/* ==========================================
   ADC PROMOTORES — DESIGN SYSTEM
   ========================================== */

:root {
  --white:        #FFFFFF;
  --off-white:    #F7F6F3;
  --bg-light:     #F1F0ED;
  --black:        #080808;
  --dark:         #0F0F0E;
  --dark-2:       #1A1A18;

  --green:        #1C3829;
  --green-mid:    #2B5240;
  --green-light:  #3D7060;
  --green-accent: #4E8A72;
  --green-vivid:  #418F6D;

  --gray-100: #EEECEA;
  --gray-200: #DDDBD7;
  --gray-300: #C5C3BE;
  --gray-400: #A5A39E;
  --gray-500: #87857F;
  --gray-600: #686660;
  --gray-700: #484643;
  --gray-800: #2E2D2B;

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

  --container:         1280px;
  --container-pad:     2rem;

  --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  --t-fast:   200ms var(--ease-in-out);
  --t-base:   380ms var(--ease-in-out);
  --t-slow:   650ms var(--ease-in-out);
  --t-reveal: 900ms var(--ease-out);

  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.1);
  --shadow-lg:  0 24px 60px rgba(0,0,0,0.14);
  --shadow-xl:  0 40px 80px rgba(0,0,0,0.18);
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); color: var(--dark); background: var(--white); overflow-x: hidden; line-height: 1.6; }
img  { display: block; max-width: 100%; }
a    { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--off-white); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::selection { background: var(--green); color: var(--white); }

/* ---- CONTAINER ---- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ==========================================
   TYPOGRAPHY UTILITIES
   ========================================== */
.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green-mid);
  margin-bottom: 1.25rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 3.5vw, 3rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--dark);
  margin-bottom: 1.25rem;
}
.section-title em {
  font-style: italic;
  color: var(--green-mid);
}

.section-subtitle {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--gray-600);
  max-width: 540px;
}

.section-header {
  margin-bottom: 4rem;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all var(--t-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn--primary {
  background: var(--green);
  color: var(--white);
}
.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--green-mid);
  transform: translateX(-101%);
  transition: transform var(--t-slow);
  z-index: 0;
}
.btn--primary:hover::before { transform: translateX(0); }
.btn--primary > * { position: relative; z-index: 1; }
.btn--primary .btn-text { position: relative; z-index: 1; }

.btn--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.35);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

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

.btn--full { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  transition: gap var(--t-fast);
  margin-top: 1.5rem;
}
.link-arrow:hover { gap: 0.875rem; }

/* ==========================================
   SCROLL REVEAL
   ========================================== */
.reveal-up,
.reveal-fade,
.reveal-right {
  opacity: 0;
  will-change: opacity, transform;
  transition: opacity var(--t-reveal) var(--delay, 0s), transform var(--t-reveal) var(--delay, 0s);
}
.reveal-up    { transform: translateY(44px); }
.reveal-fade  { transform: translateY(22px); }
.reveal-right { transform: translateX(64px); }

.reveal-up.is-visible,
.reveal-fade.is-visible,
.reveal-right.is-visible {
  opacity: 1;
  transform: translate(0);
}

/* ==========================================
   HEADER
   ========================================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.75rem 0;
  transition: background var(--t-base), box-shadow var(--t-base), padding var(--t-base);
}
.header.scrolled {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.07);
  padding: 1.125rem 0;
}

