/* ═══════════════════════════════════════════════════════════════
   MF Web Developer — style.css
   Tech Minimalist Design System
═══════════════════════════════════════════════════════════════ */

/* ── 1. DESIGN TOKENS ──────────────────────────────────────── */
:root {
  /* Colors */
  --clr-bg: #0d0f14;
  --clr-bg-2: #111318;
  --clr-bg-3: #171a22;
  --clr-surface: #1e2130;
  --clr-border: rgba(255, 255, 255, 0.07);

  --clr-white: #ffffff;
  --clr-text: #e2e4ea;
  --clr-muted: #8b93a8;
  --clr-subtle: #555d72;

  /* Brand Accent — Electric Blue */
  --clr-accent: #3b82f6;
  --clr-accent-lt: #60a5fa;
  --clr-accent-dk: #2563eb;
  --clr-accent-glow: rgba(59, 130, 246, 0.3);

  /* Gradient */
  --grad-hero: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --grad-text: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.09);
  --glass-blur: 16px;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Typography */
  --font-body: 'Inter', system-ui, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.75rem;
  --text-4xl: 3.75rem;
  --text-5xl: 5rem;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 9999px;

  /* Transitions */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --dur: .25s;
}

/* ── 2. RESET & BASE ────────────────────────────────────────── */
*,
::before,
::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

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

input,
textarea,
select {
  font-family: inherit;
}

em {
  font-style: normal;
  color: var(--clr-accent-lt);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
}

.hide-sm {
  display: inline;
}

/* ── 3. TYPOGRAPHY HELPERS ──────────────────────────────────── */
.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-sm);
  padding: 6px 14px;
  border: 1px solid rgba(59, 130, 246, .3);
  border-radius: var(--r-full);
  background: rgba(59, 130, 246, .08);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
  color: var(--clr-white);
}

.section-desc {
  font-size: var(--text-md);
  color: var(--clr-muted);
  max-width: 540px;
}

/* ── 4. BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.5rem;
  border-radius: var(--r-md);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  transition: all var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.05);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: 0 0 24px var(--clr-accent-glow);
}

.btn-primary:hover {
  background: var(--clr-accent-lt);
  box-shadow: 0 0 40px rgba(59, 130, 246, .5);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
}

.btn-ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent-lt);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-md);
  border-radius: 12px;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

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

.btn-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ── 5. GLASS CARD ──────────────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-radius: var(--r-xl);
}

/* ── 6. NAVBAR ──────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.navbar.scrolled {
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--clr-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--grad-hero);
  border-radius: 10px;
  font-weight: 900;
  font-size: var(--text-sm);
  color: #fff;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.logo-text {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--clr-white);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a:not(.btn) {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-muted);
  transition: color var(--dur) var(--ease);
  position: relative;
}

.nav-links a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--clr-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
  border-radius: 2px;
}

.nav-links a:not(.btn):hover {
  color: var(--clr-white);
}

.nav-links a:not(.btn):hover::after {
  transform: scaleX(1);
}

.nav-cta {
  margin-left: var(--space-sm);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── 7. HERO SECTION ────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 0 80px;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  pointer-events: none;
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {

  0%,
  100% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1);
  }

  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  animation: fadeUp 0.9s var(--ease) both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent-lt);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--r-full);
  padding: 8px 18px;
  margin-bottom: var(--space-md);
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--clr-accent);
  border-radius: 50%;
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

.hero-title {
  font-size: clamp(2.25rem, 6vw, var(--text-5xl));
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--clr-white);
  margin-bottom: var(--space-sm);
  animation: fadeUp 0.9s 0.1s var(--ease) both;
}

.hero-slogan {
  font-size: clamp(var(--text-lg), 3vw, var(--text-xl));
  font-weight: 500;
  color: var(--clr-muted);
  font-style: italic;
  margin-bottom: var(--space-md);
  animation: fadeUp 0.9s 0.2s var(--ease) both;
}

