/* Veltrix Studio — Design Tokens (v2, dark)
   Imported before styles.css. All values are CSS custom properties.
   Prefix: --vx-
   Palette: near-black navy base, violet / electric blue light, teal data accent.
*/

:root {
  color-scheme: dark;

  /* ---------- Color: Ink (deep navy to near-black) ---------- */
  --vx-color-primary-900: #04050A;
  --vx-color-primary-800: #070A13;
  --vx-color-primary-700: #0D1120;
  --vx-color-primary-600: #151A2D;
  --vx-color-primary-500: #232A42;
  --vx-color-primary-400: #3E4763;
  --vx-color-primary-300: #6B7492;
  --vx-color-primary-200: #9DA5C0;
  --vx-color-primary-100: #DCE1F0;

  /* ---------- Color: Accent (violet) ---------- */
  --vx-color-accent-700: #5B21B6;
  --vx-color-accent-600: #7C3AED;
  --vx-color-accent-500: #8B5CF6;
  --vx-color-accent-400: #A78BFA;
  --vx-color-accent-100: rgba(139, 92, 246, 0.14);

  /* ---------- Color: Electric blue ---------- */
  --vx-color-blue-700: #1D4ED8;
  --vx-color-blue-600: #2563EB;
  --vx-color-blue-500: #3B82F6;
  --vx-color-blue-400: #60A5FA;
  --vx-color-blue-100: rgba(59, 130, 246, 0.14);

  /* ---------- Color: Brand teal (data side) ---------- */
  --vx-color-teal-700: #0B6B58;
  --vx-color-teal-600: #12917A;
  --vx-color-teal-500: #1AA583;
  --vx-color-teal-400: #2FD4A7;
  --vx-color-teal-100: rgba(47, 212, 167, 0.14);

  /* ---------- Color: Gold (compatibility highlight) ---------- */
  --vx-color-gold-600: #B45309;
  --vx-color-gold-500: #F59E0B;
  --vx-color-gold-400: #FBBF24;
  --vx-color-gold-100: rgba(245, 158, 11, 0.16);

  /* ---------- Color: Neutrals (cool slate, dark-first) ---------- */
  --vx-color-neutral-950: #04050A;
  --vx-color-neutral-900: #080A13;
  --vx-color-neutral-800: #0F1320;
  --vx-color-neutral-700: #1A2032;
  --vx-color-neutral-600: #2A3247;
  --vx-color-neutral-500: #6B7488;
  --vx-color-neutral-400: #98A0B4;
  --vx-color-neutral-300: #C3C9D9;
  --vx-color-neutral-200: #DDE1EC;
  --vx-color-neutral-100: #EEF0F6;
  --vx-color-neutral-50: #F7F8FC;
  --vx-color-white: #FFFFFF;

  /* ---------- Color: Semantic ---------- */
  --vx-color-success: #2FD4A7;
  --vx-color-warning: #F59E0B;
  --vx-color-error: #F87171;
  --vx-color-info: #60A5FA;

  /* ---------- Surfaces & text ---------- */
  --vx-surface-page: #05060C;
  --vx-surface-card: #0A0D18;
  --vx-surface-raised: #0E1220;
  --vx-surface-dark: #04050A;
  --vx-surface-muted: #10141F;

  --vx-text-primary: #E9ECF7;
  --vx-text-secondary: #A3ABC2;
  --vx-text-tertiary: #7A839A;

  --vx-border-default: rgba(255, 255, 255, 0.09);
  --vx-border-strong: rgba(255, 255, 255, 0.18);

  /* ---------- Gradients & light ---------- */
  --vx-gradient-primary: linear-gradient(135deg, #7C3AED 0%, #4F46E5 46%, #2563EB 100%);
  --vx-gradient-text: linear-gradient(100deg, #FFFFFF 0%, #D8CDFF 38%, #A9C5FF 72%, #7DD3FC 100%);
  --vx-gradient-panel: linear-gradient(155deg, rgba(124, 58, 237, 0.28) 0%, rgba(37, 99, 235, 0.16) 42%, rgba(8, 10, 18, 0.9) 100%);
  --vx-glow-violet: radial-gradient(circle, rgba(124, 58, 237, 0.38), transparent 68%);
  --vx-glow-blue: radial-gradient(circle, rgba(37, 99, 235, 0.32), transparent 68%);

  /* ---------- Typography ---------- */
  --vx-font-display: "Manrope", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --vx-font-body: "Inter", system-ui, -apple-system, "Segoe UI", "Noto Sans Sinhala", sans-serif;
  --vx-font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", "Consolas", monospace;

  --vx-text-xs:   0.75rem;   /* 12px */
  --vx-text-sm:   0.875rem;  /* 14px */
  --vx-text-base: 1rem;      /* 16px */
  --vx-text-lg:   1.125rem;  /* 18px */
  --vx-text-xl:   1.25rem;   /* 20px */
  --vx-text-2xl:  1.5rem;    /* 24px */
  --vx-text-3xl:  1.875rem;  /* 30px */
  --vx-text-4xl:  2.25rem;   /* 36px */
  --vx-text-5xl:  3rem;      /* 48px */
  --vx-text-6xl:  3.75rem;   /* 60px */

