:1rem;
  line-height:1.6;
  margin-bottom:32px;
  color:var(--text);
}

.zoom-section,.files-section{
  margin-top:24px;
  padding-top:24px;
  border-top:1px solid var(--border);
}
.zoom-section h4,.files-section h4{
  font-size:1.1rem;
  font-weight:700;
  margin-bottom:16px;
}
.zoom-card{
  display:flex;
  align-items:center;
  gap:16px;
  background:#eff6ff;
  border:1px solid #bfdbfe;
  border-radius:12px;
  padding:20px;
}
.zoom-icon{
  font-size:2rem;
}
.zoom-info p{
  margin-bottom:12px;
  color:#1e3a8a;
}

.files-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.file-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 16px;
  background:var(--bg2);
  border:1px solid var(--border);
  border-radius:8px;
}
.file-info{
  display:flex;
  align-items:center;
  gap:12px;
}
.file-name{font-weight:600;font-size:0.9rem;}
.file-size{font-size:0.8rem;color:var(--text2);}
.btn-download{
  color:var(--primary);
  text-decoration:none;
  font-weight:600;
  font-size:0.85rem;
  padding:6px 12px;
  background:var(--bg3);
  border-radius:6px;
  transition:background 0.2s;
}
.btn-download:hover{background:var(--border)}

.loading-spinner{
  width:40px;
  height:40px;
  border:3px solid var(--border);
  border-top-color:var(--primary);
  border-radius:50%;
  animation:spin 1s linear infinite;
  margin:40px auto;
  grid-column:1/-1;
}

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

/* ── CLICK ANIMATION ── */
.click-note {
  position: fixed;
  width: 70px;
  height: auto;
  pointer-events: none;
  z-index: 10000;
  animation: floatNote 1.2s ease-out forwards;
}

@keyframes floatNote {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(0.4) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(1) rotate(var(--tr));
  }
}

/* ── TIMERS ── */
.offer-timer {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 10px;
}
.offer-timer .cd-box {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  padding: 6px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  min-width: 50px;
}
.offer-timer .cd-val { font-size: 1.2rem; font-weight: 800; line-height: 1; }
.offer-timer .cd-lbl { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; opacity: 0.9; }

.session-timer-wrap {
  margin-bottom: 16px;
}
.session-timer-title {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.session-timer {
  display: flex;
  gap: 8px;
}
.session-timer .cd-box {
  background: var(--bg2);
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: 8px;
  padding: 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.session-timer .cd-val { font-size: 1.2rem; font-weight: 800; line-height: 1; }
.session-timer .cd-lbl { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; font-weight: 600; color: var(--text2); }

@media (max-width:768px){
  .navbar {
    position: fixed; /* Keep it fixed but manage height */
  }
  .nav-container {
    flex-wrap: wrap;
    padding: 16px 20px;
  }
  .menu-toggle { display: flex; }
  
  .nav-links, .nav-actions {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 20px;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    margin-top: 15px;
  }
  
  .nav-container.active .nav-links,
  .nav-container.active .nav-actions {
    display: flex;
  }
  
  .hero{
    grid-template-columns:1fr;
    text-align:center;
    padding-top:120px;
  }
  .hero-subtitle{margin:0 auto 32px}
  .hero-image{margin-top:40px}
  .brand-text { font-size: 1.2rem; }
  .logo-icon-svg { width: 30px; height: 30px; }
  .btn-primary, .btn-outline {
    width: 100%;
    text-align: center;
  }
}