/* 
  Estudio B-II - Diseño de Interiores
  b-ii.com | Buenos Aires, Argentina
  Estilos Premium de Acentuación Orgánica y Minimalismo Cálido
*/

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

:root {
  /* Paleta de Colores Curada */
  --clr-bg-primary: #FAF8F5;    /* Arena suave / Lino */
  --clr-bg-secondary: #F3EFEA;  /* Arena medio */
  --clr-bg-dark: #1E1F21;       /* Carbón profundo */
  --clr-text-main: #2A2B2D;     /* Gris casi negro */
  --clr-text-muted: #5C5E62;    /* Gris piedra */
  --clr-text-light: #F4F1EC;    /* Lino claro para fondos oscuros */
  --clr-accent: #C5A880;        /* Oro satinado */
  --clr-accent-dark: #A88D65;   /* Oro oscuro */
  --clr-accent-olive: #6B7A6A;  /* Verde oliva apagado */
  
  /* Fuentes */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Outfit', sans-serif;
  
  /* Transiciones y Efectos */
  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.3s ease;
  
  /* Layout */
  --max-width: 1400px;
  --header-height: 90px;
}

/* Reset General */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--clr-bg-primary);
  color: var(--clr-text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.25;
}

p {
  font-weight: 300;
  color: var(--clr-text-muted);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

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

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--clr-bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--clr-accent);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--clr-accent-dark);
}

/* Botones Premium */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 0;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--clr-bg-dark);
  color: var(--clr-bg-primary);
}

.btn-primary:hover {
  background-color: var(--clr-accent);
  color: var(--clr-bg-dark);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--clr-bg-dark);
  color: var(--clr-bg-dark);
}

.btn-outline:hover {
  background-color: var(--clr-bg-dark);
  color: var(--clr-bg-primary);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--clr-accent);
  color: var(--clr-bg-dark);
}

.btn-accent:hover {
  background-color: var(--clr-bg-dark);
  color: var(--clr-bg-primary);
  transform: translateY(-2px);
}

/* Header & Navegación */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: var(--transition-smooth);
}

header.scrolled {
  background-color: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid rgba(197, 168, 128, 0.15);
  height: 80px;
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4%;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--clr-bg-dark);
  display: flex;
  align-items: center;
}

.logo span {
  color: var(--clr-accent);
  margin-left: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-item a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 400;
  color: var(--clr-text-main);
  position: relative;
  padding: 5px 0;
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--clr-accent);
  transition: var(--transition-fast);
}

.nav-item a:hover {
  color: var(--clr-accent);
}

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

.nav-cta {
  display: block;
}

/* Menu Toggle para Mobile */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--clr-bg-dark);
  transition: var(--transition-fast);
  transform-origin: left center;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 8%;
  color: var(--clr-bg-primary);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to right,
    rgba(30, 31, 33, 0.75) 0%,
    rgba(30, 31, 33, 0.4) 50%,
    rgba(30, 31, 33, 0.1) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 750px;
  transform: translateY(20px);
  animation: heroReveal 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes heroReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 20px;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: 25px;
  letter-spacing: -0.5px;
  line-height: 1.15;
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(244, 241, 236, 0.85);
  margin-bottom: 35px;
  max-width: 550px;
}

.hero-btns {
  display: flex;
  gap: 20px;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(244, 241, 236, 0.6);
  transition: var(--transition-fast);
}

.hero-scroll-indicator:hover {
  color: var(--clr-accent);
}

.scroll-line {
  width: 1px;
  height: 50px;
  background-color: rgba(244, 241, 236, 0.3);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 20px;
  background-color: var(--clr-accent);
  animation: scrollDown 2s infinite ease-in-out;
}

@keyframes scrollDown {
  0% { top: -20px; }
  100% { top: 50px; }
}

/* Secciones Comunes */
.section {
  padding: 140px 0;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 4%;
}

.section-tag {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--clr-accent-olive);
  font-weight: 500;
  display: block;
  margin-bottom: 15px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  color: var(--clr-bg-dark);
  margin-bottom: 50px;
  max-width: 800px;
}

.section-title span {
  font-style: italic;
  font-family: var(--font-serif);
}

/* Sección Filosofía (About) */
.philosophy-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.philosophy-text h3 {
  font-size: 1.8rem;
  color: var(--clr-bg-dark);
  margin-bottom: 20px;
}

.philosophy-text p {
  font-size: 1.05rem;
  margin-bottom: 30px;
}

.philosophy-quote {
  border-left: 2px solid var(--clr-accent);
  padding-left: 25px;
  margin: 40px 0;
}

.philosophy-quote p {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--clr-bg-dark);
  line-height: 1.4;
}

.philosophy-quote cite {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--clr-accent);
  display: block;
  margin-top: 10px;
}

.philosophy-image {
  position: relative;
  padding: 20px;
}

.philosophy-image img {
  border-radius: 4px;
  width: 100%;
  height: 500px;
  object-fit: cover;
  box-shadow: 0 30px 60px rgba(0,0,0,0.06);
}

.philosophy-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 120px;
  border-top: 1px solid var(--clr-accent);
  border-left: 1px solid var(--clr-accent);
  z-index: -1;
  pointer-events: none;
}

.philosophy-image::before {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 120px;
  height: 120px;
  border-bottom: 1px solid var(--clr-accent);
  border-right: 1px solid var(--clr-accent);
  z-index: -1;
  pointer-events: none;
}

