*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* ── Brand tokens ── */
  --color-ink: #0E1524;        /* primary text, replaces pure black */
  --color-navy: #0F2A4A;       /* nav active states, dark surfaces if any */
  --color-accent: #2F5DFF;     /* primary CTA, links, focus rings, active states */
  --color-accent-deep: #1E3FCC;/* hover/pressed state for accent */
  --color-slate: #4B5A72;      /* secondary text — role lines, captions, tag text */
  --color-mist: #EEF1F6;       /* pill backgrounds, card backgrounds, dividers */
  --color-paper: #FFFFFF;      /* page background — stays white/near-white */

  --font-display: 'Space Grotesk', 'Inter', sans-serif; /* name, H1/H2, nav, hero */
  --font-body: 'Inter', sans-serif;                      /* paragraphs, case study body copy */

  /* ── Theme-mapped tokens (light) ── */
  --bg: var(--color-paper); --bg2: var(--color-mist); --bg3: var(--color-mist);
  --text: var(--color-ink); --text2: var(--color-slate); --text3: var(--color-slate);
  --border: var(--color-mist); --border2: rgba(75, 90, 114, 0.22);
  --tag-bg: var(--color-mist); --tag-text: var(--color-slate);
  --user-bg: var(--color-ink); --user-text: var(--color-paper);
  --bot-bg: var(--color-mist); --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --focus-ring: rgba(47, 93, 255, 0.35);
  --chat-header-bg: var(--color-mist); --chat-surface: #FBFCFE;
}
/* Manual dark override */
[data-theme="dark"] {
  --bg: #111110; --bg2: #1a1a18; --bg3: #222220;
  --text: #f0eeea; --text2: #9a9893; --text3: #5a5955;
  --border: rgba(255,255,255,0.07); --border2: rgba(255,255,255,0.12);
  --tag-bg: #222220; --tag-text: #9a9893;
  --user-bg: #f0eeea; --user-text: #111110;
  --bot-bg: #1a1a18; --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --chat-header-bg: #1a1a18; --chat-surface: #111110;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111110; --bg2: #1a1a18; --bg3: #222220;
    --text: #f0eeea; --text2: #9a9893; --text3: #5a5955;
    --border: rgba(255,255,255,0.07); --border2: rgba(255,255,255,0.12);
    --tag-bg: #222220; --tag-text: #9a9893;
    --user-bg: #f0eeea; --user-text: #111110;
    --bot-bg: #1a1a18; --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --chat-header-bg: #1a1a18; --chat-surface: #111110;
  }
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-body), -apple-system, sans-serif; font-size: 14px; line-height: 1.6; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
h1, h2, h3, .nav-name, .nav-links a { font-family: var(--font-display), -apple-system, sans-serif; }

/* ── SKIP LINK ── */
.skip-link {
  position: absolute; top: 0; left: 0; z-index: 1100;
  transform: translateY(-100%);
  background: var(--text); color: var(--bg);
  padding: 10px 18px; font-size: 13px; font-weight: 500;
  text-decoration: none; border-radius: 0 0 8px 0;
  transition: transform .15s;
}
.skip-link:focus { transform: translateY(0); }

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 48px; border-bottom: 1px solid var(--border);
  background: var(--bg);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px;
}
.nav-name { font-size: 13px; font-weight: 500; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 24px; }
.nav-links a { font-size: 12px; color: var(--text2); text-decoration: none; transition: color .15s; }
.nav-links a:hover { color: var(--color-accent); }
.nav-links a[aria-current="page"] { color: var(--color-accent); }

/* ── HERO ── */
#hero {
  padding-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

