/* ============================================================
   SESLA — Design System & Styles
   Estética editorial · Preto & Branco · Instalação de arte
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --black: #0a0a0a;
  --white: #f5f0eb;
  --gray-100: #e8e3de;
  --gray-200: #d0cbc6;
  --gray-400: #8a8580;
  --gray-600: #5a5550;
  --gray-800: #2a2520;

  /* Formadibilia color accents */
  --verde: #2d5a3d;
  --azul: #1a3a5c;

  --font-serif: "Cormorant Garamond", "Georgia", serif;
  --font-sans: "Inter", "Helvetica Neue", sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --space-2xl: 12rem;

  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-weight: 300;
  color: var(--white);
  background-color: var(--black);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: var(--white);
  color: var(--black);
}

a {
  color: var(--white);
  text-decoration: none;
  transition: opacity var(--transition);
}
a:hover {
  opacity: 0.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

strong {
  font-weight: 500;
}

/* --- Navigation --- */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  mix-blend-mode: difference;
  pointer-events: none;
}

#nav > * {
  pointer-events: auto;
}

.nav-logo img {
  width: 36px;
  height: 36px;
  filter: invert(1);
  transition: transform var(--transition);
}
.nav-logo:hover img {
  transform: rotate(-10deg) scale(1.1);
  opacity: 1;
}
.nav-logo:hover {
  opacity: 1;
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-links a {
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background: currentColor;
  transition: width var(--transition);
}

.nav-links a:hover {
  opacity: 1;
}

.nav-links a:hover::after {
  width: 100%;
}

/* --- Sections (General) --- */
.section {
  position: relative;
  min-height: 100vh;
  padding: var(--space-2xl) var(--space-md);
  display: flex;
  align-items: center;
}

.section-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(3rem, 8vw, 7rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.text-large {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  line-height: 1.5;
  font-weight: 300;
  margin-bottom: var(--space-md);
}

/* --- HERO / ABERTURA --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  overflow: hidden;
}

.hero-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif);
  font-size: clamp(20vw, 30vw, 40vw);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--gray-800);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-lg);
  padding: var(--space-md);
}

.hero-logo {
  width: clamp(100px, 15vw, 180px);
  height: auto;
  filter: invert(1);
  animation: logoFloat 6s ease-in-out infinite;
}

@keyframes logoFloat {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-8px) rotate(1deg);
  }
  66% {
    transform: translateY(4px) rotate(-0.5deg);
  }
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

.hero-title-accent {
  font-style: italic;
  font-weight: 300;
  color: var(--gray-200);
}

.hero-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--gray-400);
  min-height: 2em;
  max-width: 500px;
}

.hero-quote .cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--gray-400);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.hero-scroll-hint span {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray-600);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--gray-600), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scaleY(0.6);
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

/* --- SOBRE --- */
#sobre {
  background: var(--white);
  color: var(--black);
}

#sobre a {
  color: var(--black);
}

#sobre .section-label {
  color: var(--gray-400);
}

.sobre-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.sobre-main p {
  margin-bottom: var(--space-md);
}

.manifesto {
  border-left: 2px solid var(--black);
  padding-left: var(--space-md);
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.5;
  color: var(--gray-600);
}

/* --- FORMADIBILIA --- */
.section-formadibilia {
  background: var(--black);
  padding-bottom: var(--space-xl);
}

.formadibilia-poster {
  max-width: 600px;
  margin-bottom: var(--space-xl);
}

.formadibilia-poster img {
  width: 100%;
  border: 1px solid var(--gray-800);
  filter: grayscale(100%) contrast(1.1);
  transition: filter var(--transition-slow);
}

.formadibilia-poster:hover img {
  filter: grayscale(0%) contrast(1);
}

.formadibilia-intro {
  max-width: 800px;
  margin-bottom: var(--space-xl);
}

.color-block {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--gray-800);
}

.color-block:last-of-type {
  border-bottom: 1px solid var(--gray-800);
}

.color-block-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.color-swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1px solid var(--gray-600);
}

