/* =========================================================
   ครูผู้ช่วย Planner 30 วัน - Premium Theme
   Navy + Gold | Dark Mode | Modern UI
   ========================================================= */

:root{
  --navy-900:#0A1628;
  --navy-800:#0F1F3D;
  --navy-700:#162B52;
  --navy-600:#1E3A6F;
  --navy-500:#2A4A85;
  --gold-500:#D4A437;
  --gold-400:#E8B94A;
  --gold-300:#F2CD6B;
  --gold-200:#F5DC8E;
  --bg:#F4F6FB;
  --surface:#FFFFFF;
  --text:#0F1F3D;
  --text-soft:#4A5878;
  --border:#E1E7F0;
  --success:#16A34A;
  --danger:#DC2626;
  --warning:#F59E0B;
  --shadow-sm:0 2px 6px rgba(15,31,61,.06);
  --shadow-md:0 8px 24px rgba(15,31,61,.10);
  --shadow-lg:0 20px 50px rgba(15,31,61,.15);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --transition:.25s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"]{
  --bg:#06101F;
  --surface:#0F1F3D;
  --text:#F1F5FB;
  --text-soft:#9BAACB;
  --border:#1E3A6F;
  --shadow-sm:0 2px 6px rgba(0,0,0,.3);
  --shadow-md:0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 20px 50px rgba(0,0,0,.45);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Sarabun','Prompt',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  min-height:100vh;
  transition:background var(--transition),color var(--transition);
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ========== TOPBAR ========== */
.topbar{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));
  color:#fff;
  box-shadow:var(--shadow-md);
  border-bottom:2px solid var(--gold-500);
}
.topbar-inner{
  max-width:1400px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.brand-badge{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--gold-400),var(--gold-500));
  display:grid;place-items:center;color:var(--navy-900);
  font-size:20px;box-shadow:0 4px 12px rgba(212,164,55,.4);
}
.brand-text small{display:block;font-weight:400;color:var(--gold-300);font-size:11px;letter-spacing:.5px}

.nav-links{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-links a{
  padding:8px 14px;border-radius:10px;font-size:14px;font-weight:500;
  color:#D8E1F2;transition:all var(--transition);
}
.nav-links a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-links a.active{background:var(--gold-500);color:var(--navy-900);font-weight:700}

.topbar-actions{display:flex;gap:8px;align-items:center}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.08);color:#fff;
  display:grid;place-items:center;transition:all var(--transition);
}
.icon-btn:hover{background:var(--gold-500);color:var(--navy-900);transform:rotate(15deg)}

.menu-toggle{display:none}

@media (max-width:920px){
  .menu-toggle{display:grid}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;
    background:var(--navy-800);padding:12px;gap:4px;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:all var(--transition);
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{padding:12px 16px}
}

/* ========== CONTAINER ========== */
.container{max-width:1400px;margin:0 auto;padding:24px 20px}
.page-title{font-size:28px;font-weight:800;margin-bottom:6px}
.page-sub{color:var(--text-soft);margin-bottom:24px}

/* ========== CARDS ========== */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.card-title{font-weight:700;font-size:16px}

/* ========== BUTTONS ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:12px;font-weight:600;font-size:14px;
  transition:all var(--transition);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--gold-400),var(--gold-500));
  color:var(--navy-900);
  box-shadow:0 4px 14px rgba(212,164,55,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(212,164,55,.5)}
.btn-navy{background:linear-gradient(135deg,var(--navy-700),var(--navy-600));color:#fff}
.btn-navy:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(15,31,61,.3)}
.btn-ghost{background:transparent;color:var(--text);border:1.5px solid var(--border)}
.btn-ghost:hover{background:var(--bg);border-color:var(--gold-500)}
.btn-block{width:100%}
.btn-sm{padding:7px 14px;font-size:13px;border-radius:9px}

/* ========== STATS GRID ========== */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:16px;margin-bottom:24px;
}
.stat-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;position:relative;overflow:hidden;
  transition:all var(--transition);
}
.stat-card::before{
  content:"";position:absolute;top:-50%;right:-50%;
  width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,var(--gold-300) 0%,transparent 70%);
  opacity:.15;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat-icon{
  width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--navy-700),var(--navy-500));
  display:grid;place-items:center;color:var(--gold-300);
  font-size:20px;margin-bottom:12px;
}
.stat-label{color:var(--text-soft);font-size:13px;margin-bottom:4px}
.stat-value{font-size:28px;font-weight:800;color:var(--text)}
.stat-sub{font-size:12px;color:var(--success);margin-top:4px}