.hero-desc {
  font-size: var(--text-md);
  color: var(--clr-muted);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  animation: fadeUp 0.9s 0.3s var(--ease) both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  animation: fadeUp 0.9s 0.4s var(--ease) both;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  animation: fadeUp 0.9s 0.5s var(--ease) both;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--clr-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--clr-border);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 2;
}

.hero-scroll span {
  display: block;
  width: 20px;
  height: 32px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--r-full);
  position: relative;
}

.hero-scroll span::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 2px;
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0% {
    top: 5px;
    opacity: 1;
  }

  80% {
    top: 16px;
    opacity: 0;
  }

  100% {
    top: 5px;
    opacity: 0;
  }
}

/* ── 8. SERVICES SECTION ────────────────────────────────────── */
.services {
  background: var(--clr-bg-2);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.service-card {
  padding: var(--space-lg);
  border-radius: var(--r-xl);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-hero);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.2);
}

.service-card:hover::before {
  opacity: 1;
}

.card-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--clr-border);
  margin-bottom: var(--space-md);
  transition: background var(--dur) var(--ease);
}

.card-icon-wrap.accent {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.25);
}

.card-icon-wrap svg {
  width: 24px;
  height: 24px;
  stroke: var(--clr-muted);
  transition: stroke var(--dur) var(--ease);
}

.card-icon-wrap.accent svg {
  stroke: var(--clr-accent-lt);
}

.service-card:hover .card-icon-wrap svg {
  stroke: var(--clr-accent-lt);
}

.service-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--clr-muted);
  font-size: var(--text-sm);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.card-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: var(--space-md);
}

.card-features li {
  font-size: var(--text-sm);
  color: var(--clr-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-features li::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-accent);
  flex-shrink: 0;
}

.card-cta {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-accent-lt);
  transition: color var(--dur) var(--ease), gap var(--dur) var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card-cta:hover {
  color: var(--clr-white);
}

/* ── 9. DIFFERENTIALS ───────────────────────────────────────── */
.differentials {
  background: var(--clr-bg-3);
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.diff-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  padding: var(--space-lg);
  transition: all var(--dur) var(--ease);
}

.diff-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(59, 130, 246, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.diff-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.diff-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--clr-accent-lt);
}

.diff-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: var(--space-xs);
}

.diff-card p {
  font-size: var(--text-sm);
  color: var(--clr-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.diff-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: var(--space-md);
  border-top: 1px solid var(--clr-border);
}

.metric-num {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--clr-accent-lt);
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: var(--text-xs);
  color: var(--clr-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── 10. PORTFOLIO ──────────────────────────────────────────── */
.portfolio {
  background: var(--clr-bg-2);
}

.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: var(--r-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-muted);
  border: 1px solid var(--clr-border);
  background: transparent;
  transition: all var(--dur) var(--ease);
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--clr-white);
  background: var(--clr-accent);
  border-color: transparent;
  box-shadow: 0 0 20px var(--clr-accent-glow);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 260px;
  gap: var(--space-sm);
}

.portfolio-item {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  cursor: pointer;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.portfolio-item.large {
  grid-row: span 2;
}

.portfolio-item.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.95);
  display: none;
}

.portfolio-img-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.portfolio-placeholder {
  position: absolute;
  inset: 0;
  transition: transform 0.5s var(--ease);
}

.portfolio-item:hover .portfolio-placeholder {
  transform: scale(1.06);
}

.p1 {
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
}

.p2 {
  background: linear-gradient(135deg, #1a1a2e 0%, #7c3aed 60%, #3b82f6 100%);
}

.p3 {
  background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
}

.p4 {
  background: linear-gradient(135deg, #1a2a1a 0%, #166534 100%);
}

.p5 {
  background: linear-gradient(135deg, #2d1b69 0%, #11998e 100%);
}

.p6 {
  background: linear-gradient(135deg, #3a0000 0%, #b71c1c 100%);
}

/* Decorative pattern overlay */
.portfolio-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg,
      rgba(255, 255, 255, 0.03) 0px, rgba(255, 255, 255, 0.03) 1px,
      transparent 1px, transparent 12px);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.2) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.port-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--clr-accent-lt);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.port-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.port-desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-sm);
}

