portfolio/app/assets/css/main.css

@custom-variant dark (&:where(.dark &, :root.dark &, [data-theme="dark"] &));

@import "tailwindcss";
@import "@nuxt/ui";
@import "./transitions.css";
@import "./prose.css";
@import "./blog-content.css";

@source "../../components/**/*.{vue,js,ts}";
@source "../../layouts/**/*.vue";
@source "../../pages/**/*.vue";
@source "../../app.vue";
@source "../../error.vue";
@source "../../composables/**/*.{js,ts}";
@source "../../plugins/**/*.{js,ts}";
@source "../../utils/**/*.{js,ts}";
@source "../../data/**/*.{js,ts}";
@source "../../../content/**/*.{md,json,yaml,yml}";

@theme {
  --font-sans: 'Geist', 'DM Sans', '-apple-system', 'ui-sans-serif', 'system-ui', 'sans-serif';
  --font-display: 'Space Grotesk', 'Geist', 'ui-sans-serif', 'sans-serif';
  
  --color-primary-50: oklch(0.98 0.01 280);
  --color-primary-100: oklch(0.95 0.03 280);
  --color-primary-200: oklch(0.89 0.08 280);
  --color-primary-300: oklch(0.80 0.15 280);
  --color-primary-400: oklch(0.70 0.22 280);
  --color-primary-500: oklch(0.60 0.25 280);
  --color-primary-600: oklch(0.50 0.22 280);
  --color-primary-700: oklch(0.42 0.18 280);
  --color-primary-800: oklch(0.34 0.14 280);
  --color-primary-900: oklch(0.28 0.10 280);
  --color-primary-950: oklch(0.18 0.06 280);
}

@layer base {
  @font-face {
    font-family: "Roobert";
    font-style: normal;
    font-weight: 400;
    src:
      local(""),
      url("/fonts/Roobert-Regular.woff2") format("woff2");
  }

  @font-face {
    font-family: "Roobert";
    font-style: normal;
    font-weight: 500;
    src:
      local(""),
      url("/fonts/Roobert-Medium.woff2") format("woff2");
  }

  @font-face {
    font-family: "Roobert";
    font-style: normal;
    font-weight: 600;
    src:
      local(""),
      url("/fonts/Roobert-SemiBold.woff2") format("woff2");
  }

  /* Persian variable font (Vazirmatn) — variable woff2 for best performance */
  @font-face {
    font-family: "Vazirmatn";
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src:
      local(""),
      url("/fonts/vazirmatn/webfonts/Vazirmatn[wght].woff2") format("woff2");
  }

  html {
    overflow-y: scroll;
    /* Avoid width variation */
    scroll-padding-top: 2rem; /* Offset for fixed navbar when using anchor links */
  }

  html,
  body,
  #__nuxt,
  #__layout {
    @apply min-h-screen w-full;
    background: linear-gradient(135deg, #f8f9fc 0%, #faf5ff 50%, #fdf4ff 100%);
    color-scheme: light;
  }

  .dark html,
  .dark body,
  .dark #__nuxt,
  .dark #__layout {
    /* fallback for SSR edge cases */
  }

  :root.dark #__nuxt,
  :root.dark #__layout,
  html.dark,
  html.dark body,
  html.dark #__nuxt,
  html.dark #__layout {
    background: linear-gradient(135deg, #0a0a0f 0%, #18181b 50%, #1c1425 100%);
    color-scheme: dark;
  }

  div,
  span,
  input,
  textarea,
  button,
  select,
  a {
    @apply focus:outline-hidden;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  }

  /* Use the sans variable globally; switches automatically when we override variables */
  html,
  body {
    font-family: var(--font-sans);
  }

  /* In Persian/RTL, prefer Vazirmatn for both body and headings via variables */
  html[dir="rtl"],
  html[lang^="fa"] {
    --font-sans: 'Vazirmatn', 'Geist', 'ui-sans-serif', 'system-ui', 'sans-serif';
    --font-display: 'Vazirmatn', 'Space Grotesk', 'ui-sans-serif', 'sans-serif';
  }
}

