@import "/assets/css/base.css";
@import "/assets/css/components.css";
@import "/assets/css/pages.css";

/* ============================================================
   CalcKit — App-Specific Styles
   Uses only root design tokens from base.css.
   No color, spacing, typography, shadow, or border-radius
   tokens are redefined here.
   ============================================================ */

/* --- Header --- */
/* CalcKit uses the shared glass-header layout (same as the blog app):
   sticky blurred bar, app-title, doc buttons beside the title, and the
   theme toggle pushed to the right edge of the header-inner row. */
.header-inner .theme-toggle {
  margin-left: auto;
}

/* --- Tab Bar --- */
.calc-tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  border-bottom: var(--border-width) solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.calc-tabs::-webkit-scrollbar {
  display: none;
}

.calc-tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--color-text-secondary);
  font: inherit;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.calc-tab:hover {
  color: var(--color-text);
}

.calc-tab[aria-selected="true"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.calc-tab:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

/* --- Panel Visibility --- */
.calc-panel[hidden] {
  display: none;
}

.calc-panel {
  max-width: 400px;
  margin: 0 auto;
}

/* --- Calculator Display --- */
.calc-display-wrap {
  max-width: 320px;
  margin: 0 auto var(--space-md);
}

.calc-expression {
  display: block;
  width: 100%;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-bottom: none;
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: right;
  overflow-x: auto;
  white-space: nowrap;
  min-height: 1.6em;
  line-height: 1.4;
  box-sizing: border-box;
}

.calc-display {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md) var(--space-md);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  text-align: right;
  overflow-x: auto;
  white-space: nowrap;
  min-height: 1.8em;
  line-height: 1.2;
  box-sizing: border-box;
}

/* --- Memory Row --- */
.calc-mem-row {
  display: flex;
  gap: var(--space-xs);
  max-width: 320px;
  margin: 0 auto var(--space-xs);
}

.calc-mem-row .calc-btn--mem,
.calc-sci-row .calc-btn--mem {
  flex: 1;
  padding: var(--space-xs);
  font-size: 10px;
  min-height: 32px;
  min-width: auto;
}

/* --- Scientific Row & Grid --- */
.calc-sci-row {
  display: flex;
  gap: var(--space-xs);
  max-width: 320px;
  margin: 0 auto var(--space-xs);
}

.calc-sci-row .calc-btn[aria-pressed="true"] {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.calc-sci-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xs);
  max-width: 320px;
  margin: 0 auto var(--space-xs);
}

#calc-sci-grid[hidden] {
  display: none;
}

.calc-sci-grid .calc-btn--fn {
  font-size: var(--text-xs);
  padding: var(--space-sm);
}

/* --- Calculator Button Grid --- */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xs);
  max-width: 320px;
  margin: 0 auto;
}

.calc-btn {
  padding: var(--space-md);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: var(--text-lg);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  min-height: 48px;
  min-width: 48px;
  user-select: none;
}

.calc-btn:hover {
  background: var(--color-border);
}

.calc-btn:active {
  background: var(--color-text-secondary);
  color: var(--color-bg);
}

.calc-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.calc-btn--op {
  color: var(--color-accent);
}

.calc-btn--eq {
  background: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent);
}

.calc-btn--eq:hover {
  background: var(--color-accent-hover);
}

.calc-btn--mem {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.calc-btn--fn {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.calc-btn--fn:hover {
  background: var(--color-border);
}

.calc-btn--fn:active {
  background: var(--color-text-secondary);
  color: var(--color-bg);
}

/* --- Converter Inputs --- */
.conv-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  margin-bottom: var(--space-sm);
}

.conv-select,
.conv-input {
  padding: var(--space-sm);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: var(--text-base);
}

.conv-select {
  flex: 0 0 auto;
  min-width: 0;
  max-width: 100%;
  cursor: pointer;
}

.conv-input {
  flex: 1;
  min-width: 0;
}

.conv-input:focus,
.conv-select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.conv-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
  display: block;
}

.conv-swap {
  display: flex;
  justify-content: center;
  margin: var(--space-xs) 0;
}

.conv-swap-btn {
  background: none;
  border: var(--border-width) solid var(--color-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.conv-swap-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.conv-swap-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.conv-refresh-btn {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.conv-refresh-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.conv-refresh-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Health Inputs --- */
.health-field {
  margin-bottom: var(--space-md);
}

