/* Mobile Adaptations - All Devices */

/* Set global device type variables */
:root {
  --is-mobile: 0;
  --device-type: 'desktop';
  --font-scale: 1;
}

@media (max-width: 1024px) {
:root.mobile-pointer:not(.desktop-runtime) {
    --is-mobile: 1;
    --device-type: 'mobile';
    --font-scale: 0.9;
  }
}

/* Utility classes for device-specific styling */
.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

@media (max-width: 1024px) {
  :root.mobile-pointer:not(.desktop-runtime) .desktop-only {
    display: none !important;
  }

  :root.desktop-runtime .mobile-only {
    display: none !important;
  }

  :root.mobile-pointer:not(.desktop-runtime) .mobile-only {
    display: block !important;
  }
}

/* General mobile improvements for all mobile devices */
@media (max-width: 1024px) {
  /* Override CSS custom properties for mobile */
  :root.mobile-pointer:not(.desktop-runtime) {
    --text-markdown: 1rem;
    --text-code: 0.875rem;
    --text-ui-header: 0.9375rem;
    --text-ui-label: 0.875rem;
    --text-meta: 0.875rem;
    --text-micro: 0.8125rem;
  }

  /* Force override with higher specificity */
  :root.mobile-pointer:not(.desktop-runtime) * {
    --text-markdown: 1rem !important;
    --text-code: 0.875rem !important;
    --text-ui-header: 0.9375rem !important;
    --text-ui-label: 0.875rem !important;
    --text-meta: 0.875rem !important;
    --text-micro: 0.8125rem !important;
  }

  /* Additional override for elements using typography classes */
  :root.mobile-pointer:not(.desktop-runtime) .typography-markdown,
  :root.mobile-pointer:not(.desktop-runtime) .typography-code,
  :root.mobile-pointer:not(.desktop-runtime) .typography-ui-header,
  :root.mobile-pointer:not(.desktop-runtime) .typography-ui-label,
  :root.mobile-pointer:not(.desktop-runtime) .typography-meta,
  :root.mobile-pointer:not(.desktop-runtime) .typography-micro {
    font-size: unset !important;
  }

  /* Fix font size for tool displays */
  :root.mobile-pointer:not(.desktop-runtime) [class*="tool"],
  :root.mobile-pointer:not(.desktop-runtime) [class*="code"] {
    --text-code: 0.875rem !important;
    font-size: var(--text-code) !important;
  }

  /* Improve touch targets for mobile */
  :root.mobile-pointer:not(.desktop-runtime) button,
  :root.mobile-pointer:not(.desktop-runtime) .btn,
  :root.mobile-pointer:not(.desktop-runtime) [role="button"] {
    min-height: 36px;
    min-width: 36px;
  }

  /* Improve input field touch targets */
  :root.mobile-pointer:not(.desktop-runtime) input,
  :root.mobile-pointer:not(.desktop-runtime) textarea,
  :root.mobile-pointer:not(.desktop-runtime) select {
    min-height: 36px;
  }

  /* Fix mobile text inputs */
  :root.mobile-pointer:not(.desktop-runtime) input[type="text"],
  :root.mobile-pointer:not(.desktop-runtime) input[type="search"],
  :root.mobile-pointer:not(.desktop-runtime) input[type="email"],
  :root.mobile-pointer:not(.desktop-runtime) input[type="password"],
  :root.mobile-pointer:not(.desktop-runtime) textarea {
    font-size: 16px !important; /* Prevents iOS zoom */
  }

  /* Prevent keyboard on non-input elements */
  :root.mobile-pointer:not(.desktop-runtime)
    button:not([type="submit"]):not([type="button"]):not([type="reset"]),
  :root.mobile-pointer:not(.desktop-runtime) .btn,
  :root.mobile-pointer:not(.desktop-runtime) [role="button"] {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
  }

  /* Specific fix for session buttons */
  :root.mobile-pointer:not(.desktop-runtime) button[inputmode="none"] {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
    pointer-events: auto;
  }

