/* =========================================================
   GlobalFX — Premium SaaS design system
   Mobile-first · Pure CSS variables · Glassmorphism
   ========================================================= */

/* ==== Design tokens ==== */
:root {
  color-scheme: light;

  --bg: #f6f7f9;
  --bg-glow-1: rgba(99, 102, 241, 0.16);
  --bg-glow-2: rgba(14, 165, 233, 0.12);
  --bg-grid: rgba(15, 23, 42, 0.035);

  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --surface-2: rgba(255, 255, 255, 0.5);
  --surface-hover: rgba(255, 255, 255, 0.88);
  --header-bg: rgba(255, 255, 255, 0.62);
  --input-bg: rgba(255, 255, 255, 0.82);
  --card-highlight: rgba(79, 70, 229, 0.22);

  --text-1: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;

  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.14);

  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: rgba(79, 70, 229, 0.1);
  --accent-border: rgba(79, 70, 229, 0.22);
  --accent-grad: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

  --success: #059669;
  --success-soft: rgba(5, 150, 105, 0.12);
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.1);
  --warning: #d97706;
  --warning-soft: rgba(217, 119, 6, 0.14);

  --chart-grid: rgba(100, 116, 139, 0.18);
  --skeleton-bg: rgba(100, 116, 139, 0.14);
  --skeleton-shine: rgba(255, 255, 255, 0.55);

  --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(16, 24, 40, 0.07), 0 2px 4px -2px rgba(16, 24, 40, 0.05);
  --shadow-lg: 0 20px 40px -16px rgba(16, 24, 40, 0.18), 0 8px 16px -8px rgba(16, 24, 40, 0.08);
  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.04), 0 12px 32px -16px rgba(16, 24, 40, 0.16);
  --shadow-card-hover: 0 2px 4px rgba(16, 24, 40, 0.05), 0 24px 48px -20px rgba(16, 24, 40, 0.26);
  --shadow-accent: 0 10px 24px -10px rgba(79, 70, 229, 0.5);
  --shadow-dropdown: 0 8px 32px -8px rgba(16, 24, 40, 0.18), 0 2px 8px rgba(16, 24, 40, 0.08);

  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 260ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);

  --font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

html[data-theme="dark"] {
  color-scheme: dark;

  --bg: #08080d;
  --bg-glow-1: rgba(99, 102, 241, 0.2);
  --bg-glow-2: rgba(14, 165, 233, 0.12);
  --bg-grid: rgba(255, 255, 255, 0.03);

  --surface: rgba(255, 255, 255, 0.045);
  --surface-solid: #121218;
  --surface-2: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.07);
  --header-bg: rgba(12, 12, 18, 0.62);
  --input-bg: rgba(255, 255, 255, 0.05);
  --card-highlight: rgba(255, 255, 255, 0.18);

  --text-1: #f1f5f9;
  --text-2: #94a3b8;
  --text-3: #64748b;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --accent-soft: rgba(129, 140, 248, 0.14);
  --accent-border: rgba(129, 140, 248, 0.26);
  --accent-grad: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);

  --success: #34d399;
  --success-soft: rgba(52, 211, 153, 0.14);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.14);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.14);

  --chart-grid: rgba(148, 163, 184, 0.16);
  --skeleton-bg: rgba(148, 163, 184, 0.14);
  --skeleton-shine: rgba(255, 255, 255, 0.08);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35), 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 48px -16px rgba(0, 0, 0, 0.65), 0 8px 16px -8px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px -20px rgba(0, 0, 0, 0.6);
  --shadow-card-hover: 0 2px 4px rgba(0, 0, 0, 0.35), 0 28px 56px -24px rgba(0, 0, 0, 0.75);
  --shadow-accent: 0 10px 24px -10px rgba(129, 140, 248, 0.45);
  --shadow-dropdown: 0 8px 32px -8px rgba(0, 0, 0, 0.7), 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* ==== Reset & base ==== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  background-color: var(--bg);
  color: var(--text-1);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-variant-numeric: tabular-nums;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

img, svg, canvas { display: block; max-width: 100%; }

/* ==== Ambient background ==== */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.ambient-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.85;
  will-change: transform;
}

.ambient-blob-1 {
  width: 560px;
  height: 560px;
  top: -180px;
  left: -140px;
  background: var(--bg-glow-1);
  animation: blobFloat 20s ease-in-out infinite;
}

.ambient-blob-2 {
  width: 520px;
  height: 520px;
  bottom: -200px;
  right: -160px;
  background: var(--bg-glow-2);
  animation: blobFloat 26s ease-in-out infinite reverse;
}