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

.header__logo {
  display: flex;
  align-items: center;
}
.logo-img {
  height: 48px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  transition: filter var(--t-base), opacity var(--t-base);
}
.header.scrolled .logo-img {
  filter: brightness(0);
}
.logo-img--hero {
  height: 100px;
  filter: brightness(0) invert(1);
}
.logo-img--footer {
  height: 68px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.header__nav a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  transition: color var(--t-fast);
  position: relative;
}
.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--green-accent);
  transition: width var(--t-base);
}
.header__nav a:hover { color: var(--white); }
.header__nav a:hover::after { width: 100%; }
.header.scrolled .header__nav a { color: var(--gray-600); }
.header.scrolled .header__nav a:hover { color: var(--dark); }
.header.scrolled .header__nav a::after { background: var(--green); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 101;
}
.hamburger span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--white);
  transition: all var(--t-base);
}
.header.scrolled .hamburger span { background: var(--dark); }
.hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* MOBILE NAV */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--dark);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base);
}
.mobile-nav.active { opacity: 1; pointer-events: all; }
.mobile-nav nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}
.mobile-nav__link {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 400;
  color: var(--white);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-base), transform var(--t-base), color var(--t-fast);
}
.mobile-nav.active .mobile-nav__link { opacity: 1; transform: none; }
.mobile-nav.active .mobile-nav__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.active .mobile-nav__link:nth-child(2) { transition-delay: 0.18s; }
.mobile-nav.active .mobile-nav__link:nth-child(3) { transition-delay: 0.26s; }
.mobile-nav.active .mobile-nav__link:nth-child(4) { transition-delay: 0.34s; }
.mobile-nav__link:hover { color: var(--green-accent); }

/* ==========================================
   HERO
   ========================================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, #070E09 0%, #0C1E14 35%, #0A1810 65%, #060C08 100%);
  will-change: transform;
}
.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 72px 72px;
}
.hero__bg::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 55%; height: 100%;
  background: linear-gradient(135deg, transparent 35%, rgba(28, 56, 41, 0.18) 100%);
  clip-path: polygon(30% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}


.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 2.75rem;
  left: var(--container-pad);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  z-index: 2;
}
.scroll-line {
  width: 1px; height: 48px;
  background: rgba(255,255,255,0.15);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--green-accent);
  animation: scrollDrop 2s ease-in-out infinite;
}
@keyframes scrollDrop {
  0%   { top: -100%; }
  50%  { top: 0; }
  100% { top: 100%; }
}
.hero__scroll span {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}


/* ==========================================
   ABOUT
   ========================================== */
.about {
  padding: 5.5rem 0;
  background: var(--white);
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7rem;
  align-items: center;
}
.about__content { max-width: 520px; }
.about__text {
  font-size: 1.0625rem;
  line-height: 1.82;
  color: var(--gray-600);
  margin-bottom: 1.125rem;
}

.about__visual { position: relative; }
.about__image-frame { position: relative; }
.about__image-placeholder {
  aspect-ratio: 4/5;
  background: var(--green);
  position: relative;
  overflow: hidden;
}
.about__image-text {
  position: absolute;
  bottom: 2rem; left: 2rem;
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.35em;
  text-transform: uppercase;
}
.about__accent-block {
  position: absolute;
  bottom: -2.25rem; right: -2.25rem;
  width: 42%; height: 42%;
  background: var(--bg-light);
  z-index: -1;
}

/* ==========================================
   STATS
   ========================================== */
.stats {
  padding: 5rem 0;
  background: var(--dark);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-item {
  padding: 3rem 2.5rem;
  border-right: 1px solid rgba(255,255,255,0.07);
  position: relative;
}
.stat-item:last-child { border-right: none; }
.stat-item::before {
  content: '';
  position: absolute;
  top: 0; left: 2.5rem;
  width: 22px; height: 2px;
  background: var(--green-mid);
}
.stat-number {
  display: flex;
  align-items: baseline;
  gap: 0.2rem;
  margin-bottom: 0.625rem;
}
.counter {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 3.5vw, 3.375rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1;
}
.stat-sup {
  font-family: var(--font-serif);
  font-size: 1.625rem;
  color: var(--green-accent);
  font-weight: 400;
  line-height: 1;
}
.stat-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.375rem;
}
.stat-desc {
  font-size: 0.8125rem;
  color: var(--gray-500);
  line-height: 1.55;
}

/* ==========================================
   PROJECTS
   ========================================== */
.projects {
  padding: 5.5rem 0;
  background: var(--off-white);
}
.projects__grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr 1fr;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  align-items: start;
}
.project-card {
  background: var(--white);
  overflow: hidden;
  transition: transform var(--t-slow), box-shadow var(--t-slow), opacity var(--t-base);
}
.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}
.project-card__visual {
  background: var(--card-bg, #1C3829);
  aspect-ratio: 4/3;
  position: relative;
  overflow: hidden;
}
.project-card--featured .project-card__visual {
  aspect-ratio: 4/3;
}
.project-card__number {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-family: var(--font-serif);
  font-size: 0.875rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.1em;
  z-index: 2;
}

