/* ========================================
   DESIGN SYSTEM — ARCA Arquitectos
   Minimalist Architecture Website
   ======================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-white: #ffffff;
  --color-black: #0a0a0a;
  --color-gray-50: #fafafa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e8e8e8;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;
  --color-accent: #8b7355;
  --color-accent-light: #b09a7c;
  --color-accent-dark: #6b573f;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Layout */
  --max-width: 1400px;
  --section-padding: clamp(4rem, 8vw, 8rem);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.7s;
  --duration-slower: 1s;

  /* Borders */
  --border-thin: 1px solid var(--color-gray-200);
}

/* --- CSS Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

/* --- Utility: Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* --- Section Label (tiny label above titles) --- */
.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}

.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--color-accent);
}

/* --- Section Title --- */
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.2;
  color: var(--color-gray-900);
  margin-bottom: var(--space-md);
}

.section-title em {
  font-style: italic;
  color: var(--color-accent);
}

.section-subtitle {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.8;
  color: var(--color-gray-500);
  max-width: 620px;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: background var(--duration-normal) var(--ease-out),
              padding var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.75rem 0;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-white);
  transition: color var(--duration-normal) var(--ease-out);
}

.logo span {
  font-weight: 400;
  font-style: italic;
  color: var(--color-accent-light);
}

.site-header.scrolled .logo {
  color: var(--color-gray-900);
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.main-nav a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-out);
}

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

.site-header.scrolled .main-nav a {
  color: var(--color-gray-600);
}

.site-header.scrolled .main-nav a:hover {
  color: var(--color-gray-900);
}

.nav-cta {
  font-size: 0.75rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.15em !important;
  color: var(--color-white) !important;
  background: var(--color-accent);
  padding: 0.7rem 1.5rem !important;
  border-radius: 0;
  transition: background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--color-accent-dark) !important;
}

.site-header.scrolled .nav-cta {
  color: var(--color-white) !important;
}

/* Hamburger (Mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1010;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out),
              background var(--duration-normal) var(--ease-out);
}

.site-header.scrolled .hamburger span {
  background: var(--color-gray-800);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Navigation Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-white);
  z-index: 1005;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--color-gray-800);
  transition: color var(--duration-fast) var(--ease-out);
}

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

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  animation: heroZoom 20s var(--ease-in-out) infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.12); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.7) 0%,
    rgba(0,0,0,0.35) 40%,
    rgba(0,0,0,0.15) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(3rem, 6vw, 6rem);
}

.hero-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1s var(--ease-out) 0.3s forwards;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-white);
  max-width: 800px;
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 0.5s forwards;
}

.hero-title em {
  font-style: italic;
}

.hero-desc {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  font-weight: 300;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  margin-bottom: var(--space-xl);
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 0.7s forwards;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s var(--ease-out) 0.9s forwards;
}

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

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white);
  background: var(--color-accent);
  padding: 1rem 2rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background var(--duration-fast) var(--ease-out);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
}

.btn-primary svg {
  width: 14px;
  height: 14px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white);
  padding: 1rem 0;
  cursor: pointer;
  border-bottom: 1px solid rgba(255,255,255,0.4);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.btn-outline:hover {
  border-color: var(--color-white);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  right: clamp(1.5rem, 4vw, 3rem);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: heroFadeIn 1s var(--ease-out) 1.2s forwards;
}

.scroll-indicator span {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.2);
  position: relative;
  overflow: hidden;
}

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

@keyframes scrollDash {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* ========================================
   ABOUT / PHILOSOPHY SECTION
   ======================================== */
.about-section {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.about-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.about-text p {
  color: var(--color-gray-500);
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  margin-bottom: var(--space-md);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: var(--border-thin);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 400;
  color: var(--color-gray-900);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

.about-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/5;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.about-image:hover img {
  transform: scale(1.03);
}

.about-image-accent {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 120px;
  height: 120px;
  border: 1px solid var(--color-accent-light);
  opacity: 0.5;
}

/* ========================================
   SERVICES SECTION
   ======================================== */
.services-section {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.services-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.services-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-gray-200);
  border: 1px solid var(--color-gray-200);
}

.service-card {
  background: var(--color-white);
  padding: clamp(2rem, 4vw, 3rem);
  position: relative;
  transition: background var(--duration-normal) var(--ease-out);
}

.service-card:hover {
  background: var(--color-gray-50);
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
}

.service-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--color-gray-900);
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--color-gray-500);
  line-height: 1.7;
}

.service-number {
  position: absolute;
  top: clamp(1.5rem, 3vw, 2.5rem);
  right: clamp(1.5rem, 3vw, 2.5rem);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--color-gray-300);
}

/* ========================================
   PORTFOLIO / PROJECTS SECTION
   ======================================== */
.portfolio-section {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.portfolio-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-3xl);
}

.portfolio-header-text {
  max-width: 600px;
}

/* Filter Tabs */
.portfolio-filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.filter-btn {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  padding: 0.5rem 1rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--color-gray-800);
  border-color: var(--color-gray-300);
}

.filter-btn.active {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* Projects Grid */
.projects-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}