  /* Prevent system context menu on message content when using custom selection menu */
  :root.mobile-pointer:not(.desktop-runtime) .message-content-text {
    -webkit-touch-callout: none;
    -webkit-user-select: text;
    user-select: text;
  }


  /* Allow system context menu only when explicitly requested via the "More" button */
  :root.mobile-pointer:not(.desktop-runtime) .message-content-text.show-system-menu {
    -webkit-touch-callout: default;
  }

  /* Improve mobile spacing */
  :root.mobile-pointer:not(.desktop-runtime) .px-4 {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }

  :root.mobile-pointer:not(.desktop-runtime) .py-2 {
    padding-top: 0.75rem !important;
    padding-bottom: 0.75rem !important;
  }

  /* Fix mobile scroll containers */
  :root.mobile-pointer:not(.desktop-runtime) .overflow-hidden {
    overflow-x: hidden !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  /* Keep Streamdown code blocks horizontally scrollable on mobile. */
  :root.mobile-pointer:not(.desktop-runtime) .streamdown-content [data-streamdown="code-block-body"] {
    overflow-x: auto !important;
    overflow-y: hidden !important;
    -webkit-overflow-scrolling: touch;
  }

  /* Fix mobile viewport height */
  :root.mobile-pointer:not(.desktop-runtime),
  :root.mobile-pointer:not(.desktop-runtime) body {
    height: 100%;
    height: -webkit-fill-available;
    overflow: hidden;
  }

  /* Prevent iOS keyboard from scrolling the page */
  :root.device-mobile:not(.desktop-runtime) body,
  :root.device-mobile:not(.desktop-runtime) #root {
    position: fixed;
    inset: 0;
    width: 100%;
    overflow: hidden;
    overscroll-behavior-y: none;
  }

  /* Fix main layout container */
  :root.mobile-pointer:not(.desktop-runtime) .flex.flex-col.h-screen {
    height: 100vh;
    height: -webkit-fill-available;
    min-height: 0;
  }

  /* Fix header positioning */
  :root.device-mobile:not(.desktop-runtime) .header-safe-area {
    position: fixed;
    top: var(--oc-visual-viewport-offset-top, 0px);
    left: 0;
    right: 0;
    width: 100%;
    z-index: 50;
  }

  /* Fix main content area */
  :root.mobile-pointer:not(.desktop-runtime) .flex-1.overflow-hidden {
    min-height: 0;
    flex: 1;
  }

  /* Fix chat container */
  :root.mobile-pointer:not(.desktop-runtime) .flex.flex-col.h-full {
    height: 100%;
    min-height: 0;
  }

  /* Ensure proper flex behavior */
  :root.mobile-pointer:not(.desktop-runtime) .flex.flex-col {
    min-height: 0;
  }

  /* Mobile sidebar positioning */
  :root.mobile-pointer:not(.desktop-runtime) .mobile-sidebar-top {
    top: var(--header-height, 3rem);
    height: calc(100vh - var(--header-height, 3rem));
  }

  /* Set header height variable */
  :root.mobile-pointer:not(.desktop-runtime) .header-safe-area {
    --header-height: 3rem;
  }

  /* For mobile devices with larger header */
  @media (max-width: 768px) {
    :root.mobile-pointer:not(.desktop-runtime) .header-safe-area {
      --header-height: 3.5rem;
    }
  }

  /* For tablet devices */
  @media (min-width: 769px) and (max-width: 1024px) {
    :root.mobile-pointer:not(.desktop-runtime) .header-safe-area {
      --header-height: 3.25rem;
    }
  }
}

/* iOS PWA Adaptations */

/* iOS safe area defaults (applies to PWA + Safari) */
@supports (-webkit-touch-callout: none) {
  :root.device-mobile:not(.desktop-runtime) {
    --oc-safe-area-top: env(safe-area-inset-top, 0);
    --oc-safe-area-right: env(safe-area-inset-right, 0);
    --oc-safe-area-bottom: env(safe-area-inset-bottom, 0);
    --oc-safe-area-bottom-visual: clamp(0px, calc(var(--oc-safe-area-bottom) * 0.05), 4px);
    --oc-safe-area-left: env(safe-area-inset-left, 0);
  }