  --vx-leading-tight: 1.06;
  --vx-leading-snug:  1.25;
  --vx-leading-normal: 1.6;
  --vx-leading-relaxed: 1.7;

  --vx-tracking-tight: -0.03em;
  --vx-tracking-normal: 0;
  --vx-tracking-wide: 0.12em;

  /* ---------- Spacing (4px base) ---------- */
  --vx-space-0:  0;
  --vx-space-1:  0.25rem;
  --vx-space-2:  0.5rem;
  --vx-space-3:  0.75rem;
  --vx-space-4:  1rem;
  --vx-space-5:  1.25rem;
  --vx-space-6:  1.5rem;
  --vx-space-8:  2rem;
  --vx-space-10: 2.5rem;
  --vx-space-12: 3rem;
  --vx-space-16: 4rem;
  --vx-space-20: 5rem;
  --vx-space-24: 6rem;
  --vx-space-32: 8rem;

  /* ---------- Radius ---------- */
  --vx-radius-sm:  0.5rem;   /* 8px */
  --vx-radius-md:  0.75rem;  /* 12px */
  --vx-radius-lg:  1rem;     /* 16px */
  --vx-radius-xl:  1.5rem;   /* 24px */
  --vx-radius-2xl: 1.75rem;  /* 28px */
  --vx-radius-pill: 9999px;

  /* ---------- Shadows ---------- */
  --vx-shadow-xs:  0 1px 2px rgba(0, 0, 0, 0.5);
  --vx-shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.45);
  --vx-shadow-md:  0 12px 30px -12px rgba(0, 0, 0, 0.75);
  --vx-shadow-lg:  0 26px 60px -26px rgba(0, 0, 0, 0.85);
  --vx-shadow-xl:  0 40px 90px -36px rgba(0, 0, 0, 0.9);
  --vx-shadow-violet: 0 18px 48px -16px rgba(124, 58, 237, 0.55);
  --vx-shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.06);

  /* ---------- Motion ---------- */
  --vx-duration-fast: 150ms;
  --vx-duration-base: 220ms;
  --vx-duration-slow: 400ms;
  --vx-ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --vx-ease-decelerate: cubic-bezier(0.16, 1, 0.3, 1);

  /* ---------- Layout ---------- */
  --vx-container-max: 1180px;
  --vx-container-content: 720px;
  --vx-gutter: 1.5rem;
  --vx-nav-height: 4.75rem;

  /* ---------- Focus ring ---------- */
  --vx-focus-ring: 0 0 0 3px rgba(139, 92, 246, 0.45);

  /* ---------- Z-index ---------- */
  --vx-z-base: 0;
  --vx-z-dropdown: 10;
  --vx-z-sticky: 20;
  --vx-z-overlay: 30;
  --vx-z-modal: 40;
  --vx-z-toast: 50;
}

@media (max-width: 767px) {
  :root {
    --vx-gutter: 1.125rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --vx-duration-fast: 0ms;
    --vx-duration-base: 0ms;
    --vx-duration-slow: 0ms;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Utility classes ---------- */
.vx-container {
  width: 100%;
  max-width: var(--vx-container-max);
  margin-inline: auto;
  padding-inline: var(--vx-gutter);
}

.vx-container--content {
  max-width: var(--vx-container-content);
}

.vx-section {
  padding-block: var(--vx-space-16);
}

@media (min-width: 1024px) {
  .vx-section {
    padding-block: var(--vx-space-24);
  }
}

.vx-grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--vx-space-6);
}

/* ---------- Component: Button ---------- */
.vx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--vx-space-2);
  height: 2.75rem;
  padding: 0 var(--vx-space-6);
  border-radius: var(--vx-radius-pill);
  font-family: var(--vx-font-body);
  font-size: var(--vx-text-sm);
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--vx-duration-base) var(--vx-ease-standard),
              color var(--vx-duration-base) var(--vx-ease-standard),
              transform var(--vx-duration-fast) var(--vx-ease-standard),
              box-shadow var(--vx-duration-base) var(--vx-ease-standard);
  text-decoration: none;
  user-select: none;
}

.vx-btn:active { transform: scale(0.98); }
.vx-btn:focus-visible { outline: none; box-shadow: var(--vx-focus-ring); }
.vx-btn:disabled,
.vx-btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

.vx-btn--sm { height: 2.25rem; padding: 0 var(--vx-space-4); font-size: var(--vx-text-xs); }
.vx-btn--lg { height: 3.25rem; padding: 0 var(--vx-space-8); font-size: var(--vx-text-base); }

.vx-btn--primary {
  background: var(--vx-gradient-primary);
  color: #fff;
  box-shadow: var(--vx-shadow-violet);
}
.vx-btn--primary:hover { filter: brightness(1.06); }

