/*
Theme Name: Ubuntu Studio
Theme URI: https://ubuntustudioarq.com
Author: Ubuntu Studio
Author URI: https://ubuntustudioarq.com
Description: Tema personalizado para Ubuntu Studio — Estudio de Arquitectura en Bogotá, Colombia.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
Text Domain: ubuntu-studio
Tags: architecture, portfolio, minimal, dark
*/

/* ─── TOKENS ─────────────────────────────────── */
:root {
  --c-black:  #1A1A1A;
  --c-dark:   #2A2A2A;
  --c-mid:    #6B6B6B;
  --c-light:  #E0E0E0;
  --c-white:  #FAFAF9;
  --c-gray:   #F5F5F4;

  --f-head: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --f-body: 'Playfair Display', Georgia, 'Times New Roman', serif;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --dur: 0.6s;
}

/* ─── RESET ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--c-white);
  color: var(--c-black);
  font-family: var(--f-head);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; object-fit: cover; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ─── NAVIGATION ─────────────────────────────── */
.us-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 72px;
  background: transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.us-nav.scrolled {
  background: var(--c-white);
  border-color: var(--c-light);
}
.us-nav--dark { background: var(--c-black); }
.us-nav--dark .us-nav__logo,
.us-nav--dark .us-nav__links a,
.us-nav--dark .us-nav__cta { color: var(--c-white); }
.us-nav--dark .us-nav__links a::after { background: var(--c-white); }
.us-nav--dark .us-nav__cta { border-color: rgba(250,250,249,0.4); }
.us-nav--dark .us-nav__cta:hover { background: var(--c-white); color: var(--c-black); }
.us-nav--dark .us-nav__hamburger span { background: var(--c-white); }

.us-nav__logo {
  font-family: var(--f-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-black);
  line-height: 1.2;
}
.us-nav__logo span { display: block; }

.us-nav__links {
  display: flex;
  gap: 40px;
  padding: 0;
}
.us-nav__links li { margin: 0; }
.us-nav__links a {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-black);
  position: relative;
  padding-bottom: 2px;
}
.us-nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--c-black);
  transition: width var(--dur) var(--ease);
}
.us-nav__links a:hover::after { width: 100%; }

.us-nav__cta {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--c-black);
  padding: 10px 24px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  color: var(--c-black);
  display: inline-block;
}
.us-nav__cta:hover { background: var(--c-black); color: var(--c-white); }

.us-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.us-nav__hamburger span {
  display: block;
  width: 24px; height: 1px;
  background: var(--c-black);
  transition: all 0.3s;
}

/* Mobile menu */
.us-mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--c-black);
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 80px 48px 48px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
  transition: all 0.5s var(--ease);
}
.us-mobile-menu.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.us-mobile-menu__close {
  position: absolute;
  top: 24px; right: 24px;
  font-size: 24px;
  color: var(--c-white);
  background: none; border: none;
  cursor: pointer;
  line-height: 1;
}
.us-mobile-menu__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  justify-content: center;
  padding: 0;
}
.us-mobile-menu__links li { margin: 0; }
.us-mobile-menu__links a {
  font-family: var(--f-head);
  font-size: clamp(32px, 8vw, 56px);
  font-weight: 300;
  color: var(--c-white);
  letter-spacing: -0.02em;
  line-height: 1.2;
  transition: color 0.3s;
  display: block;
}
.us-mobile-menu__links a:hover { color: var(--c-mid); }

/* ─── HERO ───────────────────────────────────── */
.us-hero {
  height: 100vh;
  min-height: 640px;
  background: var(--c-black);
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
  overflow: hidden;
}
.us-hero__left {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 80px 48px;
  z-index: 2;
}
.us-hero__eyebrow {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-mid);
  margin-bottom: 24px;
}
.us-hero__title {
  font-family: var(--f-head);
  font-size: clamp(56px, 7vw, 100px);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 0.95;
  color: var(--c-white);
  margin-bottom: 40px;
}
.us-hero__title em {
  font-family: var(--f-body);
  font-style: italic;
  font-weight: 400;
}
.us-hero__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mid);
  max-width: 360px;
  margin-bottom: 48px;
}
.us-hero__actions {
  display: flex;
  align-items: center;
  gap: 32px;
}
.us-hero__right {
  position: relative;
  overflow: hidden;
}
.us-hero__img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.6;
  transition: transform 8s ease;
}
.us-hero:hover .us-hero__img { transform: scale(1.03); }
.us-hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-mid);
}
.us-hero__scroll-line {
  width: 1px; height: 40px;
  background: var(--c-mid);
  animation: usScrollLine 2s ease-in-out infinite;
}
@keyframes usScrollLine {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.4); opacity: 0.4; }
}