/* Architectural geo shapes */
.geo-tower, .geo-complex, .geo-horizontal {
  position: absolute;
  bottom: 12%;
  left: 50%;
  transform: translateX(-50%);
}
.geo-tower {
  width: 28%; height: 55%;
  border: 1px solid rgba(255,255,255,0.1);
}
.geo-tower::before {
  content: '';
  position: absolute;
  top: -22%; left: 12%; right: 12%;
  height: 22%;
  border: 1px solid rgba(255,255,255,0.08);
  border-bottom: none;
}
.geo-tower::after {
  content: '';
  position: absolute;
  inset: 12% 10%;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 11px,
    rgba(255,255,255,0.04) 11px, rgba(255,255,255,0.04) 12px
  );
}
.geo-complex {
  width: 68%; height: 48%;
}
.geo-complex::before {
  content: '';
  position: absolute;
  bottom: 0; left: 8%; width: 32%; height: 88%;
  border: 1px solid rgba(255,255,255,0.1);
}
.geo-complex::after {
  content: '';
  position: absolute;
  bottom: 0; right: 8%; width: 42%; height: 68%;
  border: 1px solid rgba(255,255,255,0.1);
}
.geo-horizontal {
  width: 62%; height: 32%;
  border: 1px solid rgba(255,255,255,0.1);
}
.geo-horizontal::before {
  content: '';
  position: absolute;
  top: -32%; left: 18%; right: 18%;
  height: 32%;
  border: 1px solid rgba(255,255,255,0.07);
  border-bottom: none;
}

.project-card__info { padding: 2rem; }
.project-card__type {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green-mid);
  margin-bottom: 0.625rem;
}
.project-card__title {
  font-family: var(--font-serif);
  font-size: 1.3125rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 0.625rem;
  line-height: 1.28;
}
.project-card__desc {
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--gray-500);
  margin-bottom: 0.875rem;
}
.project-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.375rem;
  font-size: 0.8rem;
  color: var(--gray-400);
}

.projects__footer { text-align: center; }


/* ==========================================
   PHILOSOPHY
   ========================================== */
.philosophy {
  padding: 5.5rem 0;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.philosophy::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 56px 56px;
}
.philosophy__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.philosophy__content {
  max-width: 100%;
}
.philosophy__quote {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.875rem);
  font-weight: 400;
  line-height: 1.4;
  color: var(--white);
  margin-bottom: 2.5rem;
  font-style: normal;
}
.philosophy__quote em {
  font-style: italic;
  color: var(--green-accent);
}
.philosophy__text {
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(255,255,255,0.45);
  max-width: 580px;
}
.philosophy__visual { position: relative; }
.philosophy__frame {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}
.philosophy__accent {
  position: absolute;
  bottom: -2.25rem; right: -2.25rem;
  width: 42%; height: 42%;
  background: var(--bg-light);
  z-index: -1;
}

/* ==========================================
   PROCESS
   ========================================== */
.process {
  padding: 5rem 0;
  background: var(--gray-100);
}
.activity-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.activity-card {
  grid-column: span 2;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 2rem 2rem 2.25rem;
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
}
.activity-card:nth-child(4) { grid-column: 1 / 4; }
.activity-card:nth-child(5) { grid-column: 4 / 7; }
.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.activity-icon {
  width: 48px;
  height: 48px;
  color: var(--green-mid);
  margin-bottom: 1rem;
}
.activity-line {
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, var(--green-accent), var(--green-mid));
  border-radius: 2px;
  margin-bottom: 1.25rem;
}
.activity-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dark);
  margin-bottom: 0.75rem;
}
.activity-desc {
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--gray-600);
}

