/* ============================================================
   Davi Santos · portfólio
   Madrugada voltando pra casa: asfalto, poste, farol, vidro úmido.
   ============================================================ */

:root {
  --bg: oklch(0.16 0.014 250);
  --bg-deep: oklch(0.115 0.012 250);
  --bg-2: oklch(0.195 0.015 250); /* second background below the divider: dark steel blue-gray */

  --ink: oklch(0.94 0.018 85);
  --muted: oklch(0.74 0.022 75);
  --faint: oklch(0.62 0.025 65);

  --amber: oklch(0.80 0.12 72);

  --line: oklch(0.95 0.02 80 / 0.10);
  --tint: oklch(0.80 0.12 72 / 0.05);

  --serif: "Spectral", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --maxw: 1100px;

  --z-content: 2;
  --z-grain: 40;
  --z-nav: 50;
}

/* ---------- reset / base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
  background: var(--bg-deep);
}

body {
  position: relative;
  min-height: 100svh;
  overflow-x: hidden;
  font-family: var(--serif);
  font-weight: 400;
  color: var(--ink);
  background: var(--bg-2);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main,
.foot {
  position: relative;
  z-index: var(--z-content);
}

a {
  color: inherit;
}

::selection {
  background: var(--amber);
  color: var(--bg);
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
  border-radius: 3px;
}

/* ---------- custom scrollbar: warm amber ---------- */
html {
  scrollbar-width: thin;
  scrollbar-color: oklch(0.66 0.11 70) transparent;
}

::-webkit-scrollbar {
  width: 11px;
  height: 11px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: oklch(0.66 0.11 70);
  border-radius: 999px;
  border: 3px solid var(--bg-deep); /* insets the thumb so it reads thin */
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: oklch(0.8 0.12 72);
}

/* ---------- hero night scene: warm glows + soft sweeping light cones ---------- */
/* Scoped to the hero (the first of the two backgrounds). Opaque gradient base,
   warm corner glows, and soft conic light cones that only `transform`. No blur,
   no JS, nothing per-frame — the earlier lag is gone. */
.scene {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw; /* break out of the max-width hero to full-bleed */
  transform: translateX(-50%);
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  isolation: isolate;
  contain: layout paint style;
  background:
    linear-gradient(90deg, var(--bg-deep) 0%, transparent 12%, transparent 88%, var(--bg-deep) 100%),
    radial-gradient(135% 78% at 50% -8%, oklch(0.215 0.022 258 / 0.9), transparent 60%),
    linear-gradient(180deg, oklch(0.185 0.016 252) 0%, var(--bg) 55%, var(--bg-deep) 100%);
}

/* Only the three sweeping cones fade in shortly after load (the dark gradient
   and the glows are there from the start), so the cones "come on" gently. */
.lights {
  position: absolute;
  inset: 0;
}
.js .lights {
  opacity: 0;
  animation: lights-in 2s ease-in-out 0.5s forwards;
}
@keyframes lights-in {
  to { opacity: 1; }
}

.glow {
  position: absolute;
  border-radius: 50%;
}

.glow--amber {
  width: 72vmax;
  height: 72vmax;
  top: -30vmax;
  right: -22vmax;
  background: radial-gradient(circle, oklch(0.78 0.12 70 / 0.22), transparent 60%);
}

.glow--cool {
  width: 58vmax;
  height: 58vmax;
  bottom: -28vmax;
  left: -22vmax;
  background: radial-gradient(circle, oklch(0.55 0.05 250 / 0.2), transparent 62%);
}

/* The original GTA-V-style soft blurred light cones sweeping up from the foot of
   the hero. PERF: the blurred wedge lives on a STATIC `::before` (rasterized once
   and cached by the GPU); only the `.beam` wrapper rotates (main.js) + pulses
   opacity. So the expensive blur is never recomputed per frame. */
.beam {
  position: absolute;
  bottom: 0; /* apex pinned to the foot of the hero, regardless of hero height */
  height: 165vh;
  transform-origin: 50% 100%;
  transform: rotate(-3deg); /* no-JS fallback; main.js drives the live angle */
  will-change: transform;
  backface-visibility: hidden;
}

