/* Farrell's Design – minimal, modern, responsive */

/* CSS Variables */
:root {
  --bg: #0e0f13;
  --surface: #141823;
  --card: #101319;
  --text: #eaf0f7;
  --muted: #9fb0c8;
  --primary: #6ea8ff;
  --accent: #8cf1d8;
  --header-h: 56px;
  --ring: 0 0 0 2px color-mix(in oklab, var(--primary) 40%, transparent);
  --radius: 14px;
  --radius-lg: 18px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --divider: rgba(255,255,255,0.04);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  /* Bring back the layered look but with softer blends */
  background:
    radial-gradient(1200px 60% at 10% -10%, rgba(27,32,48,0.22) 0%, rgba(27,32,48,0) 60%),
    radial-gradient(1000px 60% at 110% 0%, rgba(18,24,38,0.18) 0%, rgba(18,24,38,0) 60%),
    linear-gradient(180deg, #0b0f15, #0f1219 45%, #0b0f15);
  padding-top: var(--header-h);
}

/* Layout helpers */
.container { width: min(1120px, 92vw); margin: 0 auto; }
.grid { display: grid; gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; }
.stack { display: grid; }
.gap-l { gap: 1.25rem; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(8px);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--divider);
}
.header-inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; padding: .8rem 0; min-height: var(--header-h); }
.logo { display: inline-flex; align-items: center; gap: .6rem; color: var(--text); text-decoration: none; }
.logo-mark { display: grid; place-content: center; width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, var(--primary), #6cf1e3); color: #0b0d12; font-weight: 700; }
.logo-text { font-weight: 700; letter-spacing: .2px; }

.nav { display: flex; gap: 1.2rem; align-items: center; justify-self: center; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 600; padding: .35rem .45rem; border-radius: .5rem; position: relative; }
.nav a:hover { color: var(--text); }
.nav a::after { content: ""; position: absolute; left: 50%; bottom: -6px; width: 100%; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); transform: translateX(-50%) scaleX(0); transform-origin: center; transition: transform .25s ease; opacity: .95; }
.nav a:hover::after { transform: translateX(-50%) scaleX(1); }
.nav a[aria-current="page"] { color: var(--text); }
.nav a[aria-current="page"]::after { transform: translateX(-50%) scaleX(1); }
.lang-switch { display: inline-flex; align-items: center; gap: .4rem; color: var(--muted); font-size: 14px; justify-self: end; }
.lang-switch select { appearance: none; background: #0c0e13; color: var(--text); border: 1px solid rgba(255,255,255,0.16); border-radius: .5rem; padding: .35rem .55rem; }

.nav-toggle { display: none; background: none; border: 0; padding: .25rem; cursor: pointer; }
.nav-toggle .bar { display: block; width: 26px; height: 2px; background: var(--text); margin: 6px 0; transition: .3s;
}
.nav-toggle:hover .bar { background: color-mix(in oklab, var(--primary) 60%, var(--text)); }

/* Hero */
.section { padding: clamp(64px, 8vw, 104px) 0; position: relative; }
.section.alt { background: rgba(255,255,255,0.01); border-block: 1px solid var(--divider); }
.section { scroll-margin-top: var(--header-h); }

.hero { overflow: hidden; }
.hero-grid { grid-template-columns: 1.1fr .9fr; align-items: center; }
.headline { font-size: clamp(32px, 5.6vw, 56px); line-height: 1.03; margin: 0; letter-spacing: .2px; }
.tagline { color: var(--muted); font-size: clamp(16px, 2.2vw, 19px); margin: 0; }

/* 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(255,255,255,0.08); border-radius: 999px; color: var(--muted); font-size: 14px; }

.actions { display: flex; gap: .9rem; align-items: center; margin-top: .6rem; flex-wrap: wrap; }
.btn { display: inline-flex; justify-content: center; align-items: center; padding: .7rem 1rem; border-radius: .6rem; font-weight: 600; text-decoration: none; color: var(--text); border: 1px solid rgba(255,255,255,0.12); cursor: pointer; transition: transform .15s ease, background .2s ease, border .2s ease, box-shadow .2s ease, filter .2s ease; }
.btn:hover { transform: translateY(-1px); border-color: rgba(255,255,255,0.2); box-shadow: 0 10px 24px rgba(0,0,0,.35); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: linear-gradient(135deg, var(--primary), #6cf1e3); color: #0a0b0f; border-color: transparent; box-shadow: var(--shadow); }
.btn.primary:hover { filter: brightness(1.05); box-shadow: 0 14px 30px rgba(110,168,255,.35); }
.btn.ghost { background: transparent; }
.btn.ghost:hover { border-color: rgba(255,255,255,0.28); background: rgba(255,255,255,0.04); }