.vx-btn--secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--vx-text-primary);
  border-color: var(--vx-border-default);
}
.vx-btn--secondary:hover { background: rgba(255, 255, 255, 0.08); border-color: var(--vx-border-strong); }

.vx-btn--ghost {
  background: transparent;
  color: var(--vx-text-secondary);
}
.vx-btn--ghost:hover { background: rgba(255, 255, 255, 0.05); color: #fff; }

.vx-btn--accent {
  background: #fff;
  color: #0A0D18;
}
.vx-btn--accent:hover { background: #EDE9FF; }

/* ---------- Component: Card ---------- */
.vx-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018));
  border: 1px solid var(--vx-border-default);
  border-radius: var(--vx-radius-xl);
  box-shadow: var(--vx-shadow-sm), var(--vx-shadow-inset);
  padding: var(--vx-space-6);
  transition: transform var(--vx-duration-base) var(--vx-ease-standard),
              box-shadow var(--vx-duration-base) var(--vx-ease-standard),
              border-color var(--vx-duration-base) var(--vx-ease-standard);
}
.vx-card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--vx-shadow-lg);
  border-color: rgba(167, 139, 250, 0.4);
}
.vx-card--interactive { cursor: pointer; }

/* ---------- Component: Form fields ---------- */
.vx-field { display: flex; flex-direction: column; gap: var(--vx-space-2); }
.vx-label {
  font-size: var(--vx-text-sm);
  font-weight: 500;
  color: var(--vx-text-secondary);
}
.vx-label .vx-required { color: var(--vx-color-accent-500); margin-left: 2px; }

.vx-input,
.vx-textarea,
.vx-select {
  width: 100%;
  height: 2.75rem;
  padding: 0 var(--vx-space-4);
  border: 1px solid var(--vx-border-default);
  border-radius: var(--vx-radius-md);
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--vx-font-body);
  font-size: var(--vx-text-base);
  color: var(--vx-text-primary);
  transition: border-color var(--vx-duration-fast) var(--vx-ease-standard),
              box-shadow var(--vx-duration-fast) var(--vx-ease-standard);
}
.vx-textarea { height: auto; min-height: 7.5rem; padding: var(--vx-space-3) var(--vx-space-4); resize: vertical; }
.vx-input::placeholder,
.vx-textarea::placeholder { color: var(--vx-text-tertiary); }
.vx-input:focus,
.vx-textarea:focus,
.vx-select:focus {
  outline: none;
  border-color: rgba(167, 139, 250, 0.6);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.18);
}
.vx-input[aria-invalid="true"],
.vx-textarea[aria-invalid="true"] {
  border-color: var(--vx-color-error);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.18);
}
.vx-helper { font-size: var(--vx-text-xs); color: var(--vx-text-tertiary); }
.vx-error { font-size: var(--vx-text-xs); color: var(--vx-color-error); }

/* ---------- Component: Badge/Chip ---------- */
.vx-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--vx-space-1);
  padding: var(--vx-space-1) var(--vx-space-3);
  border-radius: var(--vx-radius-pill);
  font-size: var(--vx-text-xs);
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
}
.vx-badge--default { background: rgba(255, 255, 255, 0.06); color: var(--vx-text-secondary); }
.vx-badge--category { background: var(--vx-color-accent-100); color: var(--vx-color-accent-400); }
.vx-badge--featured { background: var(--vx-color-gold-100); color: var(--vx-color-gold-400); }
.vx-badge--new { background: var(--vx-color-teal-100); color: var(--vx-color-teal-400); }

/* ---------- Component: Nav ---------- */
.vx-nav {
  position: sticky;
  top: 0;
  z-index: var(--vx-z-sticky);
  height: var(--vx-nav-height);
  background: rgba(6, 7, 14, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--vx-duration-base) var(--vx-ease-standard),
              background-color var(--vx-duration-base) var(--vx-ease-standard);
}
.vx-nav--scrolled { border-bottom-color: var(--vx-border-default); background: rgba(6, 7, 14, 0.92); }
.vx-nav__link {
  position: relative;
  color: var(--vx-text-secondary);
  font-weight: 500;
  font-size: var(--vx-text-sm);
  text-decoration: none;
  padding: var(--vx-space-2) 0;
}
.vx-nav__link:hover { color: #fff; }
.vx-nav__link--active { color: #fff; }
.vx-nav__link--active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--vx-color-accent-500);
  border-radius: 2px;
}

/* ---------- Skip link ---------- */
.vx-skip-link {
  position: absolute;
  left: -9999px;
  top: var(--vx-space-2);
  z-index: var(--vx-z-toast);
  padding: var(--vx-space-2) var(--vx-space-4);
  background: var(--vx-color-neutral-800);
  color: #fff;
  border-radius: var(--vx-radius-md);
}
.vx-skip-link:focus { left: var(--vx-space-2); }

/* ---------- Breakpoints (reference)
   xs: 0, sm: 640px, md: 768px, lg: 1024px, xl: 1280px, 2xl: 1536px
*/