/* ========== PROGRESS ========== */
.progress{
  width:100%;height:10px;background:var(--border);
  border-radius:99px;overflow:hidden;margin-top:8px;
}
.progress-bar{
  height:100%;
  background:linear-gradient(90deg,var(--gold-400),var(--gold-500));
  border-radius:99px;transition:width .8s ease;
}
.progress-thin{height:6px}

/* ========== GRID LAYOUTS ========== */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.col-8{grid-column:span 8}
.col-4{grid-column:span 4}
.col-6{grid-column:span 6}

@media (max-width:980px){
  .grid-2,.grid-3{grid-template-columns:1fr}
  .col-8,.col-4,.col-6{grid-column:span 12}
}

/* ========== HERO (LANDING) ========== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--navy-900) 0%,var(--navy-700) 60%,var(--navy-600) 100%);
  color:#fff;padding:80px 20px 100px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 20% 30%,rgba(212,164,55,.15) 0%,transparent 40%),
    radial-gradient(circle at 80% 70%,rgba(212,164,55,.1) 0%,transparent 40%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(212,164,55,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(212,164,55,.04) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.hero-inner{
  position:relative;max-width:1200px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:99px;
  background:rgba(212,164,55,.15);color:var(--gold-300);
  font-size:13px;font-weight:600;margin-bottom:18px;
  border:1px solid rgba(212,164,55,.3);
}
.hero-title{
  font-size:48px;font-weight:900;line-height:1.15;margin-bottom:18px;
  background:linear-gradient(135deg,#fff 0%,var(--gold-300) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-subtitle{font-size:18px;color:#C9D4EB;margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:40px;padding-top:30px;border-top:1px solid rgba(255,255,255,.1)}
.hero-stat strong{display:block;font-size:24px;font-weight:800;color:var(--gold-300)}
.hero-stat span{font-size:13px;color:#9BAACB}

.hero-shield{
  width:100%;max-width:420px;margin:0 auto;aspect-ratio:1;
  background:radial-gradient(circle,rgba(212,164,55,.15),transparent 70%);
  display:grid;place-items:center;position:relative;
  animation:float 6s ease-in-out infinite;
}
.hero-shield-inner{
  width:70%;height:70%;border-radius:50%;
  background:linear-gradient(135deg,var(--navy-800),var(--navy-600));
  border:3px solid var(--gold-500);
  display:grid;place-items:center;
  font-size:120px;color:var(--gold-400);
  box-shadow:0 30px 60px rgba(0,0,0,.4),inset 0 0 60px rgba(212,164,55,.1);
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-15px)}}

@media (max-width:900px){
  .hero{padding:50px 20px 70px}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-title{font-size:34px}
  .hero-shield{max-width:280px}
}

/* ========== FEATURE CARDS ========== */
.section{padding:60px 20px}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:34px;font-weight:800;margin-bottom:8px}
.section-title p{color:var(--text-soft)}
.section-eyebrow{
  color:var(--gold-500);font-weight:700;font-size:13px;
  letter-spacing:2px;text-transform:uppercase;margin-bottom:8px;
}

.feature-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:20px;max-width:1200px;margin:0 auto;
}
.feature-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:28px;
  transition:all var(--transition);position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gold-400),var(--gold-500));
  transform:scaleX(0);transform-origin:left;transition:transform .4s;
}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.feature-icon{
  width:54px;height:54px;border-radius:14px;
  background:linear-gradient(135deg,var(--navy-700),var(--navy-500));
  display:grid;place-items:center;color:var(--gold-300);
  font-size:22px;margin-bottom:18px;
}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.feature-card p{color:var(--text-soft);font-size:14px}

/* ========== PRICING ========== */
.pricing-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:24px;max-width:1100px;margin:0 auto;
}
.price-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:32px 26px;
  position:relative;transition:all var(--transition);
}
.price-card.featured{
  background:linear-gradient(135deg,var(--navy-800),var(--navy-700));
  color:#fff;border:2px solid var(--gold-500);
  transform:scale(1.04);
}
.price-card.featured .price-amount,
.price-card.featured .price-features li,
.price-card.featured .price-plan{color:#fff}
.price-card .price-plan{
  font-size:13px;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--gold-500);margin-bottom:6px;
}
.price-card h3{font-size:24px;font-weight:800;margin-bottom:12px}
.price-amount{font-size:42px;font-weight:900;color:var(--text)}
.price-amount small{font-size:16px;font-weight:500;color:var(--text-soft)}
.price-features{list-style:none;margin:24px 0;display:flex;flex-direction:column;gap:10px}
.price-features li{display:flex;align-items:flex-start;gap:8px;font-size:14px}
.price-features li::before{
  content:"✓";color:var(--gold-500);font-weight:900;flex-shrink:0;
}
.featured-badge{
  position:absolute;top:-13px;right:24px;
  padding:5px 14px;background:var(--gold-500);color:var(--navy-900);
  border-radius:99px;font-size:11px;font-weight:800;letter-spacing:1px;
}

