/* =====================================================
   AVNEET DIGITAL — style.css
   Design System: Dark Industrial / High-Contrast Neon
   Fonts: Bebas Neue (display) + DM Sans (body) + JetBrains Mono (code/tags)
   ===================================================== */

/* ─── CSS Custom Properties ─────────────────────────── */
:root {
  /* Color Palette */
  --clr-bg:          #090910;
  --clr-bg-2:        #0e0e18;
  --clr-bg-3:        #13131f;
  --clr-surface:     #16162a;
  --clr-surface-2:   #1d1d35;
  --clr-border:      rgba(255,255,255,0.07);
  --clr-border-2:    rgba(255,255,255,0.12);

  --clr-accent:      #00e5ff;
  --clr-accent-2:    #7c3aed;
  --clr-accent-glow: rgba(0, 229, 255, 0.18);
  --clr-accent-dark: rgba(0, 229, 255, 0.06);
  --clr-neon-green:  #39ff99;
  --clr-neon-orange: #ff6b35;

  --clr-text:        #f0f0f8;
  --clr-text-2:      #9898b8;
  --clr-text-3:      #5f5f85;
  --clr-white:       #ffffff;

  /* Typography */
  --font-display:    'Bebas Neue', cursive;
  --font-body:       'DM Sans', sans-serif;
  --font-mono:       'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  4rem;
  --space-4xl:  6rem;
  --space-5xl:  8rem;

  /* Sizing */
  --container:  1240px;
  --nav-h:      72px;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;
  --radius-full: 999px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast:     0.15s;
  --t-base:     0.25s;
  --t-slow:     0.45s;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.35);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.45);
  --shadow-lg:  0 20px 60px rgba(0,0,0,0.6);
  --glow-accent:0 0 30px rgba(0, 229, 255, 0.25);
  --glow-strong:0 0 60px rgba(0, 229, 255, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul { list-style: none; }

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

/* ─── Utility ────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

.text-accent { color: var(--clr-accent); }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dark);
  border: 1px solid rgba(0,229,255,0.2);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-accent);
  box-shadow: 0 0 8px var(--clr-accent);
  animation: pulseDot 2s ease infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--clr-white);
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.1rem);
  color: var(--clr-text-2);
  max-width: 620px;
  margin-inline: auto;
  line-height: 1.7;
}

/* ─── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: all var(--t-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  transition: opacity var(--t-fast);
}

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

.btn--primary {
  background: var(--clr-accent);
  color: var(--clr-bg);
  box-shadow: 0 0 20px rgba(0,229,255,0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-strong);
}

.btn--secondary {
  background: transparent;
  color: var(--clr-accent);
  border: 1.5px solid var(--clr-accent);
}

.btn--secondary:hover {
  background: var(--clr-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--glow-accent);
}

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

.btn-icon { font-size: 1.05em; }

.btn-loading { display: none; }
.btn.loading .btn-text   { display: none; }
.btn.loading .btn-loading { display: inline; }

/* ─── HEADER & NAVBAR ────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
}

.navbar {
  height: 100%;
  background: rgba(9, 9, 16, 0.72);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--t-base), box-shadow var(--t-base);
}

.navbar.scrolled {
  background: rgba(9, 9, 16, 0.95);
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}

.nav-container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--clr-accent);
  color: var(--clr-bg);
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.05em;
  box-shadow: 0 0 16px rgba(0,229,255,0.4);
  transition: box-shadow var(--t-base);
}

.nav-logo:hover .logo-mark {
  box-shadow: var(--glow-strong);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  color: var(--clr-white);
}

.logo-accent { color: var(--clr-accent); }

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

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-2);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: color var(--t-base), background var(--t-base);
  letter-spacing: 0.01em;
}

.nav-link:hover,
.nav-link.active { color: var(--clr-white); background: rgba(255,255,255,0.06); }

.nav-link--cta {
  background: var(--clr-accent);
  color: var(--clr-bg);
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  box-shadow: 0 0 14px rgba(0,229,255,0.25);
}

.nav-link--cta:hover {
  background: var(--clr-accent);
  color: var(--clr-bg);
  box-shadow: var(--glow-accent);
  transform: translateY(-1px);
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px; height: 40px;
  padding: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border-2);
  transition: border-color var(--t-base);
  flex-shrink: 0;
}