/* LEFT: intro */
.hero-left {
  display: flex; flex-direction: column; justify-content: center;
  padding: 64px 56px 64px 64px;
  border-right: 1px solid var(--border);
}
.hero-eyebrow {
  font-size: 11px; font-weight: 500; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text3); margin-bottom: 24px;
}
.hero-photo {
  width: 88px; height: 88px; border-radius: 50%;
  object-fit: cover; object-position: center top;
  border: 1px solid var(--border2); margin-bottom: 28px;
}
.hero-name { font-size: 36px; font-weight: 500; letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 6px; }
.hero-title { font-size: 14px; color: var(--text2); margin-bottom: 24px; }
.hero-bio { font-size: 15px; color: var(--text2); line-height: 1.7; max-width: 420px; margin-bottom: 36px; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 40px; }
.hero-tag { font-size: 11px; padding: 3px 9px; background: var(--tag-bg); color: var(--tag-text); border-radius: 4px; }

.hero-meta { display: flex; flex-direction: column; gap: 10px; }
.hero-meta-row { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text2); }
.hero-meta-icon { width: 20px; height: 20px; border-radius: 4px; background: var(--bg3); display: flex; align-items: center; justify-content: center; font-size: 10px; flex-shrink: 0; }
.hero-meta-row a { color: var(--color-accent); text-decoration: none; transition: color .15s; }
.hero-meta-row a:hover { color: var(--color-accent-deep); }

.cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 32px; padding: 10px 20px;
  background: var(--color-accent); color: var(--color-paper);
  border: none; border-radius: 8px;
  font-family: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer; text-decoration: none; transition: background-color .15s;
  width: fit-content;
}
.cta-btn:hover { background: var(--color-accent-deep); }

/* RIGHT: chat — a compact card centered in the column, not a full-height panel */
.hero-right {
  display: flex; align-items: center; justify-content: center;
  padding: 64px 56px;
}

.hero-chat-widget {
  display: flex; flex-direction: column;
  width: 100%; max-width: 420px; height: 340px;
  border: 1px solid var(--border2); border-radius: 14px;
  background: var(--chat-surface);
  overflow: hidden;
}
.hero-chat-widget .chat-topbar { margin-top: 0; height: 40px; padding: 0 16px; background: var(--chat-header-bg); }
.hero-chat-widget .topbar-label { font-size: 12px; color: var(--text3); }
.hero-chat-widget .msgs { padding: 12px 16px; gap: 10px; }
.hero-chat-widget .bub { font-size: 12px; padding: 8px 12px; }
.hero-chat-widget .chips { padding: 6px 16px; }
.hero-chat-widget .chip { font-size: 11px; padding: 4px 10px; }
.hero-chat-widget .input-row { padding: 8px 12px 12px; border-top: none; }
.hero-chat-widget .inp { height: 34px; font-size: 13px; }
.hero-chat-widget .sbtn {
  width: 34px; height: 34px; padding: 0; border-radius: 50%;
  font-size: 0; position: relative; flex-shrink: 0;
}
.hero-chat-widget .sbtn::after {
  content: '→'; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; color: var(--color-paper);
}
.chat-topbar {
  height: 52px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 24px; gap: 8px; flex-shrink: 0;
  margin-top: 48px;
}
.dot-green { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; }
.topbar-label { font-size: 13px; color: var(--text2); }
.msgs { flex: 1; overflow-y: auto; padding: 24px 28px; display: flex; flex-direction: column; gap: 14px; scrollbar-width: thin; scrollbar-color: var(--border2) transparent; }
.msg { display: flex; gap: 10px; animation: pop .25s ease; }
.msg.user { flex-direction: row-reverse; }
@keyframes pop { from { opacity:0; transform:translateY(5px); } to { opacity:1; transform:none; } }
.av { width: 28px; height: 28px; border-radius: 50%; background: var(--bg3); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 500; color: var(--text2); flex-shrink: 0; margin-top: 1px; overflow: hidden; }
.av img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.msg.user .av { background: var(--user-bg); color: var(--user-text); border-color: transparent; font-size: 9px; }
.mc { max-width: 80%; display: flex; flex-direction: column; gap: 3px; }
.ml { font-size: 11px; color: var(--text3); font-weight: 500; padding: 0 2px; }
.msg.user .ml { text-align: right; }
.bub { padding: 10px 14px; font-size: 13px; line-height: 1.65; background: var(--bot-bg); border: 1px solid var(--border); color: var(--text); box-shadow: var(--shadow); border-radius: 4px 12px 12px 12px; }
.msg.user .bub { background: var(--user-bg); color: var(--user-text); border-color: transparent; border-radius: 12px 4px 12px 12px; }
.bub b { font-weight: 500; }
.bub i { color: var(--text2); }
.bub a { color: var(--color-accent); }
.msg.user .bub a { color: var(--user-text); }

