/* ==========================================================================
   Premium UI layer — additive design system, loaded after the compiled
   Tailwind stylesheet. Every rule here either (a) defines new component
   classes used by new markup hooks, or (b) re-declares existing component
   classes (.btn-primary, .tag-indigo, ...) to enrich their look without
   requiring any class-name changes in the HTML.
   ========================================================================== */

:root {
  /* Brand */
  --brand: #4f46e5;
  --brand-2: #7c3aed;
  --brand-ink: #ffffff;
  --brand-glow: rgba(79, 70, 229, 0.28);

  /* Surfaces */
  --bg: #ffffff;
  --bg-subtle: #f7f7fb;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --surface-border: rgba(15, 23, 42, 0.08);
  --hairline: rgba(15, 23, 42, 0.1);
  --hairline-mid: rgba(79, 70, 229, 0.35);

  /* Shadows (soft, layered) */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 1px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, 0.12), 0 2px 8px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 24px 48px -16px rgba(15, 23, 42, 0.18), 0 4px 16px -4px rgba(15, 23, 42, 0.08);
  --shadow-glow: 0 0 0 1px rgba(79, 70, 229, 0.12), 0 16px 40px -12px rgba(79, 70, 229, 0.28);

  /* Shape */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur-base: 360ms;
  --dur-slow: 700ms;
}

html.dark {
  --brand: #818cf8;
  --brand-2: #a78bfa;
  --brand-ink: #0b1120;
  --brand-glow: rgba(129, 140, 248, 0.22);

  --bg: #030712;
  --bg-subtle: #0a0f1e;
  --surface: rgba(15, 23, 42, 0.6);
  --surface-strong: rgba(15, 23, 42, 0.82);
  --surface-border: rgba(255, 255, 255, 0.08);
  --hairline: rgba(255, 255, 255, 0.09);
  --hairline-mid: rgba(129, 140, 248, 0.4);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 48px -16px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 0 1px rgba(129, 140, 248, 0.18), 0 16px 48px -12px rgba(129, 140, 248, 0.35);
}

/* --------------------------------------------------------------------- */
/* Base refinements                                                       */
/* --------------------------------------------------------------------- */

::selection {
  background: var(--brand-glow);
}

/* Slim, brand-tinted scrollbar */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--hairline-mid) transparent;
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background-color: var(--hairline-mid);
  border-radius: 999px;
  border: 2.5px solid var(--bg);
  background-clip: padding-box;
}

/* --------------------------------------------------------------------- */
/* Existing component classes — enriched in place, no HTML changes needed */
/* --------------------------------------------------------------------- */

.btn-primary {
  position: relative;
  background-image: linear-gradient(135deg, var(--brand), var(--brand-2));
  background-color: transparent;
  box-shadow: var(--shadow-glow);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), filter var(--dur-fast) var(--ease-out);
}
.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.btn-secondary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.tag-indigo,
.tag-slate {
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
  border: 1px solid transparent;
}
.tag-indigo {
  background-image: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(124, 58, 237, 0.1));
}
html.dark .tag-indigo {
  background-image: linear-gradient(135deg, rgba(129, 140, 248, 0.16), rgba(167, 139, 250, 0.14));
}

.section-label {
  position: relative;
  padding-left: 1.1rem;
}
.section-label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0.7rem;
  height: 2px;
  border-radius: 999px;
  background-image: linear-gradient(90deg, var(--brand), var(--brand-2));
}

/* --------------------------------------------------------------------- */
/* Glass surfaces                                                        */
/* --------------------------------------------------------------------- */

.glass-card,
.glass-panel {
  background: linear-gradient(175deg, var(--surface-strong), var(--surface));
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-lg);
}

/* Universal card polish — targets the recurring Tailwind card pattern
   (rounded-2xl border ... / rounded-xl border ...) used for case-study,
   testimonial, service, insight, and metric-tile cards across every page,
   without requiring per-page markup edits. */
main .rounded-2xl.border.border-slate-100 {
  border-color: var(--surface-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
main .rounded-2xl.border.border-slate-100:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--hairline-mid);
}
main .rounded-xl.border.border-slate-100 {
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
main .rounded-xl.border.border-slate-100:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--hairline-mid);
}

