/* styles.css (NewStage V2 — UX-first, simplified, no JS) */

/* ---------- tokens ---------- */
:root{
  --bg: #0b0c10;
  --bg-2: #0f1118;
  --surface: rgba(255,255,255,.06);
  --surface-2: rgba(255,255,255,.09);
  --border: rgba(255,255,255,.12);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);

  --accent: #8b5cf6;   /* violet */
  --accent2: #22d3ee;  /* cyan */

  --radius: 16px;
  --radius-lg: 20px;

  --shadow: 0 14px 36px rgba(0,0,0,.45);

  --container: 1120px;
  --focus: 0 0 0 3px rgba(34,211,238,.35);
}

/* ---------- base ---------- */
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 480px at 20% -10%, rgba(139,92,246,.14), transparent 60%),
    radial-gradient(900px 480px at 90% -10%, rgba(34,211,238,.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  min-height:100vh;
  line-height:1.55;
}
a{ color: inherit; text-decoration:none; }
p{ margin:0 0 12px; }
h1,h2,h3{ margin:0 0 10px; line-height:1.15; }
h1{ font-size: clamp(28px, 3.6vw, 44px); letter-spacing:-0.02em; }
h2{ font-size: clamp(20px, 2.6vw, 30px); letter-spacing:-0.01em; }
.h3{ font-size: 16px; }
.muted{ color: var(--muted); }
.small{ font-size: 12.5px; }

.container{
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

/* accessibility */
.skip-link{
  position:absolute;
  left:-999px;
  top:12px;
  padding:10px 12px;
  background: #111318;
  border: 1px solid var(--border);
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus{ left:16px; outline:none; box-shadow: var(--focus); }
:focus-visible{ outline:none; box-shadow: var(--focus); border-radius: 10px; }

/* ---------- header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,12,16,.65);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 12px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-mark{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(139,92,246,.95), rgba(34,211,238,.75));
  box-shadow: 0 10px 22px rgba(0,0,0,.45);
}
.brand-text{ font-size: 16px; }
.badge{
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.78);
}

.nav{
  display:none; /* mobile-first */
  gap: 10px;
  align-items:center;
}
.nav-link{
  font-size: 13.5px;
  color: rgba(255,255,255,.78);
  padding: 8px 10px;
  border-radius: 12px;
}
.nav-link:hover{
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.92);
}

.header-actions{
  display:flex;
  align-items:center;
  gap: 10px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius: 14px;
  border: 1px solid transparent;
  padding: 10px 14px;
  font-weight: 600;
  font-size: 13.5px;
  cursor:pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, opacity .15s ease;
}
.btn:active{ transform: translateY(1px); }
.btn-primary{
  background: linear-gradient(135deg, rgba(139,92,246,.95), rgba(34,211,238,.55));
  border-color: rgba(255,255,255,.14);
  box-shadow: 0 18px 44px rgba(34,211,238,.06), 0 18px 44px rgba(139,92,246,.08);
}
.btn-primary:hover{ opacity:.96; }
.btn-secondary{
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.16);
}
.btn-secondary:hover{ background: rgba(255,255,255,.08); }
.btn-ghost{
  background: transparent;
  border-color: rgba(255,255,255,.12);
  color: rgba(255,255,255,.80);
}
.btn-ghost:hover{ background: rgba(255,255,255,.05); }
.btn-block{ width:100%; }

/* ---------- mobile menu (details) ---------- */
.menu{ position: relative; }
.menu-btn{ padding: 10px 12px; min-width: 44px; }
.menu > summary{ list-style:none; }
.menu > summary::-webkit-details-marker{ display:none; }
.menu[open] .menu-btn{ border-color: rgba(255,255,255,.26); }

.menu-panel{
  position:absolute;
  right:0;
  top: calc(100% + 10px);
  width: 220px;
  padding: 10px;
  border-radius: var(--radius-lg);
  background: rgba(15,17,24,.96);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: var(--shadow);
}
.menu-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  padding: 6px 6px 10px;
  border-bottom: 1px solid rgba(255,255,255,.10);
  margin-bottom: 8px;
}
.menu-title{ font-weight: 800; font-size: 13px; }
.menu-hint{ font-size: 12px; }
.menu-link{
  display:block;
  padding: 10px 10px;
  border-radius: 12px;
  color: rgba(255,255,255,.84);
}
.menu-link:hover{ background: rgba(255,255,255,.06); }

