:root {
  --green-50: #f0f9ec;
  --green-100: #dcefd0;
  --green-500: #4a9d3f;
  --green-600: #3d8433;
  --green-700: #2f6828;
  --brown-500: #8a6240;
  --ink: #223322;
  --muted: #5c6b5c;
  --white: #ffffff;
  --danger: #c0392b;
  --shadow: 0 8px 24px rgba(34, 51, 34, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--green-50);
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

.hidden {
  display: none !important;
}

/* Header */
.site-header {
  background: var(--white);
  box-shadow: 0 2px 8px rgba(34, 51, 34, 0.08);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--green-700);
  text-decoration: none;
}

.auth-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-email {
  color: var(--muted);
  font-size: 0.9rem;
}

.coin-badge {
  background: var(--green-100);
  color: var(--green-700);
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.coin-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  vertical-align: middle;
}

/* Buttons */
.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.05s ease, filter 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--green-500);
  color: var(--white);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-ghost {
  background: transparent;
  color: var(--green-700);
}

.btn-ghost:hover {
  background: var(--green-100);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* Leaderboard */
.leaderboard-section {
  background: var(--white);
  padding: 24px 0;
  border-bottom: 1px solid var(--green-100);
}

.leaderboard-section h2 {
  color: var(--green-700);
  margin: 0 0 14px;
  font-size: 1.15rem;
}

.leaderboard-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--green-50);
}

.leaderboard-rank {
  font-weight: 700;
  color: var(--green-600);
  width: 2.2em;
}

.leaderboard-name {
  flex: 1;
  font-weight: 600;
}

.leaderboard-coins {
  color: var(--green-700);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--green-100), var(--green-50));
  padding: 90px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.2rem;
  margin: 0 0 14px;
  color: var(--green-700);
}

.hero p {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0 0 28px;
}

/* Garden */
.garden-section {
  padding: 48px 0 80px;
}

.garden-section h2 {
  color: var(--green-700);
  margin-bottom: 4px;
}

.garden-hint {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 24px;
}

.plots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.grow-info {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.grow-current {
  color: var(--ink);
}

.grow-current strong {
  color: var(--green-700);
}

.grow-upgrade-row button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.grow-maxed {
  color: var(--green-700);
  font-weight: 600;
}

.plot-card {
  background: var(--white);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 20px 14px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  border: 2px solid transparent;
}

.plot-card.plot-growing {
  border-color: var(--green-100);
}

.plot-card.plot-ready {
  border-color: #f4c542;
  background: #fffaf0;
}

.plot-card.plot-locked {
  background: #f4f4f0;
  opacity: 0.85;
}

.plot-card.plot-locked .plot-label {
  color: var(--muted);
}

.plot-icon {
  font-size: 2.2rem;
  height: 128px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.plant-stage-img {
  max-width: 128px;
  max-height: 128px;
  object-fit: contain;
}

.plot-label {
  font-weight: 600;
  color: var(--ink);
  font-size: 0.9rem;
}

.plot-countdown {
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green-600);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(34, 51, 34, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}

.modal {
  background: var(--white);
  border-radius: 16px;
  padding: 28px;
  width: 100%;
  max-width: 380px;
  position: relative;
  box-shadow: var(--shadow);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}

.modal h3 {
  margin: 0 0 20px;
  color: var(--green-700);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.auth-form input {
  padding: 10px 12px;
  border: 1px solid #cfd9cf;
  border-radius: 8px;
  font-size: 1rem;
}

.form-error {
  color: var(--danger);
  font-size: 0.85rem;
  min-height: 1em;
  margin: 0;
}

/* Shop */
.shop-section {
  padding: 0 0 60px;
}

.shop-section h2 {
  color: var(--green-700);
  margin-bottom: 4px;
}

.shop-hint {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.shop-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.shop-card {
  background: var(--white);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 20px 14px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.shop-icon {
  font-size: 2.2rem;
}

.shop-name {
  font-weight: 700;
  color: var(--ink);
}

.shop-owned {
  color: var(--muted);
  font-size: 0.85rem;
}

.shop-buy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Milestones */
.milestone-section {
  padding: 0 0 60px;
}

.milestone-section h2 {
  color: var(--green-700);
  margin-bottom: 4px;
}

.milestone-hint {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.milestone-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.milestone-card {
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.milestone-locked {
  opacity: 0.75;
}

.milestone-title {
  font-weight: 600;
  color: var(--ink);
}

.milestone-progress {
  color: var(--muted);
  font-size: 0.9rem;
}

.milestone-code-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.milestone-code-input {
  font-family: monospace;
  font-size: 0.95rem;
  padding: 6px 10px;
  border: 1px solid var(--green-100);
  border-radius: 6px;
  background: var(--green-50);
  color: var(--green-700);
  width: 180px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green-700);
  color: var(--white);
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  box-shadow: var(--shadow);
  z-index: 100;
}