/* ==========================================================================
   Chirak Web - App Core Stylesheet & Design System Tokens
   Adheres strictly to Apple Minimalist Design Principles & Zero-Emoji Rule
   ========================================================================== */

:root {
  /* Color Palette - Light Mode (Default) */
  --chirak-primary: #3B52F5;
  --chirak-primary-hover: #2D44E8;
  --chirak-primary-light: rgba(59, 82, 245, 0.08);
  --chirak-primary-border: rgba(59, 82, 245, 0.2);

  --chirak-accent: #6373FA;
  --chirak-accent-light: rgba(99, 115, 250, 0.1);

  --chirak-success: #10B981;
  --chirak-success-light: rgba(16, 185, 129, 0.1);
  --chirak-warning: #F59E0B;
  --chirak-warning-light: rgba(245, 158, 11, 0.1);
  --chirak-danger: #EF4444;
  --chirak-danger-light: rgba(239, 68, 68, 0.1);

  /* Backgrounds & Surfaces */
  --bg-app: #F8F9FA;
  --bg-card: #FFFFFF;
  --bg-card-secondary: #F3F4F6;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F3F4F6;
  --bg-input: #FFFFFF;
  --bg-overlay: rgba(15, 23, 42, 0.45);

  /* Glassmorphism Tokens */
  --glass-bg: rgba(255, 255, 255, 0.82);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --glass-blur: blur(24px) saturate(180%);

  /* Typography Colors */
  --text-primary: #1F242E;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --text-on-primary: #FFFFFF;

  /* Borders & Dividers */
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.12);

  /* Spacing System */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 20px;
  --space-xl: 24px;
  --space-2xl: 32px;

  /* Radius System */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Inter", sans-serif;
  
  /* Layout Dimensions */
  --tabbar-height: 64px;
  --sidebar-width: 280px;
  --header-height: 60px;
  --content-max-width: 1140px;
}

/* Dark Mode Tokens */
[data-theme="dark"] {
  --bg-app: #000000;
  --bg-card: #1C1C1E;
  --bg-card-secondary: #2C2C2E;
  --bg-surface: #1C1C1E;
  --bg-surface-elevated: #2C2C2E;
  --bg-input: #2C2C2E;
  --bg-overlay: rgba(0, 0, 0, 0.7);

  --glass-bg: rgba(28, 28, 30, 0.82);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);

  --text-primary: #F5F7FA;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --chirak-primary-light: rgba(59, 82, 245, 0.2);
}

/* ==========================================================================
   Base Resets & Mobile Web Ergonomics
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-primary);
  overflow-x: hidden;
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

/* iOS Input Zoom Fix: Form controls must be at least 16px to prevent viewport auto-zoom */
input, select, textarea, button {
  font-family: inherit;
  font-size: 16px !important;
  color: inherit;
}

input:focus, select:focus, textarea:focus {
  outline: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ==========================================================================
   Material Symbols (Google Icons) Micro-Icon Standard
   ========================================================================== */

.icon, .material-symbols-outlined {
  font-family: 'Material Symbols Outlined', sans-serif;
  font-weight: normal;
  font-style: normal;
  font-size: 20px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  font-feature-settings: 'liga';
  -webkit-font-feature-settings: 'liga';
  vertical-align: middle;
  user-select: none;
}

.icon-sm { font-size: 16px; }
.icon-md { font-size: 20px; }
.icon-lg { font-size: 24px; }
.icon-xl { font-size: 28px; }

/* ==========================================================================
   App Shell Layout Structure
   ========================================================================== */

#app {
  display: flex;
  min-height: 100vh;
  width: 100%;
  position: relative;
}

/* Main Content Area */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: calc(var(--tabbar-height) + env(safe-area-inset-bottom, 0px) + 32px);
  width: 100%;
}

@media (min-width: 900px) {
  .app-main {
    margin-left: var(--sidebar-width);
    padding-bottom: var(--space-2xl);
  }
}

.app-container {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-md);
}

@media (min-width: 768px) {
  .app-container {
    padding: var(--space-xl) var(--space-xl);
  }
}

/* Top Navigation Bar */
.app-header {
  position: sticky;
  top: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-md);
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
}

#btn-notification-bell.active {
  background-color: var(--chirak-primary-light);
  color: var(--chirak-primary);
}

@media (min-width: 768px) {
  .app-header {
    padding: 0 var(--space-xl);
  }
}

.header-title-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.header-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Utility Classes */
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary-color { color: var(--chirak-primary); }
.text-success { color: var(--chirak-success); }
.text-warning { color: var(--chirak-warning); }
.text-danger { color: var(--chirak-danger); }

.hide-mobile { display: none !important; }
@media (min-width: 900px) {
  .hide-mobile { display: flex !important; }
  h1.hide-mobile, h2.hide-mobile, h3.hide-mobile, p.hide-mobile { display: block !important; }
}

.hide-desktop { display: flex !important; }
@media (min-width: 900px) {
  .hide-desktop { display: none !important; }
}