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

:root {
  --bg:           #0d0f14;
  --bg-alt:       #12151c;
  --surface:      #1a1e28;
  --surface-2:    #222637;
  --border:       #2a2f3d;
  --accent:       #6366f1;
  --accent-light: #818cf8;
  --accent-glow:  rgba(99, 102, 241, 0.25);
  --text:         #e2e4ed;
  --text-muted:   #8b90a6;
  --text-dim:     #555b74;
  --success:      #22c55e;
  --error:        #ef4444;

  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', monospace;

  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,0,0,.45);
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

/* =============================================
   LAYOUT UTILITIES
   ============================================= */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}
.section--alt { background: var(--bg-alt); }

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__sub {
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 56px;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn--primary:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 0 32px var(--accent-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-2px);
}

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

/* =============================================
   NAVIGATION
   ============================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 64px;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled { border-color: var(--border); }

.nav__logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: 0.01em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav__links a {
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all var(--transition);
}
.nav__links a:hover { color: var(--text); background: var(--surface); }

.nav__cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 20px !important;
}
.nav__cta:hover { background: var(--accent-light) !important; }

/* Burger (mobile) */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 80px 48px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero__content { flex: 1; max-width: 600px; }

.hero__eyebrow {
  font-size: 0.95rem;
  color: var(--accent-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero__name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  background: linear-gradient(135deg, #fff 0%, var(--accent-light) 60%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.hero__role {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 20px;
}

.hero__sub {
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 40px;
}

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

/* Avatar / Photo visual */
.hero__visual {
  position: relative;
  width: 320px;
  height: 380px;
  flex-shrink: 0;
}

/* Real portrait photo */
.hero__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: bottom center;
  z-index: 2;
  filter: drop-shadow(0 0 40px var(--accent-glow));
  transition: filter var(--transition);
}
.hero__photo:hover {
  filter: drop-shadow(0 0 64px rgba(99,102,241,0.4));
}

/* Fallback initials avatar */
.hero__avatar {
  position: absolute;
  inset: 24px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.hero__avatar-initials {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-light);
  font-family: var(--font-mono);
}

.hero__ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  opacity: 0.2;
  animation: pulse-ring 3s ease-in-out infinite;
}
.hero__ring--1 { inset: 16px; animation-delay: 0s; }
.hero__ring--2 { inset: 0;    animation-delay: 1s; }

@keyframes pulse-ring {
  0%, 100% { opacity: 0.12; transform: scale(1); }
  50%       { opacity: 0.30; transform: scale(1.03); }
}

/* =============================================
   QUICK-NAV KACHELN — Glassmorphism
   ============================================= */
.quicknav {
  position: relative;
  padding: 64px 0 80px;
  background: var(--bg);
  /* subtle radial glow so backdrop-filter has something to blur */
  background-image:
    radial-gradient(ellipse 70% 40% at 20% 60%, rgba(99,102,241,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 30%, rgba(6,182,212,0.06) 0%, transparent 60%);
}

.quicknav__label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.quicknav__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
/* Row 1: 3 cards à 2 columns = 6 columns total */
.qcard:nth-child(1),
.qcard:nth-child(2),
.qcard:nth-child(3) { grid-column: span 2; }
/* Row 2: 2 cards centered → start at col 2, each span 2 */
.qcard:nth-child(4) { grid-column: 2 / span 2; }
.qcard:nth-child(5) { grid-column: 4 / span 2; }

/* ── Glassmorphism base card ── */
.qcard {
  position: relative;
  display: flex;
  flex-direction: column;
  /* glass layer */
  background: rgba(20, 24, 36, 0.55);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  transition:
    transform 0.28s cubic-bezier(.34, 1.56, .64, 1),
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

/* color-tinted top border line */
.qcard::after {
  content: '';
  position: absolute;
  top: 0; left: 16px; right: 16px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--qc), transparent);
  opacity: 0.4;
  border-radius: 1px;
  transition: opacity 0.2s ease, left 0.2s ease, right 0.2s ease;
}

/* subtle inner glow overlay */
.qcard::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: radial-gradient(ellipse 80% 60% at 50% -10%, var(--qc-bg), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.qcard:hover {
  transform: translateY(-8px);
  background: rgba(26, 30, 44, 0.72);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 1px var(--qc),
    inset 0 1px 0 rgba(255,255,255,0.08);
}
.qcard:hover::before { opacity: 1; }
.qcard:hover::after  { opacity: 0.9; left: 8px; right: 8px; }