.card-hover {
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.card-hover:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* --------------------------------------------------------------------- */
/* Gradient text + numerals                                              */
/* --------------------------------------------------------------------- */

.gradient-text {
  background-image: linear-gradient(135deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-figure {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  font-feature-settings: "tnum" 1;
}

/* --------------------------------------------------------------------- */
/* Aurora / mesh gradient backdrops (CSS only, no images)                */
/* --------------------------------------------------------------------- */

.aurora-bg,
.mesh-bg {
  position: relative;
  isolation: isolate;
}
.aurora-bg::before,
.mesh-bg::before {
  content: "";
  position: absolute;
  inset: -10% -5%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.55;
  filter: blur(60px);
}
.aurora-bg::before {
  background:
    radial-gradient(38% 45% at 12% 8%, rgba(79, 70, 229, 0.22), transparent 70%),
    radial-gradient(32% 40% at 85% 15%, rgba(124, 58, 237, 0.16), transparent 70%),
    radial-gradient(30% 35% at 50% 100%, rgba(16, 185, 129, 0.08), transparent 70%);
}
.mesh-bg::before {
  background:
    radial-gradient(45% 60% at 90% 10%, rgba(124, 58, 237, 0.18), transparent 70%),
    radial-gradient(35% 45% at 5% 90%, rgba(79, 70, 229, 0.16), transparent 70%);
}
html.dark .aurora-bg::before,
html.dark .mesh-bg::before {
  opacity: 0.4;
}

/* --------------------------------------------------------------------- */
/* Hairline dividers                                                     */
/* --------------------------------------------------------------------- */

.hairline-grad {
  position: relative;
}
.hairline-grad::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline-mid) 50%, transparent);
}

/* --------------------------------------------------------------------- */
/* Scroll-reveal                                                         */
/* --------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-d1 { --reveal-delay: 80ms; }
.reveal-d2 { --reveal-delay: 160ms; }
.reveal-d3 { --reveal-delay: 240ms; }
.reveal-d4 { --reveal-delay: 320ms; }
.reveal-d5 { --reveal-delay: 400ms; }

/* --------------------------------------------------------------------- */
/* Header / footer polish                                                */
/* --------------------------------------------------------------------- */

header.site-header {
  position: relative;
  background: var(--surface-strong);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}
header.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline-mid) 50%, transparent);
}

.logo-mark {
  object-fit: cover;
  box-shadow: 0 0 0 1px var(--surface-border), 0 4px 14px -4px var(--brand-glow);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
a:hover > .logo-mark {
  transform: scale(1.04);
  box-shadow: 0 0 0 1px var(--hairline-mid), 0 4px 14px -4px var(--brand-glow);
}

/* --------------------------------------------------------------------- */
/* Hero portrait (homepage)                                              */
/* --------------------------------------------------------------------- */

/* NOTE: this compiled Tailwind build is purged to only the utility classes
   used in the original templates — any new Tailwind class (incl. new
   responsive/arbitrary-value variants) added here has no effect since it
   was never compiled. Layout/sizing for new markup is written as plain
   CSS below instead of relying on new Tailwind utilities. */

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-portrait-col {
  display: none;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr auto;
    gap: 4rem;
  }
  .hero-portrait-col {
    display: block;
  }
}

.portrait-frame {
  display: inline-block;
  width: 280px;
  background-image: linear-gradient(135deg, var(--brand), var(--brand-2));
  padding: 3px;
  border-radius: 2rem;
  box-shadow: var(--shadow-lg);
}
@media (min-width: 1280px) {
  .portrait-frame {
    width: 320px;
  }
}
.portrait-frame img {
  display: block;
  width: 100%;
  aspect-ratio: 640 / 791;
  object-fit: cover;
  border-radius: calc(2rem - 3px);
}

nav[aria-label="Main navigation"] a {
  position: relative;
  transition: color var(--dur-fast) var(--ease-out);
}
nav[aria-label="Main navigation"] a::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.35rem;
  height: 2px;
  border-radius: 999px;
  background-image: linear-gradient(90deg, var(--brand), var(--brand-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
nav[aria-label="Main navigation"] a:hover::after {
  transform: scaleX(1);
}

footer {
  position: relative;
}
footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline-mid) 50%, transparent);
}

