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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Montserrat", sans-serif;
  background: #111;
  color: #fff;
  overflow-x: hidden;
}

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

button {
  font-family: inherit;
}

:root {
  --project-bg: #090a0c;
  --project-bg-2: #0e1013;
  --project-card: #111317;

  --project-gold: #b99a5b;
  --project-gold-light: #d8bd7c;

  --project-white: #f5f5f5;
  --project-gray: #9a9da3;

  --project-border: rgba(255, 255, 255, 0.09);

  --project-transition: cubic-bezier(0.16, 1, 0.3, 1);
}

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

.projects-hero {
  position: relative;

  min-height: 92vh;

  display: flex;
  align-items: center;

  overflow: hidden;

  background: #08090a;
}

/* imagen */

.projects-hero-bg {
  position: absolute;
  inset: 0;

  background-image:
    linear-gradient(
      90deg,
      rgba(5, 6, 7, 0.94) 0%,
      rgba(5, 6, 7, 0.82) 40%,
      rgba(5, 6, 7, 0.38) 75%,
      rgba(5, 6, 7, 0.7) 100%
    ),
    url("./assets/img/stalynp_group_diseño (1).webp");

  background-size: cover;
  background-position: center;

  transform: scale(1.05);

  animation: heroZoom 12s var(--project-transition) forwards;
}

@keyframes heroZoom {
  from {
    transform: scale(1.12);
  }

  to {
    transform: scale(1);
  }
}

/* grid */

.hero-grid {
  position: absolute;
  inset: 0;

  opacity: 0.15;

  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);

  background-size: 90px 90px;

  mask-image: linear-gradient(90deg, #000, transparent 85%);
}

/* luces */

.hero-glow {
  position: absolute;

  width: 400px;
  height: 400px;

  border-radius: 50%;

  filter: blur(100px);

  opacity: 0.08;

  pointer-events: none;
}

.hero-glow-one {
  top: 15%;
  right: 5%;

  background: var(--project-gold);
}

.hero-glow-two {
  bottom: -20%;
  left: 30%;

  background: #fff;
}

/* contenido */

.projects-hero-content {
  position: relative;
  z-index: 3;

  width: min(1250px, 90%);

  margin: auto;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 15px;

  margin-bottom: 25px;

  font-size: 10px;
  font-weight: 700;

  letter-spacing: 0.35em;

  color: var(--project-gold);
}

.hero-kicker span {
  width: 35px;
  height: 1px;

  background: var(--project-gold);
}

.projects-hero h1 {
  max-width: 950px;

  font-size: clamp(50px, 8vw, 115px);

  line-height: 0.9;

  font-weight: 800;

  letter-spacing: -0.055em;

  color: #fff;
}

.projects-hero h1 strong {
  display: block;

  font-weight: 800;

  color: transparent;

  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.7);
}

.projects-hero-content > p {
  max-width: 650px;

  margin-top: 35px;

  font-size: 15px;
  line-height: 1.9;

  color: rgba(255, 255, 255, 0.68);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;

  margin-top: 40px;
}

.hero-btn {
  min-height: 52px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  gap: 18px;

  padding: 0 25px;

  border: 1px solid rgba(255, 255, 255, 0.15);

  font-size: 10px;
  font-weight: 700;

  letter-spacing: 0.16em;

  text-decoration: none;

  transition: 0.4s var(--project-transition);
}

.hero-btn.primary {
  color: #111;

  background: var(--project-gold);

  border-color: var(--project-gold);
}

.hero-btn.primary:hover {
  background: var(--project-gold-light);

  transform: translateY(-4px);
}

.hero-btn.secondary {
  color: #fff;

  background: rgba(255, 255, 255, 0.03);

  backdrop-filter: blur(15px);
}

.hero-btn.secondary:hover {
  border-color: var(--project-gold);
  color: var(--project-gold);

  transform: translateY(-4px);
}

/* scroll */

.hero-scroll {
  position: absolute;

  bottom: 35px;
  left: 5%;

  display: flex;
  align-items: center;
  gap: 15px;

  font-size: 8px;

  letter-spacing: 0.35em;

  color: #777;

  z-index: 5;
}

.scroll-line {
  width: 55px;
  height: 1px;

  background: #555;

  position: relative;

  overflow: hidden;
}

.scroll-line::after {
  content: "";

  position: absolute;

  width: 100%;
  height: 100%;

  background: var(--project-gold);

  transform: translateX(-100%);