/* case study card inside chat */
.cs-card { margin-top: 10px; border: 1px solid var(--border2); border-radius: 8px; overflow: hidden; background: var(--bg); }
.cs-card-img { width: 100%; height: 120px; object-fit: cover; object-position: top; display: block; }
.cs-card-body { padding: 12px 14px; }
.cs-card-tag { font-size: 10px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text3); margin-bottom: 4px; }
.cs-card-title { font-size: 13px; font-weight: 500; margin-bottom: 4px; }
.cs-card-desc { font-size: 12px; color: var(--text2); line-height: 1.5; margin-bottom: 10px; }
.cs-card-link { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; font-weight: 500; color: var(--text); text-decoration: none; padding: 5px 10px; border: 1px solid var(--border2); border-radius: 5px; transition: background .15s; }
.cs-card-link:hover { background: var(--bg2); }

/* typing */
.typing { display: none; align-items: center; gap: 10px; padding: 0 28px 6px; }
.typing.show { display: flex; }
.tbub { background: var(--bot-bg); border: 1px solid var(--border); border-radius: 4px 12px 12px 12px; padding: 10px 14px; display: flex; gap: 4px; align-items: center; box-shadow: var(--shadow); }
.tdot { width: 5px; height: 5px; border-radius: 50%; background: var(--text3); animation: bounce 1.1s infinite; }
.tdot:nth-child(2){animation-delay:.18s} .tdot:nth-child(3){animation-delay:.36s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}
.chips { padding: 8px 28px; display: flex; flex-wrap: wrap; gap: 6px; border-top: 1px solid var(--border); flex-shrink: 0; }
.chip { font-size: 12px; padding: 5px 12px; border: 1px solid transparent; border-radius: 20px; background: var(--color-mist); color: var(--color-slate); cursor: pointer; transition: all .15s; white-space: nowrap; font-family: inherit; }
.chip:hover, .chip.selected { border-color: var(--color-accent); color: var(--color-paper); background: var(--color-accent); }
.input-row { display: flex; gap: 8px; padding: 10px 20px 16px; border-top: 1px solid var(--border); flex-shrink: 0; }
.inp { flex: 1; height: 38px; padding: 0 13px; border: 1px solid var(--border2); border-radius: 8px; background: var(--bg2); color: var(--text); font-family: inherit; font-size: 13px; outline: none; transition: border-color .15s, box-shadow .15s; }
.inp::placeholder { color: var(--text3); }
.inp:focus { border-color: var(--color-accent); background: var(--bg); box-shadow: 0 0 0 3px var(--focus-ring); }
.sbtn { height: 38px; padding: 0 16px; background: var(--color-accent); color: var(--color-paper); border: none; border-radius: 8px; font-family: inherit; font-size: 12px; font-weight: 500; cursor: pointer; transition: background-color .15s; flex-shrink: 0; }
.sbtn:hover { background: var(--color-accent-deep); }
.sbtn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ── lead capture form inside chat bubble ── */
.lead-form { margin-top: 12px; display: flex; flex-direction: column; gap: 9px; }
.lead-input {
  width: 100%; padding: 8px 12px;
  border: 1px solid var(--border2); border-radius: 7px;
  background: var(--bg); color: var(--text);
  font-family: inherit; font-size: 13px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.lead-input::placeholder { color: var(--text3); }
.lead-input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--focus-ring); }
.lead-submit {
  align-self: flex-start; padding: 8px 18px;
  background: var(--color-accent); color: var(--color-paper);
  border: none; border-radius: 7px;
  font-family: inherit; font-size: 12px; font-weight: 500;
  cursor: pointer; transition: background-color .15s;
}
.lead-submit:hover { background: var(--color-accent-deep); }
.lead-submit:disabled { opacity: 0.35; cursor: not-allowed; }
.lead-success { font-size: 13px; color: var(--text2); padding: 4px 0; }

