/* Farrell's Design – Corporate / Industrial Theme */

/* CSS Variables */
:root {
  --bg: #ffffff;
  --surface: #f5f5f5;
  --card: #ffffff;
  --text: #2c2c2c;
  --muted: #666666;
  --primary: #c80000;
  --accent: #c80000;
  --header-h: 56px;
  --ring: 0 0 0 2px rgba(200, 0, 0, 0.3);
  --radius: 0px;
  --radius-lg: 2px;
  --shadow: 0 2px 8px rgba(0,0,0,.15);
  --divider: rgba(0,0,0,0.1);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: #ffffff;
  padding-top: var(--header-h);
}

/* Layout helpers - Mobile First */
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 4vw; }
.grid { display: grid; gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.stack { display: grid; }
.gap-l { gap: 1rem; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%) !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  backdrop-filter: none !important;
}
.header-inner { 
  display: flex; 
  justify-content: space-between;
  align-items: center; 
  gap: 1rem; 
  padding: 0.75rem 0; 
  min-height: var(--header-h);
  background: transparent !important;
  width: 100%;
}
.site-header .container {
  background: transparent !important;
  padding: 0 4vw;
  display: flex;
  width: 100%;
}
.logo { 
  display: inline-flex; 
  align-items: center; 
  gap: .75rem; 
  color: #c80000; 
  text-decoration: none; 
  flex-shrink: 0;
}
.logo-mark { 
  display: none; 
}
.logo-text { 
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-primary {
  font-weight: 700; 
  letter-spacing: .05em; 
  text-transform: uppercase;
  font-size: 20px;
  color: #c80000;
  line-height: 1;
}
.logo-secondary {
  font-size: 11px;
  color: #0066CC;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  line-height: 1;
  margin-top: 2px;
}

.nav { 
  display: none; 
  position: fixed; 
  top: var(--header-h); 
  left: 0; 
  right: 0; 
  background: #ffffff; 
  border-bottom: 1px solid rgba(0,0,0,0.08); 
  padding: 1rem 4vw; 
  transform: translateY(-100%); 
  transition: transform .3s ease; 
  flex-direction: column; 
  gap: 1rem; 
  box-shadow: 0 2px 8px rgba(0,0,0,0.1); 
  z-index: 49;
}
.nav.open { 
  display: flex; 
  transform: translateY(0); 
}
.nav a { 
  color: #333333; 
  text-decoration: none; 
  font-weight: 700; 
  padding: 0.75rem 0; 
  position: relative; 
  text-transform: uppercase;
  letter-spacing: .05em;
  font-size: 14px;
  transition: color .2s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.nav a:hover { color: #000000; }
.nav a::after { display: none; }
.nav a[aria-current="page"] { color: #000000; }
.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
  flex-shrink: 0;
}

.lang-switch { 
  display: inline-flex; 
  align-items: center; 
  gap: .4rem; 
  color: #666666; 
  font-size: 14px; 
  flex-shrink: 0;
}
.lang-switch select { 
  appearance: none; 
  background: #ffffff; 
  color: #333333; 
  border: 1px solid rgba(0, 0, 0, 0.15); 
  border-radius: 0; 
  padding: .35rem .55rem;
  font-size: 13px;
  min-height: 44px;
  min-width: 80px;
  cursor: pointer;
}

.nav-toggle { 
  display: inline-flex; 
  background: none; 
  border: 0; 
  padding: 0.5rem; 
  cursor: pointer; 
  min-width: 44px;
  min-height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 51;
  flex-shrink: 0;
}
.nav-toggle .bar { 
  display: block; 
  width: 24px; 
  height: 3px; 
  background: #333333; 
  margin: 3px 0; 
  transition: all 0.3s ease;
}
.nav-toggle:hover .bar { background: #000000; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero */
.section { padding: clamp(3rem, 8vw, 6.5rem) 0; position: relative; }
.section.alt { background: var(--surface); border-block: 1px solid var(--divider); }
.section { scroll-margin-top: var(--header-h); }

