/* =========================================================
   Pináculo, ateliê de posicionamento para arquitetura
   Sistema visual "plano baixo": traço de projeto arquitetônico
   sobre fundo grafite quente, com único acento em bronze.
   ========================================================= */

:root {
  /* paleta */
  --ink: #1b1916;
  --ink-2: #221f1a;
  --ink-3: #2a261f;
  --paper: #f3eee4;
  --paper-dim: #c9c0ad;
  --paper-faint: #8d8575;
  --bronze: #b08d57;
  --bronze-soft: #8a6f46;
  --bronze-line: rgba(176, 141, 87, 0.35);
  --hairline: rgba(243, 238, 228, 0.14);

  /* tipografia */
  --font-display: "Fraunces", "Iowan Old Style", serif;
  --font-body: "Work Sans", "Helvetica Neue", Arial, sans-serif;

  /* escala fluida */
  --fs-h1: clamp(2.5rem, 1.6rem + 3.6vw, 4.6rem);
  --fs-h2: clamp(1.9rem, 1.4rem + 2vw, 3rem);
  --fs-h3: clamp(1.25rem, 1.1rem + 0.6vw, 1.6rem);
  --fs-lead: clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-caption: 0.95rem;

  --content-max: 76rem;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --section-pad: clamp(4.5rem, 6vw, 8rem);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- reset base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4, p, figure { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--bronze); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--bronze);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- index line (eixo estrutural) ---------- */
.indexed {
  position: relative;
  padding-left: clamp(1.25rem, 2.6vw, 2.25rem);
  border-left: 1px solid var(--bronze-line);
}

/* ---------- tipografia ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 380;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.lede {
  font-size: var(--fs-lead);
  color: var(--paper-dim);
  font-weight: 400;
  max-width: 42ch;
}

.caption {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--fs-caption);
  color: var(--paper-dim);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: var(--bronze);
  font-weight: 500;
}

.plate-tag {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--bronze);
  letter-spacing: 0.02em;
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  background: linear-gradient(to bottom, rgba(27,25,22,0.92), rgba(27,25,22,0));
  backdrop-filter: blur(2px);
}

.wordmark {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-style: italic;
  letter-spacing: 0.01em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--bronze);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 500;
  background: transparent;
  cursor: pointer;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}

.btn:hover, .btn:focus-visible {
  background: var(--bronze);
  color: var(--ink);
}

.btn--header { padding: 0.55rem 1.1rem; font-size: 0.8rem; }

.btn--solid {
  background: var(--bronze);
  color: var(--ink);
}
.btn--solid:hover, .btn--solid:focus-visible {
  background: var(--paper);
  border-color: var(--paper);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding-block-start: clamp(7rem, 14vw, 10rem);
  padding-block-end: clamp(3rem, 8vw, 6rem);
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 2;
}

.hero__kicker {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: var(--bronze);
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.1s forwards;
}

.hero h1 {
  font-size: var(--fs-h1);
  line-height: 1.08;
  max-width: 16ch;
  opacity: 0;
  animation: rise 1s var(--ease) 0.25s forwards;
}

.hero__lede {
  margin-top: 1.75rem;
  opacity: 0;
  animation: rise 1s var(--ease) 0.45s forwards;
}

.hero__actions {
  margin-top: 2.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: rise 1s var(--ease) 0.6s forwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__plan {
  margin-top: clamp(3rem, 8vw, 6rem);
  opacity: 0.55;
  animation: fadein 1.4s var(--ease) 0.8s forwards;
}
@keyframes fadein { from { opacity: 0; } to { opacity: 0.55; } }

.hero__plan svg { width: 100%; height: auto; color: var(--bronze); }

/* ---------- manifesto ---------- */
.manifesto {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--hairline);
}

.manifesto blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 340;
  font-size: var(--fs-h2);
  line-height: 1.28;
  max-width: 22ch;
}

.manifesto__body {
  margin-top: 2.25rem;
  max-width: 62ch;
  color: var(--paper-dim);
}

.manifesto__body p + p { margin-top: 1.1rem; }

/* ---------- section heading shared ---------- */
.section-head {
  margin-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

.section-head h2 {
  font-size: var(--fs-h2);
  line-height: 1.18;
  max-width: 18ch;
}

.section-head .lede { margin-top: 1rem; }

/* ---------- pilares ---------- */
.pillars {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--hairline);
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.pillar {
  padding: 0 2rem;
  border-left: 1px solid var(--hairline);
}
.pillar:first-child { padding-left: 0; }
.pillar:last-child { border-right: 1px solid var(--hairline); }