/* ==========================================
   CONTACT
   ========================================== */
.contact {
  padding: 5.5rem 0;
  background: var(--off-white);
}
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 6.5rem;
  align-items: start;
}
.contact__text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--gray-600);
  margin-bottom: 3rem;
}
.contact__details {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.contact-detail__label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green-mid);
  margin-bottom: 0.375rem;
}
.contact-detail__value {
  font-size: 0.9375rem;
  color: var(--dark);
  line-height: 1.65;
}

.form {
  background: var(--white);
  padding: 3rem;
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form__group { margin-bottom: 1.375rem; }
.form__label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-bottom: 0.5rem;
}
.form__input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--gray-200);
  background: var(--white);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--dark);
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}
.form__input::placeholder { color: var(--gray-400); }
.form__input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(28, 56, 41, 0.07);
}
.form__select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='7' viewBox='0 0 12 7' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23878580' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}
.form__textarea { resize: vertical; min-height: 120px; }

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  padding: 5.5rem 0 2.5rem;
  background: var(--dark);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 6rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 2.25rem;
}
.footer__logo {
  display: flex;
  align-items: center;
  margin-bottom: 1.375rem;
}
.footer__tagline {
  font-size: 0.9rem;
  line-height: 1.72;
  color: rgba(255,255,255,0.38);
  max-width: 270px;
}
.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer__nav-title {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.38);
  margin-bottom: 1.375rem;
}
.footer__nav-group {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}
.footer__nav-group a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--t-fast);
}
.footer__nav-group a:hover { color: var(--white); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer__bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.28);
}
.footer__legal {
  display: flex;
  gap: 2rem;
}
.footer__legal a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.28);
  transition: color var(--t-fast);
}
.footer__legal a:hover { color: rgba(255,255,255,0.65); }
.footer__bottom-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.footer__social {
  display: flex;
  gap: 0.625rem;
}
.footer__social a {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  color: rgba(255,255,255,0.55);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.footer__social a:hover {
  color: var(--white);
  border-color: var(--green-accent);
  background: rgba(255,255,255,0.05);
}

/* ==========================================
   LANG TOGGLE
   ========================================== */
.header__right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 1.75rem;
}
.lang-sep {
  font-size: 0.625rem;
  color: rgba(255,255,255,0.25);
  transition: color var(--t-base);
  padding: 0 0.1rem;
  user-select: none;
}
.header.scrolled .lang-sep { color: var(--gray-300); }

.lang-btn {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem 0.2rem;
  transition: color var(--t-fast);
  line-height: 1;
}
.lang-btn:hover       { color: var(--white); }
.lang-btn.is-active   { color: var(--white); }
.header.scrolled .lang-btn          { color: var(--gray-400); }
.header.scrolled .lang-btn:hover    { color: var(--dark); }
.header.scrolled .lang-btn.is-active { color: var(--dark); font-weight: 600; }

/* Mobile nav lang */
.mobile-nav__lang {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  color: rgba(255,255,255,0.3);
  font-size: 0.75rem;
}
.mobile-lang-btn {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--t-fast);
}
.mobile-lang-btn:hover     { color: var(--white); }
.mobile-lang-btn.is-active { color: var(--white); font-weight: 600; }

/* ==========================================
   WHATSAPP BUTTON
   ========================================== */
.whatsapp-btn {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 56px;
  height: 56px;
  background: #25D366;
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 51;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.38);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
  text-decoration: none;
}
.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.55);
}
.whatsapp-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #25D366;
  animation: waPulse 2.8s ease-out infinite;
  z-index: -1;
}
@keyframes waPulse {
  0%   { transform: scale(1); opacity: 0.5; }
  70%  { transform: scale(1.55); opacity: 0; }
  100% { transform: scale(1.55); opacity: 0; }
}
.wa-tooltip {
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  background: var(--dark);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
  padding: 0.375rem 0.75rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast), transform var(--t-fast);
  transform: translateY(-50%) translateX(6px);
}
.wa-tooltip::after {
  content: '';
  position: absolute;
  top: 50%; left: 100%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--dark);
}
.whatsapp-btn:hover .wa-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* ==========================================
   BACK TO TOP
   ========================================== */
.back-to-top {
  position: fixed;
  bottom: 5.5rem;
  right: 1.75rem;
  width: 44px; height: 44px;
  background: var(--green);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--t-base), transform var(--t-base), background var(--t-fast);
  pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: none; pointer-events: all; }
.back-to-top:hover { background: var(--green-mid); }