.health-field label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.health-field input,
.health-field select {
  width: 100%;
  padding: var(--space-sm);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: var(--text-base);
  box-sizing: border-box;
}

.health-field input:focus,
.health-field select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.health-type-select {
  width: 100%;
  padding: var(--space-sm);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: var(--text-base);
  margin-bottom: var(--space-lg);
  cursor: pointer;
  box-sizing: border-box;
}

.health-type-select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.tool-input[type="text"] {
  font-family: var(--font-mono);
}

/* --- Result Area --- */
.calc-result {
  position: relative;
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  text-align: center;
}

.result-copy {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: color 0.2s ease;
}

.result-copy:hover {
  color: var(--color-accent);
}

.result-copy:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.result-value {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  word-break: break-all;
}

.result-formula {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-sm);
  word-break: break-all;
}

.result-source {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  font-style: italic;
}

.result-interpretation {
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-top: var(--space-sm);
  font-weight: 600;
}

/* --- History --- */
.calc-history {
  margin-top: var(--space-lg);
}

.calc-history h3 {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.history-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.history-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  border-bottom: var(--border-width) solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  gap: var(--space-sm);
}

.history-item:last-child {
  border-bottom: none;
}

.history-item__expr {
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item__result {
  color: var(--color-text);
  font-weight: 600;
  flex-shrink: 0;
}

/* --- BMI Range Bar --- */
.bmi-bar {
  margin-top: var(--space-sm);
  height: 8px;
  border-radius: var(--border-radius-sm);
  background: linear-gradient(
    to right,
    var(--color-accent) 0%,      /* underweight */
    var(--color-accent) 18.5%,   /* underweight → normal */
    var(--color-success) 18.5%,   /* normal */
    var(--color-success) 25%,     /* normal → overweight */
    var(--color-warning) 25%,     /* overweight */
    var(--color-warning) 30%,     /* overweight → obese */
    var(--color-error) 30%      /* obese */
  );
  position: relative;
  overflow: visible;
}

.bmi-bar__marker {
  position: absolute;
  top: -4px;
  width: 16px;
  height: 16px;
  background: var(--color-text);
  border: 2px solid var(--color-bg);
  border-radius: 50%;
  transform: translateX(-50%);
  transition: left 0.3s ease;
  z-index: 1;
}

.bmi-labels {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

#bmi-visual[hidden] {
  display: none;
}

#bmi-visual {
  margin-top: var(--space-lg);
}

/* --- Tools Sub-navigation --- */
.tools-subnav {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  border-bottom: var(--border-width) solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tools-subnav::-webkit-scrollbar {
  display: none;
}

.tools-tab {
  flex: 0 0 auto;
  padding: var(--space-sm) var(--space-sm);
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--color-text-secondary);
  font: inherit;
  font-size: var(--text-xs);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}

.tools-tab:hover {
  color: var(--color-text);
}

.tools-tab[aria-selected="true"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.tools-tab:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

/* --- Dark Mode Overrides --- */
[data-theme="dark"] .calc-btn--eq {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

[data-theme="dark"] .calc-btn--eq:hover {
  background: var(--color-accent-hover);
}

[data-theme="dark"] .bmi-bar__marker {
  border-color: var(--color-bg);
}

/* --- Responsive --- */
@media (max-width: 480px) {
  .calc-grid {
    max-width: 100%;
  }

  .calc-btn {
    padding: var(--space-sm);
    font-size: var(--text-base);
    min-height: 44px;
  }

  .calc-btn--fn {
    font-size: var(--text-xs);
  }

  .conv-row {
    flex-direction: column;
    align-items: stretch;
  }

  .conv-select {
    max-width: 100%;
  }

  .calc-panel {
    max-width: 100%;
  }

  .calc-display-wrap {
    max-width: 100%;
  }

  .calc-expression {
    max-width: 100%;
  }

  .calc-display {
    max-width: 100%;
  }

  .calc-mem-row,
  .calc-sci-row,
  .calc-sci-grid {
    max-width: 100%;
  }

  .calc-tab {
    flex: 0 0 auto;
    padding: var(--space-sm) var(--space-sm);
    font-size: var(--text-xs);
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  .calc-tab,
  .calc-btn,
  .tools-tab,
  .bmi-bar__marker {
    transition: none;
  }
}