/* ─── MARQUEE ────────────────────────────────── */
.us-marquee {
  background: var(--c-black);
  padding: 20px 0;
  overflow: hidden;
  border-top: 1px solid #333;
}
.us-marquee__track {
  display: flex;
  animation: usMarquee 20s linear infinite;
  width: max-content;
}
.us-marquee__item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 0 40px;
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-mid);
  white-space: nowrap;
}
.us-marquee__dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--c-mid);
  flex-shrink: 0;
  display: inline-block;
}
@keyframes usMarquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ─── BUTTONS ────────────────────────────────── */
.us-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--c-white);
  color: var(--c-black);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 16px 32px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  font-family: var(--f-head);
  border: none;
  cursor: pointer;
}
.us-btn-primary:hover { background: var(--c-light); color: var(--c-black); }
.us-btn-primary--dark {
  background: var(--c-black);
  color: var(--c-white);
}
.us-btn-primary--dark:hover { background: var(--c-dark); color: var(--c-white); }

.us-btn-text {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-mid);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.3s;
}
.us-btn-text:hover { color: var(--c-white); }

/* ─── SECTION BASE ───────────────────────────── */
.us-section { padding: 120px 48px; }
.us-section--dark { background: var(--c-black); }
.us-section--gray { background: var(--c-gray); }
.us-section--flush { padding-left: 0; padding-right: 0; padding-top: 80px; }

.us-section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 72px;
  gap: 32px;
}
.us-section__label {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-mid);
  margin-bottom: 16px;
}
.us-section__title {
  font-family: var(--f-head);
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.us-section--dark .us-section__title { color: var(--c-white); }
.us-section__title em {
  font-family: var(--f-body);
  font-style: italic;
}
.us-section__link {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  flex-shrink: 0;
  transition: opacity 0.3s;
  color: var(--c-black);
}
.us-section__link:hover { opacity: 0.6; }

/* ─── PROJECTS GRID ──────────────────────────── */
.us-projects__featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-bottom: 2px;
}
.us-projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.us-project-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--c-dark);
}
.us-project-card--tall { aspect-ratio: 4/5; }
.us-project-card--square { aspect-ratio: 1/1; }
.us-project-card__img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
  opacity: 0.85;
  display: block;
}
.us-project-card:hover .us-project-card__img { transform: scale(1.04); opacity: 0.7; }
.us-project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,26,26,0.85) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  transition: background var(--dur) var(--ease);
}
.us-project-card:hover .us-project-card__overlay {
  background: linear-gradient(to top, rgba(26,26,26,0.95) 0%, rgba(26,26,26,0.2) 55%);
}
.us-project-card__num { font-size: 11px; letter-spacing: 0.2em; color: var(--c-mid); margin-bottom: 8px; }
.us-project-card__name { font-family: var(--f-head); font-size: 20px; font-weight: 300; color: var(--c-white); letter-spacing: -0.01em; line-height: 1.2; margin-bottom: 4px; }
.us-project-card__cat { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--c-mid); }
.us-project-card__arrow {
  position: absolute; top: 24px; right: 24px;
  width: 40px; height: 40px;
  border: 1px solid rgba(250,250,249,0.3);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(8px);
  transition: all 0.4s var(--ease);
}
.us-project-card:hover .us-project-card__arrow { opacity: 1; transform: translateY(0); }

/* ─── PROJECTS LIST ──────────────────────────── */
.us-projects-list { border-top: 1px solid var(--c-light); }
.us-project-row {
  display: grid;
  grid-template-columns: 60px 1fr auto 120px;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--c-light);
  cursor: pointer;
  transition: padding var(--dur) var(--ease);
  position: relative;
  overflow: visible;
}
.us-project-row::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0; background: var(--c-black);
  transition: width var(--dur) var(--ease);
  z-index: 0;
}
.us-project-row:hover::before { width: 4px; }
.us-project-row:hover { padding-left: 16px; }
.us-project-row__num { font-size: 12px; letter-spacing: 0.1em; color: var(--c-mid); position: relative; z-index: 1; }
.us-project-row__name { font-family: var(--f-head); font-size: clamp(18px, 2.5vw, 28px); font-weight: 300; letter-spacing: -0.01em; position: relative; z-index: 1; }
.us-project-row__year { font-size: 12px; letter-spacing: 0.1em; color: var(--c-mid); position: relative; z-index: 1; }
.us-project-row__cat { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--c-mid); text-align: right; position: relative; z-index: 1; }
.us-project-row__thumb {
  position: absolute; right: 140px; top: 50%;
  transform: translateY(-50%) scale(0.9);
  width: 160px; height: 100px;
  overflow: hidden; opacity: 0; pointer-events: none;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
  z-index: 10;
}
.us-project-row:hover .us-project-row__thumb { opacity: 1; transform: translateY(-50%) scale(1); }
.us-project-row__thumb img { width: 100%; height: 100%; object-fit: cover; }