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1100px) {
  :root { --container-pad: 1.5rem; }
  .about__grid  { gap: 4rem; }
  .contact__grid { gap: 4rem; }
  .footer__top  { gap: 4rem; }
  .stats__grid  { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(1),
  .stat-item:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,0.07); }
  .stat-item:nth-child(3),
  .stat-item:nth-child(4) { border-bottom: none; }
}

@media (max-width: 960px) {
  .hamburger { display: flex; }
  .header__nav { display: none; }
  .lang-toggle { display: none; }

  .about__grid { grid-template-columns: 1fr; gap: 3rem; }
  .about__content { max-width: 100%; }
  .about__accent-block { display: none; }

  .philosophy__grid { grid-template-columns: 1fr; gap: 3rem; }
  .philosophy__accent { display: none; }

  .projects__grid { grid-template-columns: 1fr; max-width: 520px; }
  .project-card--featured .project-card__visual { aspect-ratio: 4/3; }

  .activity-grid { grid-template-columns: repeat(2, 1fr); }
  .activity-card { grid-column: span 1 !important; }

  .contact__grid { grid-template-columns: 1fr; gap: 3rem; }
  .footer__top  { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
  .about, .stats, .projects,
  .philosophy, .process,
  .contact { padding: 6rem 0; }

  .form__row { grid-template-columns: 1fr; }
  .form { padding: 2rem; }

  .footer__nav { grid-template-columns: repeat(2, 1fr); }
  .footer__bottom { flex-direction: column; gap: 1rem; align-items: flex-start; }
}

@media (max-width: 580px) {
  :root { --container-pad: 1.25rem; }

  .activity-grid { grid-template-columns: 1fr; }
  .activity-card { grid-column: span 1 !important; }

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

  .hero__cta { flex-direction: column; }
  .btn { justify-content: center; }

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

/* ==========================================
   SHARED SUB-PAGE ELEMENTS
   ========================================== */
body.page-catalog,
body.page-detail { padding-top: 0; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
}
.breadcrumb__link { transition: color var(--t-fast); }
.breadcrumb__link:hover { color: var(--dark); }
.breadcrumb__sep { color: var(--gray-300); }

.nav-current { color: var(--green) !important; }

/* ==========================================
   CATALOG HERO
   ========================================== */
.cat-hero {
  position: relative;
  padding: 9rem 0 5rem;
  overflow: hidden;
  background: var(--dark);
}
.cat-hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, #070E09 0%, #0C1E14 50%, #060C08 100%);
}
.cat-hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 72px 72px;
}
.cat-hero__inner {
  position: relative;
  z-index: 1;
}
.cat-hero .breadcrumb { color: rgba(255,255,255,0.4); }
.cat-hero .breadcrumb__link { color: rgba(255,255,255,0.55); }
.cat-hero .breadcrumb__link:hover { color: var(--white); }
.cat-hero .breadcrumb__sep { color: rgba(255,255,255,0.25); }
.cat-hero .breadcrumb__current { color: rgba(255,255,255,0.7); }
.cat-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.cat-hero__title em {
  font-style: italic;
  color: var(--green-vivid);
}
.cat-hero__subtitle {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.5);
  max-width: 480px;
  font-weight: 300;
}

/* ==========================================
   CATALOG FILTERS
   ========================================== */
.cat-filters {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 90;
}
.cat-filters__inner {
  max-width: 1800px;
  margin: 0 auto;
  padding: 0 1.25rem;
}
.filter-groups {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  flex-wrap: nowrap;
  padding: 0.875rem 0;
  min-height: 64px;
  box-sizing: border-box;
}
.filter-group,
.filter-pills,
.cat-count {
  flex-shrink: 0;
}
.filter-pills { flex-wrap: nowrap; gap: 0.3rem; }
.filter-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.filter-label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-500);
  white-space: nowrap;
}
.filter-pills {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  flex-wrap: wrap;
}
.filter-pill {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--gray-600);
  background: transparent;
  border: 1px solid var(--gray-200);
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
}
.filter-pill:hover {
  border-color: var(--green);
  color: var(--green);
}
.filter-pill.is-active {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}
.cat-count {
  font-size: 0.8125rem;
  color: var(--gray-500);
  white-space: nowrap;
  font-weight: 400;
}
.cat-count span {
  font-weight: 600;
  color: var(--dark);
}