/* ── CASE STUDIES SECTION ── */
#case-studies { padding: 96px 64px; border-top: 1px solid var(--border); }
.section-label { font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text3); margin-bottom: 12px; }
.section-title { font-size: 28px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 56px; }

.cs-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }

.cs-full {
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  transition: border-color .2s;
  display: flex; flex-direction: column;
}
.cs-full:hover { border-color: var(--color-accent); }

.cs-cover {
  width: 100%; aspect-ratio: 16/10; object-fit: cover; object-position: top;
  display: block; border-bottom: 1px solid var(--border);
  background: var(--bg3);
}

/* real screenshots with a portrait/mobile aspect ratio would get cropped to a sliver under object-fit:cover */
.cs-cover.is-portrait,
.cs-page-hero.is-portrait,
.cs-card-img.is-portrait {
  object-fit: contain;
  object-position: center;
  background: var(--bg3);
}

.cs-body { padding: 24px 28px 28px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.cs-eyebrow { font-size: 10px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text3); }
.cs-title { font-size: 20px; font-weight: 500; letter-spacing: -0.01em; }
.cs-desc { font-size: 14px; color: var(--text2); line-height: 1.65; }

.cs-roles { display: flex; flex-wrap: wrap; gap: 5px; }
.cs-role { font-size: 11px; padding: 3px 8px; background: var(--tag-bg); color: var(--tag-text); border-radius: 4px; }

.cs-highlights { display: flex; flex-direction: column; gap: 8px; }
.cs-highlight { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; }
.cs-highlight-label { font-size: 11px; font-weight: 500; color: var(--text3); white-space: nowrap; padding-top: 2px; }
.cs-highlight-val { font-size: 13px; color: var(--text2); line-height: 1.5; }

.cs-actions { display: flex; gap: 10px; margin-top: auto; padding-top: 8px; }
.cs-btn-primary {
  flex: 1; padding: 10px 0; background: var(--color-accent); color: var(--color-paper);
  border: none; border-radius: 8px; font-family: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer; text-align: center; text-decoration: none; transition: background-color .15s; display: block;
}
.cs-btn-primary:hover { background: var(--color-accent-deep); }
.cs-btn-secondary {
  padding: 10px 16px; background: transparent; color: var(--text2);
  border: 1px solid var(--border2); border-radius: 8px; font-family: inherit;
  font-size: 13px; cursor: pointer; text-decoration: none; transition: all .15s; display: block;
}
.cs-btn-secondary:hover { border-color: var(--text); color: var(--text); }

/* ── CASE STUDY DETAIL (shared by /case-studies/ pages) ── */
.cs-page-hero { width: 100%; height: 440px; border-radius: 8px; border: 1px solid var(--border); object-fit: cover; object-position: top; display: block; background: var(--bg2); }
.cs-detail-label { font-size: 12px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text3); margin-bottom: 10px; }
.cs-detail-text { font-size: 14px; color: var(--text2); line-height: 1.7; }
.cs-detail-text b { color: var(--text); font-weight: 500; }
.approach-card { padding: 16px; background: var(--bg2); border-radius: 8px; border: 1px solid var(--border); }
.approach-card-title { font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.approach-card-text { font-size: 13px; color: var(--text2); line-height: 1.6; }
.cs-detail-text + .cs-detail-text { margin-top: 12px; }
.cs-ai-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.cs-ai-list li { font-size: 14px; color: var(--text2); line-height: 1.7; padding-left: 18px; position: relative; }
.cs-ai-list li::before { content: "→"; position: absolute; left: 0; color: var(--text3); }
.cs-ai-placeholder { font-style: italic; color: var(--text3); border: 1px dashed var(--border2); border-radius: 6px; padding: 6px 10px; display: inline-block; }

