/* ============================
   DESIGN TOKENS
   ============================ */
:root {
  --clr-bg: #0a0c14;
  --clr-surface: #111420;
  --clr-surface2: #181d2e;
  --clr-border: rgba(255,255,255,0.07);
  --clr-border-active: rgba(101, 145, 255, 0.45);

  --clr-primary: #6591ff;
  --clr-primary-dark: #3d68f0;
  --clr-accent: #a78bfa;
  --clr-success: #34d399;
  --clr-warning: #fbbf24;

  --clr-text: #e8eaf6;
  --clr-text-muted: #7880a0;
  --clr-text-dim: #4a5070;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(101, 145, 255, 0.15);

  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   RESET & BASE
   ============================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100dvh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(101, 145, 255, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(167, 139, 250, 0.08) 0%, transparent 60%);
}

/* ============================
   INFO BAR
   ============================ */
.info-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: rgba(10, 12, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.info-bar__label {
  color: var(--clr-text-muted);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.info-bar__rate {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--clr-text);
}

.info-bar__rate strong {
  color: var(--clr-success);
  font-weight: 700;
}

.currency-icon {
  opacity: 0.6;
  font-style: normal;
}

.info-bar__divider {
  color: var(--clr-text-dim);
  margin: 0 2px;
}

.settings-btn {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px 6px;
  border-radius: 8px;
  transition: background var(--transition);
}

.settings-btn:hover, .settings-btn:active {
  background: rgba(255,255,255,0.08);
}

/* ============================
   MAIN APP
   ============================ */
.app {
  max-width: 480px;
  margin: 0 auto;
  padding: 20px 16px 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header */
.app__header {
  padding: 8px 0 4px;
}

.app__logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  font-size: 2.4rem;
  filter: drop-shadow(0 0 12px rgba(101, 145, 255, 0.6));
  animation: float 3.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.app__title {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app__subtitle {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  margin-top: 2px;
  font-weight: 400;
}

/* ============================
   CURRENCY SWITCHER
   ============================ */
.currency-switcher {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 6px;
  box-shadow: var(--shadow-card);
}

.currency-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 14px 8px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--clr-text-muted);
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.currency-btn .btn-icon {
  font-size: 1.3rem;
  font-style: normal;
  line-height: 1;
  transition: all var(--transition);
}

.currency-btn:hover {
  color: var(--clr-text);
  background: rgba(255,255,255,0.04);
}

.currency-btn.active {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  color: #fff;
  box-shadow: 0 4px 20px rgba(101, 145, 255, 0.4), inset 0 1px 0 rgba(255,255,255,0.15);
}

.currency-btn.active .btn-icon {
  filter: drop-shadow(0 0 6px rgba(255,255,255,0.5));
}

/* ============================
   CARDS
   ============================ */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.card:focus-within {
  border-color: var(--clr-border-active);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.card__title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

/* ============================
   INPUT FIELDS
   ============================ */
.input-group {
  margin-bottom: 14px;
}

.input-group:last-child {
  margin-bottom: 0;
}

.inputs-card .input-group--inline-prices {
  margin-bottom: 12px;
}

.inputs-card .input-group--inline-prices:last-child {
  margin-bottom: 0;
}

.input-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  margin-bottom: 7px;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.field-input {
  width: 100%;
  padding: 14px 48px 14px 16px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-family: var(--font);
  font-size: 1.15rem;
  font-weight: 600;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.field-input::placeholder {
  color: var(--clr-text-dim);
  font-weight: 400;
}

.field-input:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(101, 145, 255, 0.15);
}

/* Remove number arrows */
.field-input::-webkit-inner-spin-button,
.field-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.input-unit {
  position: absolute;
  right: 14px;
  color: var(--clr-text-dim);
  font-size: 0.85rem;
  font-weight: 600;
  pointer-events: none;
}

/* ============================
   OPTIONS
   ============================ */
.option-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--clr-border);
}