/* ==========================================
   CATALOG MAIN + GRID
   ========================================== */
.cat-main {
  padding: 4rem 0 8rem;
  background: var(--off-white);
}
.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.proj-grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ==========================================
   PROJECT CARD
   ========================================== */
.proj-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--t-slow), box-shadow var(--t-slow);
  position: relative;
}
.proj-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 3px;
  background: var(--green);
  transition: width var(--t-base);
}
.proj-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.proj-card:hover::after { width: 100%; }
.proj-card--hidden { display: none !important; }

.proj-card__img-wrap {
  aspect-ratio: 4/3;
  position: relative;
  overflow: hidden;
}
.proj-card__img {
  width: 100%; height: 100%;
  position: relative;
  transition: transform 0.75s var(--ease-out);
}
.proj-card:hover .proj-card__img { transform: scale(1.06); }

.proj-card__img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.45) 0%, transparent 55%);
}
.proj-card__img > * { position: relative; z-index: 1; }
.proj-card__img .geo-tower,
.proj-card__img .geo-complex,
.proj-card__img .geo-horizontal,
.proj-card__img .geo-flat {
  position: absolute;
  bottom: 12%; left: 50%;
  transform: translateX(-50%);
}

.proj-card__badge {
  position: absolute;
  top: 1.125rem; left: 1.125rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  z-index: 3;
}
.proj-card__num {
  position: absolute;
  top: 1.125rem; right: 1.125rem;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.08em;
  z-index: 3;
}

/* Badge variants */
.badge--en-venta      { background: var(--green);       color: rgba(255,255,255,0.95); }
.badge--proximamente  { background: #3D2800;             color: #F0C060; }
.badge--en-desarrollo { background: #0E1E34;             color: #7AAED4; }
.badge--entregado     { background: rgba(20,20,20,0.75); color: rgba(255,255,255,0.65); }

.proj-card__body { padding: 1.625rem; flex: 1; display: flex; flex-direction: column; }
.proj-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.625rem;
}
.proj-card__type {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green-mid);
}
.proj-card__loc {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  color: var(--gray-500);
}
.proj-card__loc svg { flex-shrink: 0; color: var(--gray-400); }
.proj-card__name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}
.proj-card__specs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-bottom: 1rem;
}
.spec-sep { color: var(--gray-300); }
.proj-card__cta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  margin-top: auto;
  transition: gap var(--t-fast);
}
.proj-card:hover .proj-card__cta { gap: 0.75rem; }

/* Geo flat shape (new) */
.geo-flat {
  position: absolute;
  bottom: 18%; left: 50%;
  transform: translateX(-50%);
  width: 60%; height: 22%;
  border: 1px solid rgba(255,255,255,0.1);
}
.geo-flat::before {
  content: '';
  position: absolute;
  top: -70%; left: 15%; right: 15%;
  height: 70%;
  border: 1px solid rgba(255,255,255,0.08);
  border-bottom: none;
}
.geo-flat::after {
  content: '';
  position: absolute;
  inset: 20% 8%;
  background: repeating-linear-gradient(
    90deg, transparent, transparent 14px,
    rgba(255,255,255,0.04) 14px, rgba(255,255,255,0.04) 15px
  );
}

/* Empty state */
.cat-empty {
  text-align: center;
  padding: 6rem 2rem;
}
.cat-empty__icon { color: var(--gray-300); margin: 0 auto 1.5rem; width: fit-content; }
.cat-empty__text { font-size: 1rem; color: var(--gray-500); margin-bottom: 2rem; }