/* ── ABOUT / CV PAGE ── */
.cv-job { padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.cv-job:last-child { border-bottom: none; padding-bottom: 0; }
.cv-job-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 8px; }
.cv-job-role { font-size: 15px; font-weight: 500; color: var(--text); }
.cv-job-company { font-size: 13px; color: var(--text2); margin-top: 2px; }
.cv-job-dates { font-size: 12px; color: var(--text3); white-space: nowrap; }
.cv-job-desc { font-size: 14px; color: var(--text2); line-height: 1.7; }
.cv-job-list { margin: 10px 0 0 18px; display: flex; flex-direction: column; gap: 8px; }
.cv-job-list li { font-size: 14px; color: var(--text2); line-height: 1.6; }
.cv-job-list b { color: var(--text); font-weight: 500; }
.cv-lang-list { display: flex; flex-direction: column; gap: 8px; }
.cv-lang-row { display: flex; justify-content: space-between; max-width: 300px; font-size: 14px; }
.cv-lang-row span:first-child { color: var(--text); }
.cv-lang-row span:last-child { color: var(--text2); }

/* ── SERVICES SECTION ── */
#services { padding: 96px 64px; border-top: 1px solid var(--border); }
.services-intro { font-size: 15px; color: var(--text2); line-height: 1.7; max-width: 640px; margin: 16px 0 40px; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-bottom: 32px; }

/* ── CONTACT SECTION ── */
#contact { padding: 96px 64px; border-top: 1px solid var(--border); }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }

.contact-intro p { font-size: 15px; color: var(--text2); line-height: 1.7; max-width: 380px; margin-top: 16px; }
.contact-links { display: flex; flex-direction: column; gap: 10px; margin-top: 28px; }
.contact-link-item { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--color-accent); text-decoration: none; padding: 4px 0; transition: color .15s; }
.contact-link-item:hover { color: var(--color-accent-deep); }
.cli { width: 22px; height: 22px; border-radius: 5px; background: var(--bg3); display: flex; align-items: center; justify-content: center; font-size: 11px; flex-shrink: 0; }

/* contact form */
.contact-form { display: flex; flex-direction: column; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-label { font-size: 11px; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text2); }
.form-input, .form-textarea {
  padding: 10px 14px; border: 1px solid var(--border2); border-radius: 8px;
  background: var(--bg2); color: var(--text); font-family: inherit; font-size: 14px;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text3); }
.form-input:focus, .form-textarea:focus { border-color: var(--color-accent); background: var(--bg); box-shadow: 0 0 0 3px var(--focus-ring); }
.form-textarea { min-height: 110px; resize: vertical; }
.form-submit {
  height: 42px; padding: 0 24px; background: var(--color-accent); color: var(--color-paper);
  border: none; border-radius: 8px; font-family: inherit; font-size: 13px;
  font-weight: 500; cursor: pointer; transition: background-color .15s; align-self: flex-start;
}
.form-submit:hover { background: var(--color-accent-deep); }
.form-success { display: none; padding: 14px 18px; background: var(--bg2); border: 1px solid var(--border2); border-radius: 8px; font-size: 14px; color: var(--text2); }
.form-success.show { display: block; }

/* ── CASE STUDIES — "view all" link on homepage ── */
.cs-viewall { display: flex; justify-content: center; margin-top: 40px; }

/* ── CASE STUDIES — standalone /case-studies/ list + single pages ── */
.cs-page { padding: 144px 64px 96px; }

.cs-back-link { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text2); text-decoration: none; margin-bottom: 24px; transition: color .15s; }
.cs-back-link:hover { color: var(--text); }