.ambient-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(36px, -24px) scale(1.06); }
}

/* ==== Skip link ==== */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 100;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  transition: top var(--transition-normal);
}
.skip-link:focus { top: 16px; }

/* ==== App shell ==== */
.app-shell {
  min-height: 100vh;
  max-width: 1160px;
  margin: 0 auto;
  padding: 12px 16px 0;
  display: flex;
  flex-direction: column;
}

/* ==== Header ==== */
.app-header {
  position: sticky;
  top: 12px;
  z-index: 50;
}

.app-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 14px;
  border-radius: 16px;
  background: var(--header-bg);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: var(--shadow-sm);
  animation: fadeInDown 0.5s var(--ease-out) both;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--accent-grad);
  box-shadow: var(--shadow-accent);
  flex-shrink: 0;
}

.brand-mark svg { width: 20px; height: 20px; }

.brand-name {
  display: block;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-1);
}

.brand-tag {
  display: block;
  font-size: 0.72rem;
  color: var(--text-2);
}

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

/* ==== Status bar ==== */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 0;
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-3);
  width: 100%;
}
.status-bar[hidden] { display: none; }

.status-bar .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warning);
  animation: statusPulse 1.6s ease-in-out infinite;
  flex-shrink: 0;
}

.status-bar[data-state="live"] { color: var(--success); }
.status-bar[data-state="live"] .status-dot { background: var(--success); }
.status-bar[data-state="error"] { color: var(--danger); }
.status-bar[data-state="error"] .status-dot { background: var(--danger); animation: none; }

@keyframes statusPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.6); opacity: 0.45; }
}

/* ==== Theme toggle ==== */
.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast),
    background-color var(--transition-fast), transform var(--transition-fast),
    box-shadow var(--transition-fast);
}
.theme-toggle:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--surface);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.theme-toggle:active { transform: scale(0.94); }

.theme-icon-wrap {
  position: relative;
  width: 18px;
  height: 18px;
}

.theme-icon {
  position: absolute;
  inset: 0;
  width: 18px;
  height: 18px;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.theme-icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
.theme-icon-moon { opacity: 0; transform: rotate(90deg) scale(0.4); }
html[data-theme="dark"] .theme-icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.4); }
html[data-theme="dark"] .theme-icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }

/* ==== Lite toggle ==== */
.lite-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast),
    background-color var(--transition-fast), transform var(--transition-fast),
    box-shadow var(--transition-fast);
}
.lite-toggle svg { width: 18px; height: 18px; }
.lite-toggle:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--surface);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.lite-toggle:active { transform: scale(0.94); }

.lite-toggle.active {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-soft);
}

/* ==== Lite mode ==== */
html[data-lite="true"] .ambient { display: none; }
html[data-lite="true"] .app-header-inner {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: var(--surface-solid);
  border-color: var(--border-strong);
  box-shadow: none;
}
html[data-lite="true"] .card {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: var(--surface-solid);
  animation: none;
  box-shadow: none;
  border-color: var(--border-strong);
}
html[data-lite="true"] .card:hover {
  transform: none;
  box-shadow: none;
}
html[data-lite="true"] .hero { animation: none; }
html[data-lite="true"] .card::before { display: none; }
html[data-lite="true"] .result-panel::after { display: none; }
html[data-lite="true"] .result-panel { box-shadow: none; border-color: var(--border-strong); }
html[data-lite="true"] .tagline-bar { animation: none; }
html[data-lite="true"] .history-item { animation: none; box-shadow: none; border-color: var(--border-strong); }
html[data-lite="true"] .history-item:hover { transform: none; box-shadow: none; }
html[data-lite="true"] .empty-state { animation: none; }
html[data-lite="true"] .autocomplete-dropdown { animation: none; box-shadow: none; border-color: var(--border-strong); }
html[data-lite="true"] .autocomplete-trigger { box-shadow: none; }
html[data-lite="true"] .result-trend { animation: none; }
html[data-lite="true"] .skeleton::after { animation: none; }
html[data-lite="true"] .status-dot { animation: none; }
html[data-lite="true"] .input, html[data-lite="true"] .select { box-shadow: none; }
html[data-lite="true"] .btn { box-shadow: none; }
html[data-lite="true"] .btn:hover { box-shadow: none; transform: none; }
html[data-lite="true"] .api-btn { box-shadow: none; }
html[data-lite="true"] .api-btn:hover { box-shadow: none; transform: none; }
html[data-lite="true"] .brand-mark { box-shadow: none; }
html[data-lite="true"] .swap-btn { box-shadow: none; }
html[data-lite="true"] .swap-btn:hover { box-shadow: none; filter: none; }
html[data-lite="true"] .theme-toggle, html[data-lite="true"] .lite-toggle { box-shadow: none; }
html[data-lite="true"] .theme-toggle:hover, html[data-lite="true"] .lite-toggle:hover { box-shadow: none; transform: none; }
html[data-lite="true"] .empty-icon { box-shadow: none; }
html[data-lite="true"] *,
html[data-lite="true"] *::before,
html[data-lite="true"] *::after {
  transition-duration: 0.01ms !important;
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
}