.beam::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(43% 100%, 57% 100%, 100% 0, 0 0);
  filter: blur(18px);
}

.beam--1 {
  left: 24%;
  width: 40vmax;
  transform: rotate(-1deg); /* matches main.js's t=0 angle, so no flash on load */
  animation: pulse 7s ease-in-out infinite backwards;
}
.beam--1::before {
  background: linear-gradient(to top, oklch(0.8 0.12 72 / 0.34), oklch(0.8 0.12 72 / 0.1) 40%, transparent 76%);
}

.beam--2 {
  left: 62%;
  width: 44vmax;
  transform: rotate(12deg);
  animation: pulse 9s ease-in-out infinite 1.5s backwards;
}
.beam--2::before {
  background: linear-gradient(to top, oklch(0.7 0.16 45 / 0.3), oklch(0.7 0.16 45 / 0.09) 42%, transparent 78%);
}

.beam--3 {
  left: 46%;
  width: 26vmax;
  transform: rotate(-14deg);
  animation: pulse 6s ease-in-out infinite 0.7s backwards;
}
.beam--3::before {
  background: linear-gradient(to top, oklch(0.93 0.04 88 / 0.22), transparent 66%);
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 0.78; }
}

/* ---------- lower panel: the second (steel) background ---------- */
/* Opaque, pulled up over the foot of the hero so its top edge covers where the
   light cones originate. The divider sits on that edge. */
.lower {
  position: relative;
  z-index: 2;
  margin-top: -5.5vh;
  background: var(--bg-2);
}

/* ---------- divider: a single warm line between the two backgrounds ---------- */
.divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    oklch(0.82 0.1 72 / 0.55) 18%,
    oklch(0.82 0.1 72 / 0.55) 82%,
    transparent
  );
}

.grain {
  position: absolute;
  inset: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: 0.08;
  contain: layout paint style;
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='160'%20height='160'%3E%3Cfilter%20id='n'%3E%3CfeTurbulence%20type='fractalNoise'%20baseFrequency='0.85'%20numOctaves='2'%20stitchTiles='stitch'/%3E%3C/filter%3E%3Crect%20width='100%25'%20height='100%25'%20filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 160px 160px;
}

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  border-bottom: 1px solid transparent;
}

/* Transition only after the first paint (added by main.js), so the initial
   scrolled/unscrolled state applies instantly — no flash on reload. */
.nav.is-ready {
  transition: background 0.5s var(--ease), backdrop-filter 0.5s var(--ease),
    border-color 0.5s var(--ease);
}

.nav.is-scrolled {
  background: oklch(0.16 0.014 250 / 0.62);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(1rem, 2.2vw, 1.5rem) clamp(1.25rem, 5vw, 3rem);
}

.nav__brand {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink);
}

.nav__links {
  display: flex;
  gap: clamp(1.1rem, 3vw, 2.25rem);
}

.nav__links a {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--faint);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--amber);
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 7rem clamp(1.25rem, 5vw, 3rem) 6rem;
}

.hero__inner {
  position: relative;
  z-index: 1; /* text sits above the light cones */
  max-width: 60rem;
}

.kicker {
  font-family: var(--mono);
  font-size: clamp(0.72rem, 1.5vw, 0.82rem);
  letter-spacing: 0.04em;
  color: var(--amber);
}

.hero__name {
  position: relative;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(3rem, 11vw, 6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin-top: 1.1rem;
  color: var(--ink);
}

/* Any `.lit` hero text warms to the light's colour exactly where a cone crosses
   it. A warm clone (`content: attr(data-text)`) is revealed only inside a soft
   band whose width = the cone's width at THAT element's height; main.js sets
   --w/--mx per beam per element. The base text stays solid, so this is light,
   not gradient-text. */
.lit {
  position: relative;
}