.pillar__icon {
  width: 2.75rem;
  height: 2.75rem;
  color: var(--bronze);
  margin-bottom: 1.75rem;
}

.pillar h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 450;
  margin-bottom: 0.85rem;
}

.pillar p { color: var(--paper-dim); }

/* ---------- galerias de vídeo ---------- */
.gallery-section {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--hairline);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.25rem 1.75rem;
}

.video-grid--feature {
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: auto;
}
.video-grid--feature .video-card:first-child {
  grid-column: span 2;
  grid-row: span 2;
}

.video-card { display: flex; flex-direction: column; gap: 0.85rem; }

.video-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  background:
    repeating-linear-gradient(135deg, rgba(243,238,228,0.05) 0 1px, transparent 1px 13px),
    linear-gradient(160deg, var(--ink-3), var(--ink-2));
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
}

.video-frame .plate-tag {
  position: absolute;
  top: 0.9rem;
  left: 1rem;
}

.video-frame__play {
  width: 3.4rem;
  height: 3.4rem;
  border: 1px solid var(--bronze);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease);
}

.video-frame__play svg { width: 1rem; height: 1rem; color: var(--bronze); margin-left: 2px; }

.video-frame:hover .video-frame__play,
.video-frame:focus-visible .video-frame__play {
  transform: scale(1.08);
  background: var(--bronze);
}
.video-frame:hover .video-frame__play svg,
.video-frame:focus-visible .video-frame__play svg { color: var(--ink); }

.video-frame__hint {
  position: absolute;
  bottom: 0.9rem;
  right: 1rem;
  font-size: 0.7rem;
  color: var(--paper-faint);
}

.video-card figcaption { color: var(--paper-dim); }
.video-card figcaption strong { color: var(--paper); font-style: normal; font-weight: 500; }

/* ---------- metodologia (sequência real) ---------- */
.method {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--hairline);
}

.method__row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
  margin-top: 3rem;
}

.method__row::before {
  content: "";
  position: absolute;
  top: 0.65rem;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--hairline);
}

.step {
  padding-right: 1.75rem;
  position: relative;
}

.step__n {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--bronze);
  font-size: 1.1rem;
  background: var(--ink);
  display: inline-block;
  padding-right: 0.6rem;
  position: relative;
  z-index: 1;
}

.step h3 {
  margin-top: 1.25rem;
  font-family: var(--font-display);
  font-weight: 450;
  font-size: 1.2rem;
}

.step p {
  margin-top: 0.6rem;
  color: var(--paper-dim);
  font-size: 0.95rem;
}

/* ---------- cta / form ---------- */
.cta {
  padding-block: var(--section-pad);
  background: var(--ink-2);
  border-top: 1px solid var(--hairline);
}

.cta__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.cta__contacts {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  color: var(--paper-dim);
}

.cta__contacts a:hover { color: var(--bronze); }

.field {
  margin-bottom: 1.5rem;
}

.field label {
  display: block;
  font-size: var(--fs-small);
  color: var(--paper-dim);
  margin-bottom: 0.5rem;
}

.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--hairline);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.6rem 0.1rem;
  transition: border-color 0.3s var(--ease);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--paper-faint); }

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--bronze);
}

.field textarea { resize: vertical; min-height: 5rem; }

.form-note {
  margin-top: 1.25rem;
  font-size: var(--fs-small);
  color: var(--paper-faint);
}

.form-status {
  margin-top: 1.25rem;
  font-size: var(--fs-small);
  min-height: 1.2em;
}
.form-status[data-state="ok"] { color: var(--bronze); }
.form-status[data-state="err"] { color: #c98f6b; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding-block: 2.5rem;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--paper-faint);
  font-size: var(--fs-small);
}

.site-footer a:hover { color: var(--bronze); }

/* ---------- responsivo ---------- */
@media (max-width: 920px) {
  .pillars__grid { grid-template-columns: 1fr; row-gap: 2.5rem; }
  .pillar { border-left: none; padding-left: 0; border-top: 1px solid var(--hairline); padding-top: 2rem; }
  .pillar:first-child { border-top: none; padding-top: 0; }
  .pillar:last-child { border-right: none; }

  .video-grid, .video-grid--feature { grid-template-columns: 1fr 1fr; }
  .video-grid--feature .video-card:first-child { grid-column: span 2; grid-row: auto; }

  .method__row { grid-template-columns: 1fr 1fr; row-gap: 2.5rem; }

  .cta__grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .video-grid, .video-grid--feature { grid-template-columns: 1fr; }
  .video-grid--feature .video-card:first-child { grid-column: span 1; }
  .method__row { grid-template-columns: 1fr; }
  .hero h1 { max-width: 100%; }
}