/* ==== Hero ==== */
.hero {
  margin: clamp(18px, 4vw, 36px) 0 clamp(14px, 3vw, 24px);
  animation: fadeInUp 0.6s var(--ease-out) both;
}

.hero-eyebrow {
  margin: 0 0 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-title {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  color: var(--text-1);
}

.text-gradient {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  margin: 14px 0 0;
  max-width: 560px;
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  line-height: 1.55;
  color: var(--text-2);
}

/* ==== Layout grid ==== */
.app-main {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

/* ==== Cards ==== */
.card {
  position: relative;
  padding: clamp(16px, 2.5vw, 22px);
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  box-shadow: var(--shadow-card);
  overflow: visible;
  animation: fadeInUp 0.55s var(--ease-out) both;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal),
    border-color var(--transition-normal), background-color var(--transition-normal);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--card-highlight), transparent);
  opacity: 0.7;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  background: var(--surface-hover);
  box-shadow: var(--shadow-card-hover);
}

.card-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.card-head-row {
  align-items: center;
  flex-wrap: wrap;
}

.card-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent-border);
}
.card-icon svg { width: 20px; height: 20px; }

.card-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

.card-subtitle {
  margin: 3px 0 0;
  font-size: 0.8rem;
  color: var(--text-2);
}

/* ==== Forms ==== */
.converter-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.form-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
}

.field-hint {
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-3);
}

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 12px;
  align-items: end;
}

/* ==== Inputs ==== */
.input-wrap { position: relative; }

.input,
.select {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-1);
  background: var(--input-bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.input::placeholder { color: var(--text-3); }

.input:focus,
.select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.select {
  cursor: pointer;
  padding-right: 40px;
}

.select option {
  background: var(--surface-solid);
  color: var(--text-1);
}

.select-chevron {
  position: absolute;
  right: 12px;
  top: 50%;
  width: 16px;
  height: 16px;
  color: var(--text-3);
  pointer-events: none;
  transform: translateY(-50%);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.select-wrap:focus-within .select-chevron {
  transform: translateY(-50%) rotate(180deg);
  color: var(--accent);
}

/* Amount field */
.form-group-amount .input {
  font-size: clamp(1.6rem, 5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  padding: 13px 84px 13px 16px;
}

.input-suffix {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 8px;
  pointer-events: none;
}

/* ==== Swap button ==== */
.swap-btn {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  align-self: center;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 999px;
  color: #fff;
  background: var(--accent-grad);
  box-shadow: var(--shadow-accent);
  cursor: pointer;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal),
    filter var(--transition-normal);
}
.swap-btn svg { width: 20px; height: 20px; }
.swap-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(99, 102, 241, 0.65);
  filter: brightness(1.06);
}
.swap-btn:active { transform: scale(0.92); }
.swap-btn.spinning { animation: swapSpin 0.5s var(--ease-out); }

@keyframes swapSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(180deg); }
}

/* ==== Autocomplete (to currency) ==== */
.autocomplete {
  position: relative;
}

.autocomplete-trigger {
  display: flex;
  align-items: center;
  gap: 0;
  width: 100%;
  padding: 12px 36px 12px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-1);
  background: var(--input-bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  position: relative;
  outline: none;
}

.autocomplete-trigger:hover {
  border-color: var(--accent);
}

.autocomplete-trigger:focus,
.autocomplete-trigger[aria-expanded="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.autocomplete-trigger .select-chevron {
  position: absolute;
  right: 12px;
  top: 50%;
  width: 16px;
  height: 16px;
  color: var(--text-3);
  pointer-events: none;
  transform: translateY(-50%);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.autocomplete-trigger[aria-expanded="true"] .select-chevron {
  transform: translateY(-50%) rotate(180deg);
  color: var(--accent);
}

.autocomplete-value {
  display: flex;
  align-items: center;
  gap: 8px;
}

.autocomplete-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 60;
  background: var(--surface-solid);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-dropdown);
  overflow: hidden;
  animation: dropdownIn 0.18s var(--ease-out) both;
}

