/* ═══════════════════════════════════════════════════════════════
   ÁLVARO MONFORTE MARÍN — Portfolio
   Colors: #E74C3C (accent), #2C3E50 (dark), #ECF0F1 (light bg)
   Font:   Inter
   ═══════════════════════════════════════════════════════════════ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: #ECF0F1;
  color: #2C3E50;
  line-height: 1.7;
  transition: background-color .4s ease, color .4s ease;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}

/* ────────── Utility ────────── */
p { color: #555; line-height: 1.75; }

/* ────────── Skip link ────────── */
.skip-link {
  position: absolute;
  top: -50px;
  left: 16px;
  background: #E74C3C;
  color: #fff;
  padding: 8px 16px;
  border-radius: 0 0 8px 8px;
  font-size: .85rem;
  z-index: 9999;
  transition: top .2s ease;
}
.skip-link:focus { top: 0; }

/* ────────── Language visibility ────────── */
/* Default: hide all language-specific elements */
.en, .es { display: none !important; }

/* When body has lang class, show the correct language inline or block */
body.lang-en .en { display: revert !important; }
body.lang-es .es { display: revert !important; }

/* ────────── Focus visible ────────── */
:focus-visible {
  outline: 2px solid #E74C3C;
  outline-offset: 3px;
}

/* ════════════════════════════════════════════════════════════════
   HEADER
   ════════════════════════════════════════════════════════════════ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(236, 240, 241, .85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(44, 62, 80, .08);
  transition: background .4s ease, border-color .4s ease;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -.5px;
  color: #2C3E50;
  transition: color .3s ease;
}
.header-logo:hover { color: #E74C3C; }

.nav-container {
  display: flex;
  align-items: center;
  gap: 24px;
}

.navbar {
  display: flex;
  gap: 6px;
  align-items: center;
}

.navbar a {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .3px;
  text-transform: uppercase;
  color: #2C3E50;
  transition: background .2s ease, color .2s ease;
}
.navbar a:hover,
.navbar a.active {
  background: #E74C3C;
  color: #fff;
}

/* Toggle container */
.toggle-container {
  display: flex;
  gap: 8px;
  align-items: center;
}
.toggle-item {
  display: flex;
  align-items: center;
}

/* Toggle switches */
.switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 22px;
}
.switch input { opacity: 0; width: 0; height: 0; }

.slider {
  position: absolute;
  inset: 0;
  background-color: #E74C3C;
  border-radius: 22px;
  cursor: pointer;
  transition: background-color .3s ease;
}
.slider::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform .3s ease;
}
input:checked + .slider::before { transform: translateX(20px); }

.lang-label, .mode-label {
  position: absolute;
  font-size: .55rem;
  font-weight: 700;
  color: #fff;
  z-index: 1;
  pointer-events: none;
}
.lang-en, .mode-light { left: 6px; top: 5px; }
.lang-es, .mode-dark   { right: 5px; top: 5px; }

/* Hamburger — hidden on desktop */
.hamburger-button {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 1001;
}
.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px 0;
  background: #2C3E50;
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}

/* ════════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  background: url('../images/fondo_canarias.jpeg') center / cover no-repeat;
  background-attachment: fixed;
}
/* Touch devices don't support background-attachment: fixed */
@media (hover: none) {
  .hero { background-attachment: scroll; }
}
/* Dark overlay for text readability over hero image */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(236, 240, 241, .88);
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
  text-align: center;
}

.hero-label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #E74C3C;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 24px;
  color: #2C3E50;
}

.hero-subtitle {
  font-size: 1.1rem;
  font-weight: 400;
  color: #555;
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* CTA buttons (shared) */
.cta-button {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  background: #E74C3C;
  color: #fff;
  border: 2px solid #E74C3C;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(231, 76, 60, .25);
}
.cta-button.ghost {
  background: transparent;
  color: #E74C3C;
}
.cta-button.ghost:hover {
  background: #E74C3C;
  color: #fff;
}

/* Hero stack strip */
.hero-stack {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 28px;
}
.hero-stack-label {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: #8895a0;
}
.hero-stack-icons {
  display: flex;
  gap: 10px;
}
.hero-stack-icons img {
  width: 28px;
  height: 28px;
  opacity: .7;
  transition: opacity .2s ease, transform .2s ease;
}
.hero-stack-icons img:hover { opacity: 1; transform: scale(1.15); }

/* Status badge */
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 500;
  color: #555;
  background: rgba(46, 204, 113, .08);
  padding: 6px 16px;
  border-radius: 999px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2ecc71;
  box-shadow: 0 0 8px rgba(46, 204, 113, .6);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 4px rgba(46, 204, 113, .4); }
  50%      { box-shadow: 0 0 12px rgba(46, 204, 113, .8); }
}

/* ════════════════════════════════════════════════════════════════
   SECTIONS — shared
   ════════════════════════════════════════════════════════════════ */
.section {
  padding: 100px 24px;
}
.section-alt {
  background: #fff;
}
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #E74C3C;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.5px;
  margin-bottom: 48px;
  color: #2C3E50;
}

