/* ═══════════════════════════════════════════════════════
   FOSFORO — Design System
   Concept: editorial light, warm paper, phosphorus amber
   Fonts: Playfair Display (serif) + DM Sans (sans)
═══════════════════════════════════════════════════════ */

/* ─── TOKENS ─── */
:root {
  --paper:        #F7F4EE;
  --white:        #FFFFFF;
  --ink:          #0C0B09;
  --ink-2:        #48463F;
  --ink-3:        #918E85;
  --glow:         #E86208;
  --glow-dark:    #B84C04;
  --glow-pale:    #FEF1E6;
  --surface:      #EEEAE0;
  --surface-2:    #E5E1D6;
  --border:       #D9D5C9;
  --dark:         #0D0B08;
  --dark-2:       #1C1A14;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.375rem;
  --text-2xl:  clamp(1.5rem, 2vw + 1rem, 2rem);
  --text-3xl:  clamp(2rem, 3vw + 1rem, 3rem);
  --text-hero: clamp(4.5rem, 10vw + 1rem, 10rem);

  --s1: 0.5rem; --s2: 1rem;  --s3: 1.5rem;
  --s4: 2rem;   --s6: 3rem;  --s8: 4rem;
  --s12: 6rem;  --s16: 8rem; --s24: 12rem;

  --radius:    6px;
  --radius-lg: 16px;
  --shadow:    0 1px 4px rgba(12,11,9,0.08);
  --shadow-md: 0 4px 24px rgba(12,11,9,0.1);
  --transition: 0.22s ease;
  --max-width: 1200px;
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}
body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; touch-action: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: rgba(232,98,8,0.15); }
ul { list-style: none; }
button {
  cursor: pointer;
  font: inherit;
  -webkit-tap-highlight-color: rgba(232,98,8,0.15);
}

/* ─── CONTAINER ─── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}

/* ─── TYPOGRAPHY ─── */
h2 { font-family: var(--font-serif); line-height: 1.15; }
h3 { font-family: var(--font-serif); line-height: 1.2; }

.section-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--glow);
  margin-bottom: var(--s2);
  display: flex;
  align-items: center;
  gap: var(--s2);
}
.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--glow);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: var(--s4);
}
.section-title .accent { color: var(--glow); }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s1);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-primary:hover {
  background: var(--dark-2);
  border-color: var(--dark-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-glow {
  background: var(--glow);
  color: var(--white);
  border-color: var(--glow);
}
.btn-glow:hover {
  background: var(--glow-dark);
  border-color: var(--glow-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(232,98,8,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}
.btn-outline-light {
  background: transparent;
  color: var(--paper);
  border-color: rgba(247,244,238,0.35);
}
.btn-outline-light:hover {
  border-color: var(--paper);
  background: rgba(247,244,238,0.1);
}

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.nav.scrolled {
  background: rgba(247,244,238,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
  padding: 0.85rem 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: var(--s4);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  flex-shrink: 0;
}
.nav-logo .dot { color: var(--glow); }
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s4);
  margin-left: auto;
}
.nav-links li a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-2);
  transition: color var(--transition);
  position: relative;
}
.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--glow);
  transition: width var(--transition);
}
.nav-links li a:hover { color: var(--ink); }
.nav-links li a:hover::after { width: 100%; }
.nav-cta {
  background: var(--glow) !important;
  color: var(--white) !important;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: var(--transition);
}
.nav-cta:hover {
  background: var(--glow-dark) !important;
  transform: translateY(-1px);
}
.nav-cta::after { display: none !important; }

/* ─── LANGUAGE SELECTOR ─── */
.lang-selector {
  position: relative;
}
.lang-btn {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--ink-2);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  min-height: 32px;
}
.lang-btn:hover,
.lang-selector.open .lang-btn {
  border-color: var(--glow);
  color: var(--glow);
}
.lang-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  min-width: 140px;
  z-index: 200;
}
.lang-selector.open .lang-menu { display: block; }
.lang-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.55rem 1rem;
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-2);
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
}
.lang-option:hover {
  background: var(--glow-pale);
  color: var(--glow);
}
.lang-option.active {
  color: var(--glow);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 10px;
  margin-left: auto;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius);
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  transition: var(--transition);
  transform-origin: center;
}