/* ========== PLANNER (DAY GRID) ========== */
.day-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));
  gap:10px;margin-bottom:24px;
}
.day-tile{
  aspect-ratio:1;background:var(--surface);
  border:1.5px solid var(--border);border-radius:14px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--transition);position:relative;
}
.day-tile:hover{border-color:var(--gold-500);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.day-tile.completed{
  background:linear-gradient(135deg,var(--navy-700),var(--navy-500));
  border-color:var(--gold-500);color:#fff;
}
.day-tile.completed::after{
  content:"✓";position:absolute;top:6px;right:6px;
  width:22px;height:22px;border-radius:50%;
  background:var(--gold-500);color:var(--navy-900);
  display:grid;place-items:center;font-size:13px;font-weight:900;
}
.day-tile.active{
  border-color:var(--gold-500);
  box-shadow:0 0 0 3px rgba(212,164,55,.2);
}
.day-num{font-size:13px;color:var(--text-soft);font-weight:600}
.day-tile.completed .day-num{color:var(--gold-300)}
.day-big{font-size:28px;font-weight:900;line-height:1}

.day-detail{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:28px;
}
.day-detail-header{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;margin-bottom:20px;
  padding-bottom:18px;border-bottom:1px solid var(--border);
}
.day-detail-title h3{font-size:22px;font-weight:800}
.day-detail-title small{color:var(--text-soft);font-size:13px}

.checklist{list-style:none;display:flex;flex-direction:column;gap:10px}
.checklist li{
  display:flex;align-items:center;gap:12px;padding:12px 14px;
  background:var(--bg);border-radius:12px;border:1px solid var(--border);
  transition:all var(--transition);cursor:pointer;
}
.checklist li:hover{border-color:var(--gold-500)}
.checklist li.done{opacity:.6;text-decoration:line-through}
.check-box{
  width:22px;height:22px;border-radius:6px;
  border:2px solid var(--border);flex-shrink:0;
  display:grid;place-items:center;font-size:12px;color:transparent;
  transition:all var(--transition);
}
.checklist li.done .check-box{
  background:var(--success);border-color:var(--success);color:#fff;
}

/* ========== SUBJECT CARDS ========== */
.subject-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:18px;
}
.subject-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px;
  transition:all var(--transition);cursor:pointer;
  border-left:4px solid var(--gold-500);
}
.subject-card:hover{transform:translateX(4px);box-shadow:var(--shadow-md)}
.subject-icon{
  width:48px;height:48px;border-radius:12px;
  background:linear-gradient(135deg,var(--navy-700),var(--navy-500));
  color:var(--gold-300);font-size:20px;
  display:grid;place-items:center;margin-bottom:14px;
}
.subject-card h4{font-size:16px;font-weight:700;margin-bottom:4px}
.subject-card p{font-size:13px;color:var(--text-soft);margin-bottom:12px}
.subject-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--text-soft)}

/* ========== EXAM ========== */
.exam-shell{max-width:850px;margin:0 auto}
.exam-header{
  background:linear-gradient(135deg,var(--navy-800),var(--navy-700));
  color:#fff;padding:20px 24px;border-radius:var(--radius);
  margin-bottom:18px;display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:12px;
}
.exam-timer{
  font-size:22px;font-weight:800;color:var(--gold-300);
  font-feature-settings:"tnum";
}
.exam-question{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;margin-bottom:18px;
}
.q-num{
  display:inline-block;padding:4px 12px;border-radius:99px;
  background:var(--bg);color:var(--text-soft);font-size:12px;
  font-weight:700;margin-bottom:14px;
}
.q-text{font-size:17px;font-weight:600;line-height:1.6;margin-bottom:20px}
.q-options{display:flex;flex-direction:column;gap:10px}
.q-option{
  padding:14px 18px;background:var(--bg);
  border:2px solid var(--border);border-radius:12px;
  cursor:pointer;transition:all var(--transition);
  display:flex;align-items:center;gap:12px;font-size:15px;
}
.q-option:hover{border-color:var(--gold-500)}
.q-option.selected{
  background:linear-gradient(135deg,rgba(212,164,55,.15),rgba(212,164,55,.05));
  border-color:var(--gold-500);
}
.q-option.correct{
  background:rgba(22,163,74,.1);border-color:var(--success);
}
.q-option.wrong{
  background:rgba(220,38,38,.1);border-color:var(--danger);
}
.q-letter{
  width:28px;height:28px;border-radius:8px;
  background:var(--surface);border:1.5px solid var(--border);
  display:grid;place-items:center;font-weight:800;font-size:13px;flex-shrink:0;
}
.q-option.selected .q-letter{background:var(--gold-500);color:var(--navy-900);border-color:var(--gold-500)}

