/* =========================
   PALETA DORADA PREMIUM
========================= */
:root {
  --bg: #fafafa;
  --bg-card: rgba(255, 255, 255, 0.85);
  --text: #1c1c1c;
  --muted: #6b6b6b;

  --gold: #c9a24d;
  --gold-soft: rgba(201,162,77,0.15);

  --border: rgba(0,0,0,0.08);
  --radius: 18px;
  --shadow: 0 30px 60px rgba(0,0,0,0.1);
}

body.dark {
  --bg: #0b0b0b;
  --bg-card: rgba(20, 20, 20, 0.85);
  --text: #f1f1f1;
  --muted: #a0a0a0;

  --gold: #d4af37;
  --gold-soft: rgba(212,175,55,0.2);

  --border: rgba(255,255,255,0.12);
}

/* =========================
   RESET + BODY
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", system-ui, sans-serif;
}

body {
  background:
    radial-gradient(circle at top, var(--gold-soft), transparent 60%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 40px 16px;
}

/* =========================
   CONTAINER
========================= */
.container {
  max-width: 1100px;
  margin: auto;
}

.glass {
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
  border: 1px solid var(--border);
}

/* =========================
   CONVERSOR – INPUTS Y SELECTS
========================= */
.converter-section {
  max-width: 720px;
  margin: auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 30px;
}

.converter-section input,
.converter-section select {
  width: 100%;
  padding: 16px 18px;
  font-size: 1.1rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  outline: none;
  transition: border 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.converter-section input::placeholder {
  color: rgba(255,255,255,0.6);
}

.converter-section input:hover,
.converter-section select:hover {
  background: rgba(255,255,255,0.12);
}

.converter-section input:focus,
.converter-section select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-soft);
  background: rgba(255,255,255,0.15);
}

/* =========================
   RESULTADO
========================= */
.result-section {
  text-align: center;
  margin: 40px auto 50px;
  max-width: 700px;
  opacity: 0;
  transform: translateY(10px);
  transition: 0.5s;
}

.result-section.visible {
  opacity: 1;
  transform: translateY(0);
}

#result {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

#rateInfo {
  margin-top: 10px;
  color: var(--muted);
}

.change-info {
  margin-top: 6px;
  font-size: 0.9rem;
}

.change-info .up { color: #1db954; }
.change-info .down { color: #e53935; }
.change-info .dot { margin: 0 6px; color: var(--muted); }

.swap-error {
  margin-top: 8px;
  font-size: 0.85rem;
  color: #ff5a5a;
}

button,
.swap-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
  color: var(--text);
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.swap-btn {
  background: linear-gradient(135deg, var(--gold), #e6c36a);
  color: #000;
  border: none;
  margin-top: 18px;
}

.swap-btn:hover {
  transform: rotate(180deg) scale(1.05);
  box-shadow: 0 12px 34px var(--gold-soft);
}

/* =========================
   HISTORIAL PREMIUM
========================= */
.history-section {
  max-width: 880px;
  margin: 40px auto 70px;
  padding: 0 16px;
}

#historyList {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

#historyList li {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px 18px 26px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  transition: 0.25s ease;
  opacity: 0;
  transform: translateY(6px);
}

#historyList li.show { opacity: 1; transform: translateY(0); }
#historyList li.removing { opacity: 0; transform: translateX(20px); }

#historyList li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: 3px;
  background: var(--border);
}

#historyList li.active,
#historyList li.latest {
  border-color: var(--gold);
  background: linear-gradient(to right, var(--gold-soft), transparent 70%);
}

#historyList li.active::before,
#historyList li.latest::before { background: var(--gold); }

.history-badge {
  display: inline-block;
  align-self: flex-start;
  margin-top: 4px;
  padding: 2px 8px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 999px;
  background: var(--gold);
  color: #000;
}

.history-main strong { font-size: 0.95rem; font-weight: 600; color: var(--text); }
.history-date { font-size: 0.75rem; color: var(--muted); }
.history-delete {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  font-size: 0.9rem;
  color: var(--muted);
  cursor: pointer;
  opacity: 0.6;
  transition: 0.2s;
}