/* Color themes */
.qcard--blue  { --qc: #3b82f6; --qc-bg: rgba(59,130,246,0.10); }
.qcard--orange{ --qc: #f97316; --qc-bg: rgba(249,115,22,0.10); }
.qcard--green { --qc: #22c55e; --qc-bg: rgba(34,197,94,0.10); }
.qcard--amber { --qc: #f59e0b; --qc-bg: rgba(245,158,11,0.10); }
.qcard--purple{ --qc: #a855f7; --qc-bg: rgba(168,85,247,0.10); }
.qcard--teal  { --qc: #06b6d4; --qc-bg: rgba(6,182,212,0.10); }

/* Icon badge */
.qcard__icon {
  width: 50px; height: 50px;
  border-radius: 13px;
  background: var(--qc-bg);
  border: 1px solid var(--qc);
  border-opacity: 0.25;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-shrink: 0;
  transition: background 0.2s ease, transform 0.25s ease, box-shadow 0.2s ease;
}
.qcard__icon svg {
  width: 24px; height: 24px;
  stroke: var(--qc);
  flex-shrink: 0;
  display: block;
}
.qcard:hover .qcard__icon {
  background: var(--qc-bg);
  transform: scale(1.1) rotate(-4deg);
  box-shadow: 0 0 16px var(--qc-bg);
}

.qcard__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.qcard__desc {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 20px;
}

/* Arrow — always 20×20, no CSS sizing conflict */
.qcard__arrow {
  display: block;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  align-self: flex-end;
  stroke: var(--qc);
  opacity: 0.35;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.qcard:hover .qcard__arrow {
  opacity: 1;
  transform: translateX(5px);
}

/* =============================================
   ABOUT
   ============================================= */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about__text p + p { margin-top: 16px; }
.about__text p { color: var(--text-muted); }

.about__facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.fact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition), transform var(--transition);
}
.fact-card:hover { border-color: var(--accent); transform: translateY(-3px); }

.fact-card__number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-light);
  font-family: var(--font-mono);
}
.fact-card__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition);
}
.skill-group:hover { border-color: var(--accent); }

.skill-group__title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  transition: all var(--transition);
}
.tag:hover { border-color: var(--accent); color: var(--accent-light); }
.tag--sm { font-size: 0.75rem; padding: 3px 10px; }

/* =============================================
   TIMELINE (EXPERIENCE)
   ============================================= */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline__item {
  position: relative;
  margin-bottom: 48px;
}
.timeline__item:last-child { margin-bottom: 0; }

.timeline__marker {
  position: absolute;
  left: -29px;
  top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline__body {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition);
}
.timeline__body:hover { border-color: var(--accent); }

.timeline__date {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline__role {
  font-size: 1.15rem;
  margin: 6px 0 2px;
}

.timeline__company {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 12px;
}

.timeline__desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* =============================================
   CONTACT
   ============================================= */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: start;
}

.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }

.form-group label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input,
.form-group textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }

.form-status {
  font-size: 0.85rem;
  margin-top: 8px;
  min-height: 20px;
}
.form-status.success { color: var(--success); }
.form-status.error   { color: var(--error); }

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: all var(--transition);
}
.contact__link:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateX(4px);
}
.contact__link svg { width: 20px; height: 20px; flex-shrink: 0; }

/* =============================================
   CHAT
   ============================================= */
.chat__wrapper {
  max-width: 720px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.chat__window {
  height: 420px;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
}
.chat__window::-webkit-scrollbar { width: 4px; }
.chat__window::-webkit-scrollbar-track { background: transparent; }
.chat__window::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.chat__message {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  max-width: 85%;
}
.chat__message--user { align-self: flex-end; flex-direction: row-reverse; }
.chat__message--bot  { align-self: flex-start; }

.chat__bubble {
  padding: 12px 18px;
  border-radius: 18px;
  font-size: 0.9rem;
  line-height: 1.6;
}
.chat__message--bot .chat__bubble {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 4px;
}
.chat__message--user .chat__bubble {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

/* Typing indicator */
.typing .chat__bubble {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 16px 18px;
}
.typing .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: bounce 1.2s infinite;
}
.typing .dot:nth-child(2) { animation-delay: 0.15s; }
.typing .dot:nth-child(3) { animation-delay: 0.30s; }
@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

.chat__form {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

.chat__input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  padding: 16px 20px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  outline: none;
}
.chat__input::placeholder { color: var(--text-dim); }

.chat__send {
  border-radius: 0;
  padding: 0 24px;
  border-left: 1px solid var(--border);
  box-shadow: none;
}
.chat__send svg { width: 18px; height: 18px; }

