/* ============================================================
   TECH INTERVIEW SIMULATOR — design tokens & shared components
   Dark cyberpunk / premium SaaS glass system
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  /* deep surfaces */
  --void:       #05060A;   /* base page background (obsidian) */
  --ink:        #04050A;   /* deepest solid panel (brand mark, solid CTAs, deep shell) */
  --ink-2:      rgba(255,255,255,0.045); /* glass surface elevated on dark contexts */
  --paper:      #F5F7FC;   /* light text used on solid --ink panels */
  --paper-dim:  rgba(255,255,255,0.03);  /* subtle section band / neutral glass fill */
  --ink-soft:   #C7CDDC;   /* default body text (light, on dark bg) */
  --ink-mute:   #8890A6;   /* muted / secondary text */
  --line:       rgba(255,255,255,0.10); /* ultra-thin glass border */
  --line-dark:  rgba(255,255,255,0.08); /* border inside solid --ink panels */
  --white:      rgba(255,255,255,0.04); /* standard glass card fill */

  /* brand accents */
  --cyan:       #22D3EE;
  --violet:     #8B5CF6;
  --violet-2:   #C084FC;
  --grad:       linear-gradient(135deg, #22D3EE 0%, #8B5CF6 62%, #C084FC 100%);
  --grad-text:  linear-gradient(90deg, #67E8F9, #C084FC);

  /* success (used sparingly, exactly for success states) */
  --clear:      #2FE6B0;
  --clear-dim:  rgba(47,230,176,0.14);
  --clear-ink:  #06261C;

  /* warning */
  --amber:      #FFB454;
  --amber-dim:  rgba(255,180,84,0.14);

  /* error / weak */
  --red:        #FF6B84;
  --red-dim:    rgba(255,107,132,0.14);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --glass-blur: blur(20px) saturate(150%);
  --shadow-card: inset 0 1px 0 rgba(255,255,255,0.06), 0 20px 45px -28px rgba(0,0,0,0.75);
  --shadow-lift: inset 0 1px 0 rgba(255,255,255,0.07), 0 30px 70px -30px rgba(0,0,0,0.8);
  --glow-primary: 0 0 0 1px rgba(139,92,246,0.35), 0 10px 30px -8px rgba(139,92,246,0.5), 0 0 40px -12px rgba(34,211,238,0.4);
  --glow-primary-hover: 0 0 0 1px rgba(139,92,246,0.5), 0 14px 38px -8px rgba(139,92,246,0.65), 0 0 55px -10px rgba(34,211,238,0.55);
  --glow-violet-soft: 0 0 0 1px rgba(139,92,246,0.28), 0 0 26px -6px rgba(139,92,246,0.35);
  --glow-emerald: 0 0 0 1px rgba(47,230,176,0.3), 0 8px 26px -10px rgba(47,230,176,0.4);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background-color:var(--void);
  background-image:
    radial-gradient(1100px 640px at 88% -8%, rgba(34,211,238,0.11), transparent 60%),
    radial-gradient(950px 620px at 6% 108%, rgba(139,92,246,0.14), transparent 60%),
    radial-gradient(700px 480px at 55% 38%, rgba(192,132,252,0.05), transparent 70%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  color:var(--ink-soft);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img,svg{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
h1,h2,h3,h4{ font-family:var(--font-display); color:#F5F7FC; margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
.mono{ font-family:var(--font-mono); }

:focus-visible{
  outline: 2px solid var(--violet);
  outline-offset: 3px;
  box-shadow:0 0 0 5px rgba(139,92,246,0.22);
  border-radius:4px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

.wrap{ max-width:1180px; margin:0 auto; padding:0 28px; }
.wrap-narrow{ max-width:860px; margin:0 auto; padding:0 28px; }

/* shared glass surface treatment for every card-like element */
.card,.step-card,.role-card,.type-card,.testi,.qa-item,.modality,.compare-card,
.shortcut,.ob-card,.opt,.rail-card,.iv-rubric,.summary-card,
select,.select-field select,textarea,.iv-answer textarea{
  backdrop-filter:var(--glass-blur);
  -webkit-backdrop-filter:var(--glass-blur);
}

/* ---------- eyebrow / labels ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--cyan);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:7px; height:7px;
  border-radius:50%;
  background:var(--grad);
  box-shadow:0 0 0 3px rgba(139,92,246,0.18), 0 0 10px rgba(34,211,238,0.6);
}
.eyebrow.on-dark{ color:#B9E7FF; }
.eyebrow.on-dark::before{ box-shadow:0 0 0 3px rgba(139,92,246,0.2), 0 0 10px rgba(34,211,238,0.6); }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:15px;
  border:1px solid transparent;
  transition:transform .15s ease, box-shadow .2s ease, background .15s ease, color .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow: var(--glow-primary);
}
.btn-primary:hover{ transform:translateY(-1px); box-shadow:var(--glow-primary-hover); }
.btn-ghost{
  background:rgba(255,255,255,0.03);
  color:var(--ink-soft);
  border-color:var(--line);
  backdrop-filter:var(--glass-blur);
}
.btn-ghost:hover{ border-color:rgba(139,92,246,0.5); color:#fff; box-shadow:var(--glow-violet-soft); }
.btn-dark{
  background:rgba(139,92,246,0.10);
  color:#fff;
  border:1px solid rgba(139,92,246,0.4);
  backdrop-filter:var(--glass-blur);
}
.btn-dark:hover{ transform:translateY(-1px); background:rgba(139,92,246,0.18); box-shadow:var(--glow-violet-soft); }
.btn-block{ width:100%; }
.btn-sm{ padding:10px 18px; font-size:13.5px; }
.btn[disabled]{ opacity:.45; pointer-events:none; }