.q-explain{
  margin-top:16px;padding:14px 16px;background:var(--bg);
  border-left:4px solid var(--gold-500);border-radius:8px;
  font-size:14px;display:none;
}
.q-explain.show{display:block;animation:slideIn .3s ease}
@keyframes slideIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}

/* ========== FORMS ========== */
.form-group{margin-bottom:16px}
.form-group label{
  display:block;font-size:13px;font-weight:600;
  color:var(--text-soft);margin-bottom:6px;
}
.form-control{
  width:100%;padding:12px 14px;font-size:15px;
  background:var(--surface);color:var(--text);
  border:1.5px solid var(--border);border-radius:12px;
  transition:all var(--transition);font-family:inherit;
}
.form-control:focus{outline:none;border-color:var(--gold-500);box-shadow:0 0 0 3px rgba(212,164,55,.15)}

/* ========== AUTH ========== */
.auth-shell{
  min-height:calc(100vh - 80px);
  display:grid;place-items:center;padding:40px 20px;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));
  position:relative;overflow:hidden;
}
.auth-shell::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 30% 20%,rgba(212,164,55,.1),transparent 50%);
}
.auth-card{
  position:relative;background:var(--surface);
  border-radius:var(--radius-lg);padding:40px 32px;
  width:100%;max-width:430px;
  box-shadow:var(--shadow-lg);
  border-top:4px solid var(--gold-500);
}
.auth-card h2{font-size:26px;font-weight:800;text-align:center;margin-bottom:6px}
.auth-card .auth-sub{text-align:center;color:var(--text-soft);margin-bottom:24px}
.auth-card .brand-badge{margin:0 auto 12px}

/* ========== TABS ========== */
.tabs{display:flex;gap:6px;background:var(--bg);padding:6px;border-radius:14px;margin-bottom:20px;flex-wrap:wrap}
.tab{
  flex:1;min-width:90px;padding:9px 14px;font-size:14px;font-weight:600;
  border-radius:10px;color:var(--text-soft);transition:all var(--transition);
  text-align:center;cursor:pointer;
}
.tab.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}

/* ========== TABLE ========== */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
.table{width:100%;border-collapse:collapse;background:var(--surface)}
.table th,.table td{padding:12px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--border)}
.table th{background:var(--bg);font-weight:700;font-size:13px;color:var(--text-soft)}
.table tr:last-child td{border-bottom:none}
.table tr:hover{background:var(--bg)}

/* ========== BADGES ========== */
.badge{display:inline-block;padding:4px 10px;border-radius:99px;font-size:11px;font-weight:700;letter-spacing:.5px}
.badge-gold{background:rgba(212,164,55,.15);color:var(--gold-500)}
.badge-success{background:rgba(22,163,74,.15);color:var(--success)}
.badge-danger{background:rgba(220,38,38,.15);color:var(--danger)}
.badge-info{background:rgba(30,58,111,.15);color:var(--navy-700)}
[data-theme="dark"] .badge-info{color:var(--gold-300)}

/* ========== RANK ========== */
.rank-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:24px}
.rank-tile{
  text-align:center;padding:18px 12px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);
  transition:all var(--transition);
}
.rank-tile.current{border-color:var(--gold-500);background:linear-gradient(135deg,rgba(212,164,55,.1),rgba(212,164,55,.02))}
.rank-icon{font-size:34px;margin-bottom:8px}
.rank-name{font-weight:800;font-size:15px}
.rank-pts{font-size:12px;color:var(--text-soft)}

