:root {
  --bg: #ffffff;
  --surface: #f8fafc;
  --border: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --gradient-main: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
  --radius: 24px;
  --shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.1);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

/* ================= FUNNEL CARD ================= */
.funnel-card {
  background: var(--bg);
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  text-align: center;
}

.logo-small { height: 30px; margin-bottom: 24px; }

.funnel-title {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 12px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.funnel-desc {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ================= INPUT GROUP ================= */
.input-group {
  text-align: left;
  margin-bottom: 24px;
}

.input-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.funnel-input {
  width: 100%;
  padding: 16px;
  border: 2px solid var(--border);
  border-radius: 16px;
  font-size: 16px;
  outline: none;
  transition: .2s;
  box-sizing: border-box;
  font-family: inherit;
}

.funnel-input:focus {
  border-color: var(--primary);
  background: #fff;
}

/* ================= SEARCHBAR ================= */
.search-wrapper {
  position: relative;
  margin-bottom: 20px;
}

.search-wrapper i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 45px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 14px;
  background: var(--surface);
  outline: none;
  font-family: inherit;
  transition: .2s;
  box-sizing: border-box;
}

.search-input:focus {
  border-color: var(--primary);
  background: #fff;
}

/* ================= INFLUENCER GRID ================= */
.influencer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
  max-height: 320px;
  overflow-y: auto;
  padding: 4px;
}

.influencer-grid::-webkit-scrollbar { width: 4px; }
.influencer-grid::-webkit-scrollbar-track { background: transparent; }
.influencer-grid::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

.influencer-card {
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  cursor: pointer;
  transition: .3s;
  position: relative;
  overflow: hidden;
  background: #fff;
}

.influencer-card:hover {
  border-color: var(--primary);
  background: #f1f5f9;
}

.influencer-card.active {
  border-color: var(--primary);
  background: #eff6ff;
  box-shadow: 0 0 0 1px var(--primary);
}

.influencer-card img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin: 0 auto 12px;
  object-fit: cover;
  border: 2px solid #fff;
}

.inf-name {
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 4px;
}

.inf-discount {
  font-size: 12px;
  color: #059669;
  font-weight: 700;
}

.check-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  color: var(--primary);
  display: none;
}

.influencer-card.active .check-badge { display: block; }

/* ================= CTA BUTTON ================= */
.btn-submit {
  width: 100%;
  padding: 18px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 18px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: .25s;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(37, 99, 235, 0.4);
}

.btn-submit:disabled {
  background: var(--border);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.footer-info {
  margin-top: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 480px) {
  .influencer-grid { grid-template-columns: 1fr; }
}