/* ---------- sections ---------- */
.section{ padding: 44px 0; }
.section-head{
  display:flex;
  flex-direction:column;
  gap: 6px;
  margin-bottom: 16px;
}

/* ---------- cards ---------- */
.card{
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
}

/* ---------- hero ---------- */
.hero{ padding: 26px 0 6px; }
.hero-inner{
  display:grid;
  gap: 14px;
}
.eyebrow{
  display:inline-block;
  font-size: 12.5px;
  color: rgba(255,255,255,.78);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.10);
  padding: 8px 10px;
  border-radius: 999px;
}
.lead{ color: rgba(255,255,255,.74); max-width: 62ch; }
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin: 12px 0 10px;
}
.bullets{
  margin: 10px 0 0;
  padding-left: 18px;
  color: rgba(255,255,255,.72);
}
.hint{ padding: 16px; }
.steps{
  margin: 10px 0 10px;
  padding-left: 18px;
  color: rgba(255,255,255,.78);
}

/* ---------- form ---------- */
.form{ padding: 16px; }
.grid{
  display:grid;
  gap: 12px;
}
.core{ margin-bottom: 12px; }

.fieldset{
  border: 0;
  padding: 0;
  margin: 0;
}
.fieldset legend{
  font-weight: 700;
  font-size: 13.5px;
  margin-bottom: 8px;
}
.row{ display:flex; gap: 10px; flex-wrap:wrap; }

label{
  display:block;
  font-size: 13px;
  color: rgba(255,255,255,.78);
  margin-bottom: 6px;
}
.field{ margin:0; }

input[type="text"],
input[type="number"],
select{
  width: 100%;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.24);
  color: var(--text);
}
input::placeholder{ color: rgba(255,255,255,.42); }
select{
  appearance:none;
  background-image:
    linear-gradient(45deg, transparent 50%, rgba(255,255,255,.65) 50%),
    linear-gradient(135deg, rgba(255,255,255,.65) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 2px), calc(100% - 13px) calc(50% - 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat:no-repeat;
  padding-right: 34px;
}

.choice{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  cursor:pointer;
}
.choice input{ accent-color: var(--accent); }
.choice-inline{ margin-right: 10px; }

.toggle{
  display:flex;
  gap: 8px;
  padding: 6px;
  border-radius: 16px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
}
.toggle-item{ flex:1; position:relative; cursor:pointer; }
.toggle-item input{ position:absolute; opacity:0; pointer-events:none; }
.toggle-item span{
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 10px 10px;
  border-radius: 12px;
  color: rgba(255,255,255,.75);
}
.toggle-item input:checked + span{
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.92);
}

.actions{ margin-top: 10px; }

/* advanced block (details) */
.advanced{
  margin-top: 12px;
  border-top: 1px solid rgba(255,255,255,.10);
  padding-top: 10px;
}
.advanced-summary{
  cursor:pointer;
  font-weight: 700;
  color: rgba(255,255,255,.86);
  padding: 10px 8px;
  border-radius: 14px;
  list-style:none;
}
.advanced-summary::-webkit-details-marker{ display:none; }
.advanced-summary:after{
  content:"▾";
  float:right;
  color: rgba(255,255,255,.60);
}
.advanced[open] .advanced-summary:after{ content:"▴"; }
.advanced-body{ padding: 10px 2px 2px; }
.advanced-grid{ grid-template-columns: 1fr; }
.ranges{ display:grid; gap: 10px; }

.range{ display:grid; gap: 6px; }
input[type="range"]{ width:100%; accent-color: var(--accent2); }

/* ---------- results cards ---------- */
.cards-grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.school{ padding: 16px; }
.school-top{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.school-name{ font-size: 16px; margin:0 0 4px; }
.chips{ display:flex; gap: 8px; flex-wrap:wrap; margin: 10px 0; }
.chip{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.78);
}

.mini-details{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 10px 0 12px;
}
.mini-details > div{
  padding: 10px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.10);
}
.mini-details dt{ font-size: 11.5px; color: rgba(255,255,255,.60); }
.mini-details dd{ margin: 2px 0 0; font-weight: 800; font-size: 12.5px; }

