/* ==========================================================================
   A CASA DO PORTO — hoja de estilos
   Estudio: Kosta · Proyecto conceptual de portfolio
   ========================================================================== */

:root {
  --cream: #efe9dc;
  --paper: #fbf8f2;
  --charcoal: #21201d;
  --charcoal-soft: #2b2925;
  --clay: #a9754f;
  --clay-deep: #8a5f3d;
  --pine: #2e3b2a;
  --ink: #3a362f;
  --ink-soft: #6b6459;
  --line: rgba(58, 54, 47, 0.16);
  --line-light: rgba(251, 248, 242, 0.28);

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

  --container: 1240px;
  --gutter: clamp(24px, 5vw, 72px);

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

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--charcoal);
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.italic { font-style: italic; font-weight: 400; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

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

.demo-flag {
  position: fixed;
  bottom: 14px;
  left: 14px;
  z-index: 500;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--paper);
  background: rgba(33, 32, 29, 0.82);
  padding: 6px 12px;
  border-radius: 3px;
  font-family: var(--font-body);
  pointer-events: none;
}

/* ---------- utility ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.btn-solid {
  background: var(--charcoal);
  color: var(--paper);
}
.btn-solid:hover { background: var(--pine); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-light);
}
.btn-ghost:hover { background: rgba(251,248,242,0.12); border-color: var(--paper); }

.btn-line {
  background: transparent;
  color: var(--charcoal);
  border-color: var(--charcoal);
}
.btn-line:hover { background: var(--charcoal); color: var(--paper); }

.btn-outline-light {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
}
.btn-outline-light:hover { background: var(--paper); color: var(--charcoal); }

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   HEADER
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: transparent;
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(239, 233, 220, 0.94);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 22px var(--gutter);
  display: flex;
  align-items: center;
  gap: 32px;
}

.wordmark {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--paper);
  letter-spacing: 0.01em;
  transition: color 0.4s var(--ease);
  margin-right: auto;
}

.site-header.is-scrolled .wordmark { color: var(--charcoal); }

.main-nav {
  display: flex;
  gap: 30px;
}

.main-nav a {
  font-size: 14px;
  color: rgba(251, 248, 242, 0.88);
  transition: color 0.4s var(--ease), opacity .3s;
  position: relative;
  padding-bottom: 3px;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}
.main-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.site-header.is-scrolled .main-nav a { color: var(--ink); }

.header-cta {
  padding: 10px 22px;
  font-size: 13.5px;
  color: var(--paper);
  border-color: var(--line-light);
}
.site-header.is-scrolled .header-cta {
  color: var(--charcoal);
  border-color: var(--charcoal);
}
.site-header.is-scrolled .header-cta:hover {
  background: var(--charcoal);
  color: var(--paper);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 210;
}
.menu-toggle span {
  width: 22px;
  height: 1.5px;
  background: var(--paper);
  transition: background-color 0.4s var(--ease), transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.site-header.is-scrolled .menu-toggle span { background: var(--charcoal); }
.menu-toggle.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.menu-toggle.is-open span { background: var(--charcoal); }

/* Corrección de la capa móvil oculta por defecto */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--cream);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 26px;
  padding: 0 var(--gutter);
  transform: translateY(-100%);
  transition: transform 0.5s var(--ease), visibility 0.5s var(--ease);
  z-index: 199;
  visibility: hidden;
  pointer-events: none;
}
.mobile-nav.is-open {
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 30px;
  color: var(--charcoal);
}
.mobile-nav .btn { margin-top: 12px; }

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,18,15,0.32) 0%, rgba(20,18,15,0.12) 38%, rgba(20,18,15,0.62) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--gutter) 120px;
  color: var(--paper);
}

.hero-kicker {
  font-size: 14px;
  letter-spacing: 0.02em;
  color: rgba(251,248,242,0.82);
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(42px, 7vw, 92px);
  max-width: 14ch;
}

.reveal-line {
  display: block;
  overflow: hidden;
}
.reveal-line span {
  display: block;
  transform: translateY(105%);
  animation: lineUp 0.9s var(--ease) forwards;
}
.reveal-line:nth-child(2) span { animation-delay: 0.14s; }