/* Sección Proyectos (Portfolio) */
.projects {
  background-color: var(--clr-bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.project-card {
  position: relative;
  overflow: hidden;
  background-color: var(--clr-bg-dark);
}

.project-card.large {
  grid-column: span 2;
}

.project-img-wrapper {
  width: 100%;
  height: 480px;
  overflow: hidden;
  position: relative;
}

.project-card.large .project-img-wrapper {
  height: 600px;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to top,
    rgba(30, 31, 33, 0.9) 0%,
    rgba(30, 31, 33, 0.4) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 40px;
  opacity: 0.95;
  transition: var(--transition-smooth);
}

.project-info {
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

.project-meta {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 10px;
}

.project-title {
  font-size: 1.8rem;
  color: var(--clr-bg-primary);
  margin-bottom: 5px;
}

.project-location {
  font-size: 0.85rem;
  color: rgba(244, 241, 236, 0.7);
  font-weight: 300;
}

/* Hover Effects en Proyectos */
.project-card:hover img {
  transform: scale(1.05);
}

.project-card:hover .project-overlay {
  background: linear-gradient(
    to top,
    rgba(30, 31, 33, 0.95) 0%,
    rgba(30, 31, 33, 0.6) 60%,
    rgba(30, 31, 33, 0.2) 100%
  );
}

.project-card:hover .project-info {
  transform: translateY(0);
}

/* Sección Proceso */
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
  margin-top: 60px;
}

.step-card {
  position: relative;
  padding: 40px 30px;
  background-color: var(--clr-bg-primary);
  border: 1px solid rgba(197, 168, 128, 0.15);
  transition: var(--transition-smooth);
}

.step-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.03);
}

.step-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 400;
  color: rgba(197, 168, 128, 0.25);
  line-height: 1;
  margin-bottom: 25px;
  display: block;
}

.step-card h3 {
  font-size: 1.4rem;
  color: var(--clr-bg-dark);
  margin-bottom: 15px;
}

.step-card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Sección Contacto */
.contact {
  background-color: var(--clr-bg-dark);
  color: var(--clr-bg-primary);
  position: relative;
  overflow: hidden;
}

.contact::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(197, 168, 128, 0.05) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}

.contact .container {
  position: relative;
  z-index: 2;
}

.contact .section-title {
  color: var(--clr-bg-primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 80px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-item h4 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 10px;
  font-weight: 500;
}

.contact-item p, .contact-item a {
  font-size: 1.1rem;
  color: rgba(244, 241, 236, 0.8);
  font-weight: 300;
}

.contact-item a:hover {
  color: var(--clr-accent);
}

.social-links {
  display: flex;
  gap: 25px;
  margin-top: 40px;
}

.social-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(244, 241, 236, 0.6);
  position: relative;
  padding-bottom: 4px;
}

.social-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--clr-accent);
  transition: var(--transition-fast);
}

.social-link:hover {
  color: var(--clr-accent);
}

.social-link:hover::after {
  width: 100%;
}

/* Formulario Premium */
.contact-form {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 60px;
  position: relative;
}

.form-group {
  position: relative;
  margin-bottom: 45px;
}

.form-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(244, 241, 236, 0.2);
  padding: 10px 0;
  color: var(--clr-bg-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 300;
  transition: var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-bottom-color: var(--clr-accent);
}

.form-label {
  position: absolute;
  top: 10px;
  left: 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 300;
  color: rgba(244, 241, 236, 0.5);
  pointer-events: none;
  transition: var(--transition-smooth);
}

/* Efectos flotantes en inputs */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: -20px;
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--clr-accent);
}

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

/* Notificación de envío del Formulario */
.form-status {
  margin-top: 20px;
  font-size: 0.9rem;
  display: none;
}

.form-status.success {
  display: block;
  color: var(--clr-accent);
}

.form-status.error {
  display: block;
  color: #E2725B; /* Terracota para error, elegante */
}

/* Footer */
footer {
  background-color: #161718;
  color: rgba(244, 241, 236, 0.4);
  padding: 40px 0;
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 4%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: rgba(244, 241, 236, 0.8);
  font-weight: 500;
}

.footer-logo span {
  color: var(--clr-accent);
}

.footer-info {
  display: flex;
  gap: 30px;
}

/* Clases de Animación Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* Media Queries para Responsiveness */

@media (max-width: 1024px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  
  .philosophy-image img {
    height: 400px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  header.scrolled {
    height: 70px;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--clr-bg-primary);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 30px;
    padding: 60px 40px;
    box-shadow: -10px 0 30px rgba(0,0,0,0.05);
    transition: right 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1050;
  }
  
  .nav-menu.open {
    right: 0;
  }
  
  .nav-item a {
    font-size: 1.1rem;
  }
  
  .nav-cta {
    display: none; /* Ocultar CTA del nav en móvil */
  }
  
  /* Animación hamburguesa */
  .menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }
  
  .hero {
    padding: 0 5%;
  }
  
  .hero-btns {
    flex-direction: column;
    gap: 15px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-card.large {
    grid-column: span 1;
  }
  
  .project-img-wrapper, 
  .project-card.large .project-img-wrapper {
    height: 380px;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .contact-form {
    padding: 40px 20px;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}