/* =====================================================
   WHITEX DIGITAL — STYLESHEET
   Structure:
   1. Variables & Reset
   2. Base / Typography
   3. Layout helpers
   4. Buttons
   5. Navbar & Preloader
   6. Hero
   7. Stats
   8. Services
   9. Work
   10. Why Whitex
   11. Process
   12. About
   13. Big CTA
   14. Contact
   15. Footer
   16. Back to top
   17. Reveal animations
   18. Responsive
===================================================== */

/* -----------------------------------------------------
   1. VARIABLES & RESET
----------------------------------------------------- */
:root {
  /* Colors */
  --bg-primary: #050505;
  --bg-secondary: #0A0A0A;
  --bg-card: #101010;
  --green: #39FF14;
  --green-dim: rgba(57, 255, 20, 0.12);
  --white: #FFFFFF;
  --text-secondary: #A0A0A0;
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);

  /* Type */
  --font-display: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;

  /* Layout */
  --max-width: 1240px;
  --section-padding: 140px;
  --radius-sm: 4px;
  --radius-md: 10px;

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease);
  --transition-base: 0.4s var(--ease);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  background-color: var(--bg-primary);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
  color: var(--white);
}

/* Accessible focus state */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* -----------------------------------------------------
   2. BASE / TYPOGRAPHY
----------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2.1rem, 4vw, 3.4rem);
}

h3 {
  font-size: 1.3rem;
}

p {
  color: var(--text-secondary);
}

.text-green { color: var(--green); }

.eyebrow,
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}

/* -----------------------------------------------------
   3. LAYOUT HELPERS
----------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.section-header {
  margin-bottom: 64px;
  max-width: 720px;
}

.section-header .section-label {
  margin-bottom: 18px;
}

.section-intro {
  max-width: 640px;
  margin-bottom: 72px;
}

.section-intro p {
  margin-top: 18px;
  font-size: 1.05rem;
}

section {
  position: relative;
}

/* -----------------------------------------------------
   4. BUTTONS
----------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 30px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast), background-color var(--transition-fast),
              color var(--transition-fast), border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn span { transition: transform var(--transition-fast); }
.btn:hover span { transform: translateX(3px); }

.btn-primary {
  background-color: var(--green);
  color: #050505;
  border: 1px solid var(--green);
}

.btn-primary:hover {
  box-shadow: 0 0 28px rgba(57, 255, 20, 0.35);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--white);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  border-color: var(--green);
  color: var(--green);
  transform: translateY(-2px);
}

.btn-nav {
  padding: 12px 22px;
  font-size: 0.72rem;
}

/* -----------------------------------------------------
   5. NAVBAR
----------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.navbar.scrolled {
  background-color: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 22px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.logo-dot { color: var(--green); }

/* -----------------------------------------------------
   PRELOADER
----------------------------------------------------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

/* Lock scrolling only while the loader is visible */
body:has(.preloader:not(.hidden)) {
  overflow: hidden;
}

.preloader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.preloader-logo {
  height: 96px;
  width: auto;
  animation: preloaderPulse 1.8s var(--ease) infinite;
}

@keyframes preloaderPulse {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 0 10px rgba(57, 255, 20, 0.15));
  }
  50% {
    transform: scale(1.07);
    filter: drop-shadow(0 0 28px rgba(57, 255, 20, 0.55));
  }
}

.preloader-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.35em;
  padding-left: 0.35em; /* visually balance the letter-spacing */
  animation: preloaderFadeUp 1s var(--ease) both;
}

@keyframes preloaderFadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.preloader-slogan {
  max-width: 340px;
  text-align: center;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1.9;
  color: var(--text-secondary);
  animation: preloaderFadeUp 1s var(--ease) 0.25s both;
}

.preloader-bar {
  width: 180px;
  height: 2px;
  background-color: var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.preloader-progress {
  display: block;
  height: 100%;
  width: 40%;
  background-color: var(--green);
  border-radius: inherit;
  animation: preloaderSlide 1.2s var(--ease) infinite;
}

@keyframes preloaderSlide {
  0% {
    transform: translateX(-110%);
  }
  100% {
    transform: translateX(460%);
  }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-left: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  position: relative;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: var(--green);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--white);
  transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
}

.hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); background-color: var(--green); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); background-color: var(--green); }

/* -----------------------------------------------------
   6. HERO
----------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 32px 100px;
  overflow: hidden;
}