@keyframes lineUp {
  to { transform: translateY(0); }
}

.hero-sub {
  font-size: 18px;
  max-width: 34ch;
  margin-top: 22px;
  color: rgba(251,248,242,0.92);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.scroll-hint {
  position: absolute;
  right: var(--gutter);
  bottom: 40px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(251,248,242,0.85);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  writing-mode: vertical-rl;
}
.scroll-line {
  writing-mode: horizontal-tb;
  width: 1px;
  height: 46px;
  background: rgba(251,248,242,0.5);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: "";
  position: absolute;
  top: -100%; left: 0; right: 0;
  height: 100%;
  background: var(--paper);
  animation: scrollDrip 2.2s ease-in-out infinite;
}
@keyframes scrollDrip {
  0% { top: -100%; }
  50% { top: 0; }
  100% { top: 100%; }
}

/* ==========================================================================
   SECTION SHARED
   ========================================================================== */

main > section {
  padding: clamp(80px, 11vw, 150px) var(--gutter);
}

.section-head {
  max-width: var(--container);
  margin: 0 auto clamp(40px, 6vw, 72px);
}
.section-head h2 {
  font-size: clamp(32px, 4vw, 48px);
  max-width: 16ch;
}
.section-note {
  margin-top: 16px;
  max-width: 46ch;
  color: var(--ink-soft);
  font-size: 15.5px;
}

/* ==========================================================================
   INTRODUCCIÓN
   ========================================================================== */

.intro { background: var(--cream); }

.intro-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(32px, 6vw, 90px);
  align-items: center;
}

.intro-text h2 {
  font-size: clamp(34px, 4.6vw, 56px);
  margin-bottom: 26px;
}

.lead {
  font-size: 18px;
  color: var(--ink);
}
.intro-text p:not(.lead) {
  color: var(--ink-soft);
  font-size: 15.5px;
  max-width: 46ch;
}

.intro-image img {
  width: 100%;
  height: clamp(340px, 42vw, 560px);
  object-fit: cover;
  border-radius: 2px;
}

/* ==========================================================================
   CARTA
   ========================================================================== */

.carta { background: var(--paper); }

.carta-columns {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px 40px;
}

.carta-col h3 {
  font-size: 20px;
  font-weight: 500;
  padding-bottom: 14px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
  color: var(--clay-deep);
  font-style: italic;
}

.dish-list { list-style: none; margin: 0; padding: 0; }
.dish-list li { margin-bottom: 24px; }
.dish-list li:last-child { margin-bottom: 0; }

.dish-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.dish-name {
  font-family: var(--font-display);
  font-size: 16.5px;
  color: var(--charcoal);
}
.dish-dots {
  flex: 1;
  border-bottom: 1px dotted var(--line);
  transform: translateY(-4px);
}
.dish-price {
  font-size: 14.5px;
  color: var(--ink-soft);
  white-space: nowrap;
}
.dish-desc {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.carta-cta {
  max-width: var(--container);
  margin: 56px auto 0;
  display: flex;
  justify-content: center;
}

/* ==========================================================================
   EXPERIENCIA
   ========================================================================== */

.experiencia { background: var(--cream); }

.experiencia-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: end;
}

.exp-block { display: flex; flex-direction: column; }
.exp-block img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: 2px;
}
.exp-tall img { height: 440px; }
.exp-short img { height: 260px; }

.exp-caption { padding-top: 20px; }
.exp-caption h3 {
  font-size: 19px;
  font-weight: 500;
  margin-bottom: 10px;
}
.exp-caption p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* ==========================================================================
   GALERÍA
   ========================================================================== */

.galeria { background: var(--paper); }

.gallery-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 190px;
  gap: 14px;
}

.gallery-item {
  position: relative;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  overflow: hidden;
  border-radius: 2px;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.gallery-item:hover img { transform: scale(1.045); }

.gallery-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--charcoal);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.gallery-item:hover::after { opacity: 0.08; }

.g-wide { grid-column: span 2; grid-row: span 2; }
.g-tall { grid-row: span 2; }

/* ==========================================================================
   RESERVAS
   ========================================================================== */

.reservas { background: var(--charcoal); color: var(--paper); }

.reservas-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(40px, 6vw, 96px);
}

.reservas-info h2 {
  color: var(--paper);
  font-size: clamp(34px, 4.6vw, 54px);
  margin-bottom: 24px;
}
.reservas-info p { color: rgba(251,248,242,0.78); max-width: 40ch; }