/* ---------- top nav ---------- */
.site-nav{
  position:sticky; top:0; z-index:50;
  background:rgba(5,6,10,0.72);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.site-nav .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{ display:flex; align-items:center; gap:10px; font-weight:700; color:#F5F7FC; }
.brand .mark{
  width:30px; height:30px; border-radius:8px;
  background:var(--grad);
  color:#fff;
  font-family:var(--font-mono);
  font-size:12px;
  display:flex; align-items:center; justify-content:center;
  font-weight:600;
  box-shadow:var(--glow-violet-soft);
}
.brand span{ font-family:var(--font-display); font-size:18px; }
.nav-links{ display:flex; align-items:center; gap:30px; }
.nav-links a{ font-size:14.5px; color:var(--ink-soft); font-weight:500; transition:color .15s; }
.nav-links a:hover{ color:var(--cyan); }
.nav-cta{ display:flex; align-items:center; gap:14px; }
.nav-toggle{ display:none; }

.lang-switch{ display:flex; align-items:center; border:1px solid var(--line); border-radius:999px; padding:3px; gap:2px; background:rgba(255,255,255,0.02); }
.lang-switch button{ border:none; background:transparent; padding:6px 12px; border-radius:999px; font-family:var(--font-mono); font-size:12px; font-weight:600; color:var(--ink-mute); transition:all .15s; }
.lang-switch button.active{ background:var(--grad); color:#fff; box-shadow:var(--glow-violet-soft); }
.app-top .lang-switch{ border-color:var(--line-dark); }
.app-top .lang-switch button{ color:#8B90A0; }
.app-top .lang-switch button.active{ background:var(--grad); color:#fff; }
.iv-top .lang-switch{ border-color:var(--line-dark); }
.iv-top .lang-switch button{ color:#8B90A0; }
.iv-top .lang-switch button.active{ background:var(--grad); color:#fff; }
@media (max-width: 620px){ .lang-switch button{ padding:6px 9px; } }

@media (max-width: 880px){
  .nav-links{ display:none; }
  .nav-cta .btn-ghost{ display:none; }
}

/* ---------- app shell (logged-in pages) ---------- */
.app-shell{ min-height:100vh; display:flex; flex-direction:column; }
.app-top{
  background:rgba(5,6,10,0.75);
  backdrop-filter:blur(16px) saturate(150%);
  color:var(--paper);
  border-bottom:1px solid var(--line);
}
.app-top .wrap{ display:flex; align-items:center; justify-content:space-between; height:72px; }
.app-top .brand span{ color:var(--paper); }
.app-top .brand .mark{ background:var(--grad); color:#fff; }
.app-nav{ display:flex; gap:26px; }
.app-nav a{ font-size:14px; color:#8890A6; font-weight:500; padding:6px 0; border-bottom:2px solid transparent; transition:color .15s, border-color .15s; }
.app-nav a.active, .app-nav a:hover{ color:#fff; border-color:var(--cyan); }
.app-user{ display:flex; align-items:center; gap:12px; font-size:13.5px; color:#8890A6; }
.avatar{
  width:34px; height:34px; border-radius:50%;
  background:var(--grad);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-weight:600; color:#fff; font-size:13px;
  box-shadow:var(--glow-violet-soft);
}
@media (max-width: 880px){ .app-nav{ display:none; } }

.app-main{ flex:1; padding:44px 0 80px; }

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 0;
}
.hero::after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(650px 320px at 85% 0%, rgba(139,92,246,0.30), transparent 60%),
    radial-gradient(550px 280px at 10% 100%, rgba(34,211,238,0.22), transparent 60%);
  pointer-events:none;
}
.hero .wrap{ position:relative; z-index:1; }
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap:60px;
  align-items:center;
  padding-bottom:40px;
}
.hero h1{
  font-size:clamp(34px, 4.4vw, 58px);
  line-height:1.05;
  color:#F5F7FC;
  font-weight:600;
}
.hero h1 em{
  font-style:normal;
  background:var(--grad-text);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:22px;
  font-size:18px;
  line-height:1.6;
  color:var(--ink-mute);
  max-width:52ch;
}
.hero-actions{ display:flex; gap:14px; margin-top:32px; flex-wrap:wrap; }
.hero-meta{
  margin-top:34px;
  display:flex; gap:28px; flex-wrap:wrap;
}
.hero-meta div{ font-family:var(--font-mono); font-size:12px; color:var(--ink-mute); letter-spacing:.04em; }
.hero-meta strong{ display:block; font-family:var(--font-display); font-size:22px; color:#fff; font-weight:600; letter-spacing:0; }

