/* ═══════════════════════════════════
   DESIGN TOKENS
═══════════════════════════════════ */
:root {
  --bg: #0a0a0f;
  --bg-2: #111118;
  --bg-3: #18181f;
  --bg-card: #16161d;
  --border: #2a2a38;
  --border-2: #333345;
  --accent: #7c6af7;
  --accent-2: #a594ff;
  --accent-glow: rgba(124,106,247,0.18);
  --gold: #f5c842;
  --gold-dim: #c9a42a;
  --silver: #b0c4d8;
  --green: #4ade80;
  --yellow: #facc15;
  --red: #f87171;
  --text: #ededf5;
  --text-2: #a0a0be;
  --text-3: #6a6a8a;
  --radius: 14px;
  --radius-sm: 8px;
  --font-ui: 'Syne', sans-serif;
  --font-body: 'Noto Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
}
[data-theme="light"] {
  --bg: #f0f0f7;
  --bg-2: #e8e8f2;
  --bg-3: #dcdcee;
  --bg-card: #ffffff;
  --border: #d0d0e0;
  --border-2: #c0c0d8;
  --accent: #5c4de0;
  --accent-2: #7b6bf5;
  --accent-glow: rgba(92,77,224,0.12);
  --gold: #b8860b;
  --gold-dim: #9a7000;
  --silver: #607080;
  --green: #16a34a;
  --yellow: #ca8a04;
  --red: #dc2626;
  --text: #1a1a2e;
  --text-2: #3d3d60;
  --text-3: #6060a0;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
}

/* ═══════════════════════════════════
   RESET & BASE
═══════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ═══════════════════════════════════
   BACKGROUND GRID
═══════════════════════════════════ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.25;
  pointer-events: none;
  z-index: 0;
}

/* ═══════════════════════════════════
   LAYOUT
═══════════════════════════════════ */
.page {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin: 0 auto;
  padding: 0 16px 80px;
}

/* ═══════════════════════════════════
   HEADER
═══════════════════════════════════ */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 20px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.brand h1 {
  font-family: var(--font-ui);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-2), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand .version {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  font-weight: 500;
}
.header-actions { display: flex; gap: 8px; align-items: center; }
.icon-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: all 0.15s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); }

/* ═══════════════════════════════════
   MODE TABS
═══════════════════════════════════ */
.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 16px;
}
.tab-btn {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 9px 12px;
  border: none;
  border-radius: calc(var(--radius) - 4px);
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
  color: var(--text-3);
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.tab-btn.active {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

/* ═══════════════════════════════════
   FILTER CHIPS
═══════════════════════════════════ */
.filters {
  display: flex;
  flex-wrap: wrap;          /* semua chip terlihat di desktop */
  gap: 6px;
  padding-bottom: 4px;
  margin-bottom: 14px;
}

/* Mobile: geser horizontal agar kompak */
@media (max-width: 520px) {
  .filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    /* padding kanan agar chip terakhir tidak terpotong */
    padding-right: 16px;
  }
  .filters::-webkit-scrollbar { display: none; }
}
.chip {
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 13px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg-3);
  color: var(--text-3);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.chip:hover { border-color: var(--accent); color: var(--accent-2); }
.chip.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent-2); }
.chip.gold-chip.active { background: rgba(245,200,66,0.12); border-color: var(--gold); color: var(--gold); }

/* ═══════════════════════════════════
   MAIN CARD
═══════════════════════════════════ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 12px;
}

/* VALUE INPUT */
.value-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.value-label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  min-width: 32px;
}
.value-input-wrap { flex: 1; position: relative; }
.main-input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 600;
  padding: 10px 14px;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.15s;
  -moz-appearance: textfield;
}
.main-input::-webkit-outer-spin-button,
.main-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.main-input:focus { outline: none; border-color: var(--accent); }

/* UNIT SELECTORS */
.units-row {
  display: grid;
  grid-template-columns: 1fr 40px 1fr;
  gap: 8px;
  align-items: start;
}
.unit-col { display: flex; flex-direction: column; gap: 6px; }
.unit-label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.search-box {
  position: relative;
}
.search-box input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.82rem;
  padding: 8px 10px 8px 30px;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.15s;
}
.search-box input:focus { outline: none; border-color: var(--accent); }
.search-icon {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  font-size: 0.75rem;
  pointer-events: none;
}
.unit-select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 9px 10px;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s;
  -webkit-appearance: none;
}
.unit-select:focus { outline: none; border-color: var(--accent); }
.unit-select optgroup { color: var(--text-2); font-weight: 600; }
.unit-select option { color: var(--text); background: var(--bg-3); }

.unit-info {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.4;
  min-height: 32px;
  padding: 4px 2px;
}
.unit-info strong { color: var(--text-2); }

/* SWAP BUTTON */
.swap-col {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 36px;
}
.swap-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--bg-3);
  color: var(--text-2);
  cursor: pointer;
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}
.swap-btn:hover { border-color: var(--accent); color: var(--accent); transform: rotate(180deg); }
.swap-btn.spin { animation: spin 0.3s ease; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(180deg); } }