.school-actions{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
}

/* score ring */
.score{ position:relative; width:54px; height:54px; flex: 0 0 auto; }
.score-ring{
  width:54px; height:54px; border-radius:50%;
  background: conic-gradient(rgba(34,211,238,.80) calc(var(--p) * 1%), rgba(255,255,255,.10) 0);
  mask: radial-gradient(circle 20px, transparent 19px, #000 20px);
  border: 1px solid rgba(255,255,255,.12);
}
.score-txt{
  position:absolute; inset:0;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
}
.score-num{ font-weight: 800; font-size: 14px; line-height:1; }
.score-sub{ font-size: 11px; color: rgba(255,255,255,.66); }

/* ---------- compare table ---------- */
.table-card{ padding: 16px; }
.table-wrap{
  overflow:auto;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
}
.compare-table{
  width:100%;
  border-collapse: collapse;
  min-width: 640px; /* allow scroll on mobile */
}
.compare-table th, .compare-table td{
  padding: 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  text-align:left;
  font-size: 13px;
}
.compare-table thead th{
  position: sticky;
  top: 0;
  background: rgba(15,17,24,.92);
}
.pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width: 40px;
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
}
.pill.good{
  background: rgba(34,211,238,.10);
  border-color: rgba(34,211,238,.22);
}
.pill.best{
  background: rgba(139,92,246,.12);
  border-color: rgba(139,92,246,.28);
}
.ai-conclusion{
  margin-top: 12px;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
}
.ai-badge{
  display:inline-block;
  font-weight: 800;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  margin: 0 0 8px;
}
.ai-text{ margin:0; color: rgba(255,255,255,.78); }

/* ---------- FAQ ---------- */
.faq{ display:grid; gap: 10px; }
.faq-item{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  overflow:hidden;
}
.faq-item summary{
  cursor:pointer;
  padding: 14px;
  font-weight: 800;
  color: rgba(255,255,255,.88);
  list-style:none;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary:after{
  content:"＋";
  float:right;
  color: rgba(255,255,255,.62);
}
.faq-item[open] summary:after{ content:"－"; }
.faq-body{ padding: 0 14px 14px; }

/* ---------- contacts / footer ---------- */
.contacts{ padding: 16px; display:grid; gap: 12px; }
.contacts-grid{ display:grid; gap: 10px; }
.contact-item{
  padding: 12px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.10);
}
.contact-k{ margin:0 0 4px; color: rgba(255,255,255,.62); font-size: 12px; }
.contact-v{ margin:0; font-weight: 800; }

.link{
  color: rgba(255,255,255,.86);
  text-decoration: underline;
  text-decoration-color: rgba(34,211,238,.35);
  text-underline-offset: 3px;
}
.link:hover{ text-decoration-color: rgba(139,92,246,.45); }

.site-footer{
  padding: 26px 0 40px;
  border-top: 1px solid rgba(255,255,255,.08);
  background: rgba(11,12,16,.35);
}
.footer-inner{
  display:flex;
  flex-direction:column;
  gap: 14px;
}
.brand--footer .brand-mark{ width: 30px; height: 30px; }
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap: 12px;
  color: rgba(255,255,255,.70);
}

/* ---------- responsive ---------- */
@media (min-width: 768px){
  .nav{ display:flex; }
  .menu{ display:none; } /* hide burger on desktop */
  .hero-inner{
    grid-template-columns: 1.2fr .8fr;
    align-items:start;
    gap: 18px;
  }
  .grid.core{
    grid-template-columns: repeat(2, 1fr);
    align-items:end;
  }
  .advanced-grid{
    grid-template-columns: 1.2fr .8fr;
    gap: 12px;
    align-items:end;
  }
  .cards-grid{ grid-template-columns: repeat(3, 1fr); }
  .contacts{ grid-template-columns: 1.2fr .8fr; }
  .contacts-grid{ grid-template-columns: repeat(3, 1fr); }
  .footer-inner{
    flex-direction: row;
    justify-content: space-between;
    align-items:flex-start;
  }
}

@media (min-width: 1024px){
  .section{ padding: 56px 0; }
}