.autocomplete-dropdown[hidden] { display: none; }

@keyframes dropdownIn {
  from { opacity: 0; transform: translateY(-6px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.autocomplete-search-wrap {
  position: relative;
  padding: 10px 10px 0;
}

.autocomplete-search-icon {
  position: absolute;
  left: 18px;
  top: 18px;
  width: 16px;
  height: 16px;
  color: var(--text-3);
  pointer-events: none;
}

.autocomplete-search {
  width: 100%;
  font-family: inherit;
  font-size: 0.9rem;
  padding: 10px 12px 10px 36px;
  color: var(--text-1);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast);
}

.autocomplete-search:focus {
  border-color: var(--accent);
}

.autocomplete-search::placeholder {
  color: var(--text-3);
}

.autocomplete-options {
  max-height: 260px;
  overflow-y: auto;
  padding: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.autocomplete-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text-1);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-fast);
}

.autocomplete-option:hover,
.autocomplete-option[aria-selected="true"] {
  background: var(--accent-soft);
}

.autocomplete-option-flag {
  font-size: 1.15rem;
  line-height: 1;
  flex-shrink: 0;
}

.autocomplete-option-body {
  flex: 1;
  min-width: 0;
}

.autocomplete-option-code {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-1);
}

.autocomplete-option-name {
  font-size: 0.76rem;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.autocomplete-option-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  background: var(--input-bg);
  padding: 2px 7px;
  border-radius: 6px;
  flex-shrink: 0;
}

.autocomplete-footer {
  padding: 8px 12px;
  border-top: 1px solid var(--border);
}

.autocomplete-footer[hidden] { display: none; }

.autocomplete-hint {
  font-size: 0.72rem;
  color: var(--text-3);
}

/* ==== Result panel ==== */
.result-panel {
  position: relative;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-soft), transparent 72%);
  border: 1px solid var(--accent-border);
  overflow: hidden;
  transition: border-color var(--transition-normal), background var(--transition-normal);
}

.result-panel::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft), transparent 70%);
  pointer-events: none;
}

.result-panel.is-error {
  border-color: var(--danger-soft);
  background: linear-gradient(135deg, var(--danger-soft), transparent 72%);
}
.result-panel.is-error .result-value { color: var(--danger); }

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.result-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}

.result-body {
  position: relative;
  min-height: 46px;
}

.result-value {
  margin: 6px 0 2px;
  font-size: clamp(1.9rem, 5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-1);
  transition: color var(--transition-normal);
}

.result-trend {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  animation: fadeInUp 0.3s var(--ease-out) both;
}

.result-trend.up { color: var(--success); background: var(--success-soft); }
.result-trend.down { color: var(--danger); background: var(--danger-soft); }

.result-meta {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: var(--text-2);
}

/* ==== Skeleton loading ==== */
.skeleton {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  background: var(--skeleton-bg);
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, var(--skeleton-shine), transparent);
  animation: shimmer 1.5s infinite;
}
.skeleton[hidden] { display: none; }

.result-skeleton {
  position: absolute;
  top: 10px;
  left: 0;
  width: 55%;
  height: 40px;
}

@keyframes shimmer { 100% { transform: translateX(100%); } }

/* ==== Buttons ==== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast),
    border-color var(--transition-fast), box-shadow var(--transition-fast),
    transform var(--transition-fast);
}
.btn svg { width: 16px; height: 16px; }
.btn:hover {
  color: var(--text-1);
  background: var(--surface);
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0) scale(0.97); }

.btn-danger { color: var(--danger); }
.btn-danger:hover {
  color: #fff;
  background: var(--danger);
  border-color: var(--danger);
  box-shadow: 0 8px 20px -10px rgba(220, 38, 38, 0.55);
}

.btn-primary {
  color: #fff;
  background: var(--accent-grad);
  border-color: transparent;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  color: #fff;
  background: var(--accent-hover);
  border-color: transparent;
  box-shadow: 0 12px 28px -10px rgba(99, 102, 241, 0.6);
  filter: brightness(1.06);
}

.convert-btn {
  width: 100%;
  justify-content: center;
  padding: 13px 20px;
  font-size: 0.95rem;
}

/* ==== Chart ==== */
.chart-head {
  align-items: center;
}

.chart-head-left {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.chart-ranges {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.chart-range {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: none;
  color: var(--text-3);
  font-family: inherit;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.chart-range:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.chart-range.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent-border);
}

