:root {
  --orange: #ff7a1a;
  --orange-dark: #d65500;
  --blue: #0a3a6b;
  --blue-dark: #062547;
  --blue-soft: #0f5fa4;
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #0a1a2c;
  --muted: #5a6a82;
  --border: #e3e8f1;
  --danger: #c1272d;
  --radius: 16px;
  --shadow: 0 8px 24px rgba(10, 58, 107, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container { width: 100%; max-width: 980px; margin: 0 auto; padding: 0 16px; }

/* Topbar */
.topbar {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-soft) 100%);
  color: #fff;
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.topbar-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; }
.brand-info { color: #fff; }
.brand-clip { color: var(--orange); }
.vivatech-mark {
  font-weight: 900;
  letter-spacing: 1px;
  font-size: 16px;
  background: #fff;
  color: var(--blue);
  padding: 6px 10px;
  border-radius: 8px;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.vt-v { color: var(--orange); font-size: 20px; }
.vt-text { color: var(--blue); }
.vt-tech { color: var(--blue); margin-left: 2px; }
.vt-year {
  background: var(--orange);
  color: #fff;
  padding: 2px 6px;
  margin-left: 6px;
  border-radius: 4px;
  font-size: 12px;
}

main { flex: 1; padding: 24px 0 48px; }

.view { animation: fade-in 0.4s ease; }
.hidden { display: none !important; }

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero */
.hero { text-align: center; padding: 8px 0 16px; }
.hero h1 {
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1.1;
  margin: 0 0 12px;
  color: var(--blue);
  font-weight: 800;
  letter-spacing: -1px;
}
.lead { font-size: 17px; color: var(--text); max-width: 640px; margin: 0 auto; }
.accent-orange { color: var(--orange); }

/* Countdown */
.countdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  max-width: 520px;
  margin: 20px auto 8px;
}
.cd-cell {
  background: linear-gradient(160deg, var(--blue), var(--blue-soft));
  color: #fff;
  border-radius: var(--radius);
  padding: 14px 4px 12px;
  text-align: center;
  box-shadow: var(--shadow);
}
.cd-num { font-size: clamp(28px, 7vw, 44px); font-weight: 800; line-height: 1; letter-spacing: -1px; }
.cd-lbl { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; opacity: 0.85; margin-top: 6px; }
.cd-caption { text-align: center; color: var(--muted); font-size: 14px; margin: 6px 0 24px; }

/* Cards */
.cards { display: grid; gap: 20px; margin-top: 12px; }
@media (min-width: 800px) {
  .cards { grid-template-columns: 1fr 1fr; align-items: start; }
}
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.card h2 { margin: 0 0 12px; color: var(--blue); font-size: 22px; }
.muted { color: var(--muted); font-size: 14px; }

.qr-card { text-align: center; }
.qr-wrap {
  background: #fff;
  border: 4px solid var(--blue);
  border-radius: 12px;
  display: inline-block;
  padding: 8px;
  margin: 12px 0 8px;
}
.qr-wrap img { display: block; width: 100%; max-width: 280px; height: auto; }
.qr-url { font-weight: 700; color: var(--orange); letter-spacing: 0.5px; margin: 8px 0 0; }

/* Form */
.field { display: block; margin-bottom: 14px; }
.field > span { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; color: var(--blue); }
.field input, .field textarea, .custom-slot, textarea#custom-note {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
}
.field input:focus, .field textarea:focus, .custom-slot:focus, textarea#custom-note:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.18);
}
.hint { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }

.captcha {
  display: grid;
  grid-template-columns: auto auto 1fr;
  grid-template-areas: "img reload input" "img reload input";
  gap: 8px;
  align-items: center;
  margin: 14px 0;
  padding: 12px;
  background: #f9fafd;
  border: 1px dashed var(--border);
  border-radius: 12px;
}
.captcha-img { grid-area: img; width: 140px; height: 50px; display: flex; align-items: center; justify-content: center; }
.captcha-img svg { width: 100%; height: 100%; }
.captcha-reload {
  grid-area: reload;
  background: var(--blue);
  color: #fff;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
}
.captcha-reload:hover { background: var(--blue-dark); }
.captcha-input { grid-area: input; margin: 0; }
.captcha-input > span { font-size: 12px; margin-bottom: 2px; }
.captcha-input input { padding: 8px 10px; font-size: 16px; text-transform: uppercase; letter-spacing: 4px; font-weight: 700; }

.consent { display: flex; gap: 10px; align-items: flex-start; margin: 14px 0; font-size: 13px; color: var(--muted); cursor: pointer; }
.consent input { margin-top: 3px; flex-shrink: 0; }

.btn-primary {
  display: block;
  width: 100%;
  padding: 14px 16px;
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  font-family: inherit;
}
.btn-primary:hover { background: var(--orange-dark); }
.btn-primary:active { transform: scale(0.99); }
.btn-primary[disabled] { background: #b8bfc9; cursor: not-allowed; }

.form-error { color: var(--danger); font-size: 14px; margin: 8px 0 0; min-height: 1em; font-weight: 600; }

/* Thanks */
.thanks-hero { text-align: center; padding: 8px 0 16px; position: relative; }
.thanks-hero h1 { font-size: clamp(28px, 6vw, 40px); color: var(--blue); margin: 0 0 8px; }
.confetti {
  position: absolute;
  inset: -10px 0 auto 0;
  height: 80px;
  background-image:
    radial-gradient(circle at 10% 30%, var(--orange) 0 4px, transparent 5px),
    radial-gradient(circle at 30% 60%, var(--blue) 0 4px, transparent 5px),
    radial-gradient(circle at 50% 20%, var(--orange) 0 4px, transparent 5px),
    radial-gradient(circle at 70% 50%, var(--blue-soft) 0 4px, transparent 5px),
    radial-gradient(circle at 90% 35%, var(--orange) 0 4px, transparent 5px);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  pointer-events: none;
  opacity: 0.7;
}

.pitch-card { margin-top: 20px; }
.pitch-card h2 { font-size: 22px; line-height: 1.25; }
.pitch-points { padding-left: 20px; margin: 12px 0 0; }
.pitch-points li { margin-bottom: 6px; }

.slot-card { margin-top: 20px; }

.tabs { display: flex; gap: 8px; margin: 12px 0 16px; border-bottom: 1px solid var(--border); }
.tab {
  background: none;
  border: none;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  font-family: inherit;
}
.tab.active { color: var(--orange); border-bottom-color: var(--orange); }

.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.slot-btn {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--blue);
  cursor: pointer;
  transition: all 0.12s;
  font-family: inherit;
}
.slot-btn:hover { border-color: var(--orange); background: #fff7f0; }
.slot-btn.selected { background: var(--orange); border-color: var(--orange); color: #fff; }
.slot-btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.slot-empty { grid-column: 1 / -1; color: var(--muted); text-align: center; padding: 20px; }

#custom-note { margin-top: 10px; min-height: 70px; resize: vertical; }
.custom-slot { margin-bottom: 6px; }

footer {
  background: var(--blue-dark);
  color: #fff;
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
}
footer a { color: var(--orange); text-decoration: none; }
footer a:hover { text-decoration: underline; }