/* clearance rail (signature component) */
.rail-card{
  background:linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border:1px solid var(--line-dark);
  border-radius:var(--radius-lg);
  padding:26px 24px 22px;
  box-shadow:var(--shadow-lift);
}
.rail-card .rail-title{
  font-family:var(--font-mono);
  font-size:11.5px;
  color:var(--ink-mute);
  text-transform:uppercase;
  letter-spacing:.12em;
  margin-bottom:18px;
  display:flex; justify-content:space-between;
}
.rail{
  display:flex; flex-direction:column;
}
.rail-step{
  display:flex; align-items:flex-start; gap:14px;
  padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,0.09);
  position:relative;
}
.rail-step:last-child{ border-bottom:none; }
.rail-dot{
  width:22px; height:22px; border-radius:50%;
  border:2px solid #383E4C;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:10.5px; color:var(--ink-mute);
  flex:none; margin-top:1px;
}
.rail-step.done .rail-dot{ background:var(--clear); border-color:var(--clear); color:#06261C; box-shadow:var(--glow-emerald); }
.rail-step.active .rail-dot{ border-color:var(--violet); color:var(--violet-2); box-shadow:0 0 0 4px rgba(139,92,246,0.18), 0 0 14px rgba(34,211,238,0.3); }
.rail-step .rail-label{ font-size:14px; color:#DADDE4; font-weight:500; }
.rail-step .rail-desc{ font-size:12.5px; color:var(--ink-mute); margin-top:2px; }
.rail-step.active .rail-label{ color:#fff; }

/* horizontal rail variant for in-app headers */
.rail-h{ display:flex; align-items:center; }
.rail-h .rh-step{ display:flex; flex-direction:column; align-items:center; gap:6px; flex:1; position:relative; }
.rail-h .rh-line{ position:absolute; top:11px; left:50%; width:100%; height:2px; background:var(--line); z-index:0; }
.rail-h .rh-step:last-child .rh-line{ display:none; }
.rail-h .rh-step.done .rh-line{ background:var(--clear); }
.rail-h .rh-dot{
  width:24px; height:24px; border-radius:50%; background:var(--ink);
  border:2px solid var(--line); z-index:1;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:10.5px; color:var(--ink-mute);
}
.rail-h .rh-step.done .rh-dot{ background:var(--clear); border-color:var(--clear); color:#06261C; box-shadow:var(--glow-emerald); }
.rail-h .rh-step.active .rh-dot{ border-color:var(--violet); color:var(--violet-2); background:rgba(139,92,246,0.14); box-shadow:0 0 0 4px rgba(139,92,246,0.15); }
.rail-h .rh-label{ font-size:12px; color:var(--ink-mute); text-align:center; font-weight:500; }
.rail-h .rh-step.active .rh-label, .rail-h .rh-step.done .rh-label{ color:#fff; }

/* logo strip */
.strip{ padding:26px 0; border-bottom:1px solid var(--line); }
.strip .wrap{ display:flex; align-items:center; gap:34px; flex-wrap:wrap; justify-content:space-between; }
.strip span{ font-family:var(--font-mono); font-size:12px; color:var(--ink-mute); letter-spacing:.06em; }
.strip .items{ display:flex; gap:26px; flex-wrap:wrap; }
.strip .items b{ font-family:var(--font-display); font-weight:600; color:#F5F7FC; font-size:15px; }

/* ---------- sections ---------- */
section{ padding:96px 0; }
section.tight{ padding:64px 0; }
.section-head{ max-width:640px; margin-bottom:52px; }
.section-head h2{ font-size:clamp(28px,3vw,40px); font-weight:600; }
.section-head p{ margin-top:16px; font-size:17px; color:var(--ink-mute); line-height:1.6; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

.on-dark{ background:linear-gradient(180deg, rgba(139,92,246,0.07), rgba(34,211,238,0.03)); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.on-dark .section-head p{ color:var(--ink-mute); }
.on-dim{ background:rgba(255,255,255,0.015); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

/* ---------- how it works ---------- */
.steps-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.step-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:30px 26px; box-shadow:var(--shadow-card);
}
.step-card .num{ font-family:var(--font-mono); font-size:12px; color:var(--cyan); margin-bottom:16px; }
.step-card h3{ font-size:20px; margin-bottom:10px; }
.step-card p{ font-size:14.5px; color:var(--ink-mute); }

/* ---------- process timeline ---------- */
.timeline{ position:relative; padding-left:2px; }
.tl-item{
  display:grid; grid-template-columns:120px 1px 1fr; gap:0;
  min-height:130px;
}
.tl-item .tl-when{ padding-top:6px; font-family:var(--font-mono); font-size:12.5px; color:var(--ink-mute); }
.tl-item .tl-line{ position:relative; background:var(--line); }
.tl-item .tl-dot{
  position:absolute; top:4px; left:50%; transform:translateX(-50%);
  width:12px; height:12px; border-radius:50%; background:var(--grad);
  box-shadow:0 0 0 5px var(--void), 0 0 0 6px var(--line), 0 0 12px rgba(139,92,246,0.5);
}
.tl-item:last-child .tl-line{ background:transparent; }
.tl-body{ padding:0 0 46px 34px; }
.tl-body h3{ font-size:21px; margin-bottom:6px; }
.tl-body .tl-tag{ font-family:var(--font-mono); font-size:11.5px; color:var(--cyan); text-transform:uppercase; letter-spacing:.08em; margin-bottom:8px; display:block; }
.tl-cols{ display:grid; grid-template-columns:1fr 1fr; gap:22px; margin-top:16px; }
.tl-cols h4{ font-size:12.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-mute); font-family:var(--font-mono); margin-bottom:8px; font-weight:600; }
.tl-cols ul li{ font-size:14px; color:var(--ink-soft); padding:5px 0 5px 16px; position:relative; }
.tl-cols ul li::before{ content:"—"; position:absolute; left:0; color:var(--ink-mute); }

