/* ============================================
   DESIGN SYSTEM - COLOR TOKENS
   ============================================ */
:root {
  /* Light Mode Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #dbeafe;
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  --color-warning: #d97706;
  --color-warning-bg: #fed7aa;
  --color-error: #dc2626;
  --color-error-bg: #fee2e2;
  
  /* Dark Mode Colors */
  --color-dark-bg: #111827;
  --color-dark-surface: #1f2937;
  --color-dark-surface-alt: #111827;
  --color-dark-border: #374151;
  --color-dark-text: #f3f4f6;
  --color-dark-text-muted: #9ca3af;
  
  /* Light Mode Extended */
  --color-light-bg: #f3f4f6;
  --color-light-surface: #ffffff;
  --color-light-border: #e5e7eb;
  
  /* Focus & Accessibility */
  --focus-outline: 0 0 0 3px rgba(37, 99, 235, 0.1), 0 0 0 2px #2563eb;
  --focus-outline-dark: 0 0 0 3px rgba(147, 197, 253, 0.1), 0 0 0 2px #93c5fd;
}

html {
  height: 100%;
  width: 100%;
  scroll-behavior: smooth;
}

/* PWA viewport optimizations */
body {
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* Allow text selection in content areas */
p, span, div[class*="text"], textarea, input {
  user-select: text;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
}

/* Remove default button outlines for cleaner UI */
button {
  outline: none;
  border: none;
  -webkit-tap-highlight-color: transparent;
}

/* ============================================
   IMPROVED FOCUS STATES - ACCESSIBILITY
   ============================================ */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Dark mode focus states */
.dark button:focus-visible,
.dark input:focus-visible,
.dark select:focus-visible,
.dark textarea:focus-visible,
.dark a:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 2px;
}

/* Tab focus indicator (keyboard nav) */
button:focus {
  outline: none;
  box-shadow: var(--focus-outline);
}

.dark button:focus {
  outline: none;
  box-shadow: var(--focus-outline-dark);
}

/* Modern scrollbar styling */
.scrollbar-hide {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.scrollbar-hide::-webkit-scrollbar {
  display: none;
}

/* Backdrop blur support */
.backdrop-blur-sm {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ============================================
   FORM STYLING & VALIDATION
   ============================================ */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
select,
textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-light-border);
  border-radius: 0.5rem;
  background-color: #ffffff;
  color: #1f2937;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
input[type="time"]:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-outline);
  outline: none;
}

.dark input[type="text"],
.dark input[type="email"],
.dark input[type="password"],
.dark input[type="number"],
.dark input[type="date"],
.dark input[type="datetime-local"],
.dark input[type="time"],
.dark select,
.dark textarea {
  background-color: var(--color-dark-surface);
  color: var(--color-dark-text);
  border-color: var(--color-dark-border);
}

.dark input[type="text"]:focus,
.dark input[type="email"]:focus,
.dark input[type="password"]:focus,
.dark input[type="number"]:focus,
.dark input[type="date"]:focus,
.dark input[type="datetime-local"]:focus,
.dark input[type="time"]:focus,
.dark select:focus,
.dark textarea:focus {
  border-color: #93c5fd;
  box-shadow: var(--focus-outline-dark);
}

input.input-error,
select.input-error,
textarea.input-error {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

input.input-error:focus,
select.input-error:focus,
textarea.input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1), 0 0 0 2px var(--color-error);
}

.dark input.input-error,
.dark select.input-error,
.dark textarea.input-error {
  background-color: rgba(220, 38, 38, 0.1);
  border-color: #f87171;
}

input.input-success,
select.input-success,
textarea.input-success {
  border-color: var(--color-success);
}

.form-error {
  color: var(--color-error);
  font-size: 0.75rem;
  margin-top: 0.375rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.dark .form-error {
  color: #f87171;
}

.form-help {
  color: #6b7280;
  font-size: 0.75rem;
  margin-top: 0.375rem;
  font-weight: 400;
}

.dark .form-help {
  color: #9ca3af;
}

.required::after {
  content: " *";
  color: var(--color-error);
  font-weight: bold;
}

/* ============================================
   SVG ICON STYLING
   ============================================ */
.icon {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.icon-sm {
  width: 1rem;
  height: 1rem;
}

.icon-lg {
  width: 1.5rem;
  height: 1.5rem;
}

button .icon {
  margin-right: 0.375rem;
}

/* Enhanced mobile PWA styles */
@media (max-width: 768px) {
  /* PWA safe areas */
  .safe-area-top {
    padding-top: env(safe-area-inset-top);
  }
  