.hero { overflow: hidden; position: relative; }
.hero-grid { grid-template-columns: 1fr; align-items: center; }
.headline { font-size: clamp(1.25rem, 4vw, 3.5rem); line-height: 1.1; margin: 0; letter-spacing: .05em; font-weight: 700; text-transform: uppercase; }
.tagline { color: var(--muted); font-size: clamp(0.75rem, 1.8vw, 1.1875rem); margin: 0.5rem 0 0; }

/* Hero Carousel - Mobile First */
.hero-carousel { padding: 0 !important; min-height: 70vh; position: relative; overflow: hidden; margin: 0; }
.hero-carousel-container { position: relative; width: 100%; min-height: 70vh; }
.hero-slides { position: relative; width: 100%; min-height: 70vh; }
.hero-slide { position: absolute; top: 0; left: 0; width: 100%; min-height: 70vh; opacity: 0; visibility: hidden; transition: opacity 0.6s ease, visibility 0.6s ease; z-index: 1; }
.hero-slide.active { opacity: 1; visibility: visible; z-index: 2; }
.hero-slide-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; min-height: 70vh; background-size: cover; background-position: center; background-repeat: no-repeat; background-color: #2c2c2c; z-index: 0; display: block; }
.hero-slide-bg::after { content: ""; position: absolute; inset: 0; background: rgba(0, 0, 0, 0.5); z-index: 1; pointer-events: none; }
.hero-slide .container { position: relative; z-index: 10; padding: 2rem 4vw; min-height: 70vh; display: flex; align-items: center; }
.hero-slide .hero-grid { grid-template-columns: 1fr; gap: 1rem; }
.hero-slide .headline { 
  color: #ffffff; 
  text-shadow: 0 2px 8px rgba(0,0,0,0.3); 
  font-size: clamp(1.25rem, 4vw, 3.5rem);
}
.hero-slide .headline .cn-name { 
  color: rgba(255,255,255,0.85); 
  font-size: clamp(0.7rem, 1.5vw, 0.85em);
}
.hero-slide .tagline { 
  color: rgba(255,255,255,0.9); 
  text-shadow: 0 1px 4px rgba(0,0,0,0.2); 
  font-size: clamp(0.75rem, 1.8vw, 1.1875rem);
}
.hero-slide .hero-card { position: relative; z-index: 2; }

/* Carousel Controls - Mobile First */
.carousel-btn { 
  position: absolute; 
  top: 50%; 
  transform: translateY(-50%); 
  z-index: 10; 
  width: 44px; 
  height: 44px; 
  min-width: 44px;
  min-height: 44px;
  background: rgba(255, 255, 255, 0.9); 
  border: 2px solid var(--text); 
  color: var(--text); 
  font-size: 24px; 
  font-weight: 700; 
  cursor: pointer; 
  transition: all 0.3s ease; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  border-radius: 0; 
}
.carousel-btn:hover { background: var(--primary); border-color: var(--primary); color: #ffffff; }
.carousel-btn:active { transform: translateY(-50%) scale(0.95); }
.carousel-prev { left: 1rem; }
.carousel-next { right: 1rem; }

/* Carousel Dots */
.carousel-dots { position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%); z-index: 10; display: flex; gap: 0.75rem; }
.carousel-dot { 
  width: 12px; 
  height: 12px; 
  min-width: 44px;
  min-height: 44px;
  border: 2px solid #ffffff; 
  background: transparent; 
  cursor: pointer; 
  transition: all 0.3s ease; 
  border-radius: 0; 
  padding: 0; 
  display: flex;
  align-items: center;
  justify-content: center;
}
.carousel-dot::before {
  content: "";
  width: 12px;
  height: 12px;
  background: transparent;
  transition: all 0.3s ease;
}
.carousel-dot:hover::before { background: rgba(255, 255, 255, 0.5); }
.carousel-dot.active::before { background: var(--primary); }

/* Smaller Chinese name under English */
.cn-name { display: block; font-size: 0.85em; line-height: 1.2; color: var(--muted); margin-top: .2em; font-weight: 600; }