@media (max-width: 760px){
  .tl-item{ grid-template-columns:0 1px 1fr; }
  .tl-item .tl-when{ display:none; }
  .tl-cols{ grid-template-columns:1fr; }
}

/* ---------- roles / stacks grid ---------- */
.role-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.role-card{
  border:1px solid var(--line); border-radius:var(--radius-md); padding:20px;
  background:var(--white); transition:border-color .15s, transform .15s, box-shadow .15s;
  cursor:pointer; box-shadow:var(--shadow-card);
}
.role-card:hover{ border-color:rgba(139,92,246,0.45); transform:translateY(-2px); box-shadow:var(--shadow-card), var(--glow-violet-soft); }
.role-card.selected{ border-color:var(--violet); background:rgba(139,92,246,0.10); box-shadow:var(--glow-violet-soft); }
.role-card h4{ font-size:15.5px; margin-bottom:4px; color:#F5F7FC; }
.role-card p{ font-size:12.5px; color:var(--ink-mute); }
@media (max-width: 880px){ .role-grid{ grid-template-columns:repeat(2,1fr); } }

/* ---------- benefits ---------- */
.benefit-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.benefit{ }
.benefit .ic{
  width:44px; height:44px; border-radius:10px; background:rgba(139,92,246,0.14); color:var(--violet-2);
  display:flex; align-items:center; justify-content:center; margin-bottom:16px; font-size:19px;
  border:1px solid rgba(139,92,246,0.25);
}
.benefit h3{ font-size:16.5px; margin-bottom:8px; }
.benefit p{ font-size:14px; color:var(--ink-mute); }
@media (max-width: 900px){ .benefit-grid{ grid-template-columns:repeat(2,1fr); } }

/* ---------- interview type cards ---------- */
.type-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.type-card{
  border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px;
  background:var(--white); display:flex; flex-direction:column; gap:14px;
  box-shadow:var(--shadow-card); transition:border-color .15s, box-shadow .15s;
}
.type-card:hover{ border-color:rgba(34,211,238,0.35); box-shadow:var(--shadow-card), 0 0 26px -12px rgba(34,211,238,0.4); }
.type-card .tag{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--cyan); }
.type-card h3{ font-size:19px; }
.type-card p{ font-size:14px; color:var(--ink-mute); }
.type-card ul{ margin-top:auto; padding-top:10px; border-top:1px solid var(--line); }
.type-card ul li{ font-size:12.5px; color:var(--ink-soft); padding:3px 0; }
.type-card ul li b{ color:#F5F7FC; font-weight:600; }
@media (max-width: 900px){ .type-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width: 600px){ .type-grid{ grid-template-columns:1fr; } }

/* ---------- evolution / competency bars ---------- */
.comp-row{ display:grid; grid-template-columns:170px 1fr 46px; align-items:center; gap:16px; padding:11px 0; }
.comp-row .comp-name{ font-size:13.5px; font-weight:500; color:#F5F7FC; }
.comp-track{ height:8px; border-radius:99px; background:rgba(255,255,255,0.06); overflow:hidden; }
.comp-fill{ height:100%; border-radius:99px; background:var(--grad); box-shadow:0 0 10px rgba(139,92,246,0.5); }
.comp-score{ font-family:var(--font-mono); font-size:13px; color:var(--ink-mute); text-align:right; }

/* ---------- testimonials ---------- */
.testi-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.testi{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px; box-shadow:var(--shadow-card); }
.testi p.quote{ font-size:15px; color:var(--ink-soft); line-height:1.6; }
.testi .who{ display:flex; align-items:center; gap:12px; margin-top:20px; }
.testi .who .ph{ width:38px; height:38px; border-radius:50%; background:rgba(139,92,246,0.14); border:1px solid rgba(139,92,246,0.25); display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-weight:600; color:var(--violet-2); font-size:13px; }
.testi .who .meta b{ display:block; font-size:13.5px; color:#F5F7FC; }
.testi .who .meta span{ font-size:12px; color:var(--ink-mute); }
@media (max-width: 900px){ .testi-grid{ grid-template-columns:1fr; } }

/* ---------- FAQ ---------- */
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{ display:flex; align-items:center; justify-content:space-between; padding:22px 0; font-size:16px; font-weight:600; color:#F5F7FC; background:none; border:none; width:100%; text-align:left; }
.faq-q .plus{ font-family:var(--font-mono); color:var(--ink-mute); transition:transform .2s, color .2s; }
.faq-item.open .faq-q .plus{ transform:rotate(45deg); color:var(--cyan); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .25s ease; }
.faq-a p{ padding-bottom:22px; font-size:14.5px; color:var(--ink-mute); max-width:70ch; }
.faq-item.open .faq-a{ max-height:220px; }