.option-group:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.option-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text-muted);
}

/* Toggle group (gathering coefficient) */
.toggle-group {
  display: flex;
  gap: 8px;
}

.toggle-group--gathering {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.fabric-mode-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.mode-btn {
  flex: 1;
  padding: 10px 14px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-muted);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.mode-btn:hover {
  border-color: rgba(101,145,255,0.3);
  color: var(--clr-text);
}

.mode-btn.active {
  background: linear-gradient(135deg, rgba(101,145,255,0.2), rgba(167,139,250,0.15));
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

.fabric-mode-panel {
  margin-top: 8px;
}

.fabric-mode-label {
  display: block;
  font-size: 0.78rem;
  color: var(--clr-text-dim);
  margin-bottom: 6px;
}

.fabric-mode-hint {
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  margin-top: 6px;
}

.toggle-btn {
  flex: 1;
  padding: 11px 6px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-muted);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.toggle-btn:hover {
  border-color: rgba(101,145,255,0.3);
  color: var(--clr-text);
}

.toggle-btn.active {
  background: linear-gradient(135deg, rgba(101,145,255,0.2), rgba(167,139,250,0.15));
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  box-shadow: 0 0 16px rgba(101, 145, 255, 0.2);
}

/* Switch toggle */
.switch-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.switch-btn {
  position: relative;
  width: 50px;
  height: 28px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.switch-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--clr-text-dim);
  border-radius: 50%;
  transition: all var(--transition);
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

.switch-btn[data-active="true"] {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  border-color: var(--clr-primary);
  box-shadow: 0 0 16px rgba(101, 145, 255, 0.3);
}

.switch-btn[data-active="true"] .switch-knob {
  left: calc(100% - 23px);
  background: #fff;
  box-shadow: 0 2px 8px rgba(101, 145, 255, 0.5);
}

.switch-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text);
  transition: color var(--transition);
}

.switch-hint {
  color: var(--clr-text-muted);
  font-size: 0.78rem;
  font-weight: 400;
}

/* Decor: add row + list */
.decor-add-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.decor-select {
  flex: 1;
  min-width: 0;
  padding: 12px 12px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.decor-select:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(101, 145, 255, 0.15);
}

.add-decor-btn {
  flex-shrink: 0;
  padding: 12px 14px;
  background: linear-gradient(135deg, rgba(101,145,255,0.25), rgba(167,139,250,0.2));
  border: 1.5px solid var(--clr-primary);
  border-radius: var(--radius-md);
  color: var(--clr-primary);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}

.add-decor-btn:hover {
  background: linear-gradient(135deg, rgba(101,145,255,0.35), rgba(167,139,250,0.28));
  color: #fff;
}

.decor-hint {
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  line-height: 1.35;
  margin-top: 2px;
}

.decor-list {
  list-style: none;
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.decor-list__empty {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
  padding: 8px 10px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--clr-border);
}

.decor-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
}

.decor-list__label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--clr-text);
}

.decor-list__remove {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: rgba(248, 113, 113, 0.12);
  color: #f87171;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--transition);
}

.decor-list__remove:hover {
  background: rgba(248, 113, 113, 0.22);
}

/* ============================
   RESULT CARD
   ============================ */
.result-card {
  background: linear-gradient(135deg, rgba(101,145,255,0.08), rgba(167,139,250,0.06));
  border-color: rgba(101,145,255,0.2);
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -30%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(101,145,255,0.1), transparent 70%);
  pointer-events: none;
}

.result-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 24px 0;
  color: var(--clr-text-dim);
}

.placeholder-icon {
  font-size: 2.5rem;
  opacity: 0.5;
}

.result-placeholder p {
  font-size: 0.9rem;
}

/* Result content */
.result-total {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.result-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-amount {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.result-value {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff, var(--clr-primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  transition: all 0.3s ease;
}

.result-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-primary);
  opacity: 0.8;
}

