:root {
  --font-family: "Vazirmatn", Tahoma, sans-serif;

  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-primary: #0d9488;
  --color-primary-hover: #0f766e;
  --color-on-primary: #ffffff;
  --color-accent: #f59e0b;
  --color-holiday: #dc2626;
  --color-success: #16a34a;
  --color-shadow: rgba(15, 23, 42, 0.08);
  --accent: #f59e0b;
  --accent2: #ebae49;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --duration-fast: 150ms;
  --duration-base: 250ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1a2436;
  --color-surface-alt: #16202f;
  --color-text: #e6edf5;
  --color-text-muted: #94a3b8;
  --color-border: #2a3648;
  --color-primary: #2dd4bf;
  --color-primary-hover: #5eead4;
  --color-on-primary: #052e2b;
  --color-accent: #fbbf24;
  --color-holiday: #f87171;
  --color-success: #4ade80;
  --color-shadow: rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}
html {
  direction: rtl;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  font-size: 16px;
  line-height: 1.6;
  transition:
    background var(--duration-base) var(--ease-out),
    color var(--duration-base) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}

.app-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-4) calc(var(--space-7) + 64px);
  min-height: 100dvh;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0 var(--space-4);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 20;
}

.app-header__title {
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    transform var(--duration-fast) var(--ease-out),
    background var(--duration-base);
}
.theme-toggle:active {
  transform: scale(0.92);
}
.theme-toggle svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text);
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-2)
    max(var(--space-2), env(safe-area-inset-bottom));
  z-index: 30;
  box-shadow: 0 -4px 16px var(--color-shadow);
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-2) var(--space-1);
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  font-size: 11px;
  min-height: 44px;
  transition: color var(--duration-fast) var(--ease-out);
}
.bottom-nav__item svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
}
.bottom-nav__item[aria-current="true"] {
  color: var(--color-primary);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  box-shadow: 0 2px 10px var(--color-shadow);
}

.card__title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}
.calendar-nav__label {
  font-size: 17px;
  font-weight: 700;
  text-align: center;
  flex: 1;
}

.today-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  min-height: 40px;
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  transition:
    background var(--duration-fast) var(--ease-out),
    transform var(--duration-fast);
}
.today-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}
.today-btn:active {
  transform: scale(0.97);
}
.today-btn[disabled] {
  opacity: 0.5;
  pointer-events: none;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast);
}
.icon-btn:active {
  transform: scale(0.94);
}
.icon-btn svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-text);
}

.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  aspect-ratio: 1;
  min-height: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  position: relative;
  background: transparent;
  border: none;
  color: var(--color-text);
  transition:
    background var(--duration-fast) var(--ease-out),
    transform var(--duration-fast);
}
.day-cell:active {
  transform: scale(0.92);
}
.day-cell--empty {
  visibility: hidden;
}
.day-cell--today {
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: 700;
}
.day-cell--holiday:not(.day-cell--today) {
  color: var(--color-holiday);
  font-weight: 600;
}
.day-cell--selected:not(.day-cell--today) {
  background: var(--color-surface-alt);
  box-shadow: inset 0 0 0 2px var(--color-primary);
}

.sub-date-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  margin-top: var(--space-1);
  flex-wrap: wrap;
  gap: var(--space-2);
  transition: opacity var(--duration-fast) var(--ease-out);
}
.sub-date-row span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.event-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.event-item:last-child {
  border-bottom: none;
}
.event-item__badge {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  background: var(--color-primary);
}
.event-item--holiday .event-item__badge {
  background: var(--color-holiday);
}
.event-item__text {
  font-size: 14px;
  line-height: 1.7;
}
.event-item__tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  margin-inline-start: var(--space-2);
}

.empty-state {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  color: var(--color-text-muted);
  font-size: 13px;
}

.field-group {
  margin-bottom: var(--space-4);
}
.field-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}
.field-row {
  display: flex;
  gap: var(--space-2);
}
.field-input,
.field-select {
  width: 100%;
  min-height: 48px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  color: var(--color-text);
  font-size: 16px;
  font-family: inherit;
}
.field-input:focus,
.field-select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.btn-primary {
  width: 100%;
  min-height: 48px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 15px;
  font-weight: 700;
  transition:
    background var(--duration-fast),
    transform var(--duration-fast);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}
.btn-primary:active {
  transform: scale(0.98);
}