.cs-hero-section { padding: 144px 64px 0; }
.cs-hero-eyebrow { font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text3); margin-bottom: 16px; }
.cs-hero-title { font-size: 32px; font-weight: 500; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 14px; max-width: 760px; }
.cs-hero-subtitle { font-size: 16px; color: var(--text2); line-height: 1.6; max-width: 640px; margin-bottom: 20px; }
.cs-hero-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 32px; }

.cs-hero-img-wrap { padding: 0 64px; margin-bottom: 56px; }

.cs-detail-layout { padding: 0 64px 96px; display: grid; grid-template-columns: 1.6fr 1fr; gap: 56px; align-items: start; }
.cs-detail-main { display: flex; flex-direction: column; gap: 40px; }

.cs-gallery-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.cs-gallery-img { width: 100%; height: auto; max-height: 480px; object-fit: contain; border-radius: 8px; border: 1px solid var(--border); background: var(--bg2); display: block; }
.cs-gallery-img:focus { outline: none; box-shadow: 0 0 0 3px var(--focus-ring); }
.cs-gallery-item { display: flex; flex-direction: column; gap: 8px; }
.cs-gallery-caption { font-size: 13px; color: var(--color-slate); line-height: 1.5; }
.cs-detail-block > .cs-title { margin-bottom: 10px; }
.cs-detail-block > .cs-gallery-grid { margin-top: 14px; }

.cs-chat-panel {
  position: sticky; top: 64px;
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  display: flex; flex-direction: column; height: 560px; background: var(--bg);
}
.cs-chat-panel .chat-topbar { margin-top: 0; }

/* ── FOOTER ── */
footer {
  padding: 28px 64px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; color: var(--text3);
}
footer a { color: var(--text3); text-decoration: none; }
footer a:hover { color: var(--text2); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  #hero { grid-template-columns: 1fr; }
  .hero-left { padding: 80px 32px 40px; border-right: none; }
  .hero-right { padding: 0 32px 64px; }
  #case-studies, #contact { padding: 64px 32px; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
  footer { padding: 24px 32px; }

  .cs-page { padding: 120px 32px 64px; }
  .cs-hero-section { padding: 120px 32px 0; }
  .cs-hero-img-wrap { padding: 0 32px; margin-bottom: 40px; }
  .cs-page-hero { height: 320px; }
  .cs-detail-layout { padding: 0 32px 64px; grid-template-columns: 1fr; gap: 32px; }
  .cs-chat-panel { position: relative; top: 0; height: 480px; }
}
@media (max-width: 600px) {
  nav { padding: 0 20px; }
  .nav-links { gap: 16px; }
  .hero-left { padding: 72px 20px 36px; }
  .hero-name { font-size: 28px; }
  .hero-chat-widget { height: 300px; max-width: 100%; }
  #case-studies, #contact { padding: 56px 20px; }
  footer { padding: 20px; flex-direction: column; gap: 8px; text-align: center; }

  .cs-page { padding: 104px 20px 56px; }
  .cs-hero-section { padding: 104px 20px 0; }
  .cs-hero-title { font-size: 26px; }
  .cs-hero-img-wrap { padding: 0 20px; margin-bottom: 32px; }
  .cs-detail-layout { padding: 0 20px 56px; }
}

.lightbox-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.92);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: opacity .2s ease;
  z-index: 1000;
}
.lightbox-overlay.open { opacity: 1; visibility: visible; }
.lightbox-img {
  max-width: 90vw; max-height: 88vh; object-fit: contain;
  border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute; background: none; border: none; color: #f0eeea;
  cursor: pointer; font-size: 28px; line-height: 1; padding: 12px;
  transition: opacity .15s; opacity: 0.7;
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { opacity: 1; }
.lightbox-close { top: 16px; right: 16px; font-size: 20px; }
.lightbox-prev { left: 16px; top: 50%; transform: translateY(-50%); font-size: 40px; }
.lightbox-next { right: 16px; top: 50%; transform: translateY(-50%); font-size: 40px; }
@media (max-width: 640px) {
  .lightbox-prev, .lightbox-next { font-size: 28px; padding: 8px; }
}