/* =========================================================
   Zabon — Mobile-first styles
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --bg: #ffffff;
  --surface: #f5f5f7;
  --surface-2: #ffffff;
  --text: #1c1c1e;
  --text-muted: #6b6b70;
  --border: #e0e0e5;
  --accent: #2b6cb0;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  --radius: 14px;
  --toolbar-h: 56px;
  --panel-w: min(320px, 86vw);
  --transition: 220ms ease;
}

/* Night theme */
html[data-theme="night"] {
  --bg: #111214;
  --surface: #1c1d20;
  --surface-2: #232427;
  --text: #f2f2f4;
  --text-muted: #9a9aa0;
  --border: #2e2f33;
  --accent: #6aa9ff;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* Auto theme handled by JS toggling data-theme to day/night */

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

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Noto Sans Myanmar",
    "Myanmar Text",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  transition:
    background var(--transition),
    color var(--transition);
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
a {
  color: inherit;
  text-decoration: none;
}

/* ---------- Toolbar ---------- */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--toolbar-h);
  padding: 0 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.toolbar__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.toolbar__spacer {
  flex: 1;
}

/* Hamburger button */
.toolbar__menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  transition: background var(--transition);
}
.toolbar__menu-btn:hover,
.toolbar__menu-btn:focus-visible {
  background: var(--surface-2);
  outline: none;
}

/* Hamburger icon */
.hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
}
.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

/* Animate to X when open */
.toolbar__menu-btn[aria-expanded="true"] .hamburger span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.toolbar__menu-btn[aria-expanded="true"] .hamburger span:nth-child(2) {
  opacity: 0;
}
.toolbar__menu-btn[aria-expanded="true"] .hamburger span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Side panel ---------- */
.panel {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
}

.panel__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  transition: opacity var(--transition);
}

.panel__content {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--panel-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  box-shadow: var(--shadow);
  transform: translateX(-100%);
  transition: transform var(--transition);
  overflow-y: auto;
  padding-bottom: 24px;
}

/* Open state */
.panel[aria-hidden="false"] {
  pointer-events: auto;
}
.panel[aria-hidden="false"] .panel__backdrop {
  opacity: 1;
}
.panel[aria-hidden="false"] .panel__content {
  transform: translateX(0);
}

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
.panel__header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.panel__close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  font-size: 1.5rem;
  line-height: 1;
}
.panel__close:hover {
  background: var(--surface-2);
}

.panel__section {
  padding: 12px 16px;
}
.panel__section-title {
  margin: 8px 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* Rows and options */
.panel__row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: background var(--transition);
}
.panel__row:hover {
  background: var(--bg);
}

.panel__row-icon {
  font-size: 1.1rem;
}
.panel__row-label {
  flex: 1;
  text-align: left;
}
.panel__row-value {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.chevron {
  color: var(--text-muted);
  transition: transform var(--transition);
}
.panel__row[aria-expanded="true"] .chevron {
  transform: rotate(90deg);
}

/* Language list */
.lang-list {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lang-option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  text-align: left;
  transition: background var(--transition);
}
.lang-option:hover {
  background: var(--surface-2);
}
.lang-option[aria-current="true"] {
  background: var(--surface-2);
  color: var(--accent);
  font-weight: 600;
}
.flag {
  font-size: 1.1rem;
}

/* Theme group */
.theme-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.theme-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 6px;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  transition:
    background var(--transition),
    border-color var(--transition);
}
.theme-option[aria-checked="true"] {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Main content ---------- */
.content {
  padding: 16px;
  max-width: 900px;
  margin: 0 auto;
}

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

.app-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition:
    transform var(--transition),
    background var(--transition);
}
.app-card:hover {
  transform: translateY(-2px);
  background: var(--surface-2);
}

.app-card__icon {
  font-size: 1.6rem;
}
.app-card__name {
  font-weight: 600;
}
.app-card__desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- RTL support ---------- */
html[dir="rtl"] .panel__content {
  left: auto;
  right: 0;
  border-right: 0;
  border-left: 1px solid var(--border);
  transform: translateX(100%);
}
html[dir="rtl"] .panel[aria-hidden="false"] .panel__content {
  transform: translateX(0);
}
html[dir="rtl"] .chevron {
  transform: rotate(180deg);
}
html[dir="rtl"] .panel__row[aria-expanded="true"] .chevron {
  transform: rotate(90deg);
}

/* ---------- Larger screens ---------- */
@media (min-width: 600px) {
  .app-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .app-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .content {
    padding: 24px;
  }
}