.lit::before,
.lit::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  pointer-events: none;
  letter-spacing: inherit;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

/* rust band = beam 2 */
.lit::before {
  color: oklch(0.82 0.15 50);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent);
  -webkit-mask-size: var(--w2, 0px) 100%;
  mask-size: var(--w2, 0px) 100%;
  -webkit-mask-position: var(--mx2, -9999px) 0;
  mask-position: var(--mx2, -9999px) 0;
}

/* amber bands = beams 1 and 3 */
.lit::after {
  color: oklch(0.9 0.12 80);
  -webkit-mask-image:
    linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent),
    linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent);
  mask-image:
    linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent),
    linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent);
  -webkit-mask-size: var(--w1, 0px) 100%, var(--w3, 0px) 100%;
  mask-size: var(--w1, 0px) 100%, var(--w3, 0px) 100%;
  -webkit-mask-position: var(--mx1, -9999px) 0, var(--mx3, -9999px) 0;
  mask-position: var(--mx1, -9999px) 0, var(--mx3, -9999px) 0;
}

/* The tint fades in on the same clock as the cones, so the text warms up as the
   light comes on rather than before it. */
.js .lit::before,
.js .lit::after {
  opacity: 0;
  animation: lights-in 3s ease-in-out 1.8s forwards;
}

.hero__tagline {
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(1.1rem, 3vw, 1.65rem);
  color: var(--muted);
  margin-top: 1.4rem;
}

/* ---------- sections ---------- */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3rem, 7vh, 5.5rem) clamp(1.25rem, 5vw, 3rem);
}

.section__head {
  margin-bottom: clamp(2.5rem, 5.5vw, 4.25rem);
}

.section__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 18ch;
}

/* ---------- sobre ---------- */

.prose {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  max-width: 62ch;
}

.prose p {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.75;
  color: var(--muted);
  text-wrap: pretty;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--line);
  transition: color 0.3s var(--ease), text-decoration-color 0.3s var(--ease);
}

.prose a:hover,
.prose a:focus-visible {
  color: var(--amber);
  text-decoration-color: var(--amber);
}

/* Author's reminder to write this section later, intentionally unfinished. */
.prose__placeholder {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--faint);
  padding: 1.5rem 1.8rem;
  border: 1px dashed oklch(0.95 0.02 80 / 0.2);
  border-radius: 4px;
}

/* ---------- stack ---------- */

.stack {
  display: flex;
  flex-direction: column;
  max-width: 920px;
}

.stack__group {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 1.5rem 2.5rem;
  padding: clamp(1.9rem, 4.4vw, 2.9rem) 0;
  border-top: 1px solid var(--line);
}

.stack__group:last-child {
  border-bottom: 1px solid var(--line);
}

.stack__label {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--faint);
  padding-top: 0.55rem;
}

.stack__items {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.8rem;
}

.stack__items span {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  color: var(--muted);
  transition: color 0.35s var(--ease);
  cursor: default;
}

.stack__items span:hover {
  color: var(--amber);
}

.stack__items em {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.55em;
  color: var(--faint);
  letter-spacing: 0.02em;
  vertical-align: 0.25em;
  margin-left: 0.35em;
}

/* ---------- contato ---------- */

.contato__note {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  line-height: 1.6;
  color: var(--muted);
  max-width: 36ch;
  margin-bottom: clamp(2rem, 5vw, 3rem);
  text-wrap: pretty;
}

.contato__links {
  list-style: none;
  max-width: 720px;
}

.contato__links li {
  border-top: 1px solid var(--line);
  transition: background 0.4s var(--ease);
}

.contato__links li:last-child {
  border-bottom: 1px solid var(--line);
}

.contato__links li:has(a:hover),
.contato__links li:has(a:focus-visible) {
  background: var(--tint);
}

