/* css/components.css */

/* =========================================
   LAYOUT CONTAINERS & GRIDS
   ========================================= */

main section:not(#hero-case):not(#case-stats):not(.case-nav-section):not(#hero-progetti) {
  padding: var(--space-96) 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-cta {
  margin-top: var(--space-48);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-32);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-32);
}

/* =========================================
   UTILITIES (Backgrounds, Spacing)
   ========================================= */
.bg-base { background-color: var(--bg-base); }
.bg-surface { background-color: var(--bg-surface); }
.bg-inverse { background-color: var(--bg-inverse); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-24 { margin-bottom: var(--space-24); }
.mb-32 { margin-bottom: var(--space-32); }
.mb-48 { margin-bottom: var(--space-48); }
.mb-64 { margin-bottom: var(--space-64); }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-16 { margin-top: var(--space-16); }
.mt-24 { margin-top: var(--space-24); }
.mt-32 { margin-top: var(--space-32); }
.mt-48 { margin-top: var(--space-48); }
.mt-64 { margin-top: var(--space-64); }

.pb-4 { padding-bottom: var(--space-4); }
.pb-8 { padding-bottom: var(--space-8); }
.pb-16 { padding-bottom: var(--space-16); }
.pb-24 { padding-bottom: var(--space-24); }
.pb-32 { padding-bottom: var(--space-32); }
.pb-48 { padding-bottom: var(--space-48); }
.pb-64 { padding-bottom: var(--space-64); }

.pt-4 { padding-top: var(--space-4); }
.pt-8 { padding-top: var(--space-8); }
.pt-16 { padding-top: var(--space-16); }
.pt-24 { padding-top: var(--space-24); }
.pt-32 { padding-top: var(--space-32); }
.pt-48 { padding-top: var(--space-48); }
.pt-64 { padding-top: var(--space-64); }

.gap-4 { gap: var(--space-4); }
.gap-8 { gap: var(--space-8); }
.gap-16 { gap: var(--space-16); }
.gap-24 { gap: var(--space-24); }
.gap-32 { gap: var(--space-32); }
.gap-48 { gap: var(--space-48); }
.gap-64 { gap: var(--space-64); }

/* =========================================
   BUTTONS & LINKS
   ========================================= */

.btn-primary,
.btn-secondary,
.btn-accent,
.btn-accent-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-32);
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  border-radius: 0; /* Sharp edges */
}

.btn-primary {
  background-color: var(--color-black);
  color: var(--color-warm-white);
}

.btn-primary:hover {
  background-color: var(--color-burnt-orange);
  color: var(--color-warm-white);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-black);
  border: var(--border-width-base) solid var(--color-black);
}

.btn-secondary:hover {
  background-color: var(--color-black);
  color: var(--color-warm-white);
}

.btn-accent {
  background-color: var(--color-burnt-orange);
  color: var(--color-warm-white);
  padding: var(--space-12) var(--space-24);
}

.btn-accent:hover {
  background-color: var(--color-black);
}

.btn-accent-large {
  background-color: var(--color-black);
  color: var(--color-warm-white);
  padding: var(--space-24) var(--space-64);
  font-size: 1.25rem;
}

.btn-accent-large:hover {
  background-color: var(--color-warm-white);
  color: var(--color-black);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-32);
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  background-color: transparent;
  color: var(--text-primary);
  border: var(--border-width-base) solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.btn-ghost:hover {
  background-color: var(--text-primary);
  color: var(--text-inverse);
  border-color: var(--text-primary);
}

.link-scopri {
  font-weight: var(--weight-heavy);
  font-family: var(--font-heading);
  color: var(--color-burnt-orange);
  display: inline-flex;
  align-items: center;
  margin-top: var(--space-16);
  font-size: 1.125rem;
}

.link-scopri:hover {
  color: var(--color-black);
}

/* =========================================
   CARDS
   ========================================= */

/* Generic Card Styling */
.card {
  background-color: var(--bg-surface);
  border: var(--border-width-base) solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--space-32);
}

/* Icons */
.icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-24);
  stroke-width: 1.5;
  color: var(--color-burnt-orange);
}