.burger:hover { border-color: var(--clr-accent); }

.burger-line {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--clr-text);
  border-radius: 2px;
  transform-origin: center;
  transition: transform var(--t-base) var(--ease-out),
              opacity var(--t-base),
              width var(--t-base);
}

/* Burger → X animation */
.burger.open .burger-line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.open .burger-line:nth-child(2) { opacity: 0; width: 0; }
.burger.open .burger-line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(9, 9, 16, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
  z-index: 999;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  text-align: center;
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3rem);
  letter-spacing: 0.08em;
  color: var(--clr-text-2);
  transition: color var(--t-base), letter-spacing var(--t-base);
}

.mobile-nav-link:hover      { color: var(--clr-white); letter-spacing: 0.12em; }
.mobile-nav-link--cta       { color: var(--clr-accent); }
.mobile-nav-link--cta:hover { text-shadow: var(--glow-accent); }

/* ─── HERO SECTION ───────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

/* Background layers */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.hero-glow--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,229,255,0.25), transparent 70%);
  top: -200px; left: -100px;
  animation: floatA 12s ease-in-out infinite;
}

.hero-glow--2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,0.2), transparent 70%);
  bottom: -150px; right: -80px;
  animation: floatB 15s ease-in-out infinite;
}

.hero-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.025;
}

@keyframes floatA {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(60px, 40px) scale(1.08); }
  66%       { transform: translate(-40px, 60px) scale(0.95); }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40%       { transform: translate(-50px, -40px) scale(1.1); }
  70%       { transform: translate(30px, 50px) scale(0.92); }
}

/* Hero Ticker */
.hero-ticker {
  position: absolute;
  /* FIX: sit flush below the navbar, not 1rem lower which caused overlap */
  top: var(--nav-h);
  left: 0; right: 0;
  overflow: hidden;
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  background: rgba(0,229,255,0.03);
  padding: 0.55rem 0;
  z-index: 1;
  pointer-events: none;
}

.ticker-track {
  display: flex;
  gap: var(--space-xl);
  width: max-content;
  animation: ticker 28s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  white-space: nowrap;
  will-change: transform;
}

.ticker-dot { color: var(--clr-accent); }

@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 2;
  /* FIX: extra top padding to clear the absolute ticker bar (~2.5rem tall) */
  padding-top: clamp(5rem, 10vw, 8rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-neon-green);
  background: rgba(57, 255, 153, 0.06);
  border: 1px solid rgba(57, 255, 153, 0.2);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.6s var(--ease-out) both;
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--clr-neon-green);
  box-shadow: 0 0 8px var(--clr-neon-green);
  animation: pulseDot 2s ease infinite;
  flex-shrink: 0;
}

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7.5vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--clr-white);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.7s 0.1s var(--ease-out) both;
}

.heading-accent {
  color: var(--clr-accent);
  text-shadow: 0 0 40px rgba(0,229,255,0.4);
}

.heading-outline {
  -webkit-text-stroke: 1.5px rgba(255,255,255,0.35);
  color: transparent;
}

.hero-subheading {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--clr-text-2);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.7s 0.2s var(--ease-out) both;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.7s 0.3s var(--ease-out) both;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--clr-accent);
  line-height: 1;
  letter-spacing: 0.02em;
}

.stat-suffix {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--clr-accent);
  opacity: 0.7;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--clr-text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--clr-border-2);
  flex-shrink: 0;
}

/* Hero CTAs */
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  animation: fadeInUp 0.7s 0.4s var(--ease-out) both;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  z-index: 2;
  animation: fadeInUp 1s 0.8s var(--ease-out) both;
}

.scroll-arrow {
  width: 16px; height: 28px;
  border: 1.5px solid var(--clr-text-3);
  border-radius: 8px;
  position: relative;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px; height: 6px;
  background: var(--clr-accent);
  border-radius: 2px;
  animation: scrollDown 1.8s ease infinite;
}

@keyframes scrollDown {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  80%  { opacity: 0; transform: translateX(-50%) translateY(10px); }
  100% { opacity: 0; transform: translateX(-50%) translateY(0); }
}

/* Shared fade-in animation */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── SERVICES SECTION ───────────────────────────────── */
.services {
  padding-block: clamp(4rem, 10vw, 8rem);
  background: var(--clr-bg-2);
  position: relative;
  overflow: hidden;
}

