/*
 * AvenUI Design Tokens
 * =====================
 * Import this file in your app.css AFTER tailwind base/components:
 *
 *   @import "../../deps/aven_ui/assets/css/avenui.css";
 *
 * Or with Tailwind v4 (css-first):
 *   @import "aven_ui/assets/css/avenui.css";
 */

/* ─────────────────────────────────────────────
   1. CSS Custom Properties (Design Tokens)
   ───────────────────────────────────────────── */

:root {
  /* Brand */
  --avn-purple-50:  #f5f3ff;
  --avn-purple-100: #ede9fe;
  --avn-purple-200: #ddd6fe;
  --avn-purple-400: #a78bfa;
  --avn-purple-500: #8b5cf6;
  --avn-purple-600: #7c3aed;   /* Primary */
  --avn-purple-700: #6d28d9;
  --avn-purple-800: #5b21b6;
  --avn-purple-900: #4c1d95;

  /* Backgrounds */
  --avn-background:   #ffffff;
  --avn-card:         #ffffff;
  --avn-muted:        #f8f8f7;
  --avn-muted-hover:  #f1f0ef;

  /* Foregrounds */
  --avn-foreground:         #0f0f0e;
  --avn-muted-foreground:   #737370;
  --avn-placeholder:        #a3a39f;

  /* Borders */
  --avn-border:       rgba(0, 0, 0, 0.10);
  --avn-border-focus: var(--avn-purple-600);

  /* Radius */
  --avn-radius:     6px;
  --avn-radius-lg:  10px;
  --avn-radius-xl:  14px;
  --avn-radius-full: 9999px;

  /* Shadows (performance-safe: composited on GPU) */
  --avn-shadow-sm:  0 1px 2px 0 rgb(0 0 0 / 0.05);
  --avn-shadow:     0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.05);
  --avn-shadow-md:  0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);

  /* Z-index scale */
  --avn-z-dropdown:  1000;
  --avn-z-sticky:    1100;
  --avn-z-overlay:   1200;
  --avn-z-modal:     1300;
  --avn-z-toast:     1400;
  --avn-z-tooltip:   1500;
}

/* ─────────────────────────────────────────────
   2. Dark Mode Tokens
   ───────────────────────────────────────────── */

.dark, [data-theme="dark"] {
  --avn-background:         #0e0e0d;
  --avn-card:               #161615;
  --avn-muted:              #1d1d1c;
  --avn-muted-hover:        #252523;
  --avn-foreground:         #f5f5f4;
  --avn-muted-foreground:   #8a8a85;
  --avn-placeholder:        #5a5a56;
  --avn-border:             rgba(255, 255, 255, 0.09);
}

/* ─────────────────────────────────────────────
   3. Tailwind CSS v3 — theme() extension via
      tailwind.config.js (reference only here)
   ───────────────────────────────────────────── */

/*
  Add to your tailwind.config.js:

  theme: {
    extend: {
      colors: {
        "avn-purple":           "var(--avn-purple-600)",
        "avn-purple-dark":      "var(--avn-purple-700)",
        "avn-background":       "var(--avn-background)",
        "avn-card":             "var(--avn-card)",
        "avn-foreground":       "var(--avn-foreground)",
        "avn-muted":            "var(--avn-muted)",
        "avn-muted-foreground": "var(--avn-muted-foreground)",
        "avn-border":           "var(--avn-border)",
      },
      borderRadius: {
        "elx":    "var(--avn-radius)",
        "avn-lg": "var(--avn-radius-lg)",
        "avn-xl": "var(--avn-radius-xl)",
      },
      ringColor: {
        "avn-purple": "var(--avn-purple-600)",
      }
    }
  }
*/

/* ─────────────────────────────────────────────
   4. Tailwind v4 CSS-first theme (optional)
      Use this block if you're on Tailwind v4
   ───────────────────────────────────────────── */

/*
@theme {
  --color-avn-purple:           var(--avn-purple-600);
  --color-avn-purple-dark:      var(--avn-purple-700);
  --color-avn-background:       var(--avn-background);
  --color-avn-card:             var(--avn-card);
  --color-avn-foreground:       var(--avn-foreground);
  --color-avn-muted:            var(--avn-muted);
  --color-avn-muted-foreground: var(--avn-muted-foreground);
  --color-avn-border:           var(--avn-border);
  --radius-elx:                 var(--avn-radius);
  --radius-avn-lg:              var(--avn-radius-lg);
}
*/

/* ─────────────────────────────────────────────
   5. Base resets (performance-safe)
   ───────────────────────────────────────────── */

/* Smooth color transitions for dark mode toggle */
*,
*::before,
*::after {
  /* Only transition color props, never layout — avoids layout thrashing */
  transition-property: color, background-color, border-color, outline-color, fill, stroke;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 100ms;
}

/* Remove transitions on motion-sensitive users */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles — visible only for keyboard navigation */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--avn-purple-600);
  outline-offset: 2px;
}

/* ─────────────────────────────────────────────
   6. Utility classes (non-Tailwind fallback)
      Used by components when Tailwind is absent
   ───────────────────────────────────────────── */

.avn-card {
  background: var(--avn-card);
  border: 1px solid var(--avn-border);
  border-radius: var(--avn-radius-lg);
}

.avn-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--avn-background);
  border: 1px solid var(--avn-border);
  border-radius: var(--avn-radius);
  color: var(--avn-foreground);
  font-size: 0.875rem;
  line-height: 1.5;
  transition: border-color 150ms, box-shadow 150ms;
}

.avn-input:focus {
  border-color: var(--avn-purple-600);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--avn-purple-600) 20%, transparent);
  outline: none;
}

/* ─────────────────────────────────────────────
   7. LiveView-specific performance helpers
   ───────────────────────────────────────────── */

/*
  Prevent layout shifts during LiveView patch cycles.
  Applied on phx-update="append" and "stream" containers.
*/
[phx-update="stream"] > * {
  /* Promote to GPU layer to avoid repaint storms on stream inserts */
  will-change: auto;
  contain: layout style;
}

/*
  Prevent FOUC during phx-loading states.
  Phoenix adds phx-loading class to the <html> element on navigation.
*/
.phx-loading [data-avn-page-content] {
  opacity: 0.6;
  pointer-events: none;
  transition: opacity 200ms;
}

/* Toast / flash positioning (used with Flash component) */
.avn-flash-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: var(--avn-z-toast);
  pointer-events: none;
}

.avn-flash-container > * {
  pointer-events: auto;
}