  :root.device-mobile:not(.desktop-runtime) .header-safe-area {
    padding-top: var(--oc-safe-area-top);
  }
}

/* Phase 1: iOS PWA safe area handling - Enhanced positioning approach */
@media (display-mode: standalone) {
  /* iOS-specific safe area handling with CSS variable support */
  @supports (-webkit-touch-callout: none) {
    /* Safe area handling for fixed positioned elements */
    :root {
      --oc-safe-area-top: env(safe-area-inset-top, 0);
      --oc-safe-area-right: env(safe-area-inset-right, 0);
      --oc-safe-area-bottom: env(safe-area-inset-bottom, 0);
      --oc-safe-area-bottom-visual: clamp(0px, calc(var(--oc-safe-area-bottom) * 0.05), 4px);
      --oc-safe-area-left: env(safe-area-inset-left, 0);
    }

    .header-safe-area {
      padding-top: var(--oc-safe-area-top);
    }

    .main-content-safe-area {
      padding-top: 0;
      padding-bottom: 0;
      padding-left: var(--oc-safe-area-left);
      padding-right: var(--oc-safe-area-right);
    }

    /* Safe area for bottom fixed/bottom-0 elements */
    .bottom-safe-area {
      padding-bottom: var(--oc-safe-area-bottom-visual) !important;
    }

    /* Drawer safe area - only top/bottom padding, no positioning */
    .drawer-safe-area {
      padding-top: var(--oc-safe-area-top);
      padding-bottom: var(--oc-safe-area-bottom-visual);
    }

    /* iOS keyboard home indicator safe area - used when keyboard is open */
    .ios-keyboard-safe-area {
      padding-bottom: calc(var(--oc-keyboard-home-indicator, 34px) + var(--oc-safe-area-bottom-visual, 0px)) !important;
    }

    /* Prevent keyboard-induced page scroll on iOS PWA */
    body {
      min-height: 100vh;
      min-height: -webkit-fill-available;
      position: fixed;
      inset: 0;
      width: 100%;
      overflow: hidden;
      overscroll-behavior-y: none;
    }

    /* Fix iOS viewport issues */
    .flex.flex-col.h-screen {
      min-height: 100vh;
      min-height: -webkit-fill-available;
    }

    /* Prevent content overlap in iOS */
    .flex-1.overflow-hidden {
      position: relative;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }

    /* Update header height for iOS */
    .header-safe-area {
      --header-height: 4.5rem;
    }

    .mobile-sidebar-top {
      --header-height: 4.5rem;
    }

    /* Mobile typography improvements */
    .typography-markdown {
      font-size: 1rem !important;
    }

    .typography-code {
      font-size: 0.875rem !important;
    }

    .typography-ui-header {
      font-size: 0.9375rem !important;
    }

    .typography-ui-label {
      font-size: 0.875rem !important;
    }

    .typography-meta {
      font-size: 0.875rem !important;
    }

    .typography-micro {
      font-size: 0.8125rem !important;
    }

    /* Fix font size for tool displays */
    [class*="tool"], [class*="code"] {
      font-size: 0.875rem !important;
    }
  }

  /* Fallback for non-iOS standalone mode */
  @supports not (-webkit-touch-callout: none) {
    :root {
      --oc-safe-area-top: env(safe-area-inset-top, 0);
      --oc-safe-area-right: env(safe-area-inset-right, 0);
      --oc-safe-area-bottom: env(safe-area-inset-bottom, 0);
      --oc-safe-area-bottom-visual: clamp(0px, calc(var(--oc-safe-area-bottom) * 0.05), 4px);
      --oc-safe-area-left: env(safe-area-inset-left, 0);
    }

