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

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

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

/* ============================
   CSS VARIABLES
============================ */
:root {
  --primary: #0066ff;
  --primary-dark: #0052cc;
  --primary-light: #e8f0fe;
  --secondary: #00c896;
  --secondary-dark: #00a87d;
  --accent: #ff6b35;
  --accent-light: #fff0eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;

  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --surface-strong: #f1f5f9;
  --text: #1a1a2e;
  --muted: #64748b;
  --border: rgba(15,23,42,0.08);
  --header-bg: rgba(255,255,255,0.95);
  --header-shadow: var(--shadow-sm);
  --surface-active: var(--primary-light);

  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-blue: 0 8px 32px rgba(0,102,255,0.25);

  --transition: 0.25s ease;
  --transition-slow: 0.4s ease;

  --header-height: 72px;
}

body.dark {
  --bg: #0b1220;
  --surface: #111827;
  --surface-alt: #1f2937;
  --surface-strong: #111827;
  --text: #f8fafc;
  --muted: #d1d5db;
  --border: rgba(148,163,184,0.18);
  --header-bg: rgba(15,23,42,0.92);
  --header-shadow: 0 10px 30px rgba(0,0,0,0.24);
  --surface-active: rgba(0,102,255,0.16);
  --primary-light: #1d4ed8;
  --neutral-50: #0f172a;
  --neutral-100: #111827;
  --neutral-200: #1f2937;
  --neutral-300: #334155;
  --neutral-400: #9ca3af;
  --neutral-500: #d1d5db;
  --neutral-600: #e5e7eb;
  --neutral-700: #f3f4f6;
  --neutral-800: #f8fafc;
  --neutral-900: #ffffff;
}

/* ============================
   UTILITIES
============================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: var(--font-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(0,102,255,0.15);
}

.badge--dark {
  background: var(--neutral-100);
  color: var(--neutral-700);
  border-color: var(--neutral-200);
}

body.dark .badge {
  background: rgba(248,250,252,0.08);
  color: var(--text);
  border-color: rgba(248,250,252,0.16);
}

body.dark .badge--dark {
  background: rgba(148,163,184,0.18);
  color: var(--text);
  border-color: rgba(148,163,184,0.28);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

body.dark .about .btn--primary:hover {
  background: #ffffff;
  color: #000000;
  border-color: rgba(0, 0, 0, 0.12);
}

body.dark .nav__item--cta .btn--primary:hover {
  background: #ffffff;
  color: #000000;
  border-color: rgba(0, 0, 0, 0.12);
}

.btn--outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn--outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

body.dark .hero__actions .btn--outline:hover {
  background: #ffffff;
  color: #000000;
  border-color: rgba(0, 0, 0, 0.12);
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn--full {
  width: 100%;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: var(--font-extrabold);
  line-height: 1.2;
  color: var(--neutral-900);
}

.section-description {
  font-size: 1.05rem;
  color: var(--neutral-500);
  line-height: 1.7;
}

/* ============================
   HEADER / NAV
============================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--header-shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: var(--font-bold);
  color: var(--text);
  transition: opacity var(--transition);
}

.nav__logo:hover {
  opacity: 0.8;
}

.nav__logo strong {
  color: #003366;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #003366, #0066cc);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: var(--font-extrabold);
  font-size: 1rem;
  flex-shrink: 0;
}

.nav__logo--footer .nav__logo-icon {
  width: 32px;
  height: 32px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  display: block;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: var(--font-medium);
  color: var(--muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary);
  background: var(--surface-active);
}

.nav__item--cta {
  margin-left: 8px;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav__toggle:hover {
  background: var(--surface-alt);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

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

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-size: 1rem;
  transition: all var(--transition);
}

.theme-toggle:hover {
  transform: translateY(-1px);
  background: var(--surface-strong);
}

/* ============================
   HERO
============================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: linear-gradient(160deg, #f0f4ff 0%, #fafffe 50%, #f8fafc 100%);
}

body.dark .hero {
  background: linear-gradient(160deg, #0b1220 0%, #111827 50%, #0f172a 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
}

.hero__circle--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,102,255,0.3) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.hero__circle--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0,200,150,0.25) 0%, transparent 70%);
  bottom: -50px;
  left: -80px;
}

.hero__circle--3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,107,53,0.2) 0%, transparent 70%);
  top: 50%;
  left: 40%;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 64px;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero__title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: var(--font-extrabold);
  line-height: 1.15;
  color: var(--text);
}

.hero__description {
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.75;
  max-width: 500px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: 24px;
  padding-top: 8px;
}

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

.hero__stat-label {
  font-size: 0.78rem;
  color: var(--neutral-400);
  font-weight: var(--font-medium);
}

