/* © Paul Tocatlian. All Rights Reserved. */
:root {
  --bg: #f3f2ee;
  --card: #ffffff;
  --ink: #1e1b16;
  --muted: #6b655d;
  --accent: #1a7f6e;
  --accent-dark: #135b50;
  --accent-soft: #d6efe9;
  --warning: #b04a00;
  --error: #8f1d1d;
  --shadow: 0 20px 45px rgba(30, 27, 22, 0.12);
  --radius: 20px;
  font-size: 16px;
}

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

body {
  margin: 0;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top, #ffffff 0%, #f3f2ee 48%, #e4efe9 100%);
  min-height: 100vh;
  overflow-x: clip;
}

.app {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(18px, 3vw, 28px) clamp(14px, 3vw, 24px) clamp(40px, 6vw, 60px);
  position: relative;
}

.app::before,
.app::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(0px);
  opacity: 0.35;
  z-index: -1;
}

.app::before {
  width: 240px;
  height: 240px;
  background: #b7e4d8;
  top: -40px;
  right: 10%;
}

.app::after {
  width: 200px;
  height: 200px;
  background: #f2c59b;
  bottom: 40px;
  left: 8%;
}

.header {
  display: grid;
  gap: 20px;
  align-items: center;
  margin-bottom: 24px;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  min-width: 0;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1a7f6e 0%, #2f9c87 65%, #b7e4d8 100%);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.4);
}

.brand-title {
  font-family: "Fraunces", "Times New Roman", serif;
  font-size: 1.5rem;
  line-height: 1.05;
  margin: 0;
}

.brand-subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.currency-picker {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  width: 100%;
}

.custom-currency {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.toggle-panel details {
  border-radius: 16px;
  padding: 8px 4px;
  width: 100%;
}

.toggle-panel summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 0;
}

.toggle-panel summary::-webkit-details-marker {
  display: none;
}

.toggle-panel summary::marker {
  content: "";
}

.toggle-panel summary::after {
  content: "+";
  margin-left: auto;
  font-weight: 600;
}

.toggle-panel details[open] summary::after {
  content: "–";
}

.panel-toggle {
  border-radius: 16px;
  padding: 8px 4px;
  min-width: 0;
}

.panel-toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 0;
}

.panel-toggle-btn {
  margin-left: auto;
  min-height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.custom-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  min-width: 0;
}

.custom-row > * {
  flex: 1 1 100%;
  min-width: 0;
}

.custom-row button,
.actions button {
  width: 100%;
}

label {
  font-weight: 600;
}

.field-label {
  font-weight: 600;
}

select,
input[type="text"] {
  font-family: inherit;
  font-size: 1rem;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid #d4cfc8;
  background: #fff;
  color: var(--ink);
  box-shadow: inset 0 1px 2px rgba(30, 27, 22, 0.08);
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

select:focus,
input[type="text"]:focus,
button:focus-visible {
  outline: 3px solid rgba(26, 127, 110, 0.3);
  outline-offset: 2px;
}

main {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.footer {
  margin-top: 28px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer p {
  margin: 0;
}

.footer .attribution {
  margin-top: 6px;
}

.footer a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 101, 93, 0.4);
}
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.section-header h1 {
  font-family: "Fraunces", "Times New Roman", serif;
  font-size: 1.8rem;
  margin: 0 0 6px;
}

.muted {
  color: var(--muted);
  margin: 0;
}

.controls {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  min-width: 0;
}

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.error {
  color: var(--error);
  font-size: 0.9rem;
  margin: 0;
  min-height: 1.1em;
}

.actions {
  display: grid;
  gap: 10px;
}

button {
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 14px 22px;
  font-size: 1rem;
  min-height: 48px;
}

button.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 20px rgba(26, 127, 110, 0.2);
}

button.primary:hover {
  background: var(--accent-dark);
}

button.ghost {
  background: transparent;
  border: 1px solid #cbc4bb;
  color: var(--ink);
}

.advanced {
  margin-top: 26px;
}

.manual-panel {
  margin-top: 12px;
  padding: clamp(14px, 3vw, 18px);
  border-radius: 16px;
  background: var(--accent-soft);
  display: grid;
  gap: 12px;
  min-width: 0;
}

.manual-panel[hidden] {
  display: none;
}

.field.inline {
  grid-template-columns: auto 1fr;
  align-items: center;
}

.results {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.results-header h2 {
  margin: 0;
  font-family: "Fraunces", "Times New Roman", serif;
}

.result-amount {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 600;
  line-height: 1.05;
  margin: 0;
  overflow-wrap: anywhere;
}

.history summary,
.bills summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: block;
  min-height: 44px;
  padding: 6px 0;
}

.history summary::-webkit-details-marker,
.bills summary::-webkit-details-marker {
  display: none;
}

.history summary .results-header::after,
.bills summary .results-header::after {
  content: "+";
  margin-left: auto;
  font-weight: 600;
}

.history details[open] summary .results-header::after,
.bills details[open] summary .results-header::after {
  content: "–";
}

.history-list {
  list-style: none;
  padding: 12px 4px 0;
  margin: 0;
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.history-list li {
  border-left: 2px solid #e3ddd6;
  padding-left: 10px;
}

.history-actions {
  margin-top: 12px;
  display: flex;
  justify-content: stretch;
}

.history-actions button {
  width: 100%;
}

.bills details {
  border-radius: 16px;
  padding: 8px 4px;
}

.bills-message {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  padding-top: 8px;
}

.bills-list {
  list-style: none;
  padding: 12px 4px 0;
  margin: 0;
  display: grid;
  gap: 10px;
  color: var(--ink);
  font-size: 0.95rem;
}

.bills-list li {
  border-left: 2px solid #e3ddd6;
  padding-left: 10px;
}

.status {
  min-height: 1.2em;
  color: var(--warning);
  font-size: 0.95rem;
  margin: 0;
}

.status:empty {
  display: none;
  min-height: 0;
}

@media (min-width: 560px) {
  #customCode {
    flex: 1 1 11rem;
  }

  #customName {
    flex: 2.2 1 18rem;
  }

  #customSymbol {
    flex: 1 1 10rem;
  }

  #addCustomBtn {
    flex: 0 1 8rem;
    min-width: 7.5rem;
    width: auto;
  }
}

@media (min-width: 720px) {
  .app {
    padding: 28px 20px 60px;
  }

  .card {
    padding: 26px;
  }

  .actions {
    grid-template-columns: repeat(2, minmax(0, max-content));
    justify-content: start;
  }

  .actions button {
    width: auto;
  }

  .history-actions {
    justify-content: flex-end;
  }

  .history-actions button {
    width: auto;
  }

  .result-amount {
    font-size: 2.3rem;
  }
}

@media (min-width: 920px) {
  .header {
    grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.2fr);
    gap: 28px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  main {
    grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
    align-items: start;
  }

  .custom-row {
    align-items: center;
  }
}