/* ========== FOOTER ========== */
.footer{
  background:var(--navy-900);color:#9BAACB;
  padding:40px 20px 20px;margin-top:60px;
  border-top:3px solid var(--gold-500);
}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px}
.footer h4{color:#fff;margin-bottom:12px;font-size:15px}
.footer a{display:block;font-size:13px;color:#9BAACB;margin-bottom:6px;transition:color .2s}
.footer a:hover{color:var(--gold-300)}
.footer-bottom{
  max-width:1200px;margin:30px auto 0;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px;
}

/* ========== UTILITIES ========== */
.text-gold{color:var(--gold-500)}
.text-soft{color:var(--text-soft)}
.text-center{text-align:center}
.flex{display:flex}.between{justify-content:space-between}.center{justify-content:center;align-items:center}
.gap-1{gap:8px}.gap-2{gap:16px}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.hidden{display:none !important}

/* ========== ANIMATIONS ========== */
.fade-up{animation:fadeUp .6s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.fade-up:nth-child(1){animation-delay:.05s}
.fade-up:nth-child(2){animation-delay:.1s}
.fade-up:nth-child(3){animation-delay:.15s}
.fade-up:nth-child(4){animation-delay:.2s}
.fade-up:nth-child(5){animation-delay:.25s}
.fade-up:nth-child(6){animation-delay:.3s}

/* ========== MODAL ========== */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(10,22,40,.6);
  display:none;align-items:center;justify-content:center;padding:20px;z-index:100;
  backdrop-filter:blur(4px);
}
.modal-backdrop.show{display:flex;animation:fadeIn .25s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  background:var(--surface);border-radius:var(--radius-lg);
  padding:28px;max-width:520px;width:100%;
  max-height:85vh;overflow-y:auto;
  box-shadow:var(--shadow-lg);
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--navy-500);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:var(--navy-700)}

/* ========== HEATMAP ========== */
.heatmap{display:grid;grid-template-columns:repeat(15,1fr);gap:4px}
.heat-cell{aspect-ratio:1;border-radius:4px;background:var(--bg);transition:all .2s}
.heat-cell.lv1{background:rgba(212,164,55,.25)}
.heat-cell.lv2{background:rgba(212,164,55,.5)}
.heat-cell.lv3{background:rgba(212,164,55,.75)}
.heat-cell.lv4{background:var(--gold-500)}
.heat-cell:hover{transform:scale(1.3)}

/* ============ ADDITIONAL STYLES FOR PAYMENT/MOCK/ANALYTICS/ADMIN ============ */

/* Payment page */
.pricing-card.selected {
  border: 2px solid var(--gold-500) !important;
  box-shadow: 0 0 0 4px rgba(212,164,55,.15);
}
.pricing-features li.muted { color: var(--text-muted); opacity: .6; }
.pricing-features li.muted i { color: #94a3b8 !important; }

.payment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
@media (max-width: 768px) { .payment-grid { grid-template-columns: 1fr; } }

.qr-box {
  background: #fff;
  border-radius: 14px;
  padding: 24px;
  text-align: center;
  border: 2px dashed var(--gold-500);
}
.qr-placeholder {
  background: #f1f5f9;
  border-radius: 12px;
  padding: 60px 20px;
  color: #475569;
}
.qr-placeholder i { font-size: 5rem; color: #1e293b; }
.qr-placeholder div { margin-top: 12px; font-weight: 700; color: #0F1F3D; }
.qr-amount {
  margin-top: 16px;
  padding: 12px;
  background: var(--navy-800);
  border-radius: 10px;
  color: var(--gold-500);
  font-size: 1.3rem;
  font-weight: 700;
}
.bank-info {
  margin-top: 16px;
  padding: 16px;
  background: var(--card-bg);
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: .95rem;
  line-height: 1.8;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}
.review-stars { color: var(--gold-500); font-size: 1.2rem; margin-bottom: 10px; }
.review-text { font-style: italic; line-height: 1.7; margin-bottom: 12px; }
.review-author { font-size: .9rem; color: var(--text-muted); font-weight: 600; }

.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.faq-q {
  padding: 16px 18px;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background .2s;
}
.faq-q:hover { background: rgba(212,164,55,.05); }
.faq-q.open i { transform: rotate(180deg); }
.faq-q i { transition: transform .3s; color: var(--gold-500); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s;
  padding: 0 18px;
  color: var(--text-muted);
  line-height: 1.7;
}
.faq-q.open + .faq-a { padding: 0 18px 16px; }

/* Mock Exam */
.exam-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.detail-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--card-bg-2);
  border-radius: 10px;
  border: 1px solid var(--border);
}
.detail-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.detail-label { font-size: .85rem; color: var(--text-muted); }
.detail-val { font-weight: 700; }