/* ─── ABOUT ──────────────────────────────────── */
.us-about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.us-about__img-wrap { position: relative; }
.us-about__img { aspect-ratio: 3/4; background-size: cover; background-position: center; background-color: var(--c-dark); }
.us-about__img-tag {
  position: absolute; bottom: -24px; right: -24px;
  background: var(--c-black); color: var(--c-white);
  padding: 24px 32px;
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
}
.us-about__img-tag strong { display: block; font-family: var(--f-head); font-size: 36px; font-weight: 300; letter-spacing: -0.02em; margin-bottom: 4px; }
.us-about__text { font-family: var(--f-body); font-size: 20px; line-height: 1.7; color: var(--c-black); margin-bottom: 32px; }
.us-about__text em { font-style: italic; color: var(--c-mid); }
.us-about__body { font-size: 15px; line-height: 1.8; color: var(--c-mid); margin-bottom: 48px; }
.us-about__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; border-top: 1px solid var(--c-light); padding-top: 40px; margin-top: 48px; }
.us-stat__num { font-family: var(--f-head); font-size: 40px; font-weight: 300; letter-spacing: -0.03em; margin-bottom: 4px; }
.us-stat__label { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--c-mid); }

/* ─── SERVICES ───────────────────────────────── */
.us-services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--c-light); }
.us-service-item { background: var(--c-white); padding: 48px 40px; transition: background var(--dur) var(--ease); }
.us-service-item:hover { background: var(--c-black); }
.us-service-item__num { font-size: 11px; letter-spacing: 0.2em; color: var(--c-mid); margin-bottom: 32px; display: flex; align-items: center; gap: 12px; }
.us-service-item__num::after { content: ''; flex: 1; height: 1px; background: var(--c-light); max-width: 40px; }
.us-service-item__title { font-family: var(--f-head); font-size: 22px; font-weight: 300; letter-spacing: -0.01em; margin-bottom: 16px; color: var(--c-black); transition: color var(--dur) var(--ease); }
.us-service-item:hover .us-service-item__title { color: var(--c-white); }
.us-service-item__text { font-size: 14px; line-height: 1.7; color: var(--c-mid); transition: color var(--dur) var(--ease); }
.us-service-item:hover .us-service-item__text { color: rgba(250,250,249,0.5); }
.us-service-item__arrow { margin-top: 40px; font-size: 20px; color: var(--c-light); transition: all var(--dur) var(--ease); display: block; }
.us-service-item:hover .us-service-item__arrow { color: var(--c-white); transform: translateX(4px); }

/* ─── PROCESS ────────────────────────────────── */
.us-process__steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px; counter-reset: step; }
.us-process-step { counter-increment: step; }
.us-process-step::before { content: '0' counter(step); display: block; font-size: 11px; letter-spacing: 0.25em; color: var(--c-mid); margin-bottom: 24px; }
.us-process-step__line { width: 40px; height: 1px; background: #333; margin-bottom: 24px; }
.us-process-step__title { font-family: var(--f-head); font-size: 18px; font-weight: 400; letter-spacing: -0.01em; color: var(--c-white); margin-bottom: 12px; }
.us-process-step__text { font-size: 14px; line-height: 1.7; color: var(--c-mid); }

/* ─── TESTIMONIAL ────────────────────────────── */
.us-testimonial { padding: 120px 48px; background: var(--c-black); text-align: center; }
.us-testimonial__quote { font-family: var(--f-body); font-style: italic; font-size: clamp(24px, 3vw, 40px); font-weight: 400; color: var(--c-white); line-height: 1.5; max-width: 860px; margin: 0 auto 48px; }
.us-testimonial__author { font-size: 11px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--c-mid); }