/* Tags */
.project-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-burnt-orange);
  margin-bottom: var(--space-8);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: 0.75rem;
  text-transform: uppercase;
  padding: var(--space-4) var(--space-8);
  border: var(--border-width-base) solid var(--border-subtle);
  border-radius: var(--radius-component);
  color: var(--text-muted);
}

.badge {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: 0.75rem;
  background-color: var(--text-accent);
  color: var(--bg-base);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-component);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* =========================================
   NEW DS COMPONENTS (12 Elements Expansion)
   ========================================= */

/* 04. Pricing */
.pricing-card {
  background-color: var(--bg-surface);
  border: var(--border-width-base) solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--space-32);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
}
.pricing-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-4px);
}
.pricing-card.is-popular {
  border-top: 4px solid var(--text-accent);
}
.pricing-price {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: var(--weight-heavy);
  margin-bottom: var(--space-8);
}
.pricing-features {
  list-style: none;
  margin: var(--space-24) 0;
  flex-grow: 1;
}
.pricing-features li {
  padding: var(--space-8) 0;
  border-bottom: var(--border-width-thin) solid var(--border-subtle);
}

/* 05. Metodo */
.method-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-32);
  border-left: 2px solid var(--text-primary);
  padding-left: var(--space-24);
  margin-left: var(--space-12);
}
.method-step {
  position: relative;
}
.method-step::before {
  content: '';
  position: absolute;
  left: calc(var(--space-24) * -1 - 9px);
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--text-accent);
  border: 4px solid var(--bg-base);
}

/* 06. Target */
.target-card {
  background-color: var(--text-primary);
  color: var(--text-inverse);
  padding: var(--space-32);
  border-radius: var(--radius-card);
}
.target-card .badge {
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

/* 07. Obiettivo */
.objective-banner {
  background-color: var(--text-accent);
  color: var(--text-inverse);
  padding: var(--space-48) var(--space-32);
  border-radius: var(--radius-card);
  text-align: center;
}
.objective-banner .display-lg {
  color: var(--text-inverse);
}

/* 08. Servizi */
.service-card {
  padding: var(--space-32);
  background-color: var(--bg-surface);
  border: var(--border-width-base) solid var(--border-subtle);
  border-radius: var(--radius-card);
  transition: all var(--transition-base);
}
.service-card:hover {
  background-color: var(--text-primary);
  color: var(--text-inverse);
}
.service-card:hover .text-muted {
  color: var(--color-border);
}

/* 09. Numeri */
.metric-card {
  padding: var(--space-24);
  border-top: 2px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
}
.metric-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: var(--weight-heavy);
  color: var(--text-accent);
  line-height: 1;
  margin-bottom: var(--space-8);
}
.metric-label {
  font-size: 1rem;
  color: var(--text-muted);
}

/* 10. Lavori */
.project-card {
  position: relative;
  overflow: hidden;
  border-top: 2px solid var(--text-primary);
  padding: var(--space-24) var(--space-16);
  transition: all var(--transition-base);
}
.project-card:hover {
  background-color: var(--text-primary);
  color: var(--text-inverse);
  border-top-color: var(--text-accent);
}
.project-card:hover .text-muted { color: var(--color-border); }

/* 11. Team */
.name-card {
  border-top: 2px solid var(--text-primary);
  padding-top: var(--space-16);
  padding-bottom: var(--space-24);
}
.name-card h4 {
  font-size: 2rem;
  font-family: var(--font-heading);
  margin-bottom: var(--space-8);
}
.name-card span {
  color: var(--text-accent);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
}

/* 12. Clienti */
.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-32);
  align-items: center;
  justify-items: center;
}
.client-logo {
  opacity: 0.5;
  transition: opacity var(--transition-base);
  max-width: 120px;
  height: auto;
  filter: grayscale(100%);
}
.client-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}
.testimonial-card {
  padding: var(--space-32);
  background-color: var(--bg-surface);
  border-left: 4px solid var(--text-accent);
  font-style: italic;
}

/* =========================================
   FOOTER
   ========================================= */

footer {
  background-color: var(--color-black);
  color: var(--color-warm-white);
  padding: var(--space-64) 2rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--space-32);
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: var(--weight-heavy);
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-8);
}

.footer-brand .tagline {
  color: var(--color-burnt-orange);
}

.footer-links {
  display: flex;
  gap: var(--space-32);
  justify-content: center;
}