/* --------------------------------------------------------------------- */
/* Mobile drawer stagger                                                 */
/* --------------------------------------------------------------------- */

@keyframes drawer-item-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
#mobile-nav:not(.hidden) > a {
  animation: drawer-item-in var(--dur-base) var(--ease-out) both;
}
#mobile-nav:not(.hidden) > a:nth-of-type(1) { animation-delay: 0ms; }
#mobile-nav:not(.hidden) > a:nth-of-type(2) { animation-delay: 40ms; }
#mobile-nav:not(.hidden) > a:nth-of-type(3) { animation-delay: 80ms; }
#mobile-nav:not(.hidden) > a:nth-of-type(4) { animation-delay: 120ms; }
#mobile-nav:not(.hidden) > a:nth-of-type(5) { animation-delay: 160ms; }

/* --------------------------------------------------------------------- */
/* Reading progress bar + back-to-top (injected by enhance.js)           */
/* --------------------------------------------------------------------- */

#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2.5px;
  width: 0%;
  z-index: 60;
  background-image: linear-gradient(90deg, var(--brand), var(--brand-2));
  transition: width 80ms linear;
}

#back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 50;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-strong);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-md);
  color: var(--brand);
  opacity: 0;
  transform: translateY(8px) scale(0.92);
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
#back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
#back-to-top:hover {
  box-shadow: var(--shadow-glow);
}

/* --------------------------------------------------------------------- */
/* FAQ accordion (Services page) — button + panel, JS-driven max-height  */
/* --------------------------------------------------------------------- */

.faq-trigger {
  cursor: pointer;
  background: none;
  border: 0;
  font: inherit;
  color: inherit;
}
.faq-icon {
  transition: transform var(--dur-base) var(--ease-out);
}
.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
  color: var(--brand);
}

/* --------------------------------------------------------------------- */
/* Testimonial quote accent                                              */
/* --------------------------------------------------------------------- */

.quote-mark {
  position: relative;
}
.quote-mark::before {
  content: "\201C";
  position: absolute;
  top: -0.6rem;
  left: -0.15rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 3.25rem;
  line-height: 1;
  color: var(--brand);
  opacity: 0.18;
}

/* --------------------------------------------------------------------- */
/* Timeline connector (About page)                                       */
/* --------------------------------------------------------------------- */

.timeline-track {
  position: relative;
}
.timeline-track::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background-image: linear-gradient(var(--brand), var(--brand-2));
  opacity: 0.45;
}

/* --------------------------------------------------------------------- */
/* Contact form — refined focus/hover states (no markup changes needed)  */
/* --------------------------------------------------------------------- */

#contact-form input,
#contact-form textarea,
#contact-form select {
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out);
}
#contact-form input:hover,
#contact-form textarea:hover,
#contact-form select:hover {
  border-color: var(--hairline-mid);
}
#contact-form input:focus,
#contact-form textarea:focus,
#contact-form select:focus {
  box-shadow: 0 0 0 4px var(--brand-glow);
}

/* --------------------------------------------------------------------- */
/* Prose refinements for long-form case-study / insight content          */
/* --------------------------------------------------------------------- */

.prose blockquote {
  border-image: linear-gradient(var(--brand), var(--brand-2)) 1;
}

/* --------------------------------------------------------------------- */
/* Reduced motion — disable everything introduced above                  */
/* --------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .btn-primary,
  .btn-secondary,
  .tag-indigo,
  .tag-slate,
  .card-hover,
  .logo-mark,
  nav[aria-label="Main navigation"] a::after,
  #back-to-top,
  .faq-icon {
    transition: none !important;
  }
  #mobile-nav:not(.hidden) > a {
    animation: none !important;
  }
  main .rounded-2xl.border.border-slate-100,
  main .rounded-xl.border.border-slate-100 {
    transition: none !important;
  }
}