/* ---------- final CTA ---------- */
.cta-final{
  background:linear-gradient(160deg, rgba(139,92,246,0.14), rgba(34,211,238,0.06)), var(--ink);
  color:var(--paper); border-radius:var(--radius-lg);
  padding:64px 50px; text-align:center; position:relative; overflow:hidden;
  border:1px solid var(--line-dark);
  box-shadow:var(--shadow-lift);
}
.cta-final::after{ content:""; position:absolute; inset:0; background:radial-gradient(500px 220px at 50% 0%, rgba(34,211,238,0.35), transparent 65%); }
.cta-final > *{ position:relative; z-index:1; }
.cta-final h2{ color:#fff; font-size:clamp(26px,3.4vw,38px); }
.cta-final p{ color:var(--ink-mute); margin-top:14px; font-size:16px; }
.cta-final .hero-actions{ justify-content:center; margin-top:28px; }

/* ---------- footer ---------- */
footer{ border-top:1px solid var(--line); padding:50px 0 40px; }
.foot-grid{ display:grid; grid-template-columns:1.6fr repeat(3,1fr); gap:30px; }
.foot-grid h5{ font-family:var(--font-mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-mute); margin-bottom:14px; }
.foot-grid a{ display:block; font-size:14px; color:var(--ink-soft); padding:5px 0; transition:color .15s; }
.foot-grid a:hover{ color:var(--cyan); }
.foot-bottom{ margin-top:40px; padding-top:22px; border-top:1px solid var(--line); display:flex; justify-content:space-between; font-size:12.5px; color:var(--ink-mute); flex-wrap:wrap; gap:10px; }
@media (max-width: 800px){ .foot-grid{ grid-template-columns:1fr 1fr; } }

/* ============================================================
   AUTH / LOGIN
   ============================================================ */
.auth-tabs{ display:flex; gap:8px; margin-bottom:26px; }
.auth-tab{ flex:1; }
.auth-tab.active{ background:var(--grad); color:#fff; border-color:transparent; box-shadow:var(--glow-violet-soft); }
.auth-panel h2{ font-size:24px; margin-bottom:8px; }
.auth-panel p.hint{ color:var(--ink-mute); font-size:14px; margin-bottom:24px; }
.auth-error{ background:var(--red-dim); border:1px solid rgba(255,107,132,0.3); color:var(--red); font-size:13px; padding:10px 14px; border-radius:8px; margin-bottom:16px; }
.auth-link{ display:block; text-align:center; font-size:13px; color:var(--cyan); margin-top:16px; }
.auth-divider{ display:flex; align-items:center; gap:12px; margin:28px 0 18px; }
.auth-divider::before, .auth-divider::after{ content:""; flex:1; height:1px; background:var(--line); }
.auth-divider span{ font-size:12px; color:var(--ink-mute); font-family:var(--font-mono); white-space:nowrap; }
.auth-social{ display:flex; flex-direction:column; gap:12px; }
.auth-social .btn{ justify-content:flex-start; padding-left:18px; gap:12px; }
.social-badge{ width:22px; height:22px; border-radius:6px; display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-weight:700; font-size:12px; flex:none; }
.social-badge.google{ background:linear-gradient(135deg,#22D3EE,#8B5CF6); color:#fff; }
.social-badge.github{ background:rgba(255,255,255,0.12); color:#F5F7FC; }
.auth-note{ font-size:12px; color:var(--ink-mute); text-align:center; margin-top:20px; line-height:1.5; }

/* ============================================================
   FORMS / ONBOARDING / CONFIG
   ============================================================ */

.form-shell{ max-width:640px; margin:0 auto; }
.progress-top{ display:flex; align-items:center; gap:10px; margin-bottom:36px; }
.progress-track{ flex:1; height:6px; background:rgba(255,255,255,0.06); border-radius:99px; overflow:hidden; }
.progress-fill{ height:100%; background:var(--grad); border-radius:99px; transition:width .3s ease; box-shadow:0 0 10px rgba(139,92,246,0.5); }
.progress-count{ font-family:var(--font-mono); font-size:12.5px; color:var(--ink-mute); white-space:nowrap; }

.ob-card{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius-lg); padding:40px; box-shadow:var(--shadow-lift); }
.ob-step{ display:none; }
.ob-step.active{ display:block; animation:fadein .25s ease; }
@keyframes fadein{ from{opacity:0; transform:translateY(6px);} to{opacity:1; transform:translateY(0);} }
.ob-step .eyebrow{ margin-bottom:10px; }
.ob-step h2{ font-size:26px; margin-bottom:8px; }
.ob-step > p.hint{ color:var(--ink-mute); font-size:14.5px; margin-bottom:28px; }

.opt-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.opt-grid.cols-1{ grid-template-columns:1fr; }
.opt-grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.opt{
  border:1px solid var(--line); border-radius:var(--radius-md); padding:16px 18px;
  cursor:pointer; background:var(--white); transition:border-color .15s, background .15s, box-shadow .15s;
  display:flex; align-items:center; gap:12px;
}
.opt:hover{ border-color:rgba(139,92,246,0.4); }
.opt.selected{ border-color:var(--violet); background:rgba(139,92,246,0.10); box-shadow:var(--glow-violet-soft); }
.opt .opt-dot{ width:16px; height:16px; border-radius:50%; border:2px solid var(--line); flex:none; }
.opt.selected .opt-dot{ border-color:var(--violet); background:var(--grad); box-shadow:inset 0 0 0 3px rgba(5,6,10,0.6); }
.opt .opt-tx b{ display:block; font-size:14.5px; color:#F5F7FC; }
.opt .opt-tx span{ font-size:12.5px; color:var(--ink-mute); }
@media (max-width: 620px){ .opt-grid, .opt-grid.cols-3{ grid-template-columns:1fr; } }