  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% {
    transform: translateX(-100%);
  }

  50% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(100%);
  }
}

/* número */

.hero-project-number {
  position: absolute;

  right: 5%;
  bottom: 35px;

  display: flex;
  align-items: flex-end;
  gap: 15px;

  z-index: 5;
}

.hero-project-number span {
  font-size: 42px;
  font-weight: 300;

  color: rgba(255, 255, 255, 0.5);
}

.hero-project-number small {
  padding-bottom: 5px;

  font-size: 8px;
  line-height: 1.6;

  letter-spacing: 0.2em;

  color: #777;
}

/* =========================================================
   STATS
========================================================= */

.projects-stats {
  /* Degradado de izquierda a derecha */
  background: linear-gradient(to right, #241910, #39291b, #523c28);

  border-top: 1px solid var(--project-border);
  border-bottom: 1px solid var(--project-border);
}

.stats-container {
  width: min(1250px, 90%);

  margin: auto;

  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  min-height: 155px;

  padding: 35px 25px;

  display: flex;
  flex-direction: column;
  justify-content: center;

  border-right: 1px solid var(--project-border);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-size: clamp(30px, 4vw, 48px);

  font-weight: 800;

  letter-spacing: -0.04em;

  color: #fff;
}

.stat-number span {
  color: var(--project-gold);
}

.stat-item p {
  margin-top: 7px;

  font-size: 8px;
  font-weight: 700;

  letter-spacing: 0.18em;

  color: #777;
}

/* =========================================================
   CONTAINER
========================================================= */

.section-container {
  width: min(1250px, 90%);

  margin: auto;
}

/* =========================================================
   INTRO
========================================================= */

.projects-intro {
  padding: 140px 0;

  background: var(--project-bg);
}

.intro-label {
  display: flex;
  align-items: center;
  gap: 15px;

  font-size: 9px;
  font-weight: 700;

  letter-spacing: 0.25em;

  color: #8c8989;
}

.intro-label span {
  color: var(--project-gold);
}

.intro-grid {
  display: grid;

  grid-template-columns: 1.3fr 0.7fr;

  gap: 100px;

  margin-top: 55px;
}

.intro-grid h2 {
  max-width: 750px;

  font-size: clamp(40px, 6vw, 78px);

  line-height: 0.98;

  letter-spacing: -0.055em;
}

.intro-grid h2 span {
  display: block;

  color: var(--project-gold);
}

.intro-copy {
  padding-top: 10px;
}

.intro-copy p {
  margin-bottom: 20px;

  font-size: 14px;
  line-height: 1.9;

  color: #85888d;
}

.intro-line {
  width: 80px;
  height: 1px;

  margin: 35px 0 20px;

  background: var(--project-gold);
}

.intro-signature {
  font-size: 8px;

  font-weight: 700;

  letter-spacing: 0.25em;

  color: #555;
}

/* =========================================================
   PROJECTS
========================================================= */

.projects-section {
  padding: 130px 0 150px;

  background:
    radial-gradient(
      circle at 80% 20%,
      rgba(201, 140, 19, 0.035),
      transparent 30%
    ),
    /* Degradado de arriba hacia abajo (o cambia 'to bottom' por 'to right') */
    linear-gradient(to bottom, #090a0c, #1a69b8, #0a3d70);
}

.projects-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;

  gap: 40px;

  margin-bottom: 55px;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;

  margin-bottom: 20px;

  font-size: 9px;
  font-weight: 700;

  letter-spacing: 0.3em;

  color: #777;
}

.section-label span {
  width: 25px;
  height: 1px;

  background: var(--project-gold);
}

.projects-heading h2,
.process-heading h2 {
  font-size: clamp(38px, 5vw, 70px);

  line-height: 0.95;

  letter-spacing: -0.05em;
}

.projects-heading h2 em,
.process-heading h2 em {
  color: var(--project-gold);

  font-style: normal;
}

.projects-heading > p {
  max-width: 360px;

  font-size: 12px;
  line-height: 1.8;

  color: #777;
}

/* =========================================================
   FILTROS
========================================================= */