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  min-height: 100svh;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-bottom: var(--s8);
  padding-top: 5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    transparent, transparent 79px,
    var(--border) 79px, var(--border) 80px
  );
  opacity: 0.35;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}
.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--s4);
  display: flex;
  align-items: center;
  gap: var(--s2);
}
.hero-eyebrow::before {
  content: '';
  width: 32px; height: 1px;
  background: var(--ink-3);
}
h1.hero-name {
  display: flex;
  flex-direction: column;
  line-height: 0.92;
  margin-bottom: var(--s6);
  font-size: inherit;
  font-weight: inherit;
}
.hero-name-first {
  font-family: var(--font-serif);
  font-size: var(--text-hero);
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.hero-name-last {
  font-family: var(--font-serif);
  font-size: var(--text-hero);
  font-weight: 700;
  color: var(--glow);
  letter-spacing: -0.02em;
  font-style: italic;
}
.hero-rule {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin-bottom: var(--s6);
}
.hero-bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s6);
  flex-wrap: wrap;
}
.hero-tagline {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.5vw, 1.875rem);
  font-style: italic;
  color: var(--ink-2);
  line-height: 1.4;
  max-width: 28ch;
}
.hero-actions {
  display: flex;
  gap: var(--s2);
  flex-wrap: wrap;
  flex-shrink: 0;
}
.hero-floaters {
  position: absolute;
  bottom: var(--s6);
  right: clamp(1.25rem, 5vw, 3rem);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--s1);
}
.hero-floaters span {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ─── SECTIONS ─── */
.section { padding: clamp(3rem, 6vw, 5rem) 0; }
.about-section   { background: var(--white); padding-top: clamp(1.5rem, 3vw, 2.5rem); }
.exp-section     { background: var(--surface); }
.books-section   { background: var(--white); }
.blog-section    { background: var(--paper); }
.contact-section { background: var(--dark); }

/* ─── ABOUT ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s8);
  align-items: start;
}
.about-text p {
  color: var(--ink-2);
  margin-bottom: var(--s2);
  font-size: var(--text-lg);
  line-height: 1.65;
}
.about-text p strong { color: var(--ink); font-weight: 600; }
.about-text .btn { margin-top: var(--s4); }

/* ─── AI SECTION ─── */
.ai-section { background: var(--surface); }
.ai-section .section-label { color: var(--glow); }
.ai-section .section-label::before { background: var(--glow); }
.ai-section .section-title { margin-bottom: var(--s8); }
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s4);
}
.ai-card {
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-lg);
  padding: var(--s6);
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.ai-card:hover {
  border-color: var(--glow);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(232,98,8,0.08);
}
.ai-card-icon {
  color: var(--glow);
  margin-bottom: var(--s1);
  flex-shrink: 0;
}
.ai-card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--ink);
  font-weight: 700;
  margin: 0;
  line-height: 1.25;
}
.ai-card-desc {
  font-size: var(--text-sm);
  color: var(--ink-2);
  line-height: 1.7;
  margin: 0;
}
.about-numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s2);
  position: sticky;
  top: 6rem;
}
.stat-item {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s4);
  transition: var(--transition);
}
.stat-item:hover {
  border-color: var(--glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.stat-number {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-number sup {
  font-size: 0.5em;
  color: var(--glow);
  font-weight: 700;
  vertical-align: super;
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--ink-3);
  font-weight: 500;
  line-height: 1.4;
}

/* ─── TIMELINE ─── */
.timeline { position: relative; }
.timeline-item {
  display: grid;
  grid-template-columns: 110px 1px 1fr;
  gap: 0 var(--s6);
  margin-bottom: var(--s8);
}
.timeline-year {
  font-family: var(--font-serif);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--glow);
  text-align: right;
  padding-top: 0.25rem;
  line-height: 1.4;
}
.timeline-year small {
  display: block;
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--ink-3);
  font-family: var(--font-sans);
}
.timeline-spine {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.timeline-spine::before {
  content: '';
  position: absolute;
  top: 8px; bottom: -64px;
  width: 1px;
  background: var(--border);
  left: 50%;
  transform: translateX(-50%);
}
.timeline-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
  margin-top: 0.35rem;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}
.timeline-item:hover .timeline-dot { background: var(--glow); transform: scale(1.5); }
.timeline-item.featured .timeline-dot { background: var(--glow); width: 12px; height: 12px; }
.timeline-body h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.timeline-org {
  font-size: var(--text-sm);
  color: var(--glow);
  font-weight: 600;
  margin-bottom: var(--s2);
}
.timeline-body p {
  color: var(--ink-2);
  font-size: var(--text-base);
  line-height: 1.75;
  margin-bottom: var(--s2);
}
.timeline-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}
.timeline-chip {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  background: var(--surface-2);
  color: var(--ink-2);
  padding: 0.25rem 0.625rem;
  border-radius: 100px;
}
.timeline-item.featured .timeline-chip {
  background: var(--glow-pale);
  color: var(--glow-dark);
}
.timeline-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--glow);
  margin-top: var(--s2);
  transition: gap var(--transition);
}
.timeline-link:hover { gap: 0.5rem; }
.timeline-item:last-child .timeline-spine::before { display: none; }