/* Rate note */
.rate-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 16px;
  font-size: 0.82rem;
  color: var(--clr-warning);
  line-height: 1.4;
}

.rate-note__icon {
  flex-shrink: 0;
  font-size: 1rem;
}

/* Breakdown */
.breakdown-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text-muted);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.breakdown-toggle:hover {
  background: rgba(255,255,255,0.07);
  color: var(--clr-text);
}

.breakdown-arrow {
  font-size: 0.7rem;
  transition: transform var(--transition);
}

.breakdown-arrow.open {
  transform: rotate(180deg);
}

.breakdown {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.breakdown-report {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.breakdown-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 14px;
}

.breakdown-section {
  margin-bottom: 14px;
}

.breakdown-section:last-child {
  margin-bottom: 0;
}

.breakdown-section__title {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.breakdown-costs {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.breakdown-meta {
  padding: 12px;
  background: rgba(101, 145, 255, 0.06);
  border: 1px solid rgba(101, 145, 255, 0.15);
  border-radius: var(--radius-sm);
}

.breakdown-meta__list {
  list-style: none;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.breakdown-meta__list strong {
  color: var(--clr-text);
  font-weight: 600;
}

.breakdown-meta__line strong {
  color: var(--clr-text);
  font-weight: 600;
}

.breakdown-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.breakdown-action-btn {
  flex: 1;
  min-width: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-muted);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.breakdown-action-btn:hover:not(:disabled) {
  background: rgba(101, 145, 255, 0.12);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

.breakdown-action-btn:disabled {
  opacity: 0.7;
  cursor: default;
}

.breakdown-action__icon {
  font-size: 1rem;
}

.breakdown-name--stack {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.breakdown-sub {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--clr-text-dim);
}

.breakdown-row--subtotal {
  padding-top: 2px;
  margin-top: 2px;
  border-top: 1px dashed var(--clr-border);
}

.breakdown-row--subtotal .breakdown-name {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

.breakdown-row--muted .breakdown-amount {
  color: var(--clr-text-dim);
}

.breakdown-row--muted .breakdown-name {
  color: var(--clr-text-dim);
}

.breakdown-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 4px;
}

.breakdown-icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.breakdown-name {
  flex: 1;
  font-size: 0.88rem;
  color: var(--clr-text-muted);
}

.breakdown-amount {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--clr-text);
  font-variant-numeric: tabular-nums;
}

.breakdown-divider {
  height: 1px;
  background: var(--clr-border);
  margin: 4px 0;
}

.breakdown-row--total .breakdown-name {
  color: var(--clr-text);
  font-weight: 600;
}

.breakdown-row--total .breakdown-amount {
  color: var(--clr-success);
  font-size: 1rem;
}

/* ============================
   FOOTER NOTE
   ============================ */
.footer-note {
  text-align: center;
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  padding-top: 8px;
}

/* ============================
   SETTINGS PANEL
   ============================ */
.settings-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.settings-panel {
  width: 100%;
  max-width: 480px;
  max-height: 92dvh;
  overflow-y: auto;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-active);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 24px 20px 40px;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.6);
  animation: slideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.settings-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.close-btn {
  background: rgba(255,255,255,0.08);
  border: none;
  color: var(--clr-text-muted);
  font-size: 1rem;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.close-btn:hover {
  background: rgba(255,255,255,0.14);
  color: var(--clr-text);
}

.settings-section {
  margin-bottom: 24px;
}

.section-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.settings-note {
  font-size: 0.78rem;
  color: var(--clr-text-dim);
  line-height: 1.4;
  margin: -6px 0 14px;
}

.settings-input-group {
  margin-bottom: 12px;
}

.settings-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  margin-bottom: 6px;
}

.settings-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.settings-input-wrapper:focus-within {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(101, 145, 255, 0.15);
}

.settings-prefix, .settings-suffix {
  padding: 12px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  background: rgba(255,255,255,0.03);
  flex-shrink: 0;
}