.history-delete:hover { opacity: 1; color: crimson; }

.history-more { display: none; margin-top: 20px; text-align: center; }
.history-more button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 0.9rem;
  cursor: pointer;
}
.history-more button:hover { border-color: var(--gold); }

.history-controls {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.history-controls button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  color: var(--text);
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.history-controls button:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px var(--gold-soft);
  border-color: var(--gold);
  background: linear-gradient(135deg, var(--gold-soft), rgba(255,255,255,0.08));
  color: #000;
}
.history-controls button:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 4px 12px var(--gold-soft);
}

/* =========================
   GRÁFICA PREMIUM
========================= */
.chart-section {
  margin: 40px 0;
  text-align: center;
}

.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  box-shadow: var(--shadow);
  position: relative;
}

#chart { border-radius: var(--radius); }

.chart-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.chart-controls button {
  padding: 10px 20px;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  color: var(--text);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.chart-controls button.active,
.chart-controls button:hover {
  background: linear-gradient(135deg, var(--gold-soft), rgba(255,255,255,0.08));
  border-color: var(--gold);
  color: #000;
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px var(--gold-soft);
}

.chart-controls button:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 4px 12px var(--gold-soft);
}

.chart-tooltip {
  background: var(--bg-card);
  border: 1px solid var(--gold);
  border-radius: 14px;
  padding: 6px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #000;
  display: inline-block;
  min-width: 100px;
  box-shadow: 0 8px 24px var(--gold-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  opacity: 0;
  pointer-events: none;
  position: relative;
  margin-top: 8px;
}

#stats {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
#stats span { font-weight: 600; color: var(--gold); }

/* =========================
   GUÍA DE BOLSILLO
========================= */
.pocket-guide h3 {
  text-align: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 18px;
}

.guide-item {
  background: var(--bg-card);
  border-radius: 18px;
  padding: 18px;
  text-align: center;
  border: 1px solid var(--border);
  font-weight: 600;
  transition: 0.3s;
}

.guide-item:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.guide-item span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.guide-note {
  margin-top: 14px;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

/* =========================
   BOTONES GUÍA DE BOLSILLO
========================= */
.guide-actions-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.guide-actions-left,
.guide-actions-right {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.button-group {
  display: flex;
  gap: 8px;
}

.guide-actions-left button,
.guide-actions-right button {
  background: var(--gold);
  color: #000;
  border: none;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
}

.guide-actions-left button:hover,
.guide-actions-right button:hover {
  transform: translateY(-2px);
}

.guide-msg {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--muted);
  text-align: center;
  margin: 2px 0;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 640px) {
  .pocket-guide {
    position: relative;
    z-index: 1;
    overflow: visible;
  }

  .guide-actions-wrapper {
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
  }

  .guide-actions-left button,
  .guide-actions-right button {
    width: 90%;
    max-width: 300px;
    margin-bottom: 8px;
  }

  .button-group {
    flex-direction: column;
    width: 100%;
    gap: 8px;
  }

  .guide-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* =========================
   IMPRESIÓN
========================= */
@media print {
  body * {
    visibility: hidden;
  }

  .pocket-guide, .pocket-guide * {
    visibility: visible;
  }

  .guide-actions-wrapper {
    display: none !important;
  }

  .pocket-guide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 20px;
    margin: 0;
    font-family: "Arial", sans-serif;
    font-size: 14px;
    line-height: 1.3;
    color: #333;
    border-radius: 0;
    background: none;
    box-shadow: none;
  }

  .guide-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .guide-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border: 1px solid rgba(0,0,0,0.15);
    border-radius: 0;
    background: none;
  }

  .guide-item span {
    text-align: right;
    font-weight: 500;
  }

  .guide-note {
    margin-top: 12px;
    font-style: italic;
    text-align: center;
    font-size: 13px;
  }

  * {
    page-break-inside: avoid;
  }

  html, body {
    height: auto;
    overflow: visible;
    margin: 0;
    padding: 0;
    background: none;
  }
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
  .converter-section { grid-template-columns: 1fr; }
  .swap-btn { width: 90%; max-width: 300px; }
  .chart-controls { gap: 8px; }
}
@media (max-width: 480px) {
  .chart-controls button { padding: 8px 16px; font-size: 0.85rem; }
}