.project-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: auto;
}

.project-card:nth-child(1) { grid-column: 1 / 3; aspect-ratio: 16/9; }
.project-card:nth-child(2) { aspect-ratio: 3/4; }
.project-card:nth-child(3) { aspect-ratio: 3/4; }
.project-card:nth-child(4) { grid-column: 2 / 4; aspect-ratio: 16/9; }
.project-card:nth-child(5) { aspect-ratio: 1; grid-row: 3; grid-column: 1; }
.project-card:nth-child(6) { aspect-ratio: 1; grid-row: 3; grid-column: 2; }
.project-card:nth-child(7) { aspect-ratio: 1; grid-row: 3; grid-column: 3; }
.project-card:nth-child(8) { grid-column: 1 / 4; aspect-ratio: 21/9; }

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.65) 0%,
    rgba(0,0,0,0) 60%
  );
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(1rem, 2vw, 2rem);
}

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

.project-tag {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 0.3rem;
}

.project-name {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  font-weight: 400;
  color: var(--color-white);
}

.project-location {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-top: 0.2rem;
}

/* ========================================
   PROCESS SECTION
   ======================================== */
.process-section {
  padding: var(--section-padding) 0;
  background: var(--color-gray-50);
}

.process-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.process-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.process-header .section-subtitle {
  margin: 0 auto;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: var(--color-gray-200);
}

.process-step {
  text-align: center;
  padding: 0 var(--space-md);
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-300);
  background: var(--color-white);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
  transition: all var(--duration-normal) var(--ease-out);
}

.process-step:hover .step-number {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.process-step h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-gray-900);
  margin-bottom: 0.6rem;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* ========================================
   TESTIMONIALS SECTION
   ======================================== */
.testimonials-section {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.testimonials-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.testimonials-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.testimonials-header .section-subtitle {
  margin: 0 auto;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2rem);
}

.testimonial-card {
  padding: clamp(2rem, 3vw, 2.5rem);
  border: var(--border-thin);
  position: relative;
  transition: border-color var(--duration-normal) var(--ease-out);
}

.testimonial-card:hover {
  border-color: var(--color-accent-light);
}

.testimonial-quote-mark {
  font-family: var(--font-display);
  font-size: 3.5rem;
  line-height: 1;
  color: var(--color-accent-light);
  opacity: 0.5;
  margin-bottom: var(--space-sm);
}

.testimonial-text {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.testimonial-author-info h4 {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-gray-800);
}

.testimonial-author-info span {
  font-size: 0.75rem;
  color: var(--color-gray-400);
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact-section {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.contact-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(3rem, 6vw, 6rem);
}

.contact-info {
  padding-top: var(--space-lg);
}

.contact-info .section-subtitle {
  margin-bottom: var(--space-xl);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.contact-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item-text h4 {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-800);
  margin-bottom: 0.3rem;
}

.contact-item-text p,
.contact-item-text a {
  font-size: 0.95rem;
  color: var(--color-gray-500);
}

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

.social-links {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: var(--border-thin);
  color: var(--color-gray-500);
  transition: all var(--duration-fast) var(--ease-out);
}

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

.social-link svg {
  width: 18px;
  height: 18px;
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--color-gray-50);
  padding: clamp(2rem, 4vw, 3rem);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-600);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-gray-300);
  background: transparent;
  color: var(--color-gray-800);
  font-weight: 300;
  font-size: 0.95rem;
  transition: border-color var(--duration-fast) var(--ease-out);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-gray-400);
}

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

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a3a3a3' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
}

.form-submit {
  margin-top: var(--space-sm);
}

.form-submit .btn-primary {
  width: 100%;
  justify-content: center;
  padding: 1.1rem 2rem;
}

.form-note {
  font-size: 0.78rem;
  color: var(--color-gray-400);
  text-align: center;
  margin-top: var(--space-sm);
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  background: var(--color-gray-900);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: var(--space-xl);
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-white);
  letter-spacing: 0.05em;
}

.footer-logo span {
  font-weight: 400;
  font-style: italic;
  color: var(--color-accent-light);
}

.footer-nav {
  display: flex;
  gap: var(--space-xl);
}

.footer-nav a {
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.3);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-legal a:hover {
  color: rgba(255,255,255,0.6);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .project-card:nth-child(1) { grid-column: 1 / 3; }
  .project-card:nth-child(2) { grid-column: 1; }
  .project-card:nth-child(3) { grid-column: 2; }
  .project-card:nth-child(4) { grid-column: 1 / 3; }
  .project-card:nth-child(5) { grid-column: 1; grid-row: auto; aspect-ratio: 1; }
  .project-card:nth-child(6) { grid-column: 2; grid-row: auto; aspect-ratio: 1; }
  .project-card:nth-child(7) { grid-column: 1 / 3; grid-row: auto; aspect-ratio: 16/9; }
  .project-card:nth-child(8) { grid-column: 1 / 3; }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }

  .process-steps::before {
    display: none;
  }

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: 1 / 3;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .main-nav {
    display: none;
  }

  .mobile-nav {
    display: flex;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .about-image {
    order: -1;
    aspect-ratio: 16/10;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .project-card:nth-child(n) {
    grid-column: 1 !important;
    grid-row: auto !important;
    aspect-ratio: 16/10 !important;
  }

  .project-overlay {
    opacity: 1;
  }

  .portfolio-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-lg);
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: 1;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-top {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .footer-legal {
    gap: var(--space-sm);
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 480px) {
  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    text-align: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}