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

.hero-grid {
  position: absolute;
  inset: -1px;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 75%);
  animation: gridDrift 30s linear infinite;
}

@keyframes gridDrift {
  from { background-position: 0 0; }
  to { background-position: 64px 64px; }
}

.hero-glow {
  position: absolute;
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  max-width: 140vw;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.16) 0%, rgba(57, 255, 20, 0.05) 35%, transparent 70%);
  animation: glowPulse 6s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.75; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.06); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-content .eyebrow {
  margin-bottom: 24px;
}

.hero-heading {
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  text-transform: uppercase;
}

.hero-desc {
  max-width: 560px;
  margin: 28px 0 40px;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.slogan {
  max-width: 620px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 1;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--text-secondary);
}

.scroll-line {
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--green), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* -----------------------------------------------------
   7. STATS
----------------------------------------------------- */
.stats-section {
  padding: var(--section-padding) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-section h2 { margin-bottom: 0; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.stat-card {
  background-color: var(--bg-secondary);
  padding: 44px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background-color var(--transition-base);
}

.stat-card:hover {
  background-color: var(--bg-card);
}

.stat-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 3rem);
  color: var(--green);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* -----------------------------------------------------
   8. SERVICES
----------------------------------------------------- */
.services-section {
  padding: var(--section-padding) 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--green);
  box-shadow: 0 0 40px rgba(57, 255, 20, 0.12);
}

.service-number {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.service-title {
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.service-desc {
  font-size: 0.92rem;
  flex-grow: 1;
}

.service-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--white);
  transition: transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  align-self: flex-start;
}

.service-card:hover .service-arrow {
  transform: translate(4px, -4px);
  border-color: var(--green);
  color: var(--green);
}

/* -----------------------------------------------------
   9. WORK
----------------------------------------------------- */
.work-section {
  padding: var(--section-padding) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.work-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 2 / 3;
  cursor: pointer;
}

.work-visual {
  position: absolute;
  inset: 0;
  background-color: #0c0c0c;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  transition: transform 0.6s var(--ease);
}

.work-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) brightness(0.85);
  transition: filter var(--transition-base);
}

.work-card:hover .work-img {
  filter: grayscale(0%) brightness(1);
}

.work-visual-tag {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.06);
  line-height: 1;
}

/* Distinct CSS-only mockup patterns per project, no external images required */

.work-card:hover .work-visual {
  transform: scale(1.08);
}

.work-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  background: linear-gradient(180deg, transparent 40%, rgba(5, 5, 5, 0.92) 100%);
}

.work-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(57, 255, 20, 0.08);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.work-card:hover .work-overlay::before {
  opacity: 1;
}

.work-category {
  position: relative;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 8px;
}

.work-title {
  position: relative;
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.work-link {
  position: relative;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--white);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.work-card:hover .work-link {
  opacity: 1;
  transform: translateY(0);
}

/* -----------------------------------------------------
   10. WHY WHITEX
----------------------------------------------------- */
.why-section {
  padding: var(--section-padding) 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background-color: var(--border);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.why-item {
  background-color: var(--bg-primary);
  padding: 56px 48px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.why-number {
  display: block;
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--border-strong);
  margin-bottom: 18px;
}

.why-title {
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}

.why-desc {
  max-width: 420px;
}

/* -----------------------------------------------------
   11. PROCESS
----------------------------------------------------- */
.process-section {
  padding: var(--section-padding) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-list {
  max-width: 780px;
}

.process-item {
  display: flex;
  gap: 32px;
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
  transition: padding-left var(--transition-base);
}

.process-item:first-child {
  border-top: 1px solid var(--border);
}

.process-item:hover {
  padding-left: 12px;
}

.process-number {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--green);
  flex-shrink: 0;
  padding-top: 4px;
}

.process-body h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

.process-body p {
  font-size: 0.92rem;
}

/* -----------------------------------------------------
   12. ABOUT
----------------------------------------------------- */
.about-section {
  padding: var(--section-padding) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-left h2 {
  text-transform: uppercase;
}

.about-desc {
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.about-keywords {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.about-keywords li {
  padding: 18px 0;
  border-top: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--white);
}

.about-keywords li:last-child {
  border-bottom: 1px solid var(--border);
}

/* -----------------------------------------------------
   13. BIG CTA
----------------------------------------------------- */
.cta-section {
  position: relative;
  padding: 180px 0;
  text-align: center;
  overflow: hidden;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  max-width: 130vw;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.18) 0%, transparent 65%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-content h2 {
  text-transform: uppercase;
  margin-bottom: 20px;
}

