:root {
  --purple: #673ab7;
  --purple-dark: #5e35b1;
  --purple-light: #ede7f6;
  --bg: #f0ebf8;
  --card: #ffffff;
  --text: #202124;
  --muted: #5f6368;
  --border: #dadce0;
  --danger: #d93025;
  --success: #188038;
  --shadow: 0 1px 2px rgba(60, 64, 67, 0.15), 0 1px 3px 1px rgba(60, 64, 67, 0.1);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

h1,
h2,
h3 {
  font-family: "Google Sans", Roboto, Arial, sans-serif;
}

.top-bar {
  background: var(--purple);
  color: #fff;
  padding: 20px 24px 28px;
}

.top-bar-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  display: grid;
  place-items: center;
  font-size: 24px;
  font-weight: 700;
}

.top-bar h1 {
  margin: 0 0 4px;
  font-size: 1.5rem;
  font-weight: 500;
}

.top-bar p {
  margin: 0;
  opacity: 0.9;
  font-size: 0.95rem;
}

.page {
  max-width: 960px;
  margin: -16px auto 48px;
  padding: 0 16px;
  display: grid;
  gap: 16px;
}

.form-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.card-header {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.step {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--purple-light);
  color: var(--purple-dark);
  display: grid;
  place-items: center;
  font-weight: 700;
  flex-shrink: 0;
}

.card-header h2 {
  margin: 0 0 4px;
  font-size: 1.15rem;
  font-weight: 500;
}

.card-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.field input,
.field select,
.field textarea,
.coin-row input[type="number"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.coin-row input[type="number"]:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 2px rgba(103, 58, 183, 0.15);
}

.filters-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.grow {
  flex: 1 1 220px;
}

.meta-line {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.coins-list {
  display: grid;
  gap: 12px;
}

.year-group {
  margin-top: 8px;
}

.year-heading {
  margin: 0 0 8px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--purple-light);
  color: var(--purple-dark);
  font-size: 1rem;
  font-weight: 500;
}

.coin-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: grid;
  gap: 12px;
}

.coin-row.dirty {
  border-color: var(--purple);
  background: #faf8ff;
}

.coin-row-actions {
  display: flex;
  justify-content: flex-end;
}

.btn-save {
  background: var(--purple);
  color: #fff;
  padding: 8px 16px;
  font-size: 0.9rem;
}

.btn-save:not(:disabled):hover {
  background: var(--purple-dark);
}

.coin-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.coin-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
}

.coin-subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.coin-thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.coin-thumb-clickable {
  cursor: zoom-in;
  transition: box-shadow 0.15s, transform 0.15s;
}

.coin-thumb-clickable:hover {
  box-shadow: 0 2px 8px rgba(103, 58, 183, 0.25);
  transform: scale(1.04);
}

.image-preview {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
}

.image-preview-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(32, 33, 36, 0.72);
}

.image-preview-panel {
  position: relative;
  z-index: 1;
  max-width: min(920px, 100%);
  max-height: calc(100vh - 48px);
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 16px;
  display: grid;
  gap: 12px;
  overflow: auto;
}

.image-preview-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(32, 33, 36, 0.08);
  color: var(--text);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
}

.image-preview-close:hover {
  background: rgba(32, 33, 36, 0.14);
}

.image-preview-body {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  padding-top: 28px;
}

.image-preview-img {
  max-width: min(420px, 100%);
  max-height: min(70vh, 640px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fafafa;
}

.image-preview-caption {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

body.preview-open {
  overflow: hidden;
}

.coin-row-grouped {
  gap: 16px;
}

.mint-table {
  display: grid;
  gap: 8px;
  overflow-x: auto;
}

.mint-table-row {
  display: grid;
  grid-template-columns: minmax(120px, 1.4fr) repeat(5, minmax(56px, 1fr)) minmax(64px, 0.9fr);
  gap: 8px;
  align-items: center;
}

.mint-table-head {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  font-weight: 500;
}

.mint-table-row input[type="number"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  font: inherit;
  background: #fff;
}

.mint-table-row input[type="number"]:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 2px rgba(103, 58, 183, 0.15);
}

.mint-label {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
}

.mint-total,
.mint-table-sum .sum-total {
  padding: 8px 10px;
  font-size: 0.9rem;
}

.mint-table-sum {
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  font-weight: 700;
  color: var(--purple-dark);
}

.mint-table-sum .sum-grade {
  padding: 8px 10px;
  background: var(--purple-light);
  border-radius: 4px;
  text-align: center;
}

.grade-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.grade-grid label {
  display: grid;
  gap: 4px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.grade-grid .total-label {
  font-weight: 700;
  color: var(--purple-dark);
}

.total-display {
  padding: 10px 12px;
  background: var(--purple-light);
  border-radius: 4px;
  font-weight: 700;
  text-align: center;
}

.btn {
  border: none;
  border-radius: 4px;
  padding: 10px 18px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 24px 0 8px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #323232;
  color: #fff;
  padding: 12px 20px;
  border-radius: 4px;
  box-shadow: var(--shadow);
  z-index: 100;
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--danger);
}

.auth-user {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 6px 8px;
}

.auth-user-picture {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.auth-user-name,
.auth-user-email {
  margin: 0;
  line-height: 1.2;
}

.auth-user-name {
  font-size: 0.84rem;
  font-weight: 500;
}

.auth-user-email {
  font-size: 0.76rem;
  opacity: 0.9;
}

.btn-logout {
  padding: 8px 12px;
  font-size: 0.84rem;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn-logout:hover {
  background: rgba(255, 255, 255, 0.28);
}

.auth-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.hidden {
  display: none !important;
}

@media (max-width: 720px) {
  .grade-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .mint-table-row {
    grid-template-columns: minmax(88px, 1fr) repeat(5, minmax(44px, 1fr)) minmax(52px, 0.8fr);
    gap: 6px;
  }

  .mint-label {
    font-size: 0.75rem;
  }

  .top-bar-inner {
    align-items: stretch;
  }

  .auth-user {
    justify-content: space-between;
    border-radius: 12px;
  }
}