.tabs-row {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  overflow-x: auto;
  padding-bottom: 2px;
}
.tab-chip {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  min-height: 40px;
  transition:
    background var(--duration-fast),
    color var(--duration-fast);
}
.tab-chip[aria-selected="true"] {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.result-box {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-3);
  font-size: 14px;
  line-height: 1.8;
}
.result-box__highlight {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-3);
}
.stat-box {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  text-align: center;
}
.stat-box__value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}
.stat-box__label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.prayer-times-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.prayer-time-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
.prayer-time-item__name {
  font-size: 13px;
  color: var(--color-text-muted);
}
.prayer-time-item__value {
  font-size: 16px;
  font-weight: 700;
}

.page {
  display: none;
  animation: fadeIn var(--duration-base) var(--ease-out);
}
.page.is-active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

@media (min-width: 640px) {
  .app-shell {
    padding: var(--space-5) var(--space-5) var(--space-7);
  }
  .day-cell {
    font-size: 15px;
  }
}

@media (min-width: 1024px) {
  .app-shell {
    max-width: 840px;
  }
  .bottom-nav {
    max-width: 840px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }
}

.toast {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 13px;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}
.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

.day-detail {
  margin-bottom: 10px;
}

.month-events-card {
  margin-bottom: 70px;
}

.install-prompt {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: white;
  padding: 14px 20px;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(124, 92, 255, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1000;
  animation: slideUp 0.3s ease;
  max-width: calc(100% - 30px);
}

@keyframes slideUp {
  from {
    transform: translateX(-50%) translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

.install-prompt-text {
  flex: 1;
  min-width: 0;
}

.install-prompt-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 2px;
}

.install-prompt-desc {
  font-size: 13px;
  opacity: 0.9;
}

.install-btn {
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 8px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-family: Vazirmatn, sans-serif;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.install-btn:hover {
  background: rgba(255, 255, 255, 0.35);
  transform: scale(1.05);
}

.close-install {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 20px;
  padding: 4px;
  line-height: 1;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.close-install:hover {
  opacity: 1;
}

/* Update Notification Styles */
.hidden {
    display: none !important;
}

.update-notification {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(150%);
  z-index: 1000;
  width: min(500px, calc(100% - 32px));
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.update-notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.update-notification.hidden {
  display: block;
}

.update-content {
  background: linear-gradient(135deg, var(--accent) 0%, #9b7fff 100%);
  backdrop-filter: blur(20px);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow:
    0 12px 40px rgba(124, 92, 255, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  color: white;
}

.update-icon {
  font-size: 32px;
  flex-shrink: 0;
  animation: rotate 2s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.update-text {
  flex: 1;
}

.update-text strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.update-text p {
  margin: 0;
  font-size: 14px;
  opacity: 0.95;
  line-height: 1.4;
}

.update-button {
  background: white;
  color: var(--accent);
  border: none;
  padding: 10px 20px;
  border-radius: 12px;
  font-family: "Vazirmatn", sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.update-button:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
}

.update-button:active {
  transform: scale(0.98);
}

.dismiss-button {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  color: white;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0;
  line-height: 1;
}

.dismiss-button:hover {
  background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 600px) {
  .update-content {
    flex-direction: column;
    text-align: center;
    padding: 24px 20px;
  }

  .update-icon {
    font-size: 48px;
  }

  .update-button {
    width: 100%;
  }

  .dismiss-button {
    top: 12px;
    right: 12px;
  }
}

.month-events-card { padding: 0; overflow: hidden; }

.month-events-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background: transparent;
  border: none;
  color: var(--color-text);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  min-height: 44px;
}

.month-events-toggle__title { display: flex; align-items: center; gap: var(--space-2); }
.month-events-toggle__title svg { width: 18px; height: 18px; stroke: var(--color-primary); }

.month-events-toggle__chevron {
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}
.month-events-toggle[aria-expanded="true"] .month-events-toggle__chevron {
  transform: rotate(180deg);
}

.month-events-body {
  padding: 0 var(--space-4) var(--space-4);
}

.month-events-day {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-border);
}
.month-events-day:first-child { border-top: none; }

.month-events-day__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.month-events-day__label .day-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--color-surface-alt);
  font-size: 12px;
}
.month-events-day--holiday .month-events-day__label { color: var(--color-holiday); }

.month-events-day .event-item { padding: var(--space-2) 0; }