.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: var(--neutral-200);
}

.hero__visual {
  position: relative;
  height: 480px;
}

.hero__card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

.hero__card--main {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 320px;
  overflow: hidden;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(-50%, -50%) translateY(0px); }
  50% { transform: translate(-50%, -50%) translateY(-12px); }
}

.hero__card-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

.hero__card-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.hero__card-dot--red { background: #ff5f57; }
.hero__card-dot--yellow { background: #febc2e; }
.hero__card-dot--green { background: #28c840; }

.hero__card-body {
  padding: 20px;
  font-family: 'Courier New', monospace;
  font-size: 0.82rem;
  line-height: 1.8;
}

.hero__code-line { display: flex; align-items: center; gap: 6px; }
.hero__code-line.indent { padding-left: 16px; }
.hero__code-line.indent2 { padding-left: 32px; }

.code-tag { color: #0066ff; }
.code-attr { color: #e67e22; }
.code-val { color: #27ae60; }
.code-comment { color: #95a5a6; font-style: italic; }

.hero__card--float {
  position: absolute;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero__card--float-1 {
  top: 40px;
  right: -20px;
  animation: float-r 5s ease-in-out infinite 1s;
}

@keyframes float-r {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.hero__card--float-2 {
  bottom: 60px;
  left: -20px;
  min-width: 200px;
  animation: float-l 5s ease-in-out infinite 2s;
}

@keyframes float-l {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.hero__card-emoji {
  font-size: 1.5rem;
}

.hero__card-mini-title {
  font-size: 0.82rem;
  font-weight: var(--font-semibold);
  color: var(--neutral-800);
}

.hero__card-mini-sub {
  font-size: 0.72rem;
  color: var(--neutral-400);
}

.hero__perf-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
}

.hero__perf-label {
  font-size: 0.78rem;
  font-weight: var(--font-medium);
  color: var(--neutral-700);
  white-space: nowrap;
}

.hero__perf-track {
  flex: 1;
  height: 6px;
  background: var(--neutral-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.hero__perf-fill {
  height: 100%;
  width: 97%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
}

.hero__perf-value {
  font-size: 0.9rem;
  font-weight: var(--font-bold);
  color: var(--success);
}

/* ============================
   SERVICES
============================ */
.services {
  padding: 96px 0;
  background: var(--bg);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.service-card--featured {
  background: linear-gradient(135deg, var(--primary) 0%, #0052cc 100%);
  border-color: var(--primary);
  color: #fff;
}

.service-card--featured:hover {
  border-color: var(--primary-dark);
  box-shadow: var(--shadow-blue);
}

.service-card__badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255,255,255,0.2);
  color: #fff;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: var(--font-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.3);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.service-card__icon--blue { background: var(--primary-light); color: var(--primary); }
.service-card__icon--white { background: rgba(255,255,255,0.2); color: #fff; }
.service-card__icon--green { background: #dcfce7; color: var(--success); }
.service-card__icon--orange { background: var(--accent-light); color: var(--accent); }
.service-card__icon--teal { background: #ccfbf1; color: var(--secondary-dark); }
.service-card__icon--pink { background: #fce7f3; color: #db2777; }

body.dark .service-card__icon--blue {
  background: rgba(59, 130, 246, 0.16);
  color: #60a5fa;
}

.service-card__title {
  font-size: 1.1rem;
  font-weight: var(--font-bold);
  color: var(--text);
}

.service-card--featured .service-card__title {
  color: #fff;
}

.service-card__desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--neutral-500);
}

.service-card--featured .service-card__desc {
  color: rgba(255,255,255,0.8);
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
}

.service-card__list li {
  font-size: 0.85rem;
  color: var(--neutral-500);
  padding-left: 16px;
  position: relative;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

.service-card--featured .service-card__list li {
  color: rgba(255,255,255,0.75);
}

.service-card--featured .service-card__list li::before {
  background: rgba(255,255,255,0.6);
}

.service-card__link {
  font-size: 0.875rem;
  font-weight: var(--font-semibold);
  color: var(--primary);
  transition: gap var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-card--featured .service-card__link {
  color: rgba(255,255,255,0.9);
}

.service-card__link:hover {
  gap: 8px;
}

/* ============================
   ABOUT
============================ */
.about {
  padding: 96px 0;
  background: var(--neutral-50);
}

.about__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__img-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.about__img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  transition: transform var(--transition-slow);
}

.about__img:hover {
  transform: scale(1.02);
}

.about__img-card {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: var(--surface);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
}

.about__img-card-icon {
  font-size: 1.8rem;
}

.about__img-card-title {
  font-size: 0.85rem;
  font-weight: var(--font-bold);
  color: var(--text);
}

.about__img-card-sub {
  font-size: 0.75rem;
  color: var(--neutral-400);
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about__content .section-title {
  text-align: left;
}

.about__text {
  font-size: 1rem;
  color: var(--neutral-500);
  line-height: 1.75;
}

