/* ============================================================
   ELCANO 7 · BILBAO — Styles
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap');

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

:root {
  --bg:          #FAF8F5;
  --text:        #1A1A1A;
  --gold:        #C9A84C;
  --gold-dark:   #A8873A;
  --secondary:   #8C8C8C;
  --footer-bg:   #1A1A1A;
  --form-bg:     #F0EDE7;
  --border:      #D8D4CC;
  --placeholder: #E8E4DC;
  --error:       #B94040;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, sans-serif;

  --nav-h: 72px;
  --max-w: 1200px;
  --max-w-text: 800px;
  --max-w-form: 640px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 18px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* ── Utilities ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
}

.hidden {
  display: none !important;
}

/* ── Fade-in (Intersection Observer) ── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   NAVBAR
   ============================================================ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
  transition: box-shadow var(--transition);
}

nav.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: center;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--secondary);
  flex-shrink: 0;
}

.lang-btn {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--secondary);
  padding: 2px 4px;
  transition: color var(--transition);
}

.lang-btn.active {
  color: var(--gold);
  font-weight: 600;
}

.lang-btn:hover {
  color: var(--text);
}

.hamburger {
  display: none;
  font-size: 1.4rem;
  color: var(--text);
  padding: 4px;
  line-height: 1;
}

/* Mobile nav */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: rgba(250, 248, 245, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 24px 40px 32px;
  z-index: 999;
  border-bottom: 1px solid var(--border);
  flex-direction: column;
  gap: 0;
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
  padding: 14px 0;
  border-bottom: 1px solid rgba(201, 168, 76, 0.12);
  transition: color var(--transition);
}

.nav-mobile a:last-of-type {
  border-bottom: none;
}

.nav-mobile a:hover {
  color: var(--text);
}

.nav-mobile .lang-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 20px;
  font-size: 0.75rem;
  color: var(--secondary);
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#hero img.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

#hero .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.55) 0%,
    rgba(10, 10, 10, 0.45) 60%,
    rgba(10, 10, 10, 0.65) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 6px 16px;
  margin-bottom: 28px;
  font-family: var(--font-sans);
  font-weight: 500;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 700;
  letter-spacing: 0.25em;
  line-height: 1;
  margin-bottom: 20px;
}

.hero-content .hero-subtitle {
  font-size: clamp(0.875rem, 2vw, 1.05rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
}

.hero-gold-line {
  width: 40px;
  height: 1px;
  background: var(--gold);
  margin: 20px auto;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.6);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: opacity 0.4s ease;
}

.scroll-indicator.hidden-indicator {
  opacity: 0;
  pointer-events: none;
}

.scroll-arrow {
  animation: bounce 2s infinite;
  font-size: 1.4rem;
  color: rgba(255,255,255,0.7);
  line-height: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(7px); }
}

/* ============================================================
   INTRO
   ============================================================ */
#intro {
  padding: 100px 40px;
  text-align: center;
}

#intro .intro-inner {
  max-width: var(--max-w-text);
  margin: 0 auto;
}

#intro .eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}

#intro h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 400;
  line-height: 1.4;
  margin-bottom: 28px;
  font-style: italic;
}

#intro p {
  font-size: 1rem;
  color: var(--secondary);
  line-height: 1.85;
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
section {
  padding: 100px 0;
}

.section-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 24px;
}

.section-text {
  font-size: 1rem;
  color: var(--secondary);
  line-height: 1.9;
  max-width: 520px;
}

/* ============================================================
   UBICACION
   ============================================================ */
#ubicacion .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

#ubicacion .ubicacion-text {
  padding-right: 20px;
}

#ubicacion .ubicacion-img {
  position: relative;
  overflow: hidden;
}

#ubicacion .ubicacion-img img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

#ubicacion .ubicacion-img:hover img {
  transform: scale(1.03);
}

#ubicacion .ubicacion-img::before {
  content: '';
  position: absolute;
  inset: -8px;
  border: 1px solid rgba(201, 168, 76, 0.3);
  z-index: 1;
  pointer-events: none;
  transform: translate(8px, 8px);
}