@layer components {

  h1,
  h2,
  h3 {
    @apply font-display tracking-tight font-bold;
    background: linear-gradient(135deg, currentColor 0%, color-mix(in oklch, currentColor, violet 30%) 100%);
    -webkit-background-clip: text;
    background-clip: text;
  }

  h1 {
    @apply text-4xl sm:text-5xl lg:text-6xl;
    letter-spacing: -0.02em;
  }

  h2 {
    @apply text-3xl sm:text-4xl lg:text-5xl;
    letter-spacing: -0.01em;
  }

  h3 {
    @apply text-2xl sm:text-3xl lg:text-4xl;
  }
}

@layer utilities {
  .primary-text {
    @apply text-violet-600 dark:text-violet-400;
  }

  .primary-text-muted {
    @apply text-zinc-500 dark:text-zinc-400;
  }

  .decorated {
    @apply underline underline-offset-8 decoration-violet-500 dark:decoration-violet-400 decoration-2;
  }

  /* Soft text color helpers */
  .muted {
    @apply text-zinc-600 dark:text-zinc-300;
  }
  
  /* Gradient text effect */
  .gradient-text {
    @apply bg-gradient-to-r from-violet-600 via-purple-600 to-fuchsia-600 dark:from-violet-400 dark:via-purple-400 dark:to-fuchsia-400 bg-clip-text text-transparent;
  }

  .chip-base {
    @apply inline-flex items-center gap-1.5 rounded-2xl px-3 py-1.5 text-xs font-semibold ring-1 ring-violet-200/70 bg-gradient-to-br from-white/90 to-violet-50/60 text-violet-700 shadow-lg shadow-violet-500/10 backdrop-blur-md dark:from-violet-950/40 dark:to-violet-900/20 dark:text-violet-200 dark:ring-violet-800/50 dark:shadow-violet-500/5 transition-all hover:scale-105 hover:shadow-xl hover:shadow-violet-500/20;
  }

  /* Hide scrollbars for overflow containers */
  .no-scrollbar,
  .scrollbar-hide {
    -ms-overflow-style: none;
    /* IE and Edge */
    scrollbar-width: none;
    /* Firefox */
  }

  .no-scrollbar::-webkit-scrollbar,
  .scrollbar-hide::-webkit-scrollbar {
    display: none;
    /* Chrome, Safari, Opera */
  }

  /* Safe area bottom padding for devices with home indicator */
  .safe-bottom {
    padding-bottom: env(safe-area-inset-bottom);
  }

  /* Modern glassmorphic card */
  .glass-card {
    @apply rounded-3xl bg-white/80 dark:bg-zinc-900/50 backdrop-blur-xl shadow-xl shadow-violet-500/5 dark:shadow-violet-500/10 border border-white/20 dark:border-zinc-800/50 transition-all duration-300;
  }
  
  .glass-card:hover {
    @apply shadow-2xl shadow-violet-500/10 dark:shadow-violet-500/20 translate-y-[-2px];
  }

  /* Global hover utilities for consistent interactions */
  .hover-ring-tint {
    @apply transition-all duration-300 ease-out ring-0 hover:ring-2 hover:ring-violet-500 dark:hover:ring-violet-400 hover:bg-violet-50/60 dark:hover:bg-violet-400/10 focus-visible:ring-2 focus-visible:ring-violet-500 dark:focus-visible:ring-violet-400 focus-visible:ring-offset-2 focus-visible:ring-offset-white dark:focus-visible:ring-offset-zinc-900;
  }

  .link-hover-clean {
    @apply transition-all duration-300 hover:text-violet-600 dark:hover:text-violet-400 hover:underline underline-offset-4 decoration-violet-500/60 dark:decoration-violet-400/60;
  }
}

@layer utilities {

  /* Minimal hover: subtle bg tint, slight shadow, no ring/border change */
  .hover-minimal {
    @apply transition-all duration-300 ease-out hover:bg-violet-50/50 dark:hover:bg-white/5 hover:shadow-lg hover:shadow-violet-500/5;
  }
  