  .safe-area-bottom {
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .safe-area-left {
    padding-left: env(safe-area-inset-left);
  }
  
  .safe-area-right {
    padding-right: env(safe-area-inset-right);
  }

  /* Touch optimizations */
  .touch-manipulation {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }
  
  /* Improved text rendering */
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "liga", "kern";
  }
  
  /* Better tap targets - minimum 44px */
  button, input, select, textarea, a {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Prevent zoom on form inputs */
  input, select, textarea {
    font-size: 16px;
    border-radius: 8px;
  }
  
  /* Enhanced scrolling */
  .overflow-y-auto {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
  
  .overflow-x-auto {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .overflow-x-auto::-webkit-scrollbar {
    display: none;
  }
  
  /* Modern line clamping */
  .line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  .line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  /* Enhanced mobile drawer */
  #drawer {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  
  /* Mobile-first animations */
  .transition-transform {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .transition-all {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  /* Better mobile spacing */
  .mobile-spacing {
    padding: 1rem;
  }
  
  /* Improved mobile cards */
  .mobile-card {
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  
  /* Enhanced button styles for mobile */
  .mobile-btn {
    border-radius: 12px;
    font-weight: 600;
    letter-spacing: 0.025em;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .mobile-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }
  
  /* Status bar color theming */
  meta[name="theme-color"] {
    content: #1d4ed8;
  }
  
  /* Dark mode status bar */
  @media (prefers-color-scheme: dark) {
    meta[name="theme-color"] {
      content: #1f2937;
    }
  }
  
  /* Improved focus states for accessibility */
  button:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
  }
  
  /* Enhanced mobile navigation */
  #bottom-nav,
  #admin-bottom-nav {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  /* Mobile header improvements */
  header {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
}

/* =====================
   Design System Refresh
   ===================== */

:root {
  --ui-bg: #f4f7fb;
  --ui-bg-dark: #0f172a;
  --ui-surface: #ffffff;
  --ui-surface-2: #f8fbff;
  --ui-text: #0f172a;
  --ui-muted: #64748b;
  --ui-primary: #2563eb;
  --ui-primary-2: #0ea5e9;
  --ui-success: #16a34a;
  --ui-warning: #d97706;
  --ui-danger: #dc2626;
  --ui-border: #e2e8f0;
  --ui-radius: 16px;
  --ui-radius-lg: 22px;
  --ui-shadow-sm: 0 6px 20px rgba(15, 23, 42, 0.06);
  --ui-shadow-md: 0 12px 36px rgba(15, 23, 42, 0.1);
}

body {
  font-family: 'Manrope', system-ui, -apple-system, Segoe UI, sans-serif;
  background:
    radial-gradient(circle at 14% 12%, rgba(14, 165, 233, 0.1), transparent 40%),
    radial-gradient(circle at 86% 8%, rgba(37, 99, 235, 0.1), transparent 34%),
    var(--ui-bg);
}

html.dark body {
  background:
    radial-gradient(circle at 20% 10%, rgba(14, 165, 233, 0.12), transparent 36%),
    radial-gradient(circle at 80% 8%, rgba(37, 99, 235, 0.14), transparent 30%),
    var(--ui-bg-dark);
}

#app header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

#drawer {
  border-right: 1px solid var(--ui-border);
}

#drawer {
  scrollbar-gutter: stable;
}

.sidebar-scroll {
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.55) transparent;
}

.sidebar-scroll::-webkit-scrollbar {
  width: 8px;
}

.sidebar-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-scroll::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.45);
  border-radius: 999px;
}

.sidebar-scroll::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 116, 139, 0.65);
}

#drawer button {
  border-radius: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

#drawer button:hover {
  transform: translateX(2px);
}

#app main {
  padding-top: 20px;
  background: linear-gradient(180deg, rgba(243, 248, 255, 0.95), rgba(237, 244, 253, 0.9));
}

#app .section {
  max-width: 1180px;
  margin: 0 auto;
}

#app .section > h2 {
  font-size: clamp(1.55rem, 1.25rem + 0.9vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #0b172a;
}

html.dark #app main {
  background: linear-gradient(180deg, rgba(9, 18, 36, 0.95), rgba(8, 16, 34, 0.98));
}

html.dark #app .section > h2 {
  color: #e2e8f0;
}

#kpi-row > button,
#dashboard .bg-white,
#dashboard .dark\:bg-gray-800,
#my-calendar .bg-white,
#admin-calendar .bg-white,
#reports .bg-white,
#settings .bg-white,
#users .bg-white,
#holidays .bg-white,
#all-duties .bg-white,
#my-duties .bg-white,
#approvals .bg-white {
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  box-shadow: var(--ui-shadow-sm);
}