.select-field{ margin-bottom:18px; }
.select-field label{ display:block; font-size:13px; font-weight:600; color:#F5F7FC; margin-bottom:8px; }
.select-field select, .select-field input[type=text], .select-field input[type=email], .select-field input[type=password]{
  width:100%; padding:13px 14px; border:1px solid var(--line); border-radius:var(--radius-sm);
  background:var(--white); font-size:14.5px; font-family:inherit; color:#F5F7FC;
}
.select-field select:focus, .select-field input:focus{ border-color:var(--violet); }
.select-field select option{ background:#0B0E17; color:#F5F7FC; }

.ob-nav{ display:flex; justify-content:space-between; margin-top:32px; }

/* slider */
.range-field{ margin-bottom:26px; }
.range-field .rf-top{ display:flex; justify-content:space-between; margin-bottom:10px; }
.range-field label{ font-size:13.5px; font-weight:600; color:#F5F7FC; }
.range-field .rf-val{ font-family:var(--font-mono); font-size:13px; color:var(--cyan); }
input[type=range]{ width:100%; accent-color: var(--violet); }

/* toggle row */
.toggle-row{ display:flex; align-items:center; justify-content:space-between; padding:14px 0; border-bottom:1px solid var(--line); }
.toggle-row:last-child{ border-bottom:none; }
.toggle-row .tr-tx b{ font-size:14.5px; color:#F5F7FC; display:block; }
.toggle-row .tr-tx span{ font-size:12.5px; color:var(--ink-mute); }
.switch{ position:relative; width:44px; height:26px; background:rgba(255,255,255,0.08); border-radius:99px; flex:none; transition:background .15s, box-shadow .15s; }
.switch::after{ content:""; position:absolute; top:3px; left:3px; width:20px; height:20px; border-radius:50%; background:#fff; transition:transform .15s; box-shadow:0 1px 3px rgba(0,0,0,.4); }
.switch.on{ background:var(--grad); box-shadow:var(--glow-violet-soft); }
.switch.on::after{ transform:translateX(18px); }

/* summary card */
.summary-card{ background:linear-gradient(160deg, rgba(139,92,246,0.14), rgba(34,211,238,0.05)), var(--ink); color:var(--paper); border-radius:var(--radius-lg); padding:28px 30px; margin-top:26px; border:1px solid var(--line-dark); }
.summary-card h4{ font-family:var(--font-mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:#8FE3D6; margin-bottom:16px; }
.summary-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px 24px; }
.summary-grid div{ font-size:13.5px; color:var(--ink-mute); }
.summary-grid b{ display:block; color:#fff; font-size:14.5px; margin-top:2px; }

/* ============================================================
   DASHBOARD
   ============================================================ */
.dash-grid{ display:grid; grid-template-columns:1.3fr 1fr; gap:24px; align-items:start; }
.card{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px; box-shadow:var(--shadow-card); }
.card h3{ font-size:15px; font-weight:600; margin-bottom:18px; display:flex; align-items:center; justify-content:space-between; color:#F5F7FC; }
.card h3 a{ font-size:12.5px; font-weight:500; color:var(--cyan); }

.score-hero{ display:flex; align-items:center; gap:28px; }
.score-ring{ position:relative; width:132px; height:132px; flex:none; }
.score-ring svg{ transform:rotate(-90deg); }
.score-ring .num{ position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.score-ring .num b{ font-family:var(--font-display); font-size:34px; color:#F5F7FC; }
.score-ring .num span{ font-size:11px; color:var(--ink-mute); font-family:var(--font-mono); }
.score-tx h2{ font-size:20px; margin-bottom:8px; }
.score-tx p{ font-size:14px; color:var(--ink-mute); max-width:38ch; }
.pill{ display:inline-flex; align-items:center; gap:6px; font-family:var(--font-mono); font-size:11.5px; padding:5px 12px; border-radius:99px; background:var(--amber-dim); color:var(--amber); margin-top:12px; border:1px solid rgba(255,180,84,0.25); }

.mini-row{ display:flex; align-items:center; justify-content:space-between; padding:13px 0; border-bottom:1px solid rgba(255,255,255,0.05); }
.mini-row:last-child{ border-bottom:none; }
.mini-row .m-left{ display:flex; align-items:center; gap:12px; }
.m-ic{ width:36px; height:36px; border-radius:9px; background:rgba(139,92,246,0.12); border:1px solid rgba(139,92,246,0.2); display:flex; align-items:center; justify-content:center; font-size:15px; }
.m-tx b{ font-size:13.5px; color:#F5F7FC; display:block; }
.m-tx span{ font-size:12px; color:var(--ink-mute); }
.m-score{ font-family:var(--font-mono); font-size:13px; color:var(--clear); font-weight:600; }
.m-score.low{ color:var(--red); }
.m-score.mid{ color:var(--amber); }

.streak-row{ display:flex; gap:6px; margin-top:6px; }
.streak-day{ flex:1; height:34px; border-radius:7px; background:rgba(255,255,255,0.05); display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-size:11px; color:var(--ink-mute); border:1px solid var(--line); }
.streak-day.on{ background:var(--clear-dim); color:var(--clear); border-color:rgba(47,230,176,0.4); box-shadow:var(--glow-emerald); }