.project-filters {
  display: flex;
  flex-wrap: wrap;

  gap: 8px;

  padding-bottom: 35px;

  border-bottom: 1px solid var(--project-border);
}

.filter-btn {
  min-height: 38px;

  padding: 0 17px;

  border: 1px solid var(--project-border);

  background: transparent;

  color: #777;

  font-family: inherit;

  font-size: 8px;
  font-weight: 700;

  letter-spacing: 0.15em;

  cursor: pointer;

  transition: 0.35s ease;
}

.filter-btn:hover {
  color: #fff;

  border-color: rgba(185, 154, 91, 0.5);
}

.filter-btn.active {
  color: #111;

  background: var(--project-gold);

  border-color: var(--project-gold);
}

/* =========================================================
   GRID
========================================================= */

.projects-grid {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 30px;

  margin-top: 35px;
}

.project-card {
  position: relative;

  min-width: 0;

  background: var(--project-card);

  border: 1px solid var(--project-border);

  overflow: hidden;

  transition:
    opacity 0.4s ease,
    transform 0.5s var(--project-transition),
    border-color 0.4s ease;
}

.project-card:hover {
  border-color: rgba(185, 154, 91, 0.35);

  transform: translateY(-8px);
}

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

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

/* imagen */

.project-image {
  position: relative;

  height: 390px;

  overflow: hidden;

  background: #16181b;
}

.project-card:not(.project-large):not(.project-wide) .project-image {
  height: 330px;
}

.project-wide .project-image {
  height: 400px;
}

.project-image img {
  width: 100%;
  height: 100%;

  display: block;

  object-fit: cover;

  transition:
    transform 1s var(--project-transition),
    filter 0.6s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.07);

  filter: brightness(0.82) contrast(1.05);
}

/* overlay */

.project-image-overlay {
  position: absolute;
  inset: 0;

  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.3),
    transparent 40%,
    rgba(0, 0, 0, 0.8)
  );

  pointer-events: none;
}

/* número */

.project-number {
  position: absolute;

  top: 22px;
  left: 22px;

  font-size: 10px;
  font-weight: 700;

  letter-spacing: 0.15em;

  color: rgba(255, 255, 255, 0.8);
}

/* abrir */

.project-open {
  position: absolute;

  top: 20px;
  right: 20px;

  width: 45px;
  height: 45px;

  display: flex;
  align-items: center;
  justify-content: center;

  border: 1px solid rgba(255, 255, 255, 0.25);

  background: rgba(0, 0, 0, 0.35);

  backdrop-filter: blur(10px);

  color: #fff;

  cursor: pointer;

  opacity: 0;
  transform: translateY(-10px);

  transition: 0.45s var(--project-transition);
}

.project-card:hover .project-open {
  opacity: 1;
  transform: translateY(0);
}

.project-open:hover {
  background: var(--project-gold);

  border-color: var(--project-gold);

  color: #111;
}

/* contenido */

.project-content {
  padding: 27px 28px 30px;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;

  margin-bottom: 17px;
}

.project-meta span {
  font-size: 8px;
  font-weight: 700;

  letter-spacing: 0.15em;

  color: var(--project-gold);
}

.project-meta span:last-child {
  color: #555;
}

.project-content h3 {
  max-width: 600px;

  font-size: clamp(21px, 2vw, 29px);

  line-height: 1.15;

  letter-spacing: -0.03em;
}

.project-content p {
  max-width: 600px;

  margin-top: 12px;

  font-size: 11px;

  line-height: 1.8;

  color: #777;
}

.project-location {
  display: flex;
  align-items: center;

  gap: 8px;

  margin-top: 20px;

  font-size: 9px;

  color: #555;
}

.project-location i {
  color: var(--project-gold);
}

/* =========================================================
   FILTRO ANIMACIÓN
========================================================= */