.services::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-accent), transparent);
  opacity: 0.4;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  overflow: hidden;
  transition: transform var(--t-base) var(--ease-out),
              border-color var(--t-base),
              box-shadow var(--t-base);
  cursor: default;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 0%, rgba(0,229,255,0.06), transparent 60%);
  opacity: 0;
  transition: opacity var(--t-slow);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,229,255,0.25);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0,229,255,0.1);
}

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

.service-card__icon {
  color: var(--clr-accent);
  margin-bottom: var(--space-lg);
  transition: transform var(--t-base) var(--ease-spring);
}

.service-card:hover .service-card__icon { transform: scale(1.1) rotate(-3deg); }

.service-card__number {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  font-family: var(--font-display);
  font-size: 3rem;
  color: rgba(255,255,255,0.04);
  letter-spacing: 0.05em;
  line-height: 1;
  transition: color var(--t-base);
  pointer-events: none;
}

.service-card:hover .service-card__number { color: rgba(0,229,255,0.07); }

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.65rem;
  letter-spacing: 0.04em;
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}

.service-card__desc {
  font-size: 0.9rem;
  color: var(--clr-text-2);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.service-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dark);
  border: 1px solid rgba(0,229,255,0.15);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.service-card__hover-line {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-2));
  transition: width var(--t-slow) var(--ease-out);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.service-card:hover .service-card__hover-line { width: 100%; }

/* ─── PORTFOLIO SECTION ──────────────────────────────── */
.portfolio {
  padding-block: clamp(4rem, 10vw, 8rem);
  background: var(--clr-bg);
}

/* Tabs */
.portfolio-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-2xl);
}

.tab-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-full);
  transition: all var(--t-base) var(--ease-out);
}

.tab-btn:hover { color: var(--clr-text); border-color: var(--clr-border-2); }

.tab-btn--active,
.tab-btn[aria-selected="true"] {
  color: var(--clr-bg);
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  box-shadow: 0 0 16px rgba(0,229,255,0.3);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.portfolio-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--t-base) var(--ease-out),
              border-color var(--t-base),
              box-shadow var(--t-base);
  position: relative;
}

.portfolio-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,229,255,0.2);
  box-shadow: var(--shadow-lg), 0 0 24px rgba(0,229,255,0.08);
}

.portfolio-card--featured {
  border-color: rgba(0,229,255,0.2);
  background: linear-gradient(160deg, var(--clr-surface-2), var(--clr-surface));
}

.portfolio-card__figure { margin: 0; }

.portfolio-card__img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.portfolio-card__img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--t-slow) var(--ease-out),
              filter var(--t-slow);
  filter: saturate(0.7) brightness(0.85);
}

.portfolio-card:hover .portfolio-card__img {
  transform: scale(1.06);
  filter: saturate(1) brightness(0.9);
}

.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,229,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t-base);
}

.portfolio-card:hover .portfolio-card__overlay { opacity: 1; }

.overlay-cta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: rgba(9,9,16,0.85);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--clr-accent);
  transform: translateY(8px);
  transition: transform var(--t-base) var(--ease-spring);
}

.portfolio-card:hover .overlay-cta { transform: translateY(0); }

.portfolio-card__body {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

.portfolio-card__industry {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dark);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0,229,255,0.15);
}

.portfolio-card__location {
  font-size: 0.78rem;
  color: var(--clr-text-3);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.portfolio-card__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.03em;
  color: var(--clr-white);
  line-height: 1.2;
}

.challenge-label,
.result-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.35rem;
}

.challenge-label {
  color: var(--clr-neon-orange);
  background: rgba(255,107,53,0.08);
  border: 1px solid rgba(255,107,53,0.2);
}

.result-label {
  color: var(--clr-neon-green);
  background: rgba(57,255,153,0.06);
  border: 1px solid rgba(57,255,153,0.2);
}

.portfolio-card__challenge p,
.portfolio-card__result p {
  font-size: 0.85rem;
  color: var(--clr-text-2);
  line-height: 1.65;
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.portfolio-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border);
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-full);
}

.portfolio-card__badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-bg);
  background: var(--clr-accent);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  box-shadow: 0 0 12px rgba(0,229,255,0.4);
}

/* Filtered-out state */
.portfolio-card.hidden {
  display: none !important;
}

/* Ensure revealed cards inside filter stay visible */
.portfolio-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── ABOUT SECTION ──────────────────────────────────── */
.about {
  padding-block: clamp(4rem, 10vw, 8rem);
  background: var(--clr-bg-2);
  position: relative;
  overflow: hidden;
}