.hero-card { display: grid; }
.hero-card-inner { background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.10); border-radius: var(--radius-lg); padding: 1.35rem; box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.06); }
.hero-card h3 { margin: 0 0 .25rem; }
.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-top: .75rem; }
.mini-stats strong { font-size: 20px; }
.mini-stats span { color: var(--muted); font-size: 12px; }

/* About facts row */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: .9rem; margin-top: .5rem; }
.fact { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: .7rem .9rem; display: grid; justify-items: start; }
.fact strong { font-size: 20px; line-height: 1; }
.fact span { color: var(--muted); font-size: 12px; }

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

/* Blobs (background accents) */
.bg-blob { position: absolute; filter: blur(40px) saturate(140%); opacity: .5; z-index: -1; }
.blob-a { width: 38vw; height: 38vw; top: -8vw; left: -8vw; background: radial-gradient(closest-side, #6cf1e3, transparent 70%); animation: floatA 18s ease-in-out infinite; }
.blob-b { width: 32vw; height: 32vw; bottom: -10vw; right: -6vw; background: radial-gradient(closest-side, #7aa2ff, transparent 70%); animation: floatB 22s ease-in-out infinite; }
@keyframes floatA { 0%,100% { transform: translate(0,0) } 50% { transform: translate(4vw, 2vw) } }
@keyframes floatB { 0%,100% { transform: translate(0,0) } 50% { transform: translate(-3vw, -2vw) } }

/* Section heads */
.section-head { text-align: left; margin-bottom: 1.2rem; }
.section-head h2 { margin: 0 0 .5rem; font-size: clamp(24px, 3.6vw, 32px); letter-spacing: .2px; }
.section-head h2::after { content: ""; display: block; width: 56px; height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 2px; margin-top: .5rem; opacity: .9; }
.section-head p { margin: .2rem 0 0; color: var(--muted); }
/* 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 rgba(255,255,255,0.08); border-radius: var(--radius); padding: 1.1rem; transition: transform .2s ease, box-shadow .2s ease, border .2s ease; }
.cards .card:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,.35); border-color: rgba(255,255,255,0.18); }
.card .icon { font-size: 22px; margin-bottom: .6rem; width: 40px; height: 40px; display: grid; place-content: center; border-radius: 10px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); }

/* Projects */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.1rem; }
.project-card { position: relative; display: block; text-decoration: none; color: inherit; }
.project-card .thumb { aspect-ratio: 16 / 10; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 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,.35)); }
.project-card .project-meta { position: absolute; left: 12px; bottom: 10px; display: flex; gap: .6rem; align-items: baseline; color: #e9eef6; font-size: 14px; text-shadow: 0 2px 6px rgba(0,0,0,.35); }
.project-card .project-meta span { color: #cbd6e6; font-size: 12px; }
.project-card:hover .thumb { transform: translateY(-2px); transition: transform .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(--surface); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-lg); box-shadow: 0 30px 60px rgba(0,0,0,.5); padding: 1.2rem; }
.modal-close { position: absolute; right: 10px; top: 8px; width: 36px; height: 36px; border: 0; border-radius: 999px; background: rgba(255,255,255,0.06); color: var(--text); cursor: pointer; }
.modal-close:hover { background: rgba(255,255,255,0.12); }
.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 rgba(255,255,255,0.12); 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 rgba(255,255,255,0.08); border-radius: var(--radius); padding: .9rem; display: grid; gap: .25rem; justify-items: start; }
.metric strong { font-size: 24px; line-height: 1; }
.metric span { color: var(--muted); font-size: 13px; }