/* ── 11. CTA BAND ───────────────────────────────────────────── */
.cta-band {
  background: var(--clr-bg-3);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-accent-glow), transparent);
  pointer-events: none;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.cta-text h2 {
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.cta-text p {
  color: var(--clr-muted);
  font-size: var(--text-md);
}

/* ── 12. CONTACT SECTION ────────────────────────────────────── */
.contact {
  background: var(--clr-bg);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: var(--space-sm);
}

.contact-info p {
  color: var(--clr-muted);
  font-size: var(--text-sm);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--clr-muted);
  font-size: var(--text-sm);
  transition: color var(--dur) var(--ease);
}

.contact-list li:hover {
  color: var(--clr-text);
}

.contact-list li svg {
  width: 18px;
  height: 18px;
  stroke: var(--clr-accent);
  flex-shrink: 0;
}

.contact-social {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  transition: all var(--dur) var(--ease);
}

.social-link svg {
  width: 18px;
  height: 18px;
  stroke: var(--clr-muted);
  transition: stroke var(--dur) var(--ease);
}

.social-link:hover {
  border-color: var(--clr-accent);
  background: rgba(59, 130, 246, 0.1);
}

.social-link:hover svg {
  stroke: var(--clr-accent-lt);
}

/* Form */
.contact-form {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

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

.form-group.full {
  grid-column: 1/-1;
}

label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-muted);
}

input,
textarea,
select {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  padding: 12px 16px;
  color: var(--clr-text);
  font-size: var(--text-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  width: 100%;
  -webkit-appearance: none;
}

textarea {
  resize: vertical;
  min-height: 140px;
}

select {
  appearance: none;
  -webkit-appearance: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--clr-subtle);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input:invalid:not(:placeholder-shown),
textarea:invalid:not(:placeholder-shown) {
  border-color: #ef4444;
}

.form-note {
  font-size: var(--text-xs);
  color: var(--clr-subtle);
  text-align: center;
}

.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #4ade80;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.2);
  padding: 14px 20px;
  border-radius: var(--r-md);
  font-size: var(--text-sm);
  font-weight: 500;
}

.form-success svg {
  width: 20px;
  height: 20px;
  stroke: #4ade80;
  flex-shrink: 0;
}

/* ── 13. FOOTER ─────────────────────────────────────────────── */
.footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  padding: var(--space-xl) var(--space-md);
}

.footer-brand .logo {
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--clr-accent-lt);
  margin-bottom: var(--space-xs);
}

.footer-desc {
  font-size: var(--text-sm);
  color: var(--clr-subtle);
  line-height: 1.7;
}

.footer-nav h4,
.footer-services h4,
.footer-contact h4 {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}

.footer-nav ul li,
.footer-services ul li {
  margin-bottom: 10px;
}

.footer-nav ul li a,
.footer-services ul li a {
  font-size: var(--text-sm);
  color: var(--clr-subtle);
  transition: color var(--dur) var(--ease);
}

.footer-nav ul li a:hover,
.footer-services ul li a:hover {
  color: var(--clr-text);
}

.footer-contact p {
  font-size: var(--text-sm);
  color: var(--clr-subtle);
  margin-bottom: 8px;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: var(--space-sm);
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--clr-border);
  border-radius: var(--r-sm);
  transition: all var(--dur) var(--ease);
}

.footer-social a svg {
  width: 16px;
  height: 16px;
  stroke: var(--clr-subtle);
  transition: stroke var(--dur) var(--ease);
}

.footer-social a:hover {
  border-color: var(--clr-accent);
  background: rgba(59, 130, 246, 0.1);
}

.footer-social a:hover svg {
  stroke: var(--clr-accent-lt);
}

.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding: var(--space-md) var(--space-md);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--clr-subtle);
}