/* Centered hero variant */
.centered-hero .container { display: grid; justify-items: center; text-align: center; gap: .6rem; }

/* Centered hero for About page */
.about-hero .hero-grid { grid-template-columns: 1fr; justify-items: center; gap: 1.25rem; text-align: center; }
.about-hero .stack { align-items: center; }
.about-hero .facts { max-width: 640px; margin-inline: auto; justify-items: center; }
.about-hero .fact { justify-items: center; text-align: center; }
.about-hero .hero-card { justify-self: center; max-width: 720px; width: 100%; }

.pill-list { display: flex; flex-wrap: wrap; gap: .6rem; padding: 0; margin: .25rem 0 0; list-style: none; }
.pill-list li { padding: .35rem .6rem; border: 1px solid rgba(0,0,0,0.15); border-radius: 0; color: var(--muted); font-size: 14px; background: var(--card); }

.actions { display: flex; gap: 0.75rem; align-items: center; margin-top: 1rem; flex-wrap: wrap; }
.btn { 
  display: inline-flex; 
  justify-content: center; 
  align-items: center; 
  padding: clamp(0.75rem, 2vw, 0.875rem) clamp(1rem, 3vw, 1.5rem); 
  min-height: 44px;
  min-width: clamp(100px, 20vw, 120px);
  border-radius: 0; 
  font-weight: 700; 
  text-decoration: none; 
  color: var(--text); 
  border: 2px solid var(--text); 
  cursor: pointer; 
  transition: background .2s ease, color .2s ease, border .2s ease; 
  text-transform: uppercase; 
  letter-spacing: .05em; 
  font-size: clamp(12px, 2vw, 14px); 
}
.btn:hover { background: var(--text); color: #ffffff; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--primary); color: #ffffff; border-color: var(--primary); }
.btn.primary:hover { background: #a00000; border-color: #a00000; color: #ffffff; }
.btn.ghost { background: transparent; border-color: var(--text); }
.btn.ghost:hover { background: var(--text); color: #ffffff; }



.hero-card { display: grid; }
.hero-card-inner { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: clamp(1rem, 3vw, 1.35rem); box-shadow: var(--shadow); }
.hero-card h3 { 
  margin: 0 0 .5rem; 
  font-weight: 700; 
  text-transform: uppercase; 
  letter-spacing: .05em; 
  font-size: clamp(0.875rem, 2vw, 1rem);
}
.hero-card p {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  line-height: 1.5;
}
.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(0.5rem, 2vw, 0.75rem); margin-top: clamp(0.5rem, 2vw, 0.75rem); }
.mini-stats strong { font-size: clamp(16px, 3vw, 20px); font-weight: 700; }
.mini-stats span { color: var(--muted); font-size: clamp(10px, 1.5vw, 12px); text-transform: uppercase; letter-spacing: .05em; }

/* About facts row */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: .9rem; margin-top: .5rem; }
.fact { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: .7rem .9rem; display: grid; justify-items: start; }
.fact strong { font-size: 20px; line-height: 1; font-weight: 700; }
.fact span { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }

/* Service hero center */
.service-hero .stack { align-items: center; text-align: center; }

/* Blobs (background accents) - Hidden for corporate theme */
.bg-blob { display: none; }

/* Section heads */
.section-head { text-align: left; margin-bottom: 1.5rem; }
.section-head h2 { margin: 0 0 0.75rem; font-size: clamp(1.5rem, 4vw, 2rem); letter-spacing: .05em; font-weight: 700; text-transform: uppercase; }
.section-head h2::after { content: ""; display: block; width: 3.5rem; height: 3px; background: var(--primary); border-radius: 0; margin-top: 0.75rem; }
.section-head p { margin: 0.5rem 0 0; color: var(--muted); font-size: clamp(0.875rem, 2vw, 1rem); }
/* Centered variant */
.section-head.center { text-align: center; }
.section-head.center h2::after { margin-left: auto; margin-right: auto; }