.whatsapp-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 30px;
  font-size: 14.5px;
  color: var(--paper);
  border-bottom: 1px solid var(--line-light);
  padding-bottom: 4px;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}
.whatsapp-link:hover { border-color: var(--paper); }
.whatsapp-icon { color: #7fae7a; display: inline-flex; }

.reservas-form {
  background: var(--paper);
  padding: clamp(28px, 4vw, 48px);
  border-radius: 3px;
  color: var(--ink);
}

.form-row { margin-bottom: 20px; }
.form-row-half, .form-row-triple {
  display: grid;
  gap: 18px;
}
.form-row-half { grid-template-columns: 1fr 1fr; }
.form-row-triple { grid-template-columns: 1fr 1fr 1fr; }

label {
  display: block;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 7px;
}
.optional { font-style: italic; }

input, textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 9px 2px;
  transition: border-color 0.3s var(--ease);
}
input:focus, textarea:focus {
  border-color: var(--clay);
  outline: none;
}
textarea { resize: vertical; min-height: 80px; }

.form-submit { width: 100%; margin-top: 8px; }
.form-note {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--ink-soft);
  text-align: center;
}

.form-success {
  margin-top: 20px;
  padding: 16px 18px;
  background: rgba(46, 59, 42, 0.08);
  border-left: 2px solid var(--pine);
  font-size: 14px;
}

/* ==========================================================================
   UBICACIÓN
   ========================================================================== */

.ubicacion { background: var(--cream); }

.ubicacion-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}

.ubicacion-info h2 {
  font-size: clamp(32px, 4.4vw, 50px);
  margin-bottom: 32px;
}
.ubicacion-detail { margin-bottom: 26px; }
.detail-title {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--clay-deep);
  margin-bottom: 4px;
}
.ubicacion-detail p:not(.detail-title) { color: var(--ink); }

.ubicacion-map {
  width: 100%;
  height: clamp(360px, 34vw, 460px);
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.ubicacion-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: grayscale(0.15) contrast(1.02);
}

/* ==========================================================================
   CTA FINAL
   ========================================================================== */

.cta-final {
  background: var(--charcoal);
  color: var(--paper);
  text-align: center;
}
.cta-final-inner {
  max-width: 720px;
  margin: 0 auto;
}
.cta-final h2 {
  color: var(--paper);
  font-size: clamp(38px, 6vw, 64px);
  margin-bottom: 42px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background: var(--charcoal-soft);
  color: rgba(251,248,242,0.82);
  padding: 60px var(--gutter) 30px;
}

.footer-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line-light);
}

.footer-wordmark {
  color: var(--paper);
  font-size: 20px;
  margin-bottom: 10px;
}

.footer-links, .footer-legal {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}
.footer-links a:hover, .footer-legal a:hover { color: var(--paper); }

.footer-note {
  max-width: var(--container);
  margin: 22px auto 0;
  font-size: 12.5px;
  color: rgba(251,248,242,0.5);
  text-align: center;
}

/* ==========================================================================
   LIGHTBOX
   ========================================================================== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: rgba(15, 14, 12, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 2px;
}
.lightbox-close {
  position: absolute;
  top: 26px;
  right: 34px;
  background: none;
  border: none;
  color: var(--paper);
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 980px) {
  .main-nav, .header-cta { display: none; }
  .menu-toggle { display: flex; }

  .intro-grid { grid-template-columns: 1fr; }
  .intro-image { order: -1; }
  .intro-image img { height: 320px; }

  .carta-columns { grid-template-columns: repeat(2, 1fr); }

  .experiencia-grid { grid-template-columns: 1fr; gap: 40px; }
  .exp-block img, .exp-tall img, .exp-short img { height: 300px; }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 220px; }
  .g-wide { grid-column: span 2; }

  .reservas-grid, .ubicacion-grid { grid-template-columns: 1fr; }
  .reservas-info { margin-bottom: 8px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 560px) {
  .hero-content { padding-bottom: 90px; }
  .scroll-hint { display: none; }
  .form-row-half, .form-row-triple { grid-template-columns: 1fr; }
  .carta-columns { grid-template-columns: 1fr; gap: 40px; }
  .demo-flag { font-size: 10px; padding: 5px 10px; }
}