:root {
  --accent:        #6366f1;
  --accent-2:      #818cf8;
  --accent-glow:   rgba(99,102,241,.14);
  --accent-border: rgba(99,102,241,.3);
  --success:       #10b981;
  --success-dim:   rgba(16,185,129,.12);
  --danger:        #ef4444;
  --gold:          #f59e0b;
  --radius:    14px;
  --radius-sm: 9px;
  --radius-xs: 6px;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-head: 'Space Grotesk', sans-serif;

  /* Legacy aliases */
  --emerald: var(--success);
  --emerald-dim: var(--success-dim);
  --emerald-border: rgba(16,185,129,.3);
  --sky: var(--accent);
  --sky-light: var(--accent-2);
  --sky-glow: var(--accent-glow);
  --coral: #ef4444;
  --orange: var(--accent);
  --orange2: var(--accent-2);
  --orange-glow: var(--accent-glow);
  --orange-border: var(--accent-border);
}

[data-theme="dark"] {
  --bg:        #0c0c0f;
  --bg2:       #111116;
  --bg3:       #17171e;
  --bg4:       #1e1e28;
  --bg5:       #26263a;
  --border:    rgba(255,255,255,.07);
  --border2:   rgba(255,255,255,.13);
  --text:      #e8e8f0;
  --text2:     #a8a8c0;
  --text3:     #6a6a88;
  --text4:     #35354e;
  --shadow:    0 8px 40px rgba(0,0,0,.6);
  --nav-bg:    rgba(12,12,15,.93);
  --card-bg:   #111116;
  --input-bg:  #17171e;
  --black: #0c0c0f;
  --black2: #111116;
  --black3: #17171e;
  --black4: #1e1e28;
  --black5: #26263a;
  --white: #e8e8f0;
  --gray: #6a6a88;
  --gray2: #4a4a6a;
  /* legacy text vars */
  --text-primary: #e8e8f0;
  --text-secondary: #a8a8c0;
  --text-muted: #6a6a88;
  --bg-card: #111116;
  --bg-dark: #0c0c0f;
}

[data-theme="light"] {
  --bg:        #f4f4f9;
  --bg2:       #ffffff;
  --bg3:       #ededf5;
  --bg4:       #e5e5f0;
  --bg5:       #dbdbed;
  --border:    rgba(0,0,0,.07);
  --border2:   rgba(0,0,0,.13);
  --text:      #18181f;
  --text2:     #484868;
  --text3:     #8888aa;
  --text4:     #c0c0d8;
  --shadow:    0 8px 40px rgba(0,0,0,.1);
  --nav-bg:    rgba(244,244,249,.94);
  --card-bg:   #ffffff;
  --input-bg:  #ededf5;
  --black: #f4f4f9;
  --black2: #ffffff;
  --black3: #ededf5;
  --black4: #e5e5f0;
  --black5: #dbdbed;
  --white: #18181f;
  --gray: #8888aa;
  --gray2: #6868a0;
  --text-primary: #18181f;
  --text-secondary: #484868;
  --text-muted: #8888aa;
  --bg-card: #ffffff;
  --bg-dark: #f4f4f9;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex; flex-direction: column;
  overflow-x: hidden;
  font-size: 15px;
  line-height: 1.65;
  transition: background .25s, color .2s;
}