.about::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124,58,237,0.5), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

/* About Visual / Card Stack */
.about-visual {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-card-stack { position: relative; width: 310px; height: 360px; }

.about-card {
  position: absolute;
  width: 290px; height: 340px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--clr-border);
}

.about-card--back {
  background: var(--clr-bg-3);
  transform: rotate(-6deg) translateY(10px);
  left: 20px;
  top: 10px;
  border-color: rgba(124,58,237,0.15);
}

.about-card--mid {
  background: var(--clr-surface);
  transform: rotate(-2.5deg) translateY(4px);
  left: 8px;
  top: 4px;
}

.about-card--front {
  background: linear-gradient(145deg, var(--clr-surface-2), var(--clr-surface));
  border-color: rgba(0,229,255,0.15);
  box-shadow: var(--shadow-lg), var(--glow-accent);
  animation: cardFloat 5s ease-in-out infinite;
  width: 290px; height: 340px;
  /* FIX: position absolute like other cards so stack renders correctly */
  position: absolute;
  left: 0;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-10px) rotate(0.5deg); }
}

.about-card__inner {
  padding: var(--space-2xl) var(--space-xl);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-lg);
}

.about-card__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  width: 50px; height: 50px;
  background: var(--clr-accent);
  color: var(--clr-bg);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  letter-spacing: 0.05em;
  box-shadow: 0 0 20px rgba(0,229,255,0.4);
}

.about-card__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  color: var(--clr-white);
}

.about-card__sub {
  font-size: 0.78rem;
  color: var(--clr-text-2);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.about-card__metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  border-top: 1px solid var(--clr-border);
  padding-top: var(--space-lg);
}

.about-card__metrics li {
  font-size: 0.82rem;
  color: var(--clr-text-2);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.about-card__metrics li span {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--clr-accent);
  letter-spacing: 0.03em;
  min-width: 45px;
}

.about-circle-decor {
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  border: 1px dashed rgba(0,229,255,0.1);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation: rotateSlow 30s linear infinite;
  pointer-events: none;
}

.about-circle-decor::before {
  content: '';
  position: absolute;
  width: 8px; height: 8px;
  background: var(--clr-accent);
  border-radius: 50%;
  top: -4px; left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 10px var(--clr-accent);
}

@keyframes rotateSlow {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* About Content */
.about-content { display: flex; flex-direction: column; gap: var(--space-lg); }

.about-text {
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  color: var(--clr-text-2);
  line-height: 1.8;
}

.about-pillars {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-block: var(--space-lg);
}

.pillar {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  transition: border-color var(--t-base), background var(--t-base);
}

.pillar:hover {
  border-color: rgba(0,229,255,0.2);
  background: var(--clr-surface-2);
}

.pillar-icon { font-size: 1.4rem; flex-shrink: 0; }

.pillar strong {
  display: block;
  font-size: 0.95rem;
  color: var(--clr-white);
  margin-bottom: 4px;
}

.pillar p {
  font-size: 0.82rem;
  color: var(--clr-text-3);
  line-height: 1.6;
}

/* ─── CONTACT SECTION ────────────────────────────────── */
.contact {
  padding-block: clamp(4rem, 10vw, 8rem);
  background: var(--clr-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

/* Contact Info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-info__block {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: border-color var(--t-base);
}

.contact-info__block:hover { border-color: rgba(0,229,255,0.2); }

.contact-info__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--clr-white);
}

.contact-info__block p {
  font-size: 0.88rem;
  color: var(--clr-text-2);
  line-height: 1.65;
}

.contact-btn { align-self: flex-start; }

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

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: var(--clr-text-2);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--clr-border);
  transition: color var(--t-base);
}

.contact-link:hover { color: var(--clr-accent); }
.contact-link:last-child { border-bottom: none; }
.contact-link__icon { font-size: 1rem; flex-shrink: 0; }

/* Contact Form */
.contact-form-wrap {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

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

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

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

.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text-2);
  letter-spacing: 0.02em;
}

.form-label--hint {
  font-size: 0.75rem;
  color: var(--clr-text-3);
}

.required { color: var(--clr-accent); }

.form-input {
  background: var(--clr-bg-3);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--clr-text);
  outline: none;
  transition: border-color var(--t-base), box-shadow var(--t-base), background var(--t-base);
  width: 100%;
  -webkit-appearance: none;
}