.color-swatch-multi {
  background: conic-gradient(
    #fff 0deg,
    #c0392b 90deg,
    #f1c40f 180deg,
    #fff 360deg
  );
}

.color-block h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: -0.01em;
}

.color-block p {
  max-width: 700px;
  color: var(--gray-200);
  line-height: 1.8;
}

/* Subtle color accents on hover */
.color-block[data-color="preto"]:hover {
  border-top-color: var(--white);
}
.color-block[data-color="verde"]:hover {
  border-top-color: var(--verde);
}
.color-block[data-color="verde"]:hover h3 {
  color: var(--verde);
}
.color-block[data-color="azul"]:hover {
  border-top-color: var(--azul);
}
.color-block[data-color="azul"]:hover h3 {
  color: var(--azul);
}

.formadibilia-format {
  margin-top: var(--space-xl);
}

.formadibilia-format h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.format-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.format-list li {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--gray-200);
  position: relative;
  padding-left: var(--space-md);
}

.format-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gray-600);
}

/* --- ESTRANGEIROS --- */
.section-estrangeiros {
  background: var(--white);
  color: var(--black);
}

.section-estrangeiros a {
  color: var(--black);
}
.section-estrangeiros .section-label {
  color: var(--gray-400);
}

.estrangeiros-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: start;
}

.estrangeiros-image img {
  width: 100%;
  filter: grayscale(100%) contrast(1.1);
  transition: filter var(--transition-slow);
}

.estrangeiros-image:hover img {
  filter: grayscale(0%) contrast(1);
}

.estrangeiros-text p {
  margin-bottom: var(--space-md);
}

.estrangeiros-details {
  background: var(--gray-100);
  padding: var(--space-md);
  margin: var(--space-md) 0;
  border-left: 3px solid var(--black);
}

.estrangeiros-details p {
  margin-bottom: var(--space-xs);
  font-size: 0.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--black);
  transition: all var(--transition);
}

.btn:hover {
  background: var(--black);
  color: var(--white);
  opacity: 1;
}

/* --- CONTACTO / FOOTER --- */
.section-contacto {
  background: var(--black);
  min-height: auto;
  padding: var(--space-xl) var(--space-md);
}

.contacto-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-xl);
  align-items: start;
  margin-bottom: var(--space-xl);
}

.contacto-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.contacto-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: var(--space-xs);
}

.contacto-item p {
  font-size: 0.95rem;
  line-height: 1.6;
}

.contacto-logos {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
}

.footer-logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer-logo {
  filter: invert(1);
  opacity: 0.6;
  transition: opacity var(--transition);
}

.footer-logo-item:hover .footer-logo {
  opacity: 1;
}

.footer-logo-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--gray-400);
  line-height: 1.5;
  max-width: 160px;
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-md);
}

.footer-bottom p {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gray-600);
}

/* --- Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal:nth-child(2) {
  transition-delay: 0.1s;
}
.reveal:nth-child(3) {
  transition-delay: 0.2s;
}
.reveal:nth-child(4) {
  transition-delay: 0.3s;
}
.reveal:nth-child(5) {
  transition-delay: 0.4s;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .section {
    padding: var(--space-xl) var(--space-sm);
  }

  .sobre-grid,
  .estrangeiros-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

  .contacto-info {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .nav-links {
    gap: var(--space-sm);
    font-size: 0.65rem;
  }
}

@media (max-width: 600px) {
  .section {
    padding: var(--space-lg) var(--space-sm);
    min-height: auto;
  }

  .hero {
    min-height: 100vh;
    min-height: 100dvh;
  }

  .section-title {
    font-size: clamp(2.2rem, 10vw, 4rem);
  }

  .hero-bg-text {
    font-size: 40vw;
  }

  .format-list {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .estrangeiros-grid {
    gap: var(--space-md);
  }

  .contacto-logos {
    justify-content: flex-start;
  }
}