/* ============================================================
   VIVIENDAS
   ============================================================ */
#viviendas {
  background: var(--bg);
}

#viviendas .viviendas-header {
  text-align: center;
  margin-bottom: 64px;
}

#viviendas .viviendas-header .section-text {
  max-width: 600px;
  margin: 0 auto;
}

.viviendas-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
}

/* Tarjeta residencia */
.residencia {
  background: #fff;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.residencia:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

/* Galería */
.galeria {
  position: relative;
  overflow: hidden;
  background: var(--placeholder);
  aspect-ratio: 4/3;
}

.galeria-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.5s ease;
  background: var(--placeholder);
}

.galeria-slide.active {
  opacity: 1;
}

.galeria-slide span {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--secondary);
  letter-spacing: 0.08em;
  font-style: italic;
}

.galeria-slide--plano {
  background: #fff;
  padding: 0;
}

.galeria-slide--plano img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.galeria-slide--plano img[src$=".png"] {
  object-fit: contain;
  padding: 12px;
  background: #f5f3ef;
}

.galeria-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 36px;
  height: 36px;
  background: rgba(250, 248, 245, 0.9);
  color: var(--text);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
  border: 1px solid rgba(201, 168, 76, 0.2);
}

.galeria-btn:hover {
  background: var(--gold);
  color: #fff;
}

.galeria-prev { left: 12px; }
.galeria-next { right: 12px; }

.galeria-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 10;
}

.galeria-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.6);
  cursor: pointer;
  transition: background var(--transition);
}

.galeria-dot.active {
  background: var(--gold);
  border-color: var(--gold);
}

/* Residencia info */
.residencia-info {
  padding: 32px 36px 40px;
}

.residencia-info h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.residencia-badge {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.caracteristicas {
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.caracteristicas li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 1rem;
  color: var(--secondary);
  line-height: 1.6;
}

.caracteristicas li::before {
  content: '◆';
  color: var(--gold);
  font-size: 0.45rem;
  flex-shrink: 0;
  margin-top: 5px;
}

.btn-cta {
  display: inline-block;
  padding: 13px 32px;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
}

.btn-cta:hover {
  background: var(--gold);
  color: #fff;
}

/* ============================================================
   EDIFICIO
   ============================================================ */
#edificio .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

#edificio .edificio-img {
  overflow: hidden;
  position: relative;
}

#edificio .edificio-img img {
  width: 100%;
  height: 560px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

#edificio .edificio-img:hover img {
  transform: scale(1.03);
}

.edificio-galeria {
  position: relative;
  overflow: hidden;
}

.edificio-slide {
  display: none;
}

.edificio-slide.active {
  display: block;
}

.edificio-galeria .galeria-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

#edificio .edificio-img::after {
  content: '';
  position: absolute;
  inset: -8px;
  border: 1px solid rgba(201, 168, 76, 0.3);
  z-index: 1;
  pointer-events: none;
  transform: translate(-8px, 8px);
}

#edificio .edificio-text {
  padding-left: 20px;
}

/* ============================================================
   FORMULARIO
   ============================================================ */
#contacto {
  background: var(--form-bg);
  padding: 100px 40px;
}

#contacto .form-header {
  text-align: center;
  max-width: var(--max-w-form);
  margin: 0 auto 56px;
}

#contact-form {
  max-width: var(--max-w-form);
  margin: 0 auto;
}

.form-group {
  position: relative;
  margin-bottom: 36px;
}

.form-group label {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 8px;
  transition: color var(--transition);
}

.form-group:focus-within label {
  color: var(--gold);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 10px 0 10px;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}

.form-group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238C8C8C' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 4px center;
  padding-right: 24px;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-bottom-color: var(--gold);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--border);
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 36px;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  border: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  accent-color: var(--gold);
  cursor: pointer;
  appearance: auto;
  -webkit-appearance: auto;
}

.checkbox-group label {
  font-size: 0.825rem;
  color: var(--secondary);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  line-height: 1.5;
  margin-bottom: 0;
}

.checkbox-group label a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-color: rgba(201, 168, 76, 0.4);
}