/* ─── FOSFORO ─── */
.fosforo-section { background: var(--paper); }

.fosforo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s12);
  align-items: start;
  margin-top: var(--s4);
}
.fosforo-text p {
  color: var(--ink-2);
  margin-bottom: var(--s2);
  line-height: 1.65;
}
.fosforo-text p strong { color: var(--ink); font-weight: 600; }
.fosforo-text .btn { margin-top: var(--s4); }

.fosforo-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s3);
  position: sticky;
  top: 6rem;
}
.fosforo-stat {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s4) var(--s3);
  transition: var(--transition);
}
.fosforo-stat:hover {
  border-color: var(--glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.fosforo-stat-num {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.fosforo-stat-num sup {
  font-size: 0.5em;
  color: var(--glow);
  font-weight: 700;
  vertical-align: super;
}
.fosforo-stat-lbl {
  font-size: var(--text-sm);
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── BROWN ENTERPRISES ─── */
.brown-section {
  background: var(--dark);
  color: var(--paper);
}
.brown-section .section-label { color: var(--glow); }
.brown-section .section-label::before { background: var(--glow); }
.brown-section .section-title { color: var(--paper); }
.brown-section .section-title .accent { color: var(--glow); }

.brown-intro { max-width: 760px; margin-bottom: var(--s8); }
.brown-intro p {
  color: rgba(247,244,238,0.75);
  margin-bottom: var(--s2);
  line-height: 1.65;
}
.brown-intro p strong { color: var(--paper); font-weight: 600; }

.brown-services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s4);
  margin-bottom: var(--s8);
}
.brown-svc {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: var(--s4);
  transition: var(--transition);
}
.brown-svc:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--glow);
  transform: translateY(-2px);
}
.brown-svc-icon {
  font-size: 1.75rem;
  color: var(--glow);
  margin-bottom: var(--s2);
  display: block;
}
.brown-svc-title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--paper);
  margin-bottom: var(--s1);
}
.brown-svc-desc {
  font-size: var(--text-sm);
  color: rgba(247,244,238,0.6);
  line-height: 1.6;
}

.brown-partners { margin-bottom: var(--s6); }
.brown-partners-lbl {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--glow);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--s2);
}
.brown-partners-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s1);
}
.brown-partner {
  font-size: var(--text-sm);
  color: rgba(247,244,238,0.55);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 99px;
  padding: 0.25rem 0.75rem;
}

/* ─── SOFTWARE ─── */
.software-section { background: var(--surface); }

.section-intro {
  font-size: var(--text-lg);
  color: var(--ink-2);
  line-height: 1.65;
  max-width: 60ch;
  margin-top: calc(-1 * var(--s2));
  margin-bottom: var(--s4);
}
.section-intro strong { color: var(--ink); font-weight: 600; }

.software-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--s4);
}

.sw-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s6);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.sw-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--border);
  transition: background var(--transition);
}
.sw-card:hover {
  border-color: var(--glow);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.sw-card:hover::before { background: var(--glow); }

.sw-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--s4);
}
.sw-icon {
  font-size: 1.75rem;
  color: var(--glow);
  line-height: 1;
  display: flex;
}
.sw-arrow {
  font-size: 1.25rem;
  color: var(--ink-3);
  display: flex;
  transition: color var(--transition), transform var(--transition);
}
.sw-card:hover .sw-arrow {
  color: var(--glow);
  transform: translate(3px, -3px);
}
.sw-domain {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--glow);
  margin-bottom: var(--s1);
}
.sw-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--s2);
  line-height: 1.2;
}
.sw-desc {
  font-size: var(--text-sm);
  color: var(--ink-3);
  line-height: 1.7;
  flex: 1;
}

/* ─── BOOKS ─── */
.books-section {
  background: var(--dark);
  color: var(--paper);
}
.books-section .section-label { color: var(--glow); }
.books-section .section-title { color: var(--paper); margin-bottom: 0; }
.books-section .section-title .accent { color: var(--glow); }

.books-hd {
  margin-bottom: var(--s6);
}
.books-lead {
  font-size: var(--text-lg);
  color: rgba(247,244,238,0.55);
  max-width: 52ch;
  line-height: 1.65;
  margin-top: var(--s2);
}
.books-lead strong { color: rgba(247,244,238,0.9); font-weight: 600; }