  /* Modern button with gradient */
  .btn-modern {
    @apply inline-flex items-center justify-center px-6 py-3 rounded-2xl font-semibold text-white bg-gradient-to-r from-violet-600 to-purple-600 hover:from-violet-700 hover:to-purple-700 shadow-lg shadow-violet-500/30 hover:shadow-xl hover:shadow-violet-500/40 transition-all duration-300 hover:scale-105;
  }
}

@layer utilities {

  /* Minimal outlined button: persistent subtle border and light background; hover handled separately */
  .btn-outline-minimal {
    @apply border border-violet-200/60 dark:border-violet-800/50 bg-gradient-to-br from-white/60 to-violet-50/30 dark:from-white/5 dark:to-violet-950/20 backdrop-blur-sm transition-all duration-300 hover:shadow-lg hover:shadow-violet-500/10;
  }
}

@layer utilities {

  /* Chip-style icon button inspired by SkillGrid: subtle ring, soft bg, minimal hover */
  .chip-button {
    @apply inline-flex items-center justify-center h-12 w-12 rounded-2xl ring-1 ring-violet-200/70 dark:ring-violet-800/50 bg-gradient-to-br from-white/90 to-violet-50/50 dark:from-white/10 dark:to-violet-950/30 text-violet-700 dark:text-violet-200 shadow-lg shadow-violet-500/10 backdrop-blur-md transition-all duration-300 ease-out hover:scale-110 hover:shadow-xl hover:shadow-violet-500/20 hover:from-violet-50 hover:to-violet-100 dark:hover:from-white/15 dark:hover:to-violet-900/40;
  }
}

/* View Transitions ripple for theme switch (best-practice) */
@supports (view-transition-name: theme) {
  :root {
    view-transition-name: theme;
  }

  /* Configure transition pseudo-elements */
  ::view-transition-old(theme),
  ::view-transition-new(theme) {
    animation-duration: var(--vtx-duration, 500ms);
    animation-timing-function: var(--vtx-easing, ease-in-out);
  }

  /* Old view: let new view reveal with ripple */
  ::view-transition-old(theme) {
    animation: none;
  }

  /* New view: reveal from click origin via expanding circle */
  ::view-transition-new(theme) {
    animation-name: vtx-reveal;
  }

  @keyframes vtx-reveal {
    from {
      clip-path: circle(0 at var(--vtx-x, 50vw) var(--vtx-y, 50vh));
    }

    to {
      clip-path: circle(var(--vtx-end, 200vmax) at var(--vtx-x, 50vw) var(--vtx-y, 50vh));
    }
  }
}

/* Fallback fade when View Transitions unsupported or prefers-reduced-motion */
.vtx-fade #__nuxt {
  animation: vtx-fade var(--vtx-duration, 500ms) var(--vtx-easing, ease-in-out);
}

@keyframes vtx-fade {
  from {
    opacity: 0.92;
  }

  to {
    opacity: 1;
  }
}

/* Reduced motion guard */
@media (prefers-reduced-motion: reduce) {
  :root {
    view-transition-name: none;
  }
}

/* Locale switch UX: top progress bar and quick page fade */
@layer utilities {
  .locale-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 100%;
    z-index: 1000;
    pointer-events: none;
    /* Use primary color gradient; adapt in dark mode */
    background-image: linear-gradient(to right,
        rgb(99 102 241 / 0.9),
        /* indigo-500 */
        rgb(139 92 246 / 0.9)
        /* violet-500 */
      );
    transform-origin: left center;
    animation: locale-progress-grow 600ms ease-out forwards;
  }

  @keyframes locale-progress-grow {
    from {
      transform: scaleX(0);
      opacity: 0.85;
    }

    to {
      transform: scaleX(1);
      opacity: 1;
    }
  }
}

/* Quick page fade during locale switching (client-only via documentElement class) */
.locale-switching #__nuxt {
  animation: locale-fade 600ms ease-out both;
}

@keyframes locale-fade {
  from {
    opacity: 0.92;
    filter: saturate(0.98);
  }

  to {
    opacity: 1;
    filter: saturate(1);
  }
}