.chart-container {
  position: relative;
  height: 260px;
}

#rateChart {
  width: 100% !important;
  height: 100% !important;
}

.chart-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-2);
  font-size: 0.85rem;
}
.chart-overlay[hidden] { display: none; }

.chart-overlay-spinner {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 3px solid var(--border-strong);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
.chart-overlay.is-error .chart-overlay-spinner { border-top-color: var(--danger); }

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

/* ==== History ==== */
.history-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.history-list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.history-list::-webkit-scrollbar { width: 8px; }
.history-list::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 8px; }
.history-list::-webkit-scrollbar-track { background: transparent; }

.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-2);
  animation: fadeInUp 0.35s var(--ease-out) both;
  transition: transform var(--transition-fast), border-color var(--transition-fast),
    background-color var(--transition-fast);
}
.history-item:hover {
  transform: translateX(4px);
  border-color: var(--border-strong);
  background: var(--surface);
}

.history-flag { font-size: 1.2rem; line-height: 1; flex-shrink: 0; }
.history-main { flex: 1; min-width: 0; }

.history-pair {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-1);
}

.history-arrow svg { width: 14px; height: 14px; color: var(--text-3); }

.history-rate {
  margin-top: 4px;
  font-size: 0.76rem;
  color: var(--text-2);
}

.history-meta {
  flex-shrink: 0;
  text-align: right;
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--text-3);
}

/* ==== Empty state ==== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: 44px 20px;
  color: var(--text-2);
  animation: fadeInUp 0.4s var(--ease-out) both;
}

.empty-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-3);
  margin-bottom: 6px;
}
.empty-icon svg { width: 26px; height: 26px; }

.empty-title { margin: 0; font-weight: 600; font-size: 0.95rem; color: var(--text-1); }
.empty-text { margin: 0; font-size: 0.82rem; }

/* ==== Side column ==== */
.side-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ==== Footer ==== */
.app-footer {
  margin-top: auto;
  padding: 32px 0 36px;
  text-align: center;
}

.footer-creator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-divider {
  display: block;
  width: 40px;
  height: 2px;
  border-radius: 2px;
  background: var(--border-strong);
  margin-bottom: 4px;
}

.footer-made {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-2);
}

.footer-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}
.footer-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.footer-copy {
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-3);
}

/* ==== Focus visibility (a11y) ==== */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.input:focus-visible,
.select:focus-visible,
.autocomplete-trigger:focus-visible {
  outline: none;
}

/* ==== Motion preferences ==== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==== Keyframes ==== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==== API Selector ==== */
.api-selector {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.api-selector-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}

.api-selector-buttons {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.api-btn {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast),
    border-color var(--transition-fast), box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.api-btn:hover {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--surface);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.api-btn.active {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-soft);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.api-btn:active { transform: scale(0.97); }

.api-btn.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* ==== Tagline bar ==== */
.tagline-bar {
  text-align: center;
  padding: 20px 16px;
  animation: fadeInUp 0.5s var(--ease-out) both;
}

.tagline-text {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.tagline-desc {
  margin: 6px 0 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-2);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ==== Responsive ==== */
@media (min-width: 900px) {
  .layout-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (max-width: 720px) {
  .app-shell { padding: 10px 12px 0; overflow-x: hidden; }
  .app-header { top: 8px; }
  .app-header-inner { min-width: 0; }
  .brand { min-width: 0; }
  .brand-tag { display: none; }

  .status-bar {
    font-size: 0.7rem;
    white-space: normal;
  }
  .status-text {
    max-width: none;
    white-space: normal;
  }

  .card { padding: 16px 14px; border-radius: 18px; }
  .form-grid { gap: 10px; }
  .swap-btn { width: 42px; height: 42px; }
  .chart-container { height: 220px; }

  .chart-head {
    flex-wrap: wrap;
    gap: 12px;
  }

  .chart-ranges {
    margin-left: auto;
  }

  .history-actions {
    width: 100%;
    margin-left: 0;
  }
  .history-actions .btn {
    flex: 1;
    justify-content: center;
  }
}

@media (max-width: 420px) {
  .hero { margin-top: 24px; }
  .hero-title { letter-spacing: -0.03em; }

  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .swap-btn {
    align-self: center;
    margin: -4px 0;
    transform: rotate(90deg);
  }
  .swap-btn:hover { transform: rotate(90deg) translateY(-2px); }
  .swap-btn.spinning { animation: swapSpinMobile 0.5s var(--ease-out); }

  @keyframes swapSpinMobile {
    0% { transform: rotate(90deg); }
    100% { transform: rotate(270deg); }
  }
}