.contato__links a {
  display: flex;
  align-items: baseline;
  gap: clamp(0.9rem, 3vw, 2rem);
  padding: clamp(1.35rem, 3.2vw, 1.85rem) 0.8rem;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.4s var(--ease);
}

.contato__links a:hover,
.contato__links a:focus-visible {
  transform: translateX(0.6rem);
}

.contato__name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.4rem, 4vw, 2rem);
  transition: color 0.35s var(--ease);
}

.contato__addr {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--faint);
  transition: color 0.35s var(--ease);
}

.contato__arrow {
  margin-left: auto;
  margin-right: 0.75rem; /* inset from the right edge, gives the arrow room */
  align-self: center;
  font-size: 1.15rem;
  color: var(--faint);
  transition: transform 0.4s var(--ease), color 0.35s var(--ease);
}

.contato__links a:hover .contato__name,
.contato__links a:focus-visible .contato__name {
  color: var(--amber);
}

.contato__links a:hover .contato__addr,
.contato__links a:focus-visible .contato__addr {
  color: var(--muted);
}

.contato__links a:hover .contato__arrow,
.contato__links a:focus-visible .contato__arrow {
  transform: translate(3px, -3px);
  color: var(--amber);
}

/* ---------- footer ---------- */

.foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 3rem 1.5rem 4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--faint);
}

.foot__year {
  margin-top: 0.35rem;
  text-align: center;
}

/* ---------- reveal motion (enhances an already-visible default) ---------- */

/* Focus-in entrance: text emerges out of a soft blur (a "focus pull", per
   impeccable's motion materials) — on theme with the fogged-glass / distance
   feel, more distinctive than a plain fade-up. */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  filter: blur(12px);
}

.js .reveal.is-in {
  opacity: 1;
  transform: none;
  filter: blur(0);
  transition: opacity 0.85s var(--ease), transform 1.05s var(--ease),
    filter 1.05s var(--ease);
}

.js .hero__inner .reveal:nth-child(1) { transition-delay: 0.05s; }
.js .hero__inner .reveal:nth-child(2) { transition-delay: 0.18s; }
.js .hero__inner .reveal:nth-child(3) { transition-delay: 0.31s; }
.js .hero__inner .reveal:nth-child(4) { transition-delay: 0.44s; }

/* stagger contact rows under their revealed list */
.js .contato__links li {
  opacity: 0;
  transform: translateY(14px);
  filter: blur(9px);
}

.js .contato__links.is-in li {
  opacity: 1;
  transform: none;
  filter: blur(0);
  transition: opacity 0.8s var(--ease), transform 0.95s var(--ease),
    filter 0.95s var(--ease);
}

.js .contato__links.is-in li:nth-child(1) { transition-delay: 0.06s; }
.js .contato__links.is-in li:nth-child(2) { transition-delay: 0.16s; }
.js .contato__links.is-in li:nth-child(3) { transition-delay: 0.26s; }

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  .nav__inner {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
    justify-content: flex-end;
  }
  /* Hero already carries the name; drop the nav brand so the links never clip. */
  .nav__brand {
    display: none;
  }
  .nav__links {
    gap: 1.25rem;
  }
  .nav__links a {
    font-size: 0.78rem;
  }
  .stack__group {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }
  .stack__label {
    padding-top: 0;
  }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .js .reveal,
  .js .reveal.is-in,
  .js .contato__links li,
  .js .contato__links.is-in li {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
  .beam {
    animation: none !important;
  }
  /* Hold the cones in a composed crossing pose instead of sweeping. */
  .beam--1 { transform: rotate(-7deg); opacity: 0.6; }
  .beam--2 { transform: rotate(8deg); opacity: 0.55; }
  .beam--3 { transform: rotate(-2deg); opacity: 0.5; }
  /* Lights are simply present (no fade-in), and there's no light-tracking; the
     solid base text stands on its own. */
  .lights {
    opacity: 1 !important;
    animation: none !important;
  }
  .lit::before,
  .lit::after {
    opacity: 0 !important;
    animation: none !important;
  }
}