/* =============================================
   NAV ACTIVE STATE
   ============================================= */
.nav__active:not(.nav__cta) {
  color: var(--accent-light) !important;
  background: var(--surface) !important;
}

/* =============================================
   BREADCRUMB
   ============================================= */
.breadcrumb {
  padding: 12px 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  margin-top: 64px; /* nav height */
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-dim);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb svg { stroke: var(--text-dim); flex-shrink: 0; }
.breadcrumb span { color: var(--text); }

/* =============================================
   PAGE HEADER (Unterseiten)
   ============================================= */
.page-header {
  padding: 56px 0 48px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.page-header .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.page-header__icon {
  width: 64px; height: 64px;
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 4px;
}
.page-header__icon svg { flex-shrink: 0; }

.page-header__icon--blue   { background: rgba(59,130,246,0.15); }
.page-header__icon--blue svg   { stroke: #3b82f6; }
.page-header__icon--orange { background: rgba(249,115,22,0.15); }
.page-header__icon--orange svg { stroke: #f97316; }
.page-header__icon--green  { background: rgba(34,197,94,0.15); }
.page-header__icon--green svg  { stroke: #22c55e; }
.page-header__icon--teal   { background: rgba(6,182,212,0.15); }
.page-header__icon--teal svg   { stroke: #06b6d4; }

.page-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  background: linear-gradient(135deg, var(--text) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-header__sub { color: var(--text-muted); font-size: 1rem; }

/* =============================================
   CERTIFICATE CARDS
   ============================================= */
.cert__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.cert-card:hover { border-color: var(--accent); transform: translateY(-4px); }

.cert-card__badge {
  padding: 14px 28px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.cert-card__badge--ihk   { background: rgba(59,130,246,0.15); color: #3b82f6; }
.cert-card__badge--dekra { background: rgba(34,197,94,0.15);  color: #22c55e; }

.cert-card__body { padding: 24px 28px 28px; }

.cert-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.cert-card__issuer {
  display: block;
  font-size: 0.82rem;
  color: var(--accent-light);
  margin-bottom: 6px;
}
.cert-card__date {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-bottom: 12px;
}
.cert-card__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}
.cert-card__img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 16px;
}
.cert-card__actions { display: flex; gap: 10px; flex-wrap: wrap; }

.btn--sm { padding: 8px 18px; font-size: 0.82rem; }

/* Hint box */
.cert-hint {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.cert-hint svg { stroke: var(--accent-light); flex-shrink: 0; margin-top: 2px; }
.cert-hint code {
  background: var(--surface-2);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-light);
}

/* =============================================
   CHAT PAGE VARIANT
   ============================================= */
.chat__wrapper--page { max-width: 100%; }
.chat__wrapper--page .chat__window { height: 520px; }

.chat__hint {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-dim);
}
.chat__hint svg { stroke: var(--text-dim); flex-shrink: 0; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  text-align: center;
  padding: 32px;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* =============================================
   SCROLL REVEAL
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 900px) {
  .hero {
    flex-direction: column-reverse;
    text-align: center;
    padding: 100px 24px 48px;
    min-height: auto;
  }
  .hero__visual { width: 220px; height: 260px; }
  .hero__actions { justify-content: center; }
  .hero__sub { margin: 0 auto 40px; }

  .quicknav__grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .qcard:nth-child(1),
  .qcard:nth-child(2),
  .qcard:nth-child(3),
  .qcard:nth-child(4),
  .qcard:nth-child(5) { grid-column: span 1; }
  .cert__grid { grid-template-columns: 1fr; }
  .page-header { padding: 40px 0 32px; }

  .about__grid { grid-template-columns: 1fr; gap: 40px; }
  .contact__grid { grid-template-columns: 1fr; }
  .contact__info { flex-direction: row; flex-wrap: wrap; }
  .contact__link { flex: 1; min-width: 180px; }

  .nav { padding: 0 20px; }
  .nav__links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
  }
  .nav__links.open { display: flex; }
  .nav__links a { width: 100%; padding: 12px 16px; }
  .nav__burger { display: flex; }
}

@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .hero__name { font-size: 2.4rem; }
  .hero__actions { flex-direction: column; align-items: center; }
  .about__facts { grid-template-columns: 1fr 1fr; }
  .chat__window { height: 320px; }

  .quicknav { padding: 48px 0 56px; }
  .quicknav__grid { grid-template-columns: 1fr; gap: 12px; }
  .qcard:nth-child(4),
  .qcard:nth-child(5) { grid-column: span 1; }
}