.project-card.is-hidden {
  display: none;
}

.project-card.is-filtering {
  animation: projectFilter 0.5s var(--project-transition);
}

@keyframes projectFilter {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* =========================================================
   EMPTY
========================================================= */

.projects-empty {
  display: none;

  text-align: center;

  padding: 100px 20px;
}

.projects-empty.show {
  display: block;
}

.projects-empty i {
  font-size: 35px;

  color: var(--project-gold);
}

.projects-empty h3 {
  margin-top: 20px;

  font-size: 20px;
}

.projects-empty p {
  margin-top: 10px;

  font-size: 12px;

  color: #777;
}

/* =========================================================
   PROCESS
========================================================= */

.process-section {
  padding: 130px 0;

  background: #090a0c;

  border-top: 1px solid var(--project-border);
}

.process-heading {
  margin-bottom: 70px;
}

.process-grid {
  display: grid;

  grid-template-columns: repeat(4, 1fr);

  border-top: 1px solid var(--project-border);
  border-left: 1px solid var(--project-border);
}

.process-item {
  position: relative;

  min-height: 300px;

  padding: 35px;

  border-right: 1px solid var(--project-border);
  border-bottom: 1px solid var(--project-border);

  transition:
    background 0.4s ease,
    transform 0.4s ease;
}

.process-item:hover {
  background: rgba(255, 255, 255, 0.025);

  transform: translateY(-5px);
}

.process-item > span {
  position: absolute;

  top: 25px;
  right: 25px;

  font-size: 9px;

  color: #555;
}

.process-icon {
  width: 60px;
  height: 60px;

  display: flex;
  align-items: center;
  justify-content: center;

  margin-bottom: 45px;

  border: 1px solid rgba(185, 154, 91, 0.3);

  color: var(--project-gold);

  font-size: 20px;
}

.process-item h3 {
  font-size: 13px;

  letter-spacing: 0.12em;
}

.process-item p {
  margin-top: 15px;

  font-size: 11px;

  line-height: 1.8;

  color: #6f7277;
}

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

/* =========================================================
   MODAL
========================================================= */

/* =========================================================
   REVEAL
========================================================= */

.reveal {
  opacity: 0;

  transform: translateY(40px);

  transition:
    opacity 0.8s ease,
    transform 0.8s var(--project-transition);
}

.reveal.visible {
  opacity: 1;

  transform: translateY(0);
}

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

@media (max-width: 1000px) {
  .intro-grid {
    grid-template-columns: 1fr;

    gap: 40px;
  }

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

  .modal-content {
    padding: 35px;
  }
}

@media (max-width: 800px) {
  .projects-hero {
    min-height: 85vh;
  }

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

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .stat-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--project-border);
  }

  .projects-heading {
    align-items: flex-start;

    flex-direction: column;
  }

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

  .project-card.project-large,
  .project-card.project-wide {
    grid-column: span 1;
  }

  .project-image,
  .project-card:not(.project-large):not(.project-wide) .project-image,
  .project-wide .project-image {
    height: 330px;
  }
}

@media (max-width: 600px) {
  .projects-hero-content > p {
    font-size: 12px;
  }

  .hero-buttons {
    flex-direction: column;

    align-items: stretch;
  }

  .hero-btn {
    width: 100%;
  }

  .hero-project-number {
    display: none;
  }

  .hero-scroll {
    left: 20px;
  }

  .projects-intro,
  .projects-section,
  .process-section {
    padding-top: 90px;
    padding-bottom: 90px;
  }

  .project-filters {
    overflow-x: auto;
    flex-wrap: nowrap;

    padding-bottom: 20px;

    scrollbar-width: none;
  }

  .project-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex: 0 0 auto;
  }

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

  .process-item {
    min-height: 250px;
  }

  .cta-container {
    width: 90%;
    margin: auto;
  }

  .cta-buttons {
    flex-direction: column;

    align-items: stretch;
  }

  .cta-main-button,
  .cta-outline-button {
    width: 100%;
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
}