/* ============================================================
   form-victor — Stylesheet
   Mobile-first, performance-optimized, zero dependencies
   ============================================================ */

:root {
  --primary:        #2979FF;
  --primary-dark:   #1565C0;
  --primary-light:  #E3F0FF;
  --success:        #00C853;
  --success-light:  #E8F5E9;
  --danger:         #FF5252;
  --danger-light:   #FFEBEE;
  --text:           #263238;
  --text-secondary: #546E7A;
  --text-muted:     #90A4AE;
  --border:         #E0E0E0;
  --bg:             #FFFFFF;
  --radius:         10px;
  --shadow:         0 4px 16px rgba(0, 0, 0, .08);
  --transition:     350ms cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button { cursor: pointer; font-family: inherit; }

.progress-bar { position: fixed; top: 0; left: 0; width: 100%; height: 3px; background: var(--border); z-index: 200; }
.progress-fill { height: 100%; background: var(--primary); transition: width var(--transition); width: 0%; will-change: width; }

.form-header {
  position: fixed; top: 3px; left: 0; width: 100%;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}

.brand-name { font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--text); }

.form-container { height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 72px 24px 68px; overflow: hidden; }

.step { display: none; flex-direction: column; width: 100%; max-width: 600px; }
.step.active { display: flex; animation: fadeInUp var(--transition) both; }
.step.exit { display: flex; animation: fadeOutUp 280ms cubic-bezier(0.4,0,1,1) both; pointer-events: none; }

@keyframes fadeInUp { from { opacity:0; transform:translateY(28px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeOutUp { from { opacity:1; transform:translateY(0); } to { opacity:0; transform:translateY(-24px); } }

.step-number { display:flex; align-items:center; gap:5px; font-size:12px; font-weight:700; color:var(--primary); letter-spacing:.04em; text-transform:uppercase; margin-bottom:14px; }
.step-number svg { width:11px; height:11px; flex-shrink:0; }

.step-question { font-size:clamp(20px,4vw,30px); font-weight:800; line-height:1.25; color:var(--text); margin-bottom:28px; }

.input-group { margin-bottom: 20px; }

.form-input {
  width:100%; background:transparent; border:none;
  border-bottom:2px solid var(--border);
  padding:10px 0; font-size:clamp(18px,3.5vw,22px);
  font-family:inherit; font-weight:400; color:var(--text);
  outline:none; transition:border-color var(--transition);
  appearance:none; -webkit-appearance:none;
}
.form-input:focus { border-bottom-color: var(--primary); }
.form-input::placeholder { color: var(--text-muted); font-weight: 300; }

.error-msg { font-size:12px; color:var(--danger); margin-top:6px; min-height:18px; opacity:0; transition:opacity .2s; }
.error-msg.visible { opacity: 1; }

.options-grid { display:flex; flex-direction:column; gap:8px; margin-bottom:8px; }

.option-card {
  display:flex; align-items:center; gap:12px; width:100%;
  padding:13px 16px; background:var(--bg); border:1.5px solid var(--border);
  border-radius:var(--radius); font-size:15px; font-weight:500; color:var(--text);
  text-align:left;
  transition: border-color var(--transition), background var(--transition), transform .15s ease, box-shadow .15s ease;
}
.option-card:hover { border-color:var(--primary); background:var(--primary-light); transform:translateX(3px); }
.option-card:active { transform:translateX(3px) scale(.99); }
.option-card.selected { border-color:var(--primary); background:var(--primary-light); color:var(--primary); box-shadow:0 0 0 1px var(--primary); }

.option-letter {
  display:inline-flex; align-items:center; justify-content:center;
  width:26px; height:26px; flex-shrink:0;
  border:1.5px solid var(--border); border-radius:5px;
  font-size:11px; font-weight:700; letter-spacing:.02em;
  color:var(--text-secondary); transition:all var(--transition);
}
.option-card:hover .option-letter,
.option-card.selected .option-letter { background:var(--primary); border-color:var(--primary); color:#fff; }

.yesno-grid { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-bottom:8px; }

.yesno-card {
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  padding:22px 16px; background:var(--bg); border:1.5px solid var(--border);
  border-radius:var(--radius); font-size:15px; font-weight:700; color:var(--text);
  gap:10px;
  transition: border-color var(--transition), background var(--transition), transform .15s ease;
}
.yesno-card:hover { transform:translateY(-2px); box-shadow:var(--shadow); }
.yesno-card.yes:hover, .yesno-card.yes.selected { border-color:var(--success); background:var(--success-light); color:#1B5E20; }
.yesno-card.no:hover,  .yesno-card.no.selected  { border-color:var(--danger);  background:var(--danger-light);  color:#B71C1C; }