/* NAV */
nav {
  position: sticky; top: 0; z-index: 200;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 62px; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  transition: background .25s, border-color .25s;
}
.nav-brand {
  font-family: var(--font-head);
  font-weight: 700; font-size: 1.25rem;
  color: var(--text); text-decoration: none;
  display: flex; align-items: center; gap: .6rem;
  letter-spacing: -.02em; flex-shrink: 0;
}
.logo-box {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: .85rem;
  box-shadow: 0 4px 14px rgba(99,102,241,.4);
}
.nav-brand em { color: var(--accent); font-style: normal; }
.nav-right { display: flex; align-items: center; gap: .15rem; }
.nav-links { display: flex; align-items: center; gap: .1rem; }
.nav-links a {
  color: var(--text3); text-decoration: none;
  padding: .38rem .85rem; border-radius: var(--radius-xs);
  font-size: .84rem; font-weight: 500; transition: all .15s;
  display: flex; align-items: center; gap: .4rem;
}
.nav-links a:hover { color: var(--text); background: var(--bg4); }
.nav-links a.active { color: var(--text); background: var(--bg4); }
.btn-nav {
  background: var(--accent) !important;
  color: #fff !important;
  padding: .38rem 1.1rem !important;
  border-radius: var(--radius-xs) !important;
  font-weight: 600 !important;
  font-size: .84rem !important;
  margin-left: .4rem;
  box-shadow: 0 2px 12px rgba(99,102,241,.3);
}
.btn-nav:hover { background: var(--accent-2) !important; transform: translateY(-1px); box-shadow: 0 4px 18px rgba(99,102,241,.45) !important; }
.live-badge {
  display: flex; align-items: center; gap: .35rem;
  font-size: .74rem; color: var(--text3);
  border: 1px solid var(--border2);
  padding: .22rem .65rem; border-radius: 20px;
  margin-right: .4rem;
}
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: #22c55e; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.3;transform:scale(1.4)} }

.theme-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border2);
  border-radius: var(--radius-xs);
  background: var(--bg4);
  color: var(--text3);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: .9rem;
  transition: all .2s; margin-left: .35rem;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

/* LAYOUT */
main { flex: 1; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; width: 100%; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .6rem 1.35rem; border-radius: var(--radius-sm);
  font-family: var(--font-body); font-weight: 600; font-size: .875rem;
  cursor: pointer; transition: all .15s;
  border: none; text-decoration: none; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 2px 12px rgba(99,102,241,.3); }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,.4); }
.btn-secondary { background: var(--bg4); color: var(--text); border: 1px solid var(--border2); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-lg { padding: .75rem 1.9rem; font-size: .95rem; border-radius: var(--radius); }
.btn-sm { padding: .35rem .85rem; font-size: .8rem; border-radius: var(--radius-xs); }
.w-full { width: 100%; justify-content: center; }

/* CARDS */
.card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
  transition: border-color .2s, box-shadow .2s;
}

/* FORMS */
.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block; font-size: .72rem; font-weight: 700;
  color: var(--text3); margin-bottom: .4rem;
  text-transform: uppercase; letter-spacing: .08em;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; background: var(--input-bg);
  border: 1px solid var(--border2); color: var(--text);
  padding: .65rem 1rem; border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: .9rem;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group select option { background: var(--input-bg); color: var(--text); }
.form-group input::placeholder { color: var(--text4); }

/* MESSAGES */
.messages-container { padding: .8rem 2rem 0; }
.message {
  padding: .7rem 1rem; border-radius: var(--radius-sm);
  margin-bottom: .4rem; font-size: .875rem;
  display: flex; align-items: center; gap: .5rem;
}
.message.error   { background: rgba(239,68,68,.1); border:1px solid rgba(239,68,68,.2); color:#f87171; }
.message.success { background: rgba(16,185,129,.1); border:1px solid rgba(16,185,129,.2); color:#34d399; }
.message.warning { background: rgba(245,158,11,.1); border:1px solid rgba(245,158,11,.2); color:#fbbf24; }
.message.info    { background: var(--bg3); border:1px solid var(--border2); color:var(--text2); }

/* BADGES */
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .2rem .6rem; border-radius: 20px;
  font-size: .72rem; font-weight: 700;
}
.badge-sky   { background: var(--accent-glow); color: var(--accent-2); border:1px solid var(--accent-border); }
.badge-mint  { background: rgba(16,185,129,.1); color: #34d399; border:1px solid rgba(16,185,129,.25); }
.badge-gold  { background: rgba(245,158,11,.1); color: #fbbf24; border:1px solid rgba(245,158,11,.2); }
.badge-coral { background: rgba(239,68,68,.1); color: #f87171; border:1px solid rgba(239,68,68,.2); }
.badge-accent{ background: var(--accent-glow); color: var(--accent-2); border:1px solid var(--accent-border); }