/* Cards */
.cards .card { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: 1.1rem; transition: box-shadow .2s ease, border .2s ease; }
.cards .card:hover { box-shadow: var(--shadow); border-color: var(--primary); }
.card h3 { font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.card .icon { font-size: 22px; margin-bottom: .6rem; width: 40px; height: 40px; display: grid; place-content: center; border-radius: 0; background: var(--surface); border: 1px solid var(--divider); }

/* Projects - Mobile First */
.project-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.project-card { position: relative; display: block; text-decoration: none; color: inherit; }
.project-card .thumb { 
  aspect-ratio: 16 / 10; 
  width: 100%;
  max-width: 100%;
  border-radius: var(--radius); 
  border: 1px solid var(--divider); 
  box-shadow: var(--shadow); 
  overflow: hidden; 
  background-size: cover; 
  background-position: center; 
}
.project-card .thumb::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.5)); }
.project-card .project-meta { position: absolute; left: 12px; bottom: 10px; display: flex; gap: .6rem; align-items: baseline; color: #ffffff; font-size: 14px; text-shadow: 0 2px 6px rgba(0,0,0,.5); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.project-card .project-meta span { color: #ffffff; font-size: 12px; opacity: 0.9; }
.project-card:hover .thumb { box-shadow: 0 4px 12px rgba(0,0,0,.25); transition: box-shadow .25s ease; }
.gradient-a { background: linear-gradient(135deg, #6cf1e3, #3fb1ff); }
.gradient-b { background: linear-gradient(135deg, #ffb86b, #ff7eb3); }
.gradient-c { background: linear-gradient(135deg, #a8ff78, #78ffd6); }

/* Modal */
.modal { position: fixed; inset: 0; display: none; z-index: 100; }
.modal.open { display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.6); }
.modal-dialog { position: relative; width: min(980px, 92vw); max-height: 90vh; overflow: auto; background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius-lg); box-shadow: 0 30px 60px rgba(0,0,0,.3); padding: 1.2rem; }
.modal-close { position: absolute; right: 10px; top: 8px; width: 36px; height: 36px; border: 2px solid var(--text); border-radius: 0; background: var(--card); color: var(--text); cursor: pointer; font-weight: 700; }
.modal-close:hover { background: var(--text); color: #ffffff; }
.modal-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1rem; align-items: start; }
.modal-media img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--divider); display: block; }
.modal-section { margin-top: .8rem; display: grid; gap: .4rem; }
.modal-section h4, .modal-details h4 { margin: .6rem 0 .25rem; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: .4rem .8rem; align-items: baseline; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
@media (max-width: 920px) { .modal-grid { grid-template-columns: 1fr; } }

/* Metrics / Achievements */
.metrics { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; }
.metric { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: .9rem; display: grid; gap: .25rem; justify-items: start; }
.metric strong { font-size: 24px; line-height: 1; font-weight: 700; }
.metric span { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }

/* Testimonials */
.testimonials { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.testimonial { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); }
.testimonial p { margin: 0 0 .6rem; color: var(--text); }
.testimonial footer { display: grid; gap: .1rem; color: var(--muted); font-size: 12px; }

/* CTA banner */
.cta-banner { text-align: center; background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 1.2rem; box-shadow: var(--shadow); }
.cta-banner h3 { margin: 0 0 .4rem; font-size: clamp(22px, 3.2vw, 28px); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.cta-banner p { margin: 0 0 .6rem; color: var(--muted); }

/* About */
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.4rem; align-items: start; }
.about-grid > .reveal { max-width: 64ch; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: .6rem; }
.ticks li { position: relative; padding-left: 1.4rem; color: var(--text); line-height: 1.5; }
.ticks li::before { content: "✔"; position: absolute; left: 0; top: .15em; color: var(--primary); font-weight: 700; }

/* Ensure tick list aligns under centered cards */
.contact-card.center .ticks { justify-items: start; text-align: left; margin-inline: auto; max-width: 560px; }
.contact-card.center .ticks li { text-align: left; }