/* List of series */
.blib-list {
  display: flex;
  flex-direction: column;
}

.blib-sep {
  height: 1px;
  background: rgba(247,244,238,0.07);
  margin: var(--s6) 0;
}

/* Series header */
.blib-series-hd {
  display: flex;
  align-items: center;
  gap: var(--s3);
  margin-bottom: var(--s4);
}

.blib-ico {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(232,98,8,0.12);
  border: 1px solid rgba(232,98,8,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--glow);
  font-size: 1.15rem;
  flex-shrink: 0;
}

.blib-series-name {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.15;
}

.blib-series-pub {
  font-size: var(--text-xs);
  color: rgba(247,244,238,0.38);
  letter-spacing: 0.04em;
  margin-top: 0.2rem;
}

/* Book row */
.blib-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

/* Individual book */
.blib-book {
  flex: 0 0 155px;
  cursor: default;
}

.blib-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 5 / 7;
  border-radius: 3px 10px 10px 3px;
  overflow: hidden;
  background: var(--dark-2);
  box-shadow:
    5px 8px 24px rgba(0,0,0,0.55),
    inset -4px 0 10px rgba(0,0,0,0.25);
  transition: transform 0.32s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.32s ease;
  will-change: transform;
}
.blib-book:hover .blib-cover {
  transform: translateY(-12px) rotate(-2deg) scale(1.04);
  box-shadow:
    14px 28px 56px rgba(0,0,0,0.65),
    0 0 0 1px rgba(232,98,8,0.2),
    inset -4px 0 10px rgba(0,0,0,0.25);
}

.blib-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

.blib-fb {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #1C1A14 0%, #2A2416 100%);
}
.blib-fb i {
  font-size: 2.5rem;
  color: var(--glow);
  opacity: 0.4;
}

.blib-name {
  margin-top: var(--s2);
  font-size: 0.73rem;
  font-weight: 600;
  color: rgba(247,244,238,0.55);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.blib-book:hover .blib-name { color: rgba(247,244,238,0.85); }

@media (max-width: 860px) {
  .blib-book { flex: 0 0 130px; }
}
@media (max-width: 600px) {
  .blib-book { flex: 0 0 calc(50% - 1rem); }
  .blib-row  { gap: 1.25rem; }
}

/* ─── BLOG ─── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--s4);
}
.blog-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.blog-card:hover {
  border-color: var(--glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.blog-card-img {
  aspect-ratio: 16/9;
  background: var(--surface);
  overflow: hidden;
}
.blog-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.blog-card:hover .blog-card-img img { transform: scale(1.05); }
.blog-card-body {
  padding: var(--s4);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.blog-card-date {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--glow);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--s1);
}
.blog-card-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: var(--s2);
}
.blog-card-text {
  font-size: var(--text-sm);
  color: var(--ink-2);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--s3);
}
.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}
.blog-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--glow-pale);
  color: var(--glow-dark);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
}

/* ─── CONTACT ─── */
.contact-section { position: relative; }
.contact-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glow), transparent);
}
.contact-section .section-label { color: var(--glow); }
.contact-section .section-label::before { background: var(--glow); }
.contact-section .section-title { color: var(--paper); }
.contact-section .section-title .accent { color: var(--glow); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s8);
  align-items: start;
}
.contact-intro {
  font-size: var(--text-lg);
  color: rgba(247,244,238,0.65);
  line-height: 1.65;
  max-width: 48ch;
  margin-bottom: var(--s4);
}
.contact-items {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  margin-bottom: var(--s4);
}
.contact-item {
  display: flex;
  align-items: center;
  gap: var(--s3);
  color: var(--paper);
  transition: color var(--transition);
}
.contact-item:hover { color: var(--glow); }
.contact-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(247,244,238,0.06);
  border: 1px solid rgba(247,244,238,0.1);
  border-radius: var(--radius);
  flex-shrink: 0;
  transition: var(--transition);
}
.contact-item:hover .contact-icon {
  background: rgba(232,98,8,0.2);
  border-color: var(--glow);
  color: var(--glow);
}
.contact-label {
  font-size: var(--text-xs);
  color: var(--ink-3);
  margin-bottom: 0.1rem;
}
.contact-value { font-size: var(--text-base); font-weight: 500; }
.social-links { display: flex; gap: var(--s2); }
.social-link {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(247,244,238,0.06);
  border: 1px solid rgba(247,244,238,0.1);
  border-radius: var(--radius);
  color: rgba(247,244,238,0.5);
  transition: var(--transition);
}
.social-link:hover {
  background: var(--glow);
  border-color: var(--glow);
  color: var(--white);
  transform: translateY(-2px);
}
.cv-card {
  background: rgba(247,244,238,0.04);
  border: 1px solid rgba(247,244,238,0.1);
  border-radius: var(--radius-lg);
  padding: var(--s8) var(--s6);
  text-align: center;
  min-width: 260px;
}
.cv-icon {
  font-size: 2.5rem;
  color: var(--glow);
  margin-bottom: var(--s3);
  display: flex;
  justify-content: center;
}
.cv-card h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--paper);
  margin-bottom: var(--s1);
}
.cv-card p {
  font-size: var(--text-sm);
  color: rgba(247,244,238,0.5);
  margin-bottom: var(--s4);
}