.info-box {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  padding: 16px;
  background: var(--card-bg-2);
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: .95rem;
}
.info-box i { color: var(--gold-500); }

.exam-progress-bar {
  height: 6px;
  background: var(--card-bg-2);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 20px;
}
.exam-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #D4A437, #E8B94A);
  transition: width .3s;
}

.qmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
  gap: 6px;
}
.qmap-cell {
  aspect-ratio: 1;
  background: var(--card-bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.qmap-cell:hover { transform: scale(1.1); }
.qmap-cell.answered { background: rgba(22,163,74,.2); border-color: #16A34A; color: #16A34A; }
.qmap-cell.current { background: var(--gold-500); border-color: var(--gold-500); color: var(--navy-900); }

.section-row {
  display: grid;
  grid-template-columns: 160px 1fr 120px;
  gap: 12px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.section-row:last-child { border-bottom: none; }
.section-name { font-weight: 600; }
.section-bar {
  height: 12px;
  background: var(--card-bg-2);
  border-radius: 6px;
  overflow: hidden;
}
.section-fill {
  height: 100%;
  border-radius: 6px;
  transition: width .5s;
}
.section-pct { text-align: right; font-size: .9rem; color: var(--text-muted); }

@media (max-width: 600px) {
  .section-row { grid-template-columns: 1fr; gap: 4px; }
  .section-pct { text-align: left; }
}

.exam-section {
  font-size: .85rem;
  color: var(--gold-500);
  background: rgba(212,164,55,.1);
  padding: 4px 10px;
  border-radius: 12px;
  display: inline-block;
  margin-top: 4px;
}

/* Analytics */
.heatmap-mini {
  display: grid;
  grid-template-columns: repeat(15, 1fr);
  gap: 4px;
}
.heat-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  background: rgba(148,163,184,.15);
}
.heat-cell.heat-1 { background: rgba(212,164,55,.3); }
.heat-cell.heat-2 { background: rgba(212,164,55,.5); }
.heat-cell.heat-3 { background: rgba(212,164,55,.75); }
.heat-cell.heat-4 { background: var(--gold-500); }

.subject-dot {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

.weak-row {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px;
  background: var(--card-bg-2);
  border-radius: 10px;
  border-left: 3px solid #DC2626;
  margin-bottom: 10px;
}
.weak-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(220,38,38,.15);
  color: #DC2626;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.weak-name { font-weight: 700; }
.weak-detail { font-size: .9rem; color: var(--text-muted); margin-top: 2px; }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}
.empty-state i { font-size: 3rem; color: var(--gold-500); margin-bottom: 12px; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

/* Admin */
.admin-tabs { background: transparent; padding: 0; border: none; gap: 8px; }
.admin-tabs .tab {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 18px;
  cursor: pointer;
  font-weight: 600;
  transition: all .2s;
}
.admin-tabs .tab.active {
  background: var(--gold-500);
  color: var(--navy-900);
  border-color: var(--gold-500);
}

.code-tag {
  font-family: monospace;
  background: rgba(212,164,55,.1);
  color: var(--gold-500);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: .85rem;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: .8rem;
  font-weight: 600;
}

.payment-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 16px;
  align-items: center;
  padding: 14px;
  background: var(--card-bg-2);
  border-radius: 10px;
  border-left: 3px solid var(--gold-500);
  margin-bottom: 10px;
}
.payment-meta { font-size: .9rem; color: var(--text-muted); margin-top: 4px; }
.payment-slip {
  background: var(--card-bg);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .9rem;
  border: 1px solid var(--border);
}
.payment-actions { display: flex; gap: 8px; }

@media (max-width: 768px) {
  .payment-row { grid-template-columns: 1fr; }
}

.sales-summary { display: flex; flex-direction: column; gap: 4px; }
.ss-row {
  display: flex;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--card-bg-2);
  border-radius: 8px;
}
.ss-row.total {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--navy-900);
  margin-top: 8px;
  font-size: 1.05rem;
}

/* Result screen */
.result-score {
  font-size: 4rem;
  font-weight: 800;
  margin: 20px 0;
}
.result-detail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px;
  max-width: 600px;
  margin: 0 auto;
}
.result-stat {
  background: var(--card-bg-2);
  padding: 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.rs-val { font-size: 1.8rem; font-weight: 700; color: var(--gold-500); }
.rs-lbl { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }

.text-center { text-align: center; }