/* Testimonials */
.testimonials { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.testimonial { background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.10); border-radius: var(--radius); padding: 1rem; box-shadow: inset 0 1px 0 rgba(255,255,255,0.06); }
.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: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.10); 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); }
.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(--muted); line-height: 1.5; }
.ticks li::before { content: "✔"; position: absolute; left: 0; top: .15em; color: var(--accent); }

/* 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 rgba(255,255,255,0.08); border-radius: var(--radius); padding: 1rem; }
.step .bubble { width: 36px; height: 36px; border-radius: 999px; display: grid; place-content: center; background: linear-gradient(135deg, var(--primary), #6cf1e3); color: #0b0f10; font-size: 18px; margin-bottom: .5rem; }
.step h3 { margin: 0 0 .25rem; font-size: 16px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* FAQ */
.faq-list { display: grid; gap: .6rem; }
.faq { background: var(--card); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: .7rem .9rem; }
.faq summary { cursor: pointer; list-style: none; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); transition: transform .2s ease; }
.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 rgba(255,255,255,0.1); border-radius: 14px; 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; }
.contact-card h3::after { content: ""; display: block; width: 56px; height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 2px; margin: .35rem auto 0; opacity: .9; }
.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;
  /* Prepare gradient text on hover */
  background-image: linear-gradient(90deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: var(--text);
  transition: color .25s ease, -webkit-text-fill-color .25s ease;
}
.contact-list a:hover {
  color: transparent;
  -webkit-text-fill-color: transparent; /* reveal gradient */
}
.contact-form { background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.10); border-radius: 14px; padding: 1rem; display: grid; gap: .6rem; }
.contact-form label { display: grid; gap: .25rem; font-size: 14px; color: var(--muted); }
.contact-form input, .contact-form textarea { width: 100%; padding: .65rem .7rem; border-radius: .6rem; border: 1px solid rgba(255,255,255,0.16); background: #0c0e13; color: var(--text); outline: none; }
.contact-form input:focus, .contact-form textarea:focus { box-shadow: var(--ring); border-color: color-mix(in oklab, var(--primary) 40%, transparent); }
.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: 36px 0 18px; border-top: 1px solid var(--divider); background: #0b0c10; position: relative; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 2rem; align-items: start; }
.footer-brand .brand { display: flex; align-items: center; gap: .6rem; margin-bottom: .4rem; }
.footer-brand .brand-name { margin: 0; font-size: 18px; }
.footer-brand .brand-desc { margin: .25rem 0 .8rem; color: var(--muted); max-width: 56ch; }
.social { display: flex; gap: .6rem; }
.social-link { width: 36px; height: 36px; border-radius: 10px; display: inline-grid; place-content: center; color: var(--text); background: #0c0e13; border: 1px solid rgba(255,255,255,0.12); opacity: .9; }
.social-link:hover { opacity: 1; border-color: rgba(255,255,255,0.25); }
.footer-col h4 { margin: 0 0 .5rem; font-size: 16px; }
.footer-col ul { margin: 0; padding: 0; list-style: none; display: grid; gap: .45rem; }
.footer-col a { color: var(--muted); text-decoration: none; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { margin-top: 20px; padding-top: 0; border-top: 0; display: flex; justify-content: center; color: var(--muted); }
.fab-top { position: fixed; right: 20px; bottom: 20px; width: 44px; height: 44px; border-radius: 999px; display: grid; place-content: center; text-decoration: none; color: #0a0b0f; background: linear-gradient(135deg, var(--primary), #6cf1e3); box-shadow: 0 10px 24px rgba(0,0,0,.35); border: 0; transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease; }
.fab-top:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(0,0,0,.45); }
.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; }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .grid-3, .project-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .grid-3, .project-grid { grid-template-columns: 1fr; }
  .nav { position: fixed; inset: var(--header-h) 0 auto 0; background: #0b0d12; border-bottom: 1px solid rgba(255,255,255,0.06); padding: .8rem 4vw; transform: translateY(-100%); transition: transform .3s ease; flex-direction: column; gap: .8rem; }
  .nav.open { transform: translateY(0); }
  .nav-toggle { display: inline-block; }
  .lang-switch { justify-self: end; }
  .footer-grid { grid-template-columns: 1fr; }
  .fab-top { right: 14px; bottom: 14px; }
}