.cta-content p {
  max-width: 520px;
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* -----------------------------------------------------
   14. CONTACT
----------------------------------------------------- */
.contact-section {
  padding: var(--section-padding) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
}

.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
}

.contact-map iframe {
  display: block;
  width: 100%;
  height: 420px;
  border: 0;
  filter: grayscale(1) invert(0.92) contrast(0.9) hue-rotate(180deg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.form-group label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  width: 100%;
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A0A0A0' stroke-width='1.6'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green);
  background-color: #131313;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: #ff4d4d;
}

.form-error {
  font-size: 0.78rem;
  color: #ff6b6b;
  min-height: 1em;
  display: none;
}

.form-group.error .form-error {
  display: block;
}

.form-success {
  display: none;
  margin-top: 8px;
  padding: 16px 18px;
  background-color: var(--green-dim);
  border: 1px solid var(--green);
  border-radius: var(--radius-sm);
  color: var(--green);
  font-size: 0.9rem;
}

.form-success.visible {
  display: block;
  animation: fadeUp 0.5s var(--ease);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.contact-info-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.contact-email {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--white);
  transition: color var(--transition-fast);
}

.contact-email:hover { color: var(--green); }

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-phone {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--white);
  transition: color var(--transition-fast);
}

.contact-phone:hover { color: var(--green); }

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.social-links .social-icon {
  flex-shrink: 0;
}

.social-links a:hover {
  color: var(--green);
  padding-left: 6px;
}

/* -----------------------------------------------------
   15. FOOTER
----------------------------------------------------- */
.footer {
  padding: 72px 0 32px;
  background-color: var(--bg-secondary);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
}

.footer-slogan {
  max-width: 420px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--white);
}

.footer-tagline {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

.footer-remote {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-powered {
  letter-spacing: 0.04em;
}

.powered-link {
  color: var(--green);
  font-weight: 600;
  transition: opacity var(--transition-fast);
}

.powered-link:hover {
  opacity: 0.75;
}

/* -----------------------------------------------------
   16. BACK TO TOP
----------------------------------------------------- */
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base),
              border-color var(--transition-fast), color var(--transition-fast);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.whatsapp-float {
  position: fixed;
  left: 28px;
  bottom: 28px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: #25d366;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(37, 211, 102, 0.35);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  z-index: 900;
}

.whatsapp-float:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.5);
}

.back-to-top:hover {
  border-color: var(--green);
  color: var(--green);
}

/* -----------------------------------------------------
   17. REVEAL ANIMATIONS
----------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* -----------------------------------------------------
   18. RESPONSIVE
----------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 100px;
  }

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

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

  .about-grid {
    gap: 40px;
  }
}

@media (max-width: 900px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(320px, 80vw);
    background-color: var(--bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 40px;
    padding: 40px;
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .nav-link {
    font-size: 1.1rem;
  }

  .hamburger {
    display: flex;
  }

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

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

  .work-card {
    aspect-ratio: 3 / 4;
  }

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

@media (max-width: 640px) {
  :root {
    --section-padding: 80px;
  }

  .container {
    padding: 0 22px;
  }

  .hero {
    padding: 120px 22px 90px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

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

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

  .stat-card {
    padding: 32px 20px;
  }

  .why-item {
    padding: 40px 26px;
  }

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

  .footer-grid {
    flex-direction: column;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .back-to-top {
    right: 18px;
    bottom: 18px;
  }

  .whatsapp-float {
    left: 18px;
    bottom: 18px;
    width: 48px;
    height: 48px;
  }

  /* Preloader */
  .preloader-inner {
    gap: 18px;
  }

  .preloader-logo {
    height: 64px;
  }

  .preloader-text {
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    padding-left: 0.25em;
    text-align: center;
  }

  .preloader-slogan {
    max-width: 240px;
    font-size: 0.6rem;
    letter-spacing: 0.14em;
  }

  .preloader-bar {
    width: 140px;
  }

  /* Navbar logo */
  .nav-logo-img {
    height: 32px;
  }

  .nav-logo {
    font-size: 0.9rem;
  }

  /* Contact map */
  .contact-map iframe {
    height: 280px;
  }
}

@media (max-width: 380px) {
  .preloader-logo {
    height: 52px;
  }

  .preloader-text {
    font-size: 0.7rem;
  }

  .nav-logo-img {
    height: 28px;
  }
}