.checkbox-group label a:hover {
  text-decoration-color: var(--gold);
}

/* Error */
.form-error {
  display: block;
  font-size: 0.75rem;
  color: var(--error);
  margin-top: 6px;
  min-height: 18px;
  letter-spacing: 0.01em;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-bottom-color: var(--error);
}

.checkbox-group.has-error .form-error {
  display: block;
}

/* Submit */
.btn-submit {
  width: 100%;
  padding: 16px 32px;
  background: var(--gold);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: none;
  transition: background var(--transition), transform var(--transition);
  margin-top: 8px;
}

.btn-submit:hover {
  background: var(--gold-dark);
}

.btn-submit:active {
  transform: scale(0.99);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Success message */
#form-success {
  margin-top: 32px;
  padding: 28px 32px;
  border: 1px solid rgba(201, 168, 76, 0.3);
  background: rgba(201, 168, 76, 0.05);
  text-align: center;
}

#form-success p {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-style: italic;
  color: var(--text);
  line-height: 1.7;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--footer-bg);
  padding: 48px 40px;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #fff;
  margin-bottom: 12px;
}

.footer-divider {
  width: 32px;
  height: 1px;
  background: var(--gold);
  margin: 16px auto;
}

footer p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

footer a {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.06em;
  transition: color var(--transition);
}

footer a:hover {
  color: var(--gold);
}

/* ============================================================
   PRIVACY PAGE
   ============================================================ */
.privacy-page {
  padding: calc(var(--nav-h) + 60px) 40px 80px;
  max-width: 800px;
  margin: 0 auto;
}

.privacy-page h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.privacy-page .privacy-subtitle {
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 48px;
}

.privacy-page h2 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 36px 0 12px;
  color: var(--text);
}

.privacy-page p,
.privacy-page li {
  font-size: 0.9rem;
  color: var(--secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.privacy-page ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 12px;
}

.privacy-page a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-color: rgba(201, 168, 76, 0.4);
}

.privacy-page a:hover {
  text-decoration-color: var(--gold);
}

.privacy-lang-block { display: none; }
.privacy-lang-block.active { display: block; }

/* ============================================================
   RESPONSIVE — 1200px
   ============================================================ */
@media (max-width: 1200px) {
  .viviendas-grid {
    gap: 28px;
    padding: 0 32px;
  }

  #ubicacion .container,
  #edificio .container {
    gap: 56px;
  }
}

/* ============================================================
   RESPONSIVE — 768px
   ============================================================ */
@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .container { padding: 0 24px; }

  /* Nav */
  nav {
    padding: 0 24px;
  }

  .nav-links {
    display: none;
  }

  .lang-toggle {
    display: none;
  }

  .hamburger {
    display: block;
  }

  .nav-mobile {
    padding: 20px 24px 28px;
  }

  /* Sections */
  section { padding: 72px 0; }

  #intro { padding: 72px 24px; }

  /* Ubicacion */
  #ubicacion .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  #ubicacion .ubicacion-text {
    padding-right: 0;
  }

  #ubicacion .ubicacion-img img {
    height: 320px;
  }

  /* Viviendas */
  .viviendas-grid {
    grid-template-columns: 1fr;
    padding: 0 24px;
    gap: 40px;
  }

  /* Edificio */
  #edificio .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  #edificio .edificio-img {
    order: -1;
  }

  #edificio .edificio-img img {
    height: 300px;
  }

  #edificio .edificio-text {
    padding-left: 0;
  }

  /* Formulario */
  #contacto { padding: 72px 24px; }

  /* Footer */
  footer { padding: 40px 24px; }
}

/* ============================================================
   RESPONSIVE — 375px
   ============================================================ */
@media (max-width: 375px) {
  .hero-content h1 {
    font-size: 2.6rem;
    letter-spacing: 0.15em;
  }

  .hero-content .hero-subtitle {
    font-size: 0.75rem;
  }

  .residencia-info {
    padding: 24px 20px 28px;
  }

  .btn-cta {
    width: 100%;
    text-align: center;
  }
}