/* ============================================================
   M-agency Presentation Design System — Effects
   Shadows are SUBTLE. The house style is flat & clean: thin
   hairline borders, soft single-layer card shadows, colored
   header bars rather than heavy elevation.
   ============================================================ */

:root {
  /* ---- Shadows (restrained) ---- */
  --shadow-card:  0 1px 3px rgba(16, 35, 64, 0.08), 0 1px 2px rgba(16, 35, 64, 0.06);
  --shadow-panel: 0 4px 16px rgba(16, 35, 64, 0.10);
  --shadow-pop:   0 8px 28px rgba(16, 35, 64, 0.16);
  --shadow-none:  none;

  /* ---- Photo overlays (title slides) ---- */
  /* navy diagonal/linear veil laid over full-bleed photography */
  --overlay-navy:  linear-gradient(110deg, rgba(12,35,64,0.86) 0%, rgba(20,51,92,0.62) 55%, rgba(20,51,92,0.30) 100%); /* @kind other */
  --overlay-navy-flat: rgba(12,35,64,0.55); /* @kind other */
  --overlay-dark:  linear-gradient(180deg, rgba(15,20,28,0.10) 0%, rgba(15,20,28,0.78) 100%); /* @kind other */

  /* ---- Focus ring ---- */
  --focus-ring: 0 0 0 3px var(--accent-tint);

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1); /* @kind other */
  --ease-std: cubic-bezier(0.4, 0.0, 0.2, 1); /* @kind other */
  --dur-fast: 120ms; /* @kind other */
  --dur-base: 200ms; /* @kind other */
  --dur-slow: 340ms; /* @kind other */
  --transition-base: all var(--dur-base) var(--ease-std); /* @kind other */
}