/* Process steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; counter-reset: s; }
.step { position: relative; background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: 1rem; }
.step .bubble { width: 36px; height: 36px; border-radius: 0; display: grid; place-content: center; background: var(--primary); color: #ffffff; font-size: 18px; margin-bottom: .5rem; font-weight: 700; }
.step h3 { margin: 0 0 .25rem; font-size: 16px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* FAQ */
.faq-list { display: grid; gap: .6rem; }
.faq { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: .7rem .9rem; }
.faq summary { cursor: pointer; list-style: none; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--primary); transition: transform .2s ease; font-weight: 700; font-size: 18px; }
.faq[open] summary::after { content: "−"; }
.faq p { margin: .5rem 0 0; color: var(--muted); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1.2rem; align-items: start; }
.contact-grid.one-col { grid-template-columns: 1fr; }
.contact-grid.center { justify-items: center; }
.contact-grid.center .contact-card { text-align: center; max-width: 720px; }
.contact-grid.center .contact-list { width: max-content; margin-inline: auto; text-align: left; }
.contact-card { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 1rem; }
.contact-card.center { text-align: center; max-width: 720px; margin-left: auto; margin-right: auto; }
.contact-card.center .contact-list { width: max-content; margin-inline: auto; }
.contact-card.center .contact-list li { display: flex; gap: .35rem; grid-template-columns: unset; align-items: baseline; }
.contact-card.center .contact-list .k::after { content: ":"; margin-left: .25rem; opacity: .8; }
.contact-card h3 { text-align: center; margin: 0 0 .5rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.contact-card h3::after { content: ""; display: block; width: 56px; height: 3px; background: var(--primary); border-radius: 0; margin: .35rem auto 0; }
.contact-card .ticks { margin: .6rem 0 .9rem; }
.contact-card .form-note { text-align: center; color: var(--muted); margin-top: .8rem; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .7rem; }
.contact-list li { display: grid; grid-template-columns: 9ch 1fr; column-gap: .9rem; align-items: baseline; }
.contact-list .k { color: var(--muted); }
.contact-list a {
  color: var(--text);
  text-decoration: none;
  transition: color .25s ease;
}
.contact-list a:hover {
  color: var(--primary);
}
.contact-form { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 1rem; display: grid; gap: .6rem; }
.contact-form label { display: grid; gap: .25rem; font-size: 14px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.contact-form input, .contact-form textarea { width: 100%; padding: .65rem .7rem; border-radius: 0; border: 1px solid var(--divider); background: #ffffff; color: var(--text); outline: none; }
.contact-form input:focus, .contact-form textarea:focus { box-shadow: var(--ring); border-color: var(--primary); }
.contact-form .form-note { margin: 0; font-size: 12px; color: var(--muted); }
.cta-row { display: flex; gap: .6rem; margin-top: .8rem; justify-content: center; }
.cta-row.center { justify-content: center; }

