/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0a;
  --bg-light: #111111;
  --bg-card: #161616;
  --text: #ffffff;
  --text-muted: #888888;
  --text-dim: #555555;
  --accent: #e0e0e0;
  --border: #222222;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --max-width: 1400px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--text-muted);
}

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

ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 640px;
}

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-bottom: 1rem;
  font-weight: 500;
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  transition: background var(--transition), padding var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-logo span {
  font-weight: 300;
  opacity: 0.5;
  margin-left: 0.25rem;
  font-size: 0.65em;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 400;
  color: var(--text-muted);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== HERO SECTIONS ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
  position: relative;
}

.hero-content {
  max-width: 900px;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero p {
  margin: 0 auto 2.5rem;
  font-size: 1.125rem;
}

.page-hero {
  min-height: 60vh;
  display: flex;
  align-items: flex-end;
  padding: 8rem 0 4rem;
}

.page-hero .container {
  width: 100%;
}

.page-hero h1 {
  margin-bottom: 1rem;
}

.page-hero p {
  font-size: 1.125rem;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border: 1px solid var(--text);
  color: var(--text);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

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

.btn-fill {
  background: var(--text);
  color: var(--bg);
}

.btn-fill:hover {
  background: transparent;
  color: var(--text);
}

/* ===== VIDEO EMBED ===== */
.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 4rem auto 0;
  aspect-ratio: 16 / 9;
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
}

.video-wrapper .placeholder-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-align: center;
}

.video-wrapper .play-icon {
  width: 64px;
  height: 64px;
  border: 2px solid var(--text-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.video-wrapper .play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--text-dim);
  margin-left: 4px;
}

/* ===== SECTIONS ===== */
section {
  padding: 8rem 0;
}

section.dark {
  background: var(--bg-light);
}

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

.section-header h2 {
  margin-bottom: 1rem;
}

/* ===== INTRO SECTION ===== */
.intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.intro-text p {
  margin-bottom: 1.5rem;
}

.intro-image {
  aspect-ratio: 4 / 5;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

/* ===== FEATURED / PORTFOLIO GRID ===== */
.staggered-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.grid-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.grid-item:nth-child(1) { grid-column: 1 / 8; }
.grid-item:nth-child(2) { grid-column: 8 / 13; margin-top: 4rem; }
.grid-item:nth-child(3) { grid-column: 1 / 5; }
.grid-item:nth-child(4) { grid-column: 5 / 13; margin-top: -2rem; }
.grid-item:nth-child(5) { grid-column: 1 / 7; }
.grid-item:nth-child(6) { grid-column: 7 / 13; margin-top: 3rem; }

.grid-item-inner {
  aspect-ratio: 16 / 10;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), border-color var(--transition);
  overflow: hidden;
}

.grid-item:hover .grid-item-inner {
  border-color: var(--text-dim);
  transform: scale(1.02);
}

.grid-item .placeholder-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  transition: color var(--transition);
}

.grid-item:hover .placeholder-label {
  color: var(--text-muted);
}

.grid-item-info {
  margin-top: 1rem;
}

.grid-item-info h4 {
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.grid-item-info span {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ===== PORTFOLIO PAGE GRID ===== */
.portfolio-filters {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition);
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--text);
}

.filter-btn.active::after {
  width: 100%;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.project-card {
  position: relative;
  overflow: hidden;
  transition: opacity var(--transition), transform var(--transition);
}

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

.project-card-image {
  aspect-ratio: 16 / 10;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color var(--transition);
}

.project-card:hover .project-card-image {
  border-color: var(--text-dim);
}

.project-card-image .placeholder-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  transition: color var(--transition);
}

.project-card:hover .project-card-image .placeholder-label {
  color: var(--text-muted);
}

.project-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-card-overlay {
  opacity: 1;
}

.project-card-overlay span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  border-bottom: 1px solid var(--text);
  padding-bottom: 2px;
}

.project-card-info {
  padding: 1.25rem 0;
}

.project-card-info h4 {
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.project-card-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}

.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}

.service-item:nth-child(even) {
  direction: rtl;
}

.service-item:nth-child(even) > * {
  direction: ltr;
}

.service-number {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  font-weight: 400;
}

.service-item h3 {
  margin-bottom: 1rem;
}

.service-item p {
  margin-bottom: 1.5rem;
}

.service-image {
  aspect-ratio: 16 / 10;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.service-tags {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.service-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
}

/* ===== ABOUT PAGE ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.about-text h3 {
  margin-bottom: 1.5rem;
}

.about-text p {
  margin-bottom: 1.5rem;
}

.about-image {
  aspect-ratio: 3 / 4;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  position: sticky;
  top: 8rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-top: 2rem;
}

.value-item {
  padding: 2.5rem;
  border: 1px solid var(--border);
  transition: border-color var(--transition);
}

.value-item:hover {
  border-color: var(--text-dim);
}

.value-item h4 {
  margin-bottom: 1rem;
  font-weight: 500;
}

.value-item p {
  font-size: 0.9rem;
}

/* ===== CONTACT PAGE ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
  font-size: 1rem;
  color: var(--text);
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}

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

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23555' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
  cursor: pointer;
}

.form-group select option {
  background: var(--bg);
  color: var(--text);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: none;
}

.form-status.show {
  display: block;
}

.contact-info {
  padding-top: 1rem;
}

.contact-info-group {
  margin-bottom: 3rem;
}

.contact-info-group h4 {
  margin-bottom: 1rem;
  font-weight: 500;
}

.contact-info-group p,
.contact-info-group a {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 2;
}

.contact-info-group a:hover {
  color: var(--text);
}

.social-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.social-links-list a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* ===== CTA SECTION ===== */
.cta-section {
  text-align: center;
  padding: 10rem 0;
  border-top: 1px solid var(--border);
}

.cta-section h2 {
  margin-bottom: 1.5rem;
}

.cta-section p {
  margin: 0 auto 2.5rem;
}

/* ===== FOOTER ===== */
.footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .nav-logo {
  margin-bottom: 1rem;
  display: inline-block;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-nav h5 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  margin-bottom: 1rem;
  font-weight: 500;
}

.footer-nav a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.footer-social {
  display: flex;
  gap: 1.5rem;
}

.footer-social a {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.footer-social a:hover {
  color: var(--text);
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== LINE DECORATION ===== */
.line-divider {
  width: 60px;
  height: 1px;
  background: var(--text-dim);
  margin: 2rem 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .intro {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

  .grid-item:nth-child(n) {
    grid-column: auto;
    margin-top: 0;
  }

  .grid-item:nth-child(even) {
    margin-top: 2rem;
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .service-item:nth-child(even) {
    direction: ltr;
  }

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

  .about-image {
    position: static;
    max-width: 500px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

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

@media (max-width: 768px) {
  section {
    padding: 5rem 0;
  }

  .hero {
    min-height: 90vh;
    padding: 7rem 1.5rem 3rem;
  }

  .page-hero {
    min-height: 50vh;
    padding: 7rem 0 3rem;
  }

  .container {
    padding: 0 1.25rem;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    transition: right var(--transition);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1.25rem;
    letter-spacing: 0.2em;
  }

  .nav-toggle {
    display: flex;
  }

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

  .grid-item:nth-child(even) {
    margin-top: 0;
  }

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

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

  .footer-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cta-section {
    padding: 6rem 0;
  }

  .portfolio-filters {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }

  .btn {
    padding: 0.85rem 2rem;
    font-size: 0.75rem;
  }

  .hero {
    min-height: 80vh;
  }
}