.about__features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px 0;
}

.about__feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.about__feature-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: var(--font-bold);
  flex-shrink: 0;
  margin-top: 2px;
}

.about__feature-title {
  font-size: 0.95rem;
  font-weight: var(--font-semibold);
  color: var(--neutral-800);
  margin-bottom: 4px;
}

.about__feature-desc {
  font-size: 0.875rem;
  color: var(--neutral-500);
  line-height: 1.5;
}

/* ============================
   PORTFOLIO
============================ */
.portfolio {
  padding: 96px 0;
  background: var(--bg);
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 24px;
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: all var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.portfolio-card--large {
  grid-column: span 2;
}

.portfolio-card__img-wrapper {
  position: relative;
  overflow: hidden;
}

.portfolio-card__img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-card--large .portfolio-card__img {
  height: 280px;
}

.portfolio-card:hover .portfolio-card__img {
  transform: scale(1.05);
}

.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

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

.portfolio-card__body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.portfolio-card__tag {
  font-size: 0.75rem;
  font-weight: var(--font-semibold);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.portfolio-card__title {
  font-size: 1rem;
  font-weight: var(--font-bold);
  color: var(--text);
}

.portfolio-card__desc {
  font-size: 0.875rem;
  color: var(--neutral-500);
  line-height: 1.5;
}

.portfolio__cta {
  text-align: center;
  margin-top: 48px;
}


/* ============================
   FOOTER
============================ */
.footer {
  background: var(--surface-strong);
  padding: 72px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__brand .nav__logo {
  color: #fff;
}

.footer__desc {
  font-size: 0.875rem;
  color: var(--neutral-500);
  line-height: 1.7;
  max-width: 280px;
}

.footer__socials {
  display: flex;
  gap: 8px;
}

.footer__social {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neutral-400);
  transition: all var(--transition);
}

.footer__social:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.footer__col-title {
  font-size: 0.85rem;
  font-weight: var(--font-semibold);
  color: #141010;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

body.dark .footer__col-title {
  color: #fff;
}

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

.footer__link {
  font-size: 0.875rem;
  color: var(--neutral-500);
  transition: color var(--transition);
  cursor: pointer;
}

.footer__link:hover {
  color: var(--neutral-300);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  flex-wrap: wrap;
  gap: 8px;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--neutral-600);
}

/* ============================
   RESPONSIVE - TABLET
============================ */
@media (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .hero__visual {
    display: none;
  }

  .hero__title {
    font-size: 2.5rem;
  }

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

  .about__container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about__img {
    height: 360px;
  }

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

  .portfolio-card--large {
    grid-column: span 2;
  }

  .contact__container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer__brand {
    grid-column: span 2;
  }
}

/* ============================
   RESPONSIVE - MOBILE
============================ */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    right: 0;
    left: auto;
    bottom: 0;
    width: min(320px, 85%);
    max-width: 320px;
    height: calc(100vh - var(--header-height));
    background: var(--surface);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 8px;
    padding: 24px 20px;
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    box-shadow: -12px 0 30px rgba(0, 0, 0, 0.08);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    z-index: 999;
  }

  .nav__menu.open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__item {
    width: 100%;
  }

  .nav__link {
    padding: 12px 16px;
    font-size: 1rem;
    width: 100%;
    display: block;
  }

  .nav__item--cta {
    margin-left: 0;
    margin-top: 8px;
  }

  .nav__item--cta .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.95rem;
  }

  .hero {
    padding-top: var(--header-height);
    min-height: auto;
  }

  .hero__container {
    padding-top: 40px;
    padding-bottom: 64px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__description {
    font-size: 1rem;
  }

  .hero__actions {
    flex-direction: column;
  }

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

  .hero__stats {
    gap: 16px;
  }

  .hero__stat-number {
    font-size: 1.25rem;
  }

  .services {
    padding: 64px 0;
  }

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

  .about {
    padding: 64px 0;
  }

  .portfolio {
    padding: 64px 0;
  }

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

  .portfolio-card--large {
    grid-column: span 1;
  }


  .footer {
    padding: 48px 0 24px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__brand {
    grid-column: span 1;
  }

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

  .section-header {
    margin-bottom: 40px;
  }
}

/* ============================
   WHATSAPP FLUTUANTE
   ============================ */
.whatsapp-float {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: waPulse 3s ease-in-out infinite;
}

.whatsapp-float svg {
  fill: #fff;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37,211,102,0.6);
  animation: none;
}

.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  background: var(--dark-3);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  box-shadow: var(--shadow-sm);
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--dark-3);
}

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

@keyframes waPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
  50% { box-shadow: 0 4px 30px rgba(37,211,102,0.7), 0 0 0 8px rgba(37,211,102,0.1); }
}


@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero__stats {
    flex-wrap: wrap;
  }

  .hero__stat-divider {
    display: none;
  }
}