/* ════════════════════════════════════════════════════════════════
   ABOUT
   ════════════════════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}

.about-photo img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 8px;
  filter: grayscale(.15);
  transition: filter .3s ease;
}
.about-photo img:hover { filter: grayscale(0); }

.about-text > p {
  font-size: 1.05rem;
  color: #555;
  margin-bottom: 28px;
  line-height: 1.8;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
.about-detail h3 {
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #E74C3C;
  margin-bottom: 8px;
}
.about-detail p {
  font-size: .9rem;
  color: #555;
  margin-bottom: 4px;
  line-height: 1.5;
}

.about-strengths {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.strength-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .92rem;
  color: #2C3E50;
  padding: 10px 16px;
  border-radius: 8px;
  background: rgba(231, 76, 60, .04);
  border: 1px solid rgba(231, 76, 60, .08);
}
.strength-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════════
   PROCESS
   ════════════════════════════════════════════════════════════════ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.process-step {
  padding: 36px 28px;
  border-radius: 8px;
  background: #ECF0F1;
  border: 1px solid rgba(44, 62, 80, .06);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.process-step:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(44, 62, 80, .08);
  border-color: rgba(44, 62, 80, .12);
}
.process-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 700;
  color: #E74C3C;
  margin-bottom: 16px;
  line-height: 1;
}
.process-step h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #2C3E50;
}
.process-step p {
  font-size: .9rem;
  color: #555;
  line-height: 1.7;
}

/* ════════════════════════════════════════════════════════════════
   PROJECTS
   ════════════════════════════════════════════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  padding: 32px 28px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid rgba(44, 62, 80, .08);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(44, 62, 80, .1);
  border-color: #E74C3C;
}

.project-tag {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #E74C3C;
  background: rgba(231, 76, 60, .06);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
  align-self: flex-start;
}

.project-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: #2C3E50;
}

.project-card p {
  font-size: .9rem;
  color: #555;
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.project-tech span {
  font-size: .72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  background: #ECF0F1;
  color: #2C3E50;
  letter-spacing: .3px;
}

.project-link {
  font-size: .85rem;
  font-weight: 600;
  color: #E74C3C;
  transition: letter-spacing .2s ease;
}
.project-link:hover { letter-spacing: 1px; }

/* ════════════════════════════════════════════════════════════════
   SERVICES
   ════════════════════════════════════════════════════════════════ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.service-card {
  padding: 32px 24px;
  border-radius: 8px;
  background: #ECF0F1;
  border: 1px solid rgba(44, 62, 80, .06);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(44, 62, 80, .08);
  border-color: rgba(44, 62, 80, .12);
}

.service-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #2C3E50;
}

.service-card p {
  font-size: .88rem;
  color: #555;
  line-height: 1.7;
}

/* ════════════════════════════════════════════════════════════════
   TECH STACK
   ════════════════════════════════════════════════════════════════ */
.tech-category {
  margin-bottom: 36px;
}
.tech-category:last-child {
  margin-bottom: 0;
}
.tech-category-title {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 16px;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 20px;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 12px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid rgba(44, 62, 80, .06);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.tech-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(44, 62, 80, .08);
  border-color: #E74C3C;
}

/* Featured tech item (e.g. Rust) */
.tech-item--featured {
  border-color: #E74C3C;
  background: rgba(231, 76, 60, .03);
  position: relative;
}
.tech-item--featured::after {
  content: "★";
  position: absolute;
  top: 6px;
  right: 8px;
  font-size: .6rem;
  color: #E74C3C;
}

.tech-item img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 0;
}

.tech-item span {
  font-size: .72rem;
  font-weight: 600;
  color: #555;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ════════════════════════════════════════════════════════════════
   CONTACT
   ════════════════════════════════════════════════════════════════ */
.contact-section {
  text-align: center;
  max-width: 650px !important;
}

.contact-subtitle {
  font-size: 1.05rem;
  color: #555;
  margin-bottom: 36px;
  line-height: 1.7;
}

.contact-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════ */
.footer {
  background: #2C3E50;
  color: #bdc3c7;
  padding: 60px 24px 0;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.footer-role {
  font-size: .85rem;
  margin-bottom: 8px;
}
.footer-location {
  font-size: .85rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links h4 {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 8px;
}
.footer-links a {
  font-size: .88rem;
  color: #bdc3c7;
  transition: color .2s ease;
}
.footer-links a:hover { color: #E74C3C; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 0;
  text-align: center;
  font-size: .8rem;
  color: #7f8c8d;
}