.form-input::placeholder { color: var(--clr-text-3); }

.form-input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.1);
  background: var(--clr-bg-2);
}

.form-input.error  {
  border-color: #ff4d6d;
  box-shadow: 0 0 0 3px rgba(255,77,109,0.1);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235f5f85' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-error {
  font-size: 0.75rem;
  color: #ff4d6d;
  min-height: 1rem;
  font-family: var(--font-mono);
}

/* Custom Checkbox */
.form-consent { display: flex; flex-direction: column; gap: var(--space-xs); }

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.82rem;
  color: var(--clr-text-3);
  cursor: pointer;
  line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.checkbox-custom {
  width: 18px; height: 18px;
  border: 1.5px solid var(--clr-border-2);
  border-radius: 4px;
  background: var(--clr-bg-3);
  flex-shrink: 0;
  margin-top: 1px;
  display: grid;
  place-items: center;
  transition: all var(--t-base);
}

.checkbox-label input:checked + .checkbox-custom {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
}

.checkbox-label input:checked + .checkbox-custom::after {
  content: '';
  width: 5px; height: 9px;
  border: 2px solid var(--clr-bg);
  border-top: none; border-left: none;
  transform: rotate(45deg) translateY(-1px);
}

/* Form feedback */
.form-success {
  display: none;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(57,255,153,0.06);
  border: 1px solid rgba(57,255,153,0.2);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  font-size: 0.9rem;
  color: var(--clr-neon-green);
}

.form-success[aria-hidden="false"] { display: flex; }

.success-icon { font-size: 1.1rem; }

/* ─── FOOTER ─────────────────────────────────────────── */
.site-footer {
  background: var(--clr-bg-2);
  border-top: 1px solid var(--clr-border);
  padding-top: clamp(3rem, 7vw, 5rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--clr-border);
}

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

.footer-tagline {
  font-size: 0.88rem;
  color: var(--clr-text-3);
  line-height: 1.7;
  max-width: 300px;
}

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

.social-link {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text-3);
  transition: all var(--t-base);
}

.social-link:hover {
  color: var(--clr-accent);
  border-color: rgba(0,229,255,0.3);
  background: var(--clr-accent-dark);
  box-shadow: var(--glow-accent);
}

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

.footer-nav__title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  margin-bottom: var(--space-xs);
}

.footer-nav ul,
.footer-contact ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a,
.footer-contact a {
  font-size: 0.88rem;
  color: var(--clr-text-2);
  transition: color var(--t-base), transform var(--t-base);
  display: inline-block;
}

.footer-nav a:hover,
.footer-contact a:hover {
  color: var(--clr-accent);
  transform: translateX(4px);
}

.footer-contact li {
  font-size: 0.88rem;
  color: var(--clr-text-2);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-block: var(--space-xl);
}

.footer-copy,
.footer-legal {
  font-size: 0.8rem;
  color: var(--clr-text-3);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.footer-legal a {
  color: var(--clr-text-3);
  transition: color var(--t-base);
}

.footer-legal a:hover { color: var(--clr-accent); }

/* ─── REVEAL ANIMATION (Intersection Observer) ───────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}

.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; }

/* ─── RESPONSIVE ─────────────────────────────────────── */

/* Large Tablet / Small Desktop  (max 1024px) */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { height: 280px; margin-bottom: var(--space-xl); order: -1; }
  .about-card--front,
  .about-card { width: 260px; height: 300px; }

  .contact-grid { grid-template-columns: 1fr; }
  .contact-info { flex-direction: row; flex-wrap: wrap; }
  .contact-info__block { flex: 1; min-width: 240px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
  .footer-brand { grid-column: span 2; }
}

/* Tablet (max 768px) */
@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  .nav-links { display: none; }
  .burger    { display: flex; }

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

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

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

  .hero-stats { gap: var(--space-lg); }
  .stat-number { font-size: 1.8rem; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }

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

  .contact-info { flex-direction: column; }
  .contact-info__block { min-width: unset; }
}

/* Mobile (max 480px) */
@media (max-width: 480px) {
  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-md);
  }
  .stat-divider { display: none; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }

  .portfolio-tabs { gap: var(--space-xs); }
  .tab-btn { padding: 0.45rem 0.9rem; font-size: 0.68rem; }

  .about-visual { display: none; }
}

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