.shortcut-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.shortcut{ border:1px solid var(--line); border-radius:var(--radius-md); padding:18px; display:flex; flex-direction:column; gap:8px; background:var(--white); transition:border-color .15s, box-shadow .15s, transform .15s; }
.shortcut:hover{ border-color:rgba(34,211,238,0.4); box-shadow:0 0 22px -12px rgba(34,211,238,0.4); transform:translateY(-2px); }
.shortcut .ic{ font-size:18px; }
.shortcut b{ font-size:13.5px; color:#F5F7FC; }
.shortcut span{ font-size:12px; color:var(--ink-mute); }

@media (max-width: 980px){ .dash-grid{ grid-template-columns:1fr; } }

/* ============================================================
   PROCESS EXPLANATION PAGE
   ============================================================ */
.compare-grid{ display:grid; grid-template-columns:1fr 1fr; gap:22px; }
.compare-card{ border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px; background:var(--white); box-shadow:var(--shadow-card); }
.compare-card.jr{ border-top:3px solid var(--amber); }
.compare-card.sr{ border-top:3px solid var(--violet); box-shadow:var(--shadow-card), var(--glow-violet-soft); }
.compare-card h4{ font-size:17px; margin-bottom:14px; color:#F5F7FC; }
.compare-card ul li{ font-size:14px; padding:6px 0; color:var(--ink-soft); }
@media (max-width: 760px){ .compare-grid{ grid-template-columns:1fr; } }

.modality-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.modality{ border:1px dashed var(--line); border-radius:var(--radius-md); padding:18px; text-align:center; }
.modality b{ display:block; font-size:14px; color:#F5F7FC; margin-bottom:6px; }
.modality span{ font-size:12.5px; color:var(--ink-mute); }
@media (max-width: 760px){ .modality-grid{ grid-template-columns:1fr; } }

/* ============================================================
   CONFIGURATION PAGE
   ============================================================ */
.config-grid{ display:grid; grid-template-columns:1.4fr 1fr; gap:26px; align-items:start; }
.config-section{ margin-bottom:30px; }
.config-section h3{ font-size:14px; text-transform:uppercase; letter-spacing:.06em; font-family:var(--font-mono); color:var(--ink-mute); margin-bottom:16px; }
@media (max-width: 980px){ .config-grid{ grid-template-columns:1fr; } }

/* ============================================================
   INTERVIEW LIVE SCREEN
   ============================================================ */
.iv-shell{ min-height:100vh; color:var(--paper); }
.iv-top{ border-bottom:1px solid var(--line-dark); padding:18px 0; background:rgba(5,6,10,0.5); backdrop-filter:blur(14px); }
.iv-top .wrap{ display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; }
.iv-role b{ display:block; font-size:15px; color:#fff; }
.iv-role span{ font-size:12px; color:#8B90A0; font-family:var(--font-mono); }
.iv-timer{ display:flex; align-items:center; gap:10px; font-family:var(--font-mono); }
.iv-timer .clock{ font-size:22px; color:var(--cyan); letter-spacing:.03em; text-shadow:0 0 14px rgba(34,211,238,0.5); }
.iv-timer .lbl{ font-size:11px; color:#8B90A0; text-transform:uppercase; letter-spacing:.06em; }
.iv-progress{ font-family:var(--font-mono); font-size:12px; color:#8B90A0; }

.iv-rail{ padding:22px 0; border-bottom:1px solid var(--line-dark); }

.iv-body{ padding:40px 0 30px; }
.iv-chat{ max-width:760px; margin:0 auto 30px; display:flex; flex-direction:column; gap:18px; min-height:220px; }
.msg{ display:flex; gap:14px; max-width:82%; }
.msg .who{ width:34px; height:34px; border-radius:50%; flex:none; display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-size:12px; font-weight:600; }
.msg.interviewer{ align-self:flex-start; }
.msg.interviewer .who{ background:var(--ink-2); border:1px solid var(--line-dark); color:var(--cyan); }
.msg.candidate{ align-self:flex-end; flex-direction:row-reverse; }
.msg.candidate .who{ background:var(--grad); color:#fff; box-shadow:var(--glow-violet-soft); }
.msg .bubble{ background:var(--ink-2); border:1px solid var(--line-dark); border-radius:14px; padding:14px 18px; font-size:14.5px; line-height:1.55; color:#E3E5EA; }
.msg.candidate .bubble{ background:rgba(139,92,246,0.10); border-color:rgba(139,92,246,0.28); }
.msg .bubble .tag{ display:block; font-family:var(--font-mono); font-size:10.5px; color:#7E859A; margin-bottom:6px; text-transform:uppercase; letter-spacing:.06em; }

.iv-answer{ max-width:760px; margin:0 auto; }
.iv-answer textarea{
  width:100%; min-height:120px; resize:vertical;
  background:var(--ink-2); border:1px solid var(--line-dark); border-radius:var(--radius-md);
  color:#fff; font-family:inherit; font-size:14.5px; padding:16px; line-height:1.6;
}
.iv-answer textarea:focus{ border-color:var(--violet); box-shadow:var(--glow-violet-soft); }
.iv-actions{ display:flex; justify-content:space-between; align-items:center; margin-top:16px; flex-wrap:wrap; gap:12px; }
.iv-actions .left-actions{ display:flex; gap:10px; }
.btn-outline-dark{ background:transparent; border:1px solid var(--line-dark); color:#C6CAD3; }
.btn-outline-dark:hover{ border-color:var(--cyan); color:#fff; box-shadow:0 0 16px -6px rgba(34,211,238,0.4); }