    .header-safe-area {
      padding-top: var(--oc-safe-area-top);
    }

    .main-content-safe-area {
      padding-top: 0;
      padding-bottom: 0;
      padding-left: var(--oc-safe-area-left);
      padding-right: var(--oc-safe-area-right);
    }

    .bottom-safe-area {
      padding-bottom: var(--oc-safe-area-bottom-visual) !important;
    }
  }
}

/* Phase 6: Home indicator blur gradient fix */
@media (display-mode: standalone) and (max-width: 768px) {
  .pwa-dialog-content {
    --pwa-dialog-padding: clamp(0.75rem, 3vw, 1.25rem);
    top: calc(50% + (var(--oc-safe-area-top, 0px) * 0.22));
    max-height: calc(100vh - var(--oc-safe-area-top, 0px) - var(--oc-safe-area-bottom-visual, 0px) - 20px);
    padding: var(--pwa-dialog-padding);
    padding-top: calc(var(--pwa-dialog-padding) + (var(--oc-safe-area-top, 0px) * 0.35));
    --tw-translate-y: calc(-50% + (var(--oc-safe-area-top, 0px) * 0.6));
    row-gap: clamp(0.75rem, 2vw, 1.25rem);
  }

  .pwa-dialog-content.pwa-compact {
    --pwa-dialog-padding: clamp(0.5rem, 2vw, 0.85rem);
    row-gap: clamp(0.45rem, 1.5vw, 0.8rem);
  }

  .pwa-dialog-content [data-slot="dialog-close"] {
    top: calc(0.25rem + (var(--oc-safe-area-top, 0px) * 0.35));
    right: var(--pwa-dialog-padding);
  }

  .pwa-dialog-content.pwa-compact [data-slot="dialog-close"] {
    top: calc(0.2rem + (var(--oc-safe-area-top, 0px) * 0.3));
  }

  .pwa-dialog-content .settings-page-body {
    max-width: 100%;
    padding: 0.75rem 1rem;
    row-gap: 0;
  }

  .pwa-dialog-content .settings-page-body > :not([hidden]) ~ :not([hidden]) {
    margin-top: 0.85rem;
  }

  .pwa-dialog-content .directory-dialog-body {
    padding: 0.5rem 0.75rem;
  }

  .pwa-dialog-content .directory-dialog-body .directory-grid {
    gap: 0.6rem;
  }

  .pwa-overlay-panel {
    margin-bottom: max(var(--oc-safe-area-bottom-visual, 0px), 12px);
    padding-bottom: calc(var(--oc-safe-area-bottom-visual, 0px) * 0.4);
  }

  .pwa-overlay-panel .pwa-overlay-scroll {
    padding-bottom: calc(var(--oc-safe-area-bottom-visual, 0px) + 12px);
  }
}

@media (display-mode: standalone) {
  /* Home indicator blur overlay */
  body::after {
    content: '';
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--oc-safe-area-bottom-visual, var(--oc-safe-area-bottom, env(safe-area-inset-bottom, 0)));
    background: linear-gradient(
      to top,
      var(--background) 0%,
      var(--background) 30%,
      rgba(from var(--background) r g b / 0.8) 60%,
      rgba(from var(--background) r g b / 0.3) 85%,
      transparent 100%
    );
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    pointer-events: none;
  }

  /* Fallback for browsers without rgba(from ...) support */
  @supports not (color: rgba(from white r g b / 0.5)) {
    body::after {
      background: linear-gradient(
        to top,
        var(--background) 0%,
        var(--background) 30%,
        rgba(21, 19, 19, 0.8) 60%,  /* Dark theme fallback */
        rgba(21, 19, 19, 0.3) 85%,
        transparent 100%
      );
    }

    /* Light theme fallback */
    :root body::after {
      background: linear-gradient(
        to top,
        var(--background) 0%,
        var(--background) 30%,
        rgba(248, 247, 243, 0.8) 60%,  /* Light theme fallback */
        rgba(248, 247, 243, 0.3) 85%,
        transparent 100%
      );
    }
  }
}