/* ==========================================
   DETAIL HERO
   ========================================== */
.det-hero {
  position: relative;
  height: 70vh;
  min-height: 520px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.det-hero__bg {
  position: absolute;
  inset: 0;
  transition: transform 0.1s linear;
}
.det-hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
}
.det-hero__geo { position: absolute; inset: 0; pointer-events: none; }
.det-hero__geo > * { position: absolute; bottom: 20%; left: 50%; transform: translateX(-50%); }
.det-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 60%);
}
.det-hero__inner {
  position: relative;
  z-index: 2;
  padding-bottom: 3.5rem;
  width: 100%;
}
.det-hero__badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  margin-bottom: 1rem;
}
.det-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.det-hero__meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.det-hero__type {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
}
.det-hero__loc {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.6);
}

/* ==========================================
   DETAIL MAIN
   ========================================== */
.det-main {
  padding: 5rem 0 8rem;
  background: var(--off-white);
}
.legal-main {
  padding: 5rem 0 8rem;
  background: var(--off-white);
}
.legal-content {
  max-width: 780px;
}
.det-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 4rem;
  align-items: start;
  margin-bottom: 1.5rem;
}
.det-block { margin-bottom: 3.5rem; }
.det-block .section-label { margin-bottom: 1.25rem; }
.det-text {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--gray-600);
  margin-bottom: 1rem;
}

/* Gallery */
.det-gallery__main { margin-bottom: 0.75rem; }
.det-gallery__img {
  width: 100%;
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.det-gallery__img::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
}
.det-gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
.det-gallery__thumb {
  width: 100%;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: opacity var(--t-fast);
}
.det-gallery__thumb:hover { opacity: 0.8; }

/* Amenities */
.det-amenities {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 2rem;
  list-style: none;
}
.det-amenity {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9rem;
  color: var(--gray-700);
  line-height: 1.5;
}
.det-amenity svg { color: var(--green); flex-shrink: 0; margin-top: 2px; }

/* Sidebar */
.det-sidebar__card {
  background: var(--white);
  padding: 2.25rem;
  position: sticky;
  top: 88px;
}
.det-sidebar__badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  margin-bottom: 1.75rem;
}
.det-kv-list { margin-bottom: 1.75rem; }
.det-kv {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gray-100);
  gap: 1rem;
}
.det-kv:first-child { border-top: 1px solid var(--gray-100); }
.det-kv__label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
  flex-shrink: 0;
}
.det-kv__value {
  font-size: 0.9rem;
  color: var(--dark);
  font-weight: 500;
  text-align: right;
}
.det-price {
  padding: 1.25rem;
  background: var(--off-white);
  margin-bottom: 0.25rem;
}
.det-price__label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 0.375rem;
}
.det-price__value {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--green);
}
.btn-wa-contact {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.75rem;
  background: #25D366;
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: background var(--t-fast), transform var(--t-fast);
}
.btn-wa-contact:hover { background: #1fba5a; transform: translateY(-1px); }

.btn-website-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.75rem;
  border: 1px solid var(--gray-300);
  color: var(--dark);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: 4px;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}
.btn-website-link:hover {
  border-color: var(--green-accent);
  color: var(--green-accent);
  background: rgba(78,138,114,0.05);
}

/* Related */
.det-related { margin-top: 1rem; }

/* ==========================================
   CATALOG + DETAIL RESPONSIVE
   ========================================== */
@media (max-width: 1100px) {
  .det-grid { grid-template-columns: 1fr 320px; gap: 3rem; }
}

@media (max-width: 960px) {
  .proj-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .filter-groups { flex-direction: column; align-items: flex-start; gap: 0.75rem; min-height: 0; justify-content: flex-start; }
  .filter-pills { flex-wrap: wrap; }
  .det-grid { grid-template-columns: 1fr; gap: 2rem; }
  .det-sidebar__card { position: static; }
  .det-amenities { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .proj-grid { grid-template-columns: 1fr; max-width: 480px; }
  .proj-grid--3 { grid-template-columns: 1fr; }
  .det-gallery__thumbs { grid-template-columns: repeat(3, 1fr); }
  .cat-hero { padding: 8rem 0 3.5rem; }
}