/* ═══════════════════════════════════
   RESULT
═══════════════════════════════════ */
.result-card {
  background: linear-gradient(135deg, var(--bg-3), var(--bg-card));
  border: 1.5px solid var(--border-2);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 12px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.result-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, var(--accent-glow), transparent 70%);
  pointer-events: none;
}
.result-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.result-value {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 6vw, 2.2rem);
  font-weight: 600;
  color: var(--accent-2);
  letter-spacing: -0.02em;
  word-break: break-all;
  transition: all 0.2s;
}
.result-value.flash { animation: flash 0.35s ease; }
@keyframes flash {
  0% { transform: scale(1); }
  40% { transform: scale(1.06); color: var(--gold); }
  100% { transform: scale(1); }
}
.result-formula {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  margin-top: 6px;
}

/* ═══════════════════════════════════
   NOTICE BANNERS
═══════════════════════════════════ */
.notice {
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.8rem;
  line-height: 1.5;
  margin-bottom: 10px;
  display: none;
  white-space: pre-line;
}
.notice.info { background: rgba(124,106,247,0.08); border: 1px solid rgba(124,106,247,0.25); color: var(--text-2); }
.notice.warning { background: rgba(245,200,66,0.08); border: 1px solid rgba(245,200,66,0.3); color: var(--text-2); }
.notice.error { background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.3); color: var(--red); }
.notice .notice-title { font-weight: 600; color: var(--text); margin-bottom: 4px; }

/* ═══════════════════════════════════
   GOLD MODE PANEL
═══════════════════════════════════ */
.gold-panel { display: none; }
.gold-panel.visible { display: block; }
.gold-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.gold-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 90px;
}
.gold-pill-label { font-size: 0.67rem; color: var(--text-3); font-family: var(--font-ui); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 3px; }
.gold-pill-value { font-family: var(--font-mono); font-size: 0.9rem; font-weight: 600; color: var(--gold); }

.price-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: 0.75rem;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.status-dot.live { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.cached { background: var(--yellow); }
.status-dot.offline { background: var(--red); }
.status-dot.loading { background: var(--text-3); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }
.status-text { color: var(--text-2); flex: 1; }
.status-source { color: var(--text-3); font-family: var(--font-mono); font-size: 0.7rem; }
.refresh-btn {
  padding: 3px 8px;
  font-size: 0.7rem;
  font-family: var(--font-ui);
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  transition: all 0.15s;
}
.refresh-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ═══════════════════════════════════
   CUSTOM PRICE
═══════════════════════════════════ */
.custom-price-row {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 4px;
}
.custom-price-row input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 8px 10px;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.15s;
}
.custom-price-row input:focus { outline: none; border-color: var(--gold); }
.custom-price-row input.active { border-color: var(--gold); }
.custom-price-row button {
  padding: 8px 12px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1.5px solid;
  transition: all 0.15s;
}
#cpApply { border-color: var(--gold-dim); background: rgba(245,200,66,0.08); color: var(--gold); }
#cpApply:hover { background: rgba(245,200,66,0.18); }
#cpReset { border-color: var(--border); background: var(--bg-3); color: var(--text-3); }
#cpReset:hover { border-color: var(--accent); color: var(--accent); }
.custom-price-hint { font-size: 0.72rem; color: var(--text-3); }

/* ═══════════════════════════════════
   CONTROLS ROW
═══════════════════════════════════ */
.controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  margin-top: 14px;
}
.precision-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}
.precision-label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.precision-input {
  width: 52px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 8px;
  text-align: center;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  -moz-appearance: textfield;
}
.precision-input::-webkit-outer-spin-button,
.precision-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.precision-input:focus { outline: none; border-color: var(--accent); }

.add-btn {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 7px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-3);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.15s;
  display: flex; align-items: center; gap: 5px;
}
.add-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ═══════════════════════════════════
   QUICK REFERENCE TABLE
═══════════════════════════════════ */
.ref-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 12px;
}
.ref-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}
.ref-title {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-2);
  display: flex; align-items: center; gap: 8px;
}
.ref-chevron { font-size: 0.8rem; color: var(--text-3); transition: transform 0.2s; }
.ref-card.open .ref-chevron { transform: rotate(180deg); }
.ref-body { display: none; padding: 12px 16px 16px; }
.ref-card.open .ref-body { display: block; }

.ref-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.ref-table th {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}
.ref-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
  vertical-align: top;
}
.ref-table td:first-child { color: var(--text); font-weight: 500; font-family: var(--font-mono); }
.ref-table td em { color: var(--accent-2); font-style: normal; }
.ref-table tr:last-child td { border-bottom: none; }
.ref-table tr:hover td { background: var(--bg-3); }