/* STAT CARDS */
.stat-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
  position: relative; overflow: hidden; transition: .2s;
}
.stat-card::after {
  content:''; position:absolute; bottom:0; left:0; right:0;
  height: 3px; background: var(--accent);
  border-radius: 0 0 var(--radius) var(--radius); opacity:.8;
}
.stat-card:hover { border-color: var(--accent-border); transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); }
.stat-icon { font-size: 1.25rem; color: var(--accent); margin-bottom: 1rem; opacity:.9; }
.stat-value { font-size: 2.25rem; font-weight: 800; line-height:1; margin-bottom:.4rem; font-family: var(--font-head); }
.stat-name { font-size: .7rem; color: var(--text3); text-transform:uppercase; letter-spacing:.1em; font-weight:700; }
.stat-card.score::after { background: linear-gradient(90deg, var(--accent), var(--accent-2)); opacity:1; }
.stat-card.tests::after { background: var(--success); }
.stat-card.level::after { background: var(--gold); }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg2); padding: 1.4rem 2rem;
  transition: background .25s;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer-brand { font-family: var(--font-head); font-weight: 700; font-size: .95rem; }
.footer-brand em { color: var(--accent); font-style: normal; }
.footer-dev { font-size: .8rem; color: var(--text3); }
.footer-dev strong { color: var(--text2); }
.footer-links { display: flex; gap: 1.2rem; }
.footer-links a { color: var(--text3); text-decoration:none; font-size:.82rem; transition:color .15s; }
.footer-links a:hover { color: var(--accent); }

/* TRIAL BANNER */
.trial-banner {
  background: linear-gradient(135deg, var(--accent-glow), rgba(99,102,241,.06));
  border-bottom: 1px solid var(--accent-border);
  padding: .65rem 2rem;
  font-size: .84rem;
  display: flex; align-items: center; gap: .75rem;
  color: var(--accent-2);
}
.trial-banner i { flex-shrink: 0; }
.trial-banner a { color: var(--accent); font-weight: 700; }

/* UTILITIES */
.text-accent { color: var(--accent-2); }
.text-mint   { color: #34d399; }
.text-gold   { color: #fbbf24; }
.text-coral  { color: #f87171; }
.text-muted  { color: var(--text3); }
.text-center { text-align: center; }
.text-sky    { color: var(--accent-2); }
.mt-1{margin-top:.5rem;} .mt-2{margin-top:1rem;} .mt-3{margin-top:1.5rem;} .mt-4{margin-top:2rem;}
.mb-1{margin-bottom:.5rem;} .mb-2{margin-bottom:1rem;} .mb-3{margin-bottom:1.5rem;}
.flex { display:flex; } .flex-center { display:flex; align-items:center; justify-content:center; }
.gap-1{gap:.5rem;} .gap-2{gap:1rem;}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg5); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

@media (max-width: 1024px) {
  nav { height: auto; padding: 1rem; flex-wrap: wrap; gap: .75rem; }
  .nav-links { flex-wrap: wrap; justify-content: center; }
  .container { padding: 0 1rem; }
}
@media (max-width: 600px) {
  .nav-links a { font-size: .75rem; padding: .3rem .5rem; }
  .btn-nav { margin-left: 0; }
  .footer-inner { flex-direction: column; text-align: center; }
  .live-badge { display: none; }
  .trial-banner { padding: .65rem 1rem; font-size: .8rem; }
}
/* Touch targets */
@media (hover: none) {
  .btn { min-height: 44px; }
  .nav-links a { min-height: 40px; display:inline-flex; align-items:center; }
}
/* Prevent text size inflation on iOS */
html { -webkit-text-size-adjust: 100%; }
</style>