/* ─── CONTACT ────────────────────────────────── */
.us-contact { display: grid; grid-template-columns: 1fr 1fr; min-height: 600px; }
.us-contact__left { background: var(--c-black); padding: 80px 64px; display: flex; flex-direction: column; justify-content: space-between; }
.us-contact__title { font-family: var(--f-head); font-size: clamp(40px, 5vw, 72px); font-weight: 300; letter-spacing: -0.03em; line-height: 1; color: var(--c-white); }
.us-contact__title em { font-family: var(--f-body); font-style: italic; }
.us-contact__info { margin-top: 40px; }
.us-contact__info-item { margin-bottom: 24px; }
.us-contact__info-label { font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--c-mid); margin-bottom: 4px; }
.us-contact__info-value { font-size: 15px; color: var(--c-white); }
.us-contact__right { background: var(--c-gray); padding: 80px 64px; }
.us-form-group { margin-bottom: 32px; }
.us-form-label { display: block; font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--c-mid); margin-bottom: 8px; }
.us-form-input { width: 100%; background: transparent; border: none; border-bottom: 1px solid var(--c-light); padding: 12px 0; font-family: var(--f-head); font-size: 15px; color: var(--c-black); outline: none; transition: border-color 0.3s; }
.us-form-input:focus { border-color: var(--c-black); }
.us-form-input::placeholder { color: var(--c-light); }
textarea.us-form-input { resize: none; height: 80px; }
.us-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.us-form-submit { display: inline-flex; align-items: center; gap: 12px; background: var(--c-black); color: var(--c-white); border: none; font-family: var(--f-head); font-size: 12px; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase; padding: 18px 40px; cursor: pointer; transition: background 0.3s; }
.us-form-submit:hover { background: var(--c-dark); }

/* ─── FOOTER ─────────────────────────────────── */
.us-footer { background: var(--c-black); padding: 64px 48px 40px; border-top: 1px solid #333; }
.us-footer__top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 64px; margin-bottom: 64px; }
.us-footer__logo { font-family: var(--f-head); font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--c-white); line-height: 1.4; margin-bottom: 20px; }
.us-footer__tagline { font-family: var(--f-body); font-style: italic; font-size: 14px; color: var(--c-mid); line-height: 1.6; max-width: 240px; }
.us-footer__col-title { font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--c-mid); margin-bottom: 20px; }
.us-footer__links { display: flex; flex-direction: column; gap: 12px; padding: 0; }
.us-footer__links li { margin: 0; }
.us-footer__links a { font-size: 14px; color: rgba(250,250,249,0.6); transition: color 0.3s; }
.us-footer__links a:hover { color: var(--c-white); }
.us-footer__bottom { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid #333; padding-top: 32px; }
.us-footer__copy { font-size: 12px; color: var(--c-mid); }
.us-footer__socials { display: flex; gap: 24px; }
.us-footer__socials a { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--c-mid); transition: color 0.3s; }
.us-footer__socials a:hover { color: var(--c-white); }

/* ─── FADE IN ANIMATION ──────────────────────── */
.us-fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.us-fade-in.visible { opacity: 1; transform: translateY(0); }

/* ─── RESPONSIVE ─────────────────────────────── */
@media (max-width: 1024px) {
  .us-nav__links, .us-nav__cta { display: none; }
  .us-nav__hamburger { display: flex; }
  .us-hero { grid-template-columns: 1fr; }
  .us-hero__right { display: none; }
  .us-hero__left { padding: 80px 32px; }
  .us-projects__featured { grid-template-columns: 1fr; }
  .us-projects__grid { grid-template-columns: 1fr 1fr; }
  .us-about { grid-template-columns: 1fr; gap: 48px; }
  .us-about__img-tag { right: 16px; }
  .us-services__grid { grid-template-columns: 1fr 1fr; }
  .us-process__steps { grid-template-columns: 1fr 1fr; }
  .us-contact { grid-template-columns: 1fr; }
  .us-footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .us-section { padding: 80px 24px; }
  .us-nav { padding: 0 24px; }
  .us-hero__left { padding: 80px 24px; }
  .us-projects__grid { grid-template-columns: 1fr; }
  .us-services__grid { grid-template-columns: 1fr; }
  .us-process__steps { grid-template-columns: 1fr; }
  .us-footer__top { grid-template-columns: 1fr; gap: 40px; }
  .us-footer__bottom { flex-direction: column; gap: 16px; text-align: center; }
  .us-contact__left, .us-contact__right { padding: 60px 32px; }
  .us-project-row { grid-template-columns: 40px 1fr; }
  .us-project-row__year, .us-project-row__cat { display: none; }
  .us-testimonial { padding: 80px 24px; }
  .us-form-row { grid-template-columns: 1fr; }
}