.duty-card {
  transition: transform 0.18s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(249, 252, 255, 0.95));
}

html.dark .duty-card {
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.92), rgba(17, 24, 39, 0.96));
}

.duty-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--ui-shadow-md);
  border-color: rgba(37, 99, 235, 0.25);
}

#my-duties select,
#all-duties select,
#reports select,
#settings select,
#settings input,
#settings textarea,
#create-duty input,
#create-duty select,
#create-duty textarea,
#users input,
#holidays input {
  border-radius: 12px;
  border-color: #cbd5e1;
}

#my-duties .duty-tab-btn,
#all-duties .all-tab-btn,
#approvals button[id^="approval-tab"] {
  border-radius: 999px;
}

#bottom-nav,
#admin-bottom-nav {
  box-shadow: 0 -8px 24px rgba(2, 6, 23, 0.12);
}

#bottom-nav > button,
#admin-bottom-nav > button {
  border-radius: 12px;
}

@media (max-width: 1024px) {
  #app main {
    padding-left: 12px;
    padding-right: 12px;
  }

  #drawer {
    width: min(82vw, 312px);
  }
}

@media (min-width: 768px) and (max-height: 860px) {
  #drawer {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  #drawer button {
    padding-top: 10px !important;
    padding-bottom: 10px !important;
  }
}

@media (max-width: 768px) {
  #app header {
    padding-top: calc(10px + env(safe-area-inset-top));
    padding-bottom: 10px;
  }

  #app header .flex.items-center.gap-2.md\:gap-3 {
    gap: 0.25rem;
    min-width: 0;
  }

  #btn-menu,
  #header-android-download-btn,
  #top-quick-add-btn,
  #header-notif-btn,
  #mobile-avatar-btn,
  #mobile-more-btn {
    min-width: 36px;
    min-height: 36px;
    padding: 0.4rem;
  }

  #top-home-link {
    max-width: 130px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  #header-app-version {
    font-size: 10px;
    line-height: 1;
    padding: 3px 6px;
    margin-left: 6px;
    flex-shrink: 0;
  }

  #header-android-download-btn {
    display: none !important;
  }

  @media (min-width: 768px) {
    body.mobile-release-ready #header-android-download-btn {
      display: inline-flex;
    }
  }

  #mobile-avatar-btn {
    border-radius: 9999px;
    overflow: hidden;
  }

  #my-duties .duty-tab-btn {
    flex: 0 0 auto;
    padding: 7px 12px;
    font-size: 11.5px;
  }

  #my-duties #subtab-mine,
  #my-duties #subtab-transferred {
    min-width: 108px;
    text-align: center;
    font-size: 13px;
    padding: 8px 10px;
  }

  #my-duties .mb-4.p-3.md\:p-3.bg-white.dark\:bg-gray-800.rounded-b-xl.rounded-tr-xl.shadow-sm.border.border-t-0.border-gray-100.dark\:border-gray-700.items-center {
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: stretch;
  }

  #my-duties .mb-4.p-3.md\:p-3.bg-white.dark\:bg-gray-800.rounded-b-xl.rounded-tr-xl.shadow-sm.border.border-t-0.border-gray-100.dark\:border-gray-700.items-center .ml-auto {
    margin-left: 0;
    width: 100%;
  }

  #my-duties #filter-priority {
    width: 100%;
  }

  #app main {
    padding-top: 14px;
    padding-bottom: 96px;
    background: linear-gradient(180deg, rgba(243, 248, 255, 0.95), rgba(237, 244, 253, 0.9));
  }

  #app .section {
    max-width: 100%;
  }

  html.dark #app main {
    background: linear-gradient(180deg, rgba(9, 18, 36, 0.95), rgba(8, 16, 34, 0.98));
  }

  #app .section > h2 {
    font-size: 1.42rem;
    margin-bottom: 12px;
  }

  #kpi-row {
    gap: 10px;
  }

  #kpi-row > button {
    border-radius: 14px;
    padding: 14px 12px;
    min-height: 104px;
  }

