/* ════════════════════════════════════════════════════════════════
   NET CUBS — GOSPEL 444 AESTHETIC LAW
   Purple primary. NO BLUE. ABSOLUTE.
   ════════════════════════════════════════════════════════════════ */

:root {
  --purple: #a855f7;
  --gold: #f59e0b;
  --dark: #0f0f1a;
  --darker: #0a0a0f;
  --glass-bg: rgba(15, 15, 28, 0.88);
  --glass-border: rgba(168, 85, 247, 0.3);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.82);
  --text-muted: rgba(255, 255, 255, 0.55);
  --input-bg: rgba(255, 255, 255, 0.06);
  --input-border: rgba(168, 85, 247, 0.3);
  --input-focus: rgba(168, 85, 247, 0.7);
}

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

html, body {
  width: 100%;
  min-height: 100vh;
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ─── HERO BACKGROUND ─────────────────────────────── */

.hero-bg-wrap {
  position: fixed;
  inset: 0;
  z-index: -1;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(10, 10, 20, 0.80) 0%, rgba(10, 10, 20, 0.94) 100%),
    radial-gradient(circle at 50% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 55%);
}

/* ─── PAGE WRAP ───────────────────────────────────── */

.page-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 50px 20px 50px;
}

/* ─── HERO ────────────────────────────────────────── */

.hero {
  text-align: center;
  max-width: 640px;
  animation: fadeUp 0.8s ease both;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  width: 110px;
  height: 110px;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--purple);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.5);
  margin-bottom: 24px;
  flex-shrink: 0;
}

.hero-badge-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2.8rem, 9vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--gold) 0%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.hero-subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--purple);
  margin-bottom: 18px;
}

.hero-subtitle .vi {
  color: var(--text-muted);
  font-weight: 400;
  font-style: italic;
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  max-width: 500px;
}

.hero-desc-vi {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-btn {
  background: linear-gradient(135deg, var(--purple) 0%, var(--gold) 100%);
  color: var(--darker);
  border: none;
  padding: 16px 32px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.8px;
  cursor: pointer;
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.45);
  transition: all 0.3s ease;
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 50px rgba(168, 85, 247, 0.7);
  letter-spacing: 1.1px;
}

/* ─── SURVEY INTRO ────────────────────────────────── */

.survey-intro {
  background: rgba(168, 85, 247, 0.08);
  border: 1px solid rgba(168, 85, 247, 0.25);
  border-radius: 16px;
  padding: 20px 24px;
  margin-bottom: 32px;
  animation: fadeUp 0.7s ease both;
}

.survey-intro p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.survey-intro-vi {
  margin-top: 10px;
  font-style: italic;
  color: var(--text-muted) !important;
  font-size: 0.85rem !important;
}

/* ─── SURVEY SECTIONS ─────────────────────────────── */

.survey-section {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 28px 28px 24px;
  margin-bottom: 20px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  animation: fadeUp 0.8s ease 0.1s both;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.3px;
}

.section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--gold));
  color: var(--darker);
  font-size: 0.78rem;
  font-weight: 900;
  flex-shrink: 0;
}

/* ─── FIELDS ──────────────────────────────────────── */

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.field-group { display: flex; flex-direction: column; gap: 7px; }

.field-group-full {
  margin-bottom: 16px;
}

.field-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.field-label-vi {
  font-size: 0.78rem;
  font-weight: 400;
  font-style: italic;
  color: var(--text-muted);
}

.field-hint {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.field-input,
.field-textarea {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  padding: 11px 14px;
  font-family: 'Inter', sans-serif;
  font-size: 0.88rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.field-input:focus,
.field-textarea:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 2px rgba(168, 85, 247, 0.2);
}

.field-input::placeholder,
.field-textarea::placeholder {
  color: rgba(255, 255, 255, 0.28);
}

.field-input option {
  background: #1a1a2e;
  color: var(--text-primary);
}

.field-textarea { resize: vertical; min-height: 100px; }

.field-error {
  border-color: #f87171 !important;
  box-shadow: 0 0 0 2px rgba(248, 113, 113, 0.2) !important;
}

/* ─── RADIO GROUP ─────────────────────────────────── */

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  transition: border-color 0.2s;
}

.radio-group.radio-error {
  border-color: #f87171;
  box-shadow: 0 0 0 2px rgba(248, 113, 113, 0.2);
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.87rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.2s;
}

.radio-option:hover { color: var(--text-primary); }

.radio-option input[type="radio"] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  accent-color: var(--purple);
  cursor: pointer;
}

/* ─── SUBMIT SECTION ──────────────────────────────── */

.submit-section {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 28px;
  margin-bottom: 20px;
  text-align: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  animation: fadeUp 0.8s ease 0.2s both;
}

.submit-note {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.6;
}

.submit-note-vi {
  font-size: 0.84rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 24px;
  line-height: 1.6;
}

.submit-btn {
  background: linear-gradient(135deg, var(--purple) 0%, var(--gold) 100%);
  color: var(--darker);
  border: none;
  padding: 16px 40px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.8px;
  cursor: pointer;
  box-shadow: 0 0 25px rgba(168, 85, 247, 0.4);
  transition: all 0.3s ease;
}

.submit-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 45px rgba(168, 85, 247, 0.65);
  letter-spacing: 1.1px;
}

/* ─── CONFIRMATION ────────────────────────────────── */

.confirm-card {
  background: var(--glass-bg);
  border: 2px solid var(--purple);
  border-radius: 24px;
  padding: 48px 36px;
  text-align: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 0 50px rgba(168, 85, 247, 0.3);
  animation: fadeUp 0.8s ease both;
}

.confirm-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.confirm-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--gold), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.confirm-title-vi {
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 24px;
}

.confirm-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.confirm-body-vi {
  font-size: 0.87rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.65;
  margin-bottom: 24px;
}

.confirm-ref {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--purple);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 8px 20px;
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 999px;
  display: inline-block;
}

/* ─── FOOTER ──────────────────────────────────────── */

.footer {
  margin-top: 50px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--gold);
  text-decoration: none;
  font-weight: 600;
}

.footer a:hover { color: var(--purple); }

/* ─── ANIMATIONS ──────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── RESPONSIVE ──────────────────────────────────── */

@media (max-width: 600px) {
  .page-wrap { padding: 36px 16px 40px; }
  .field-row { grid-template-columns: 1fr; }
  .survey-section { padding: 22px 18px 18px; }
  .submit-section { padding: 22px 18px; }
  .confirm-card { padding: 36px 20px; }
  .hero-title { font-size: 2.4rem; }
}