/* ════════════════════════════════════════════════════════════════
   ANIMATIONS (fade-in on scroll)
   ════════════════════════════════════════════════════════════════ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ════════════════════════════════════════════════════════════════
   DARK MODE
   ════════════════════════════════════════════════════════════════ */
body.dark-mode {
  background-color: #0f0f0f;
  color: #e0e0e0;
}

body.dark-mode .header {
  background: rgba(15, 15, 15, .85);
  border-bottom-color: rgba(255, 255, 255, .06);
}
body.dark-mode .header-logo { color: #fff; }
body.dark-mode .navbar a { color: #ccc; }
body.dark-mode .navbar a:hover { background: #E74C3C; color: #fff; }
body.dark-mode .hamburger-line { background: #e0e0e0; }

body.dark-mode .hero::before { background: rgba(18, 18, 18, .9); }
body.dark-mode .hero-title { color: #fff; }
body.dark-mode .hero-subtitle { color: #999; }
body.dark-mode .hero-stack-icons img { opacity: .6; }
body.dark-mode .hero-stack-icons img.dark-invert { filter: brightness(0) invert(1); opacity: .85; }
body.dark-mode .hero-stack-icons img:hover { opacity: 1; }
body.dark-mode .hero-status { background: rgba(46, 204, 113, .1); color: #bbb; }

body.dark-mode .section-title { color: #fff; }
body.dark-mode .section-alt { background: #1a1a1a; }

body.dark-mode p { color: #999; }

body.dark-mode .about-photo img { filter: grayscale(.2) brightness(.9); }
body.dark-mode .about-photo img:hover { filter: grayscale(0) brightness(1); }
body.dark-mode .about-detail p { color: #999; }
body.dark-mode .strength-item {
  background: rgba(231, 76, 60, .06);
  border-color: rgba(231, 76, 60, .12);
  color: #ddd;
}

body.dark-mode .process-step {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, .06);
}
body.dark-mode .process-step h3 { color: #fff; }

body.dark-mode .project-card {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, .06);
}
body.dark-mode .project-card:hover { border-color: #E74C3C; }
body.dark-mode .project-card h3 { color: #fff; }
body.dark-mode .project-tech span {
  background: #252525;
  color: #ccc;
}

body.dark-mode .service-card {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, .06);
}
body.dark-mode .service-card h3 { color: #fff; }

body.dark-mode .tech-item {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, .06);
}
body.dark-mode .tech-item:hover { border-color: #E74C3C; }
/* Only invert dark/mono icons — colored icons keep their brand colors */
body.dark-mode .tech-item img.dark-invert { filter: brightness(0) invert(1); }
body.dark-mode .tech-item span { color: #999; }
body.dark-mode .tech-item--featured {
  border-color: rgba(231, 76, 60, .4);
  background: rgba(231, 76, 60, .06);
}
body.dark-mode .tech-category-title { color: #666; }

body.dark-mode .contact-subtitle { color: #999; }

body.dark-mode .cta-button.ghost {
  color: #E74C3C;
  border-color: #E74C3C;
}
body.dark-mode .cta-button.ghost:hover {
  background: #E74C3C;
  color: #fff;
}

body.dark-mode .footer { background: #0a0a0a; }

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet
   ════════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .about-photo {
    max-width: 260px;
    margin: 0 auto;
  }
  .about-details {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile
   ════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  html { scroll-padding-top: 60px; }

  .header-inner { height: 54px; padding: 0 16px; }

  /* Hamburger visible */
  .hamburger-button { display: block; }

  /* Nav hidden by default */
  .nav-container {
    display: none;
    position: absolute;
    top: 54px;
    left: 0;
    width: 100%;
    flex-direction: column;
    align-items: center;
    background: rgba(236, 240, 241, .98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 20px 0;
    gap: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .08);
  }
  .nav-container.active { display: flex; }

  body.dark-mode .nav-container { background: rgba(15, 15, 15, .98); }

  .navbar {
    flex-direction: column;
    gap: 4px;
    width: 100%;
    align-items: center;
  }
  .navbar a {
    width: 80%;
    text-align: center;
    padding: 10px;
    font-size: .85rem;
  }

  /* Hamburger animation */
  .hamburger-button.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .hamburger-button.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }
  .hamburger-button.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Hero */
  .hero {
    padding: 100px 20px 60px;
    min-height: auto;
    background-attachment: scroll;  /* fixed is broken on iOS Safari */
  }
  .hero-title { font-size: 1.9rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-stack-icons { flex-wrap: wrap; justify-content: center; }
  .hero-stack-icons img { width: 24px; height: 24px; }

  /* Sections */
  .section { padding: 64px 20px; }
  .section-title { margin-bottom: 32px; }

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

  /* Tech */
  .tech-category { margin-bottom: 28px; }
  .tech-category-title { font-size: .65rem; }
  .tech-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 12px;
  }
  .tech-item { padding: 14px 8px; }
  .tech-item img { width: 36px; height: 36px; }
  .tech-item span { font-size: .65rem; }
  .tech-item--featured::after { font-size: .55rem; top: -6px; right: -6px; width: 16px; height: 16px; }
}

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE — Small phone
   ════════════════════════════════════════════════════════════════ */
@media (max-width: 400px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-stack { flex-direction: column; gap: 8px; }
  .cta-button { width: 100%; justify-content: center; }
  .contact-cta { flex-direction: column; align-items: center; }
}