/* ═══════════════════════════════════
   MODAL
═══════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
}
.modal-overlay.open { display: flex; }
.modal-sheet {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  width: 100%;
  max-width: 520px;
  padding: 24px 20px 32px;
  animation: slideUp 0.25s ease;
}
@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.modal-handle {
  width: 40px; height: 4px;
  background: var(--border-2);
  border-radius: 2px;
  margin: 0 auto 20px;
}
.modal-title {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--text);
}
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 5px;
}
.field input, .field select, .field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 10px 12px;
  background: var(--bg-3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.15s;
  resize: vertical;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { min-height: 60px; }
.modal-btns { display: flex; gap: 8px; }
.modal-btns button {
  flex: 1;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 11px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}
#cancelModal { border: 1.5px solid var(--border); background: var(--bg-3); color: var(--text-2); }
#cancelModal:hover { border-color: var(--text-3); }
#confirmModal { border: none; background: var(--accent); color: white; }
#confirmModal:hover { background: var(--accent-2); }

/* ═══════════════════════════════════
   ABOUT MODAL
═══════════════════════════════════ */
.about-sheet {
  max-height: 90dvh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.about-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.about-app-icon {
  font-size: 2.2rem;
  line-height: 1;
}

.about-app-name {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.about-app-ver {
  font-size: 0.72rem;
  color: var(--text-3);
  margin-top: 2px;
}

.about-section {
  margin-bottom: 20px;
}

.about-section-title {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
  margin-bottom: 10px;
}

.about-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.about-list li {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.55;
  padding-left: 14px;
  position: relative;
}

.about-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.about-list strong {
  color: var(--text);
  font-weight: 600;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.about-tag {
  font-size: 0.74rem;
  padding: 4px 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-2);
}

.about-homepage {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 24px 0 16px;
  padding: 12px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 40px;
  text-decoration: none;
  color: var(--text-2);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  transition: border-color 0.2s, color 0.2s;
}

.about-homepage:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.about-homepage-arrow {
  font-size: 0.9rem;
  opacity: 0.6;
}

.about-close-btn {
  width: 100%;
  padding: 12px;
  border: 1.5px solid var(--border);
  background: var(--bg-3);
  color: var(--text-2);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.about-close-btn:hover {
  border-color: var(--text-3);
  color: var(--text);
}

/* ═══════════════════════════════════
   FOOTER
═══════════════════════════════════ */
/* ── Copyright Footer ──────────────────────────────────── */
.footer {
  text-align: center;
  padding: 24px 16px 16px;
  margin-top: 32px;
}

.footer-inner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 40px;
  backdrop-filter: blur(8px);
}

.footer-icon {
  font-size: 1rem;
  animation: footer-bob 3s ease-in-out infinite;
}

.footer-icon:last-child {
  animation-delay: 0.4s;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: 0.03em;
  font-family: var(--font-mono);
  background: linear-gradient(90deg, var(--accent), var(--gold), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: shimmer 4s linear infinite;
}

@keyframes footer-bob {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50%       { transform: translateY(-2px) rotate(5deg); }
}

/* ── FLOATING KOPI BUTTON ──────────────────────────────── */
.kopi-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 42px;
  height: 42px;
  background: #be1e2d;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  text-decoration: none;
  cursor: pointer;
  animation: kopi-float 3.5s ease-in-out infinite;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.2s ease;
  opacity: 0.82;
}
.kopi-float:hover {
  transform: scale(1.12);
  animation: none;
  opacity: 1;
}
.kopi-float:hover .kopi-ring {
  animation: none;
  opacity: 0;
}
.kopi-float img {
  width: 22px;
  height: 22px;
  object-fit: contain;
  display: block;
  pointer-events: none;
  animation: kopi-wobble 4s ease-in-out infinite;
  transform-origin: center bottom;
}
.kopi-float:hover img {
  animation: none;
  transform: rotate(0deg);
}
.kopi-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid rgba(190, 30, 45, 0.5);
  animation: kopi-ripple 2.4s ease-out infinite;
  transition: opacity 0.3s ease;
}
.kopi-r2 { animation-delay: 1.2s; }

@keyframes kopi-ripple {
  0%   { transform: scale(1);   opacity: 0.7; }
  100% { transform: scale(2.1); opacity: 0; }
}
@keyframes kopi-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}
@keyframes kopi-wobble {
  0%, 55%  { transform: rotate(0deg); }
  58%      { transform: rotate(-18deg); }
  61%      { transform: rotate(16deg); }
  64%      { transform: rotate(-12deg); }
  67%      { transform: rotate(10deg); }
  70%      { transform: rotate(-6deg); }
  73%      { transform: rotate(4deg); }
  76%, 100%{ transform: rotate(0deg); }
}

/* Mobile: lebih kecil, opacity rendah agar tidak ganggu */
@media (max-width: 720px) {
  .kopi-float {
    bottom: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    opacity: 0.65;
  }
  .kopi-float img { width: 18px; height: 18px; }
  .kopi-float:active { opacity: 1; transform: scale(1.08); }
}

/* ═══════════════════════════════════
   SHAKE ANIMATION
═══════════════════════════════════ */
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}
.shake { animation: shake 0.3s ease; }

/* ═══════════════════════════════════
   RESPONSIVE
═══════════════════════════════════ */
@media (max-width: 420px) {
  .units-row { grid-template-columns: 1fr 36px 1fr; gap: 6px; }
  .swap-btn { width: 36px; height: 36px; font-size: 1rem; }
  .main-input { font-size: 1.2rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}