.iv-brief{ max-width:760px; margin:0 auto 14px; background:rgba(139,92,246,0.08); border:1px solid rgba(139,92,246,0.25); border-radius:var(--radius-md); padding:16px 20px; font-size:13px; color:#D8CCFF; }

.iv-rubric{ max-width:760px; margin:0 auto 26px; border:1px solid var(--line-dark); border-radius:var(--radius-md); background:var(--ink-2); }
.iv-rubric summary{ cursor:pointer; padding:14px 20px; font-size:13.5px; font-weight:600; color:#C6CAD3; list-style:none; }
.iv-rubric summary::before{ content:"▸ "; color:var(--cyan); }
.iv-rubric[open] summary::before{ content:"▾ "; }
.iv-rubric summary::-webkit-details-marker{ display:none; }
.iv-rubric-body{ display:grid; grid-template-columns:1fr 1fr; gap:20px; padding:0 20px 20px; }
.iv-rubric-body .span-2{ grid-column:1 / -1; }
.iv-rubric-body h5{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--cyan); margin:0 0 8px; }
.iv-rubric-body p{ font-size:13px; color:#C6CAD3; line-height:1.55; margin-bottom:10px; }
.iv-rubric-body ul li{ font-size:12.5px; color:#C6CAD3; padding:4px 0 4px 14px; position:relative; }
.iv-rubric-body ul li::before{ content:"—"; position:absolute; left:0; color:#7E859A; }
.iv-rubric-body p.weak{ background:var(--red-dim); border-left:2px solid var(--red); padding:10px 12px; border-radius:6px; }
.iv-rubric-body p.strong{ background:var(--clear-dim); border-left:2px solid var(--clear); padding:10px 12px; border-radius:6px; }
@media (max-width: 700px){ .iv-rubric-body{ grid-template-columns:1fr; } }

/* ============================================================
   RESULT / FEEDBACK PAGE
   ============================================================ */
.result-hero{ display:grid; grid-template-columns:220px 1fr; gap:36px; align-items:center; }
.result-score{ position:relative; width:190px; height:190px; }
.result-score .num{ position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.result-score .num b{ font-family:var(--font-display); font-size:52px; color:#F5F7FC; }
.result-score .num span{ font-family:var(--font-mono); font-size:12px; color:var(--ink-mute); }
.result-tag{ display:inline-flex; padding:7px 16px; border-radius:99px; font-family:var(--font-mono); font-size:12px; margin-bottom:14px; border:1px solid transparent; }
.result-tag.pass{ background:var(--clear-dim); color:var(--clear); border-color:rgba(47,230,176,0.35); box-shadow:var(--glow-emerald); }
.result-tag.warn{ background:var(--amber-dim); color:var(--amber); border-color:rgba(255,180,84,0.3); }
@media (max-width: 760px){ .result-hero{ grid-template-columns:1fr; text-align:center; } .result-score{ margin:0 auto; } }

.qa-item{ border:1px solid var(--line); border-radius:var(--radius-md); padding:22px; margin-bottom:14px; background:var(--white); box-shadow:var(--shadow-card); }
.qa-item .qa-q{ font-size:14.5px; font-weight:600; color:#F5F7FC; margin-bottom:10px; }
.qa-item .qa-tag{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; color:var(--ink-mute); margin-bottom:8px; display:block; }
.qa-item .qa-fb{ font-size:13.5px; color:var(--ink-soft); background:rgba(255,255,255,0.035); border:1px solid var(--line); border-radius:8px; padding:14px 16px; margin-top:10px; }
.qa-score{ float:right; font-family:var(--font-mono); font-size:13px; color:var(--clear); }

.tag-list{ display:flex; gap:10px; flex-wrap:wrap; }
.tag-chip{ font-size:12.5px; padding:7px 14px; border-radius:99px; background:rgba(255,255,255,0.05); border:1px solid var(--line); color:var(--ink-soft); font-family:var(--font-mono); }
.tag-chip.weak{ background:var(--red-dim); color:var(--red); border-color:rgba(255,107,132,0.3); }
.tag-chip.strong{ background:var(--clear-dim); color:var(--clear); border-color:rgba(47,230,176,0.35); }

/* utility */
.flex-between{ display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.mt-8{ margin-top:8px;} .mt-16{ margin-top:16px;} .mt-24{ margin-top:24px;} .mt-32{ margin-top:32px;} .mt-40{ margin-top:40px;}
.muted{ color:var(--ink-mute); }
.center{ text-align:center; }

@media (max-width: 900px){
  .hero-grid{ grid-template-columns:1fr; }
  .steps-3{ grid-template-columns:1fr; }
  .role-grid{ grid-template-columns:repeat(2,1fr); }
  .benefit-grid{ grid-template-columns:1fr 1fr; }
  .type-grid{ grid-template-columns:1fr; }
  .testi-grid{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  section{ padding:64px 0; }
}