.settings-input {
  flex: 1;
  padding: 12px 8px;
  background: transparent;
  border: none;
  color: var(--clr-text);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  min-width: 0;
}

.settings-input::-webkit-inner-spin-button,
.settings-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.margin-info {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.82rem;
  color: var(--clr-success);
  margin-top: 6px;
}

.margin-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

/* Save button */
.save-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  border: none;
  border-radius: var(--radius-lg);
  color: #fff;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(101, 145, 255, 0.4);
}

.save-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(101, 145, 255, 0.5);
}

.save-btn:active {
  transform: translateY(0);
}

.save-success {
  margin-top: 12px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--clr-success);
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--transition);
}

.save-success.visible {
  opacity: 1;
}

/* ============================
   SAVE TO HISTORY & HISTORY LIST
   ============================ */
.save-to-history {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--clr-border);
}

.save-to-history__title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  margin-bottom: 12px;
}

.save-to-history__row {
  margin-bottom: 10px;
}

.save-to-history__label {
  display: block;
  font-size: 0.78rem;
  color: var(--clr-text-dim);
  margin-bottom: 4px;
}

.save-to-history__input {
  padding: 10px 12px;
  font-size: 0.95rem;
}

.save-to-history__input[type="number"] {
  max-width: 100px;
}

.save-to-history__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 16px;
  margin-top: 12px;
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.2), rgba(52, 211, 153, 0.12));
  border: 1.5px solid var(--clr-success);
  border-radius: var(--radius-md);
  color: var(--clr-success);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.save-to-history__btn:hover {
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.3), rgba(52, 211, 153, 0.2));
}

.save-to-history__hint {
  font-size: 0.7rem;
  color: var(--clr-text-dim);
  margin-top: 8px;
}

.history-card {
  margin-top: 8px;
}

.history-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text-muted);
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.history-toggle:hover {
  background: rgba(255,255,255,0.07);
  color: var(--clr-text);
}

.history-toggle__arrow {
  font-size: 0.7rem;
  transition: transform var(--transition);
}

.history-toggle__arrow.open {
  transform: rotate(180deg);
}

.history-list {
  margin-top: 10px;
}

.history-empty {
  padding: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--clr-text-dim);
}

.history-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}

.history-item__main {
  flex: 1;
  min-width: 0;
}

.history-item__num {
  font-weight: 700;
  color: var(--clr-primary);
  font-size: 0.95rem;
}

.history-item__comment {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item__meta {
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  margin-top: 4px;
}

.history-item__total {
  font-weight: 700;
  font-size: 1rem;
  color: var(--clr-success);
  flex-shrink: 0;
}

.history-item__actions {
  display: flex;
  gap: 6px;
}

.history-item__btn {
  padding: 8px 10px;
  border: none;
  border-radius: 8px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background var(--transition);
}

.history-item__btn--load {
  background: rgba(101, 145, 255, 0.2);
  color: var(--clr-primary);
}

.history-item__btn--load:hover {
  background: rgba(101, 145, 255, 0.35);
}

.history-item__btn--del {
  background: rgba(248, 113, 113, 0.15);
  color: #f87171;
}

.history-item__btn--del:hover {
  background: rgba(248, 113, 113, 0.25);
}

/* ============================
   ANIMATIONS & MICRO-INTERACTIONS
   ============================ */
@keyframes popIn {
  0% { transform: scale(0.95); opacity: 0.7; }
  60% { transform: scale(1.02); }
  100% { transform: scale(1); opacity: 1; }
}

.result-value.updated {
  animation: popIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--clr-border);
  border-radius: 99px;
}

/* ============================
   RESPONSIVE TWEAKS
   ============================ */
@media (min-width: 480px) {
  .settings-panel {
    border-radius: var(--radius-xl);
    margin-bottom: 20px;
  }
  .settings-overlay {
    align-items: center;
    padding: 20px;
  }
}