/* Footer */
.site-footer { padding: clamp(1.5rem, 4vw, 2.25rem) 0 clamp(0.75rem, 2vw, 1.125rem); border-top: 2px solid var(--divider); background: var(--surface); position: relative; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: clamp(1rem, 3vw, 2rem); align-items: start; }
.footer-brand .brand { display: flex; align-items: center; gap: .6rem; margin-bottom: .4rem; flex-wrap: wrap; }
.footer-brand .brand-name { margin: 0; font-size: clamp(0.875rem, 2.5vw, 1.125rem); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.footer-brand .brand-desc { margin: .25rem 0 .8rem; color: var(--muted); max-width: 56ch; font-size: clamp(0.75rem, 1.8vw, 0.875rem); line-height: 1.5; }
.social { display: flex; gap: .6rem; }
.social-link { width: clamp(32px, 4vw, 36px); height: clamp(32px, 4vw, 36px); border-radius: 0; display: inline-grid; place-content: center; color: var(--text); background: var(--card); border: 1px solid var(--divider); opacity: .9; }
.social-link:hover { opacity: 1; border-color: var(--primary); background: var(--primary); color: #ffffff; }
.footer-col h4 { margin: 0 0 .5rem; font-size: clamp(0.875rem, 2vw, 1rem); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.footer-col ul { margin: 0; padding: 0; list-style: none; display: grid; gap: .45rem; }
.footer-col a { color: var(--muted); text-decoration: none; font-size: clamp(0.75rem, 1.5vw, 0.875rem); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { margin-top: clamp(1rem, 3vw, 1.25rem); padding-top: clamp(1rem, 3vw, 1.25rem); border-top: 1px solid var(--divider); display: flex; justify-content: center; color: var(--muted); font-size: clamp(0.75rem, 1.5vw, 0.875rem); }
.fab-top { position: fixed; right: 20px; bottom: 20px; width: 44px; height: 44px; border-radius: 0; display: grid; place-content: center; text-decoration: none; color: #ffffff; background: var(--primary); box-shadow: var(--shadow); border: 2px solid var(--primary); transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease; font-weight: 700; }
.fab-top:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.25); background: #a00000; border-color: #a00000; }
.fab-top.hidden { opacity: 0; transform: translateY(8px); pointer-events: none; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* Make all images flexible */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Responsive - Mobile First Approach */
/* Base styles are for mobile (up to 479px) */

/* Tablet: 480px and up */
@media (min-width: 480px) {
  .container { padding: 0 5vw; }
  .grid { gap: 1.75rem; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .carousel-btn { width: 48px; height: 48px; font-size: 28px; }
  .carousel-prev { left: 1.5rem; }
  .carousel-next { right: 1.5rem; }
  .hero-carousel { min-height: 75vh; }
  .hero-slide { min-height: 75vh; }
  .hero-slide-bg { min-height: 75vh; }
  .hero-slide .container { min-height: 75vh; padding: 3rem 5vw; }
  .hero-slide .hero-grid { gap: 1.5rem; }
  .lang-switch { margin-right: 1rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Tablet Landscape / Small Desktop: 768px and up */
@media (min-width: 768px) {
  .container { padding: 0 6vw; }
  .grid { gap: 2rem; }
  .gap-l { gap: 1.25rem; }
  .header-inner { 
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1rem; 
    padding: 0.8rem 0; 
  }
  .nav { 
    display: flex; 
    position: static; 
    transform: none; 
    flex-direction: row; 
    gap: 1.5rem; 
    padding: 0; 
    box-shadow: none; 
    border: none; 
    background: transparent;
    justify-self: center;
  }
  .nav a { 
    padding: 0.35rem 0; 
    min-height: auto;
  }
  .nav-toggle { display: none; }
  .header-right {
    justify-self: end;
  }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
  .hero-slide .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
  .about-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1.2fr 0.8fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.2fr 0.8fr 0.8fr; }
  .hero-slide .container { padding: clamp(4rem, 8vw, 6rem) 0; }
  .hero-card-inner { padding: 1.35rem; }
  .hero-card h3 { font-size: 1rem; }
  .hero-card p { font-size: 0.875rem; }
  .mini-stats strong { font-size: 20px; }
  .mini-stats span { font-size: 12px; }
  .carousel-btn { width: 50px; height: 50px; font-size: 32px; }
  .carousel-prev { left: 2rem; }
  .carousel-next { right: 2rem; }
  .hero-carousel { min-height: 600px; }
  .hero-slide { min-height: 600px; }
  .hero-slide-bg { min-height: 600px; }
  .hero-slide .container { min-height: 600px; padding: clamp(80px, 10vw, 120px) 0; }
}

/* Desktop: 1024px and up */
@media (min-width: 1024px) {
  .container { padding: 0; width: min(1120px, 92vw); }
  .grid { gap: 2rem; }
  .nav { gap: 1.8rem; }
  .project-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
  .hero-carousel { min-height: 650px; }
  .hero-slide { min-height: 650px; }
  .hero-slide-bg { min-height: 650px; }
  .hero-slide .container { min-height: 650px; }
}