:root {
  --green: #2c7a37;
  --green-hover: #1e5a27;
  --bg: #eef4ef;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #5a6b5c;
  --error: #c0392b;
  --border: #d0e4d3;
  --radius: 14px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
}

#app {
  width: 100%;
  display: flex;
  justify-content: center;
}

.step {
  width: 100%;
  display: flex;
  justify-content: center;
}

.step[hidden] {
  display: none;
}

/* ── Card ── */

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  width: 100%;
  max-width: 460px;
}

.deal-card {
  max-width: 640px;
  padding: 0;
  overflow: hidden;
}

/* ── Step 1: Zip input ── */

.logo {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 1.65rem;
  font-weight: 700;
  text-align: center;
  color: var(--green);
  margin-bottom: 0.5rem;
}

.tagline {
  color: var(--muted);
  text-align: center;
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.input-row {
  display: flex;
  gap: 0.5rem;
}

input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  outline: none;
  transition: border-color 0.18s;
}

input[type="text"]:focus {
  border-color: var(--green);
}

.btn-primary {
  padding: 0.7rem 1.2rem;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s;
}

.btn-primary:hover {
  background: var(--green-hover);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ── Step 2: Store picker ── */

h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.loading-msg {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  padding: 0.75rem 0;
  font-size: 0.95rem;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.store-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  max-height: 360px;
  overflow-y: auto;
  /* Scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.store-list::-webkit-scrollbar {
  width: 6px;
}

.store-list::-webkit-scrollbar-track {
  background: transparent;
}

.store-list::-webkit-scrollbar-thumb {
  background-color: var(--border);
  border-radius: 3px;
}

.store-list li button {
  width: 100%;
  text-align: left;
  padding: 0.75rem 1rem;
  background: none;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.88rem;
  line-height: 1.4;
  transition: border-color 0.15s, background 0.15s;
}

.store-list li button:hover {
  border-color: var(--green);
  background: #f0f9f2;
}

.store-name {
  display: block;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.store-meta {
  color: var(--muted);
  font-size: 0.8rem;
}

/* ── Step 3: Deal card ── */

.deal-video {
  display: block;
  width: 100%;
  max-height: 340px;
  object-fit: cover;
  background: #000;
}

.deal-video[hidden] {
  display: none;
}

.deal-image {
  display: block;
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  background: #f9f9f9;
  padding: 1rem;
}

.deal-image[hidden] {
  display: none;
}

.deal-body {
  padding: 1.5rem 2rem 0.5rem;
}

.deal-store-name {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--green);
  margin-bottom: 0.4rem;
}

.deal-name {
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 0.85rem;
}

.deal-price-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}

.deal-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green);
  letter-spacing: -0.02em;
}

.deal-savings {
  font-size: 0.95rem;
  color: var(--muted);
}

.deal-expiry {
  font-size: 0.82rem;
  color: var(--muted);
}

/* ── Shared ── */

.error {
  color: var(--error);
  font-size: 0.88rem;
  margin-top: 0.75rem;
}

.card-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 1.5rem;
}

.deal-footer {
  margin-top: 0;
  padding: 1rem 2rem 1.5rem;
}

.back-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s;
}

.back-link:hover {
  color: var(--green);
}

/* ── Responsive ── */

@media (max-width: 480px) {
  .card {
    padding: 1.5rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .deal-body {
    padding: 1.25rem 1.5rem 0.5rem;
  }

  .deal-footer {
    padding: 0.75rem 1.5rem 1.25rem;
  }

  .deal-name {
    font-size: 1.2rem;
  }

  .deal-price {
    font-size: 1.65rem;
  }
}