  .duty-card {
    border-radius: 14px;
    padding: 12px;
  }

  #my-duties .duty-tab-btn,
  #all-duties .all-tab-btn,
  #approvals button[id^="approval-tab"] {
    padding: 8px 14px;
    font-size: 12px;
  }

  #bottom-nav,
  #admin-bottom-nav {
    height: calc(74px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
  }

  #bottom-nav > button,
  #admin-bottom-nav > button {
    min-width: 40px;
    min-height: 40px;
  }

  #profile-sheet .absolute,
  #filters-sheet .absolute,
  #more-menu .absolute,
  #admin-more-sheet .absolute {
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    box-shadow: 0 -12px 32px rgba(15, 23, 42, 0.22);
  }
}

/* User menu dropdown animation */
#user-menu-dropdown:not(.hidden) {
  animation: dropdownIn 0.15s ease-out;
}

@keyframes dropdownIn {
  from { opacity: 0; transform: translateY(-6px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Desktop header user zone */
@media (min-width: 769px) {
  #user-menu-zone {
    position: relative;
  }
  #header-avatar {
    cursor: default;
  }
}

/* ===========================
   PWA & Mobile UX
   =========================== */

/* Prevent text selection on tap-targets */
button, [onclick] {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
}

/* Smooth scroll for all scrollable areas */
* {
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

/* Focus-visible only (keyboard) — remove ugly outline on mouse click */
:focus:not(:focus-visible) { outline: none; }
:focus-visible { outline: 2px solid var(--ui-primary); outline-offset: 2px; border-radius: 6px; }

/* === Section animations === */
.section {
  animation: sectionIn 0.22s ease forwards;
}

@keyframes sectionIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* === Improved calendar === */
#my-calendar .bg-white,
#admin-calendar .bg-white {
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  box-shadow: var(--ui-shadow-sm);
}

/* Calendar prev/next buttons */
#my-calendar button,
#admin-calendar button {
  border-radius: 10px;
  background: #f1f5f9;
  padding: 6px 14px;
  font-weight: 600;
  font-size: 13px;
}
html.dark #my-calendar button,
html.dark #admin-calendar button {
  background: rgba(255,255,255,0.1);
  color: #e2e8f0;
}

/* === Holiday list === */
#holidays-list .bg-white,
#holidays-list > div {
  border-radius: 14px;
}

/* === Report table row styles === */
#rep-tbody tr:nth-child(odd) {
  background: rgba(241, 245, 249, 0.5);
}
html.dark #rep-tbody tr:nth-child(odd) {
  background: rgba(255,255,255,0.04);
}
#rep-tbody td {
  padding: 8px 12px 8px 0;
  font-size: 13px;
  border-bottom: 1px solid rgba(226,232,240,0.5);
}
html.dark #rep-tbody td {
  border-bottom-color: rgba(255,255,255,0.05);
}

/* === Approvals section filter pills === */
#approvals button[id^="approval-tab"] {
  transition: transform 0.14s ease, box-shadow 0.14s ease;
}
#approvals button[id^="approval-tab"]:hover {
  transform: translateY(-1px);
}

/* === Bottom nav label text === */
#bottom-nav span.text-xs,
#admin-bottom-nav span.text-xs {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* === KPI card icon bg in dark mode === */
html.dark .bg-green-100 { background-color: rgba(22,163,74,0.18) !important; }
html.dark .bg-amber-100 { background-color: rgba(217,119,6,0.18) !important; }
html.dark .bg-red-100   { background-color: rgba(220,38,38,0.18) !important; }
html.dark .bg-blue-100  { background-color: rgba(37,99,235,0.18) !important; }
html.dark .bg-purple-100 { background-color: rgba(147,51,234,0.18) !important; }

/* === Settings profile avatar === */
#profile-avatar-display {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
#profile-avatar-display:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(37,99,235,0.25);
}

/* === Users section avatar gradient === */
.user-avatar-gradient {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
}

/* === Chart bar === */
#rep-chart .bar {
  border-radius: 6px 6px 0 0;
  transition: opacity 0.12s;
}
#rep-chart .bar:hover { opacity: 0.75; }

/* === Admin Calendar header === */
#admin-calendar-month-year,
#calendar-month-year {
  font-weight: 700;
  font-size: 1rem;
}

/* === Improved modal backdrop === */
.modal-backdrop {
  backdrop-filter: blur(6px);
}

/* === Badge pulse for pending approvals === */
#approval-count-badge {
  animation: badgeBounce 1.6s ease infinite;
}
@keyframes badgeBounce {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.06); }
}