/* ─── FOOTER ─── */
.footer {
  background: var(--dark);
  padding: var(--s8) 0;
  border-top: 1px solid rgba(247,244,238,0.06);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s4);
  flex-wrap: wrap;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--paper);
}
.footer-logo .dot { color: var(--glow); }
.footer-copy {
  font-size: var(--text-xs);
  color: rgba(247,244,238,0.35);
  letter-spacing: 0.03em;
}
.footer-version { color: var(--glow); font-weight: 700; }
.footer-links { display: flex; gap: var(--s4); }
.footer-links a {
  font-size: var(--text-xs);
  color: rgba(247,244,238,0.35);
  font-weight: 500;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--glow); }

/* ─── COOKIE NOTICE ─── */
.cookie-notice {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  background: var(--dark);
  color: var(--paper);
  border: 1px solid rgba(247,244,238,0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: var(--s3) var(--s4);
  max-width: min(700px, calc(100vw - 2rem));
  width: 100%;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.cookie-notice.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(12px);
  pointer-events: none;
}
.cookie-notice-text {
  font-size: var(--text-sm);
  color: rgba(247,244,238,0.75);
  line-height: 1.5;
  flex: 1;
  margin: 0;
}
.cookie-notice-link {
  color: var(--glow);
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}
.cookie-notice-close {
  flex-shrink: 0;
  background: var(--glow);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  padding: 0.4rem 1rem;
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
}
.cookie-notice-close:hover { background: var(--glow-dark); }

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── RESPONSIVE ─── */
@media (max-width: 960px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--s8); }
  .about-numbers { position: static; }
  .ai-grid { grid-template-columns: 1fr; }
  .fosforo-grid { grid-template-columns: 1fr; gap: var(--s8); }
  .fosforo-stats { position: static; }
  .brown-services { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: var(--s8); }
  .cv-card { min-width: 0; }
  .timeline-item { grid-template-columns: 80px 1px 1fr; gap: 0 var(--s4); }
}

@media (max-width: 960px) {
  .nav-links li a { white-space: nowrap; }
}

@media (max-width: 900px) {
  :root { --s16: 5rem; --s12: 3.5rem; }

  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    top: 0;
    padding-top: 5rem;
    padding-bottom: var(--s8);
    background: var(--paper);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: var(--s4);
    z-index: 99;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; display: flex; justify-content: center; }
  .nav-links li a { font-size: var(--text-xl); padding: 0.5rem 0; }
  .nav-toggle { display: flex; position: relative; z-index: 101; }
  .nav-logo { position: relative; z-index: 101; }

  /* Lang selector inside mobile menu */
  .nav-links .lang-selector { position: relative; }
  .nav-links .lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    min-width: 180px;
  }
  .nav-links .lang-btn {
    font-size: var(--text-sm);
    padding: 0.6rem 1.1rem;
  }
  .nav-links .nav-cta { padding: 0.75rem 1.5rem; font-size: var(--text-base); }

  .hero { padding-top: 5.5rem; padding-bottom: var(--s8); }
  .hero-floaters { display: none; }
  .hero-bottom { flex-direction: column; align-items: flex-start; }
  .hero-name-first,
  .hero-name-last { font-size: clamp(3.75rem, 18vw, 5.5rem); }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: var(--s2);
  }
  .timeline-spine { display: none; }
  .timeline-year { text-align: left; }

  .ai-card { padding: var(--s4); }
  .ai-section .section-title { margin-bottom: var(--s6); }

  .books-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .about-numbers { grid-template-columns: 1fr 1fr; }
  .books-grid { grid-template-columns: 1fr 1fr; gap: var(--s2); }
  .hero-name-first,
  .hero-name-last { font-size: clamp(3.25rem, 17vw, 4.75rem); }
  .section-title { font-size: clamp(1.75rem, 7vw, 2.25rem); }
  .cookie-notice {
    flex-wrap: wrap;
    bottom: 0.75rem;
    padding: var(--s2) var(--s3);
    gap: var(--s2);
  }
  .cookie-notice-text { font-size: var(--text-xs); }
}