.heart {
  color: #ef4444;
}

/* ── 14. BACK TO TOP ────────────────────────────────────────── */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-accent);
  border-radius: var(--r-md);
  box-shadow: 0 0 20px var(--clr-accent-glow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  z-index: 999;
}

.back-top.visible {
  opacity: 1;
  pointer-events: all;
}

.back-top:hover {
  transform: translateY(-3px);
}

.back-top svg {
  width: 20px;
  height: 20px;
  stroke: #fff;
}

/* ── 15. WHATSAPP INTEGRATION ───────────────────────────────── */

/* Floating WhatsApp Button */
.wa-float {
  position: fixed;
  bottom: 88px;
  right: 32px;
  width: 54px;
  height: 54px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(37, 211, 102, 0.45);
  z-index: 998;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  animation: waPulse 2.5s ease-in-out infinite;
}

.wa-float svg {
  width: 28px;
  height: 28px;
  color: #fff;
  flex-shrink: 0;
}

.wa-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 32px rgba(37, 211, 102, 0.65);
  animation: none;
}

@keyframes waPulse {

  0%,
  100% {
    box-shadow: 0 4px 24px rgba(37, 211, 102, 0.45);
  }

  50% {
    box-shadow: 0 4px 40px rgba(37, 211, 102, 0.75), 0 0 0 8px rgba(37, 211, 102, 0.1);
  }
}

/* Tooltip */
.wa-float-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: #111318;
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
  padding: 6px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--clr-border);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}

.wa-float-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: #111318;
}

.wa-float:hover .wa-float-tooltip {
  opacity: 1;
}

/* WhatsApp green button variant */
.btn-wa {
  background: #25d366;
  color: #fff;
  box-shadow: 0 0 20px rgba(37, 211, 102, 0.3);
}

.btn-wa:hover {
  background: #20b858;
  box-shadow: 0 0 36px rgba(37, 211, 102, 0.5);
  transform: translateY(-2px);
}

.btn-wa:active {
  transform: translateY(0);
}

/* Form actions: two buttons stacked */
.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

/* Contact phone as WA link */
.contact-list li .contact-wa-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--clr-muted);
  font-size: var(--text-sm);
  transition: color var(--dur) var(--ease);
  text-decoration: none;
}

.contact-wa-link:hover {
  color: #25d366;
}

.contact-wa-link:hover svg {
  stroke: #25d366;
}

.contact-wa-link svg {
  width: 18px;
  height: 18px;
  stroke: var(--clr-accent);
  flex-shrink: 0;
  transition: stroke var(--dur) var(--ease);
}

/* WA badge pill next to phone */
.wa-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #25d366;
  background: rgba(37, 211, 102, 0.12);
  border: 1px solid rgba(37, 211, 102, 0.3);
  border-radius: var(--r-full);
  padding: 2px 8px;
  flex-shrink: 0;
}

/* ── 16. SCROLL 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);
}

.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;
}

/* ── 16. RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .diff-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .portfolio-item.large {
    grid-row: auto;
  }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --space-xl: 3rem;
  }

  .hide-sm {
    display: none;
  }

  /* Navbar */
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 15, 20, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-lg);
    transform: translateX(100%);
    transition: transform 0.3s var(--ease);
    z-index: 999;
  }

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

  .nav-links a:not(.btn) {
    font-size: var(--text-xl);
  }

  /* Hero */
  .hero-stats {
    gap: var(--space-md);
  }

  .stat-divider {
    display: none;
  }

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

  .hero-actions .btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

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

  /* Differentials */
  .diff-grid {
    grid-template-columns: 1fr;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 220px;
  }

  .portfolio-item.large {
    grid-row: auto;
  }

  .portfolio-overlay {
    opacity: 1;
  }

  /* CTA Band */
  .cta-inner {
    flex-direction: column;
    text-align: center;
  }

  .cta-inner .btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  /* Contact */
  .contact-wrapper {
    grid-template-columns: 1fr;
  }

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

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-sm);
  }
}