.yesno-emoji { font-size:32px; line-height:1; }

.btn-primary {
  position:relative; display:inline-flex; align-items:center; justify-content:center;
  gap:8px; padding:13px 22px; background:var(--primary); color:#fff;
  border:none; border-radius:var(--radius); font-size:15px; font-weight:700;
  letter-spacing:.01em;
  transition: background var(--transition), transform .15s ease, box-shadow .15s ease;
  min-width:120px;
}
.btn-primary:hover { background:var(--primary-dark); transform:translateY(-1px); box-shadow:0 6px 16px rgba(41,121,255,.35); }
.btn-primary:active { transform:translateY(0); box-shadow:none; }
.btn-primary:disabled, .btn-primary.loading { opacity:.7; pointer-events:none; }

.btn-hint { display:flex; align-items:center; gap:5px; margin-top:10px; font-size:12px; color:var(--text-muted); }
.btn-hint kbd { display:inline-flex; align-items:center; padding:2px 7px; background:#F5F5F5; border:1px solid var(--border); border-radius:4px; font-size:11px; font-family:inherit; color:var(--text-secondary); }

@keyframes spin { to { transform:rotate(360deg); } }
.spinner { display:none; width:16px; height:16px; border:2px solid rgba(255,255,255,.35); border-top-color:#fff; border-radius:50%; animation:spin .65s linear infinite; position:absolute; }
.btn-primary.loading .spinner { display:block; }
.btn-primary.loading .btn-text, .btn-primary.loading svg { opacity:0; }

.intro-tag { display:inline-block; background:var(--primary-light); color:var(--primary); font-size:11px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; padding:4px 12px; border-radius:100px; margin-bottom:20px; }
.intro-title { font-size:clamp(26px,5.5vw,44px); font-weight:900; line-height:1.12; color:var(--text); margin-bottom:16px; }
.intro-subtitle { font-size:15px; color:var(--text-secondary); line-height:1.65; max-width:440px; margin-bottom:32px; }
.intro-meta { display:flex; align-items:center; gap:20px; margin-top:18px; flex-wrap:wrap; }
.intro-meta-item { display:flex; align-items:center; gap:5px; font-size:12px; color:var(--text-secondary); }
.intro-meta-item svg { width:14px; height:14px; flex-shrink:0; color:var(--primary); }

.outcome-icon { font-size:52px; line-height:1; margin-bottom:20px; animation:bounceIn .5s cubic-bezier(.68,-.55,.27,1.55) .2s both; }
@keyframes bounceIn { from { transform:scale(.4); opacity:0; } to { transform:scale(1); opacity:1; } }
.outcome-title { font-size:clamp(22px,4vw,34px); font-weight:900; line-height:1.2; margin-bottom:16px; }
.outcome-title.success { color:#1B5E20; }
.outcome-title.rejected { color:var(--text); }
.outcome-message { font-size:15px; color:var(--text-secondary); line-height:1.7; max-width:460px; }

.form-footer { position:fixed; bottom:0; left:0; width:100%; padding:10px 24px; display:flex; align-items:center; justify-content:space-between; z-index:100; background:rgba(255,255,255,.92); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px); border-top:1px solid var(--border); }

.btn-back { display:flex; align-items:center; gap:6px; padding:8px 12px; background:none; border:1.5px solid var(--border); border-radius:8px; font-size:13px; font-weight:600; color:var(--text-secondary); transition:all .2s; }
.btn-back:hover:not(:disabled) { border-color:var(--primary); color:var(--primary); }
.btn-back:disabled { opacity:.3; cursor:not-allowed; }
.btn-back svg { width:14px; height:14px; }

.footer-brand { font-size:11px; color:var(--text-muted); letter-spacing:.02em; }

@media (max-width: 480px) {
  .form-container { padding:66px 20px 62px; }
  .form-input { font-size:18px; }
  .option-card { padding:12px 14px; font-size:14px; }
  .yesno-card { padding:18px 12px; font-size:14px; }
  .btn-primary { width:100%; justify-content:center; }
  .yesno-grid { grid-template-columns:1fr 1fr; gap:10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration:.01ms !important; transition-duration:.01ms !important; }
}