.footer-links a {
  color: var(--color-warm-white);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-burnt-orange);
}

.footer-info {
  text-align: right;
  opacity: 0.6;
  font-size: 0.875rem;
}

@media (max-width: 992px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: left;
    gap: var(--space-48);
  }
  .footer-links {
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--space-16);
  }
  .footer-info {
    text-align: left;
  }
}

/* =========================================
   NAVIGATION (Desktop vs Mobile Overlay)
   ========================================= */

#nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  background: var(--bg-base);
  border-bottom: 0.5px solid var(--border-subtle);
}

.nav-links {
  display: flex;
  gap: var(--space-32);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: 1.125rem;
  text-decoration: none;
  color: var(--color-black);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-burnt-orange);
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: var(--weight-heavy);
  font-size: 2rem;
  text-decoration: none;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 16px;
}

.nav-logo-dot {
  display: inline-block;
  position: relative;
  width: 10px;
  height: 10px;
  background-color: var(--color-burnt-orange);
  border-radius: 50%;
}

.nav-logo-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--color-burnt-orange);
  border-radius: 50%;
  opacity: 0.4;
}

.mobile-menu-trigger {
  display: none;
  background: transparent;
  border: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: var(--space-8);
  z-index: 200;
}

.mobile-menu-trigger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  transition: all var(--transition-base);
}

/* Mobile Overlay active states managed by JS */
body.menu-open {
  overflow: hidden;
}

@media (max-width: 992px) {
  .desktop-menu {
    display: none !important;
  }
  .mobile-menu-trigger {
    display: flex;
  }
  
  /* Mobile Menu Overlay Styles */
  #nav.overlay-active {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-warm-white);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
  }
  #nav.overlay-active .nav-links {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--space-32);
  }
  #nav.overlay-active .nav-logo {
    position: absolute;
    top: 1.5rem;
    left: 2rem;
  }
  #nav.overlay-active .mobile-menu-trigger {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
  }
  #nav.overlay-active .mobile-menu-trigger span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  #nav.overlay-active .mobile-menu-trigger span:nth-child(2) {
    opacity: 0;
  }
  #nav.overlay-active .mobile-menu-trigger span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* =========================================
   FOOTER
   ========================================= */

footer {
  background-color: var(--color-black);
  color: var(--color-warm-white);
  padding: var(--space-64) 2rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--space-32);
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: var(--weight-heavy);
  font-size: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-bottom: var(--space-8);
  color: var(--color-warm-white);
  text-decoration: none;
}

.footer-brand .tagline {
  color: var(--color-burnt-orange);
}

.footer-links-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.footer-links {
  display: flex;
  gap: var(--space-32);
  justify-content: center;
}

.footer-sublinks {
  align-items: center;
  gap: var(--space-24);
}

.footer-label {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-links a {
  color: var(--color-warm-white);
  opacity: 0.8;
  text-decoration: none;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-burnt-orange);
}

.footer-info {
  text-align: right;
  opacity: 0.6;
  font-size: 0.875rem;
}

@media (max-width: 992px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: left;
    gap: var(--space-48);
  }
  .footer-links {
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--space-16);
  }
  .footer-info {
    text-align: left;
  }
}

/* =========================================
   INTERACTIVE COMPONENTS (Addon)
   ========================================= */

/* ── Cursor ── */
.cursor-dot, #cursor-dot {
  position: fixed;
  width: var(--cursor-size);
  height: var(--cursor-size);
  background: var(--text-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: 
    width var(--anim-speed-fast) var(--anim-ease-out),
    height var(--anim-speed-fast) var(--anim-ease-out),
    opacity var(--anim-speed-fast) var(--anim-ease-out);
  will-change: transform;
}

.cursor-ring, #cursor-ring {
  position: fixed;
  width: var(--cursor-size-hover);
  height: var(--cursor-size-hover);
  border: 1.5px solid var(--text-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  opacity: 0.4;
  transition: 
    width var(--anim-speed-base) var(--anim-ease-spring),
    height var(--anim-speed-base) var(--anim-ease-spring),
    opacity var(--anim-speed-fast) var(--anim-ease-out),
    background var(--anim-speed-fast) var(--anim-ease-out);
  will-change: transform;
}

/* ── Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: 
    opacity var(--anim-speed-slow) var(--anim-ease-out),
    transform var(--anim-speed-slow) var(--anim-ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-reveal="left"] {
  transform: translateX(-40px);
}
.reveal[data-reveal="right"] {
  transform: translateX(40px);
}
.reveal[data-reveal="scale"] {
  transform: scale(0.95);
}
.reveal[data-reveal="left"].visible,
.reveal[data-reveal="right"].visible,
.reveal[data-reveal="scale"].visible {
  transform: translateX(0) scale(1);
}

/* ── Counter ── */
.counter {
  /* Counter value is updated via JS */
  display: inline-block;
}

/* ── Card hover reveal ── */
.card-project {
  position: relative;
  overflow: hidden;
  background: var(--bg-inverse);
  color: var(--text-inverse);
  cursor: none;
}

.card-project > *:not(.card-project__reveal) {
  position: relative;
  z-index: 1;
}

.card-project__reveal {
  position: absolute;
  bottom: -100%;
  left: 0;
  width: 100%;
  padding: 0 var(--space-16) var(--space-16) var(--space-16);
  font-family: var(--font-heading);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: var(--weight-heavy);
  color: var(--text-accent);
  opacity: 0.2; /* Watermark effect */
  line-height: 0.9;
  letter-spacing: -2px;
  transition: 
    bottom var(--anim-speed-base) var(--anim-ease-out);
  pointer-events: none;
  white-space: nowrap;
  z-index: 0;
}

.card-project:hover .card-project__reveal {
  bottom: 0;
}

/* Fix: tag e testo leggibili su sfondo scuro card-project */
.card-project .tag {
  color: var(--color-warm-white, #F7F5F0);
  border-color: rgba(247, 245, 240, 0.3);
}

.card-project .body,
.card-project p {
  color: rgba(247, 245, 240, 0.7);
}

.card-project h2,
.card-project h3 {
  color: var(--color-warm-white, #F7F5F0);
}

/* ── Hero Canvas ── */
.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 1;
}

#hero {
  position: relative;
  overflow: hidden;
}

#hero .hero-content {
  position: relative;
  z-index: 1;
}

/* ── Circle Message ── */
.circle-message {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: 
    opacity var(--circle-message-speed) 
    var(--anim-ease-out);
  text-align: center;
  z-index: 2;
}

.circle-message.visible {
  opacity: 1;
  pointer-events: auto;
}

.circle-message__line1 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(16px, 2vw, 22px);
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.circle-message__line2 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(14px, 1.6vw, 18px);
  color: var(--text-primary);
  letter-spacing: -0.3px;
  line-height: 1.1;
}

.circle-message__reset {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
  opacity: 0.7;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: var(--space-8);
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  transition: 
    opacity var(--anim-speed-fast) 
    var(--anim-ease-out);
}

.circle-message__reset:hover {
  opacity: 1;
}

/* ── Post Card ── */
.post-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: var(--space-24);
  border: 0.5px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-surface);
  transition: 
    border-color var(--anim-speed-fast) 
    var(--anim-ease-out),
    transform var(--anim-speed-fast) 
    var(--anim-ease-out);
  text-decoration: none;
}

.post-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.post-card__type {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: var(--weight-medium);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
}

.post-card__type--article {
  background: var(--post-type-article-bg);
  color: var(--post-type-article-color);
}

.post-card__type--nota {
  background: var(--post-type-note-bg);
  color: var(--post-type-note-color);
  border: 0.5px solid var(--border-subtle);
}

.post-card__category {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-card__date {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--text-muted);
  margin-left: auto;
}

.post-card__title {
  font-family: var(--font-heading);
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: var(--weight-heavy);
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: var(--space-12);
}

.post-card__excerpt {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: var(--weight-light);
  color: var(--text-muted);
  line-height: 1.6;
}

.post-card__footer {
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  border-top: 0.5px solid var(--border-subtle);
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--text-accent);
  font-weight: var(--weight-medium);
}

/* ── Category Filter ── */
.category-filter {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  margin-bottom: var(--space-48);
}

.category-filter__btn {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: var(--weight-medium);
  padding: var(--space-8) var(--space-16);
  border-radius: 2px;
  border: 0.5px solid var(--border-subtle);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: 
    all var(--anim-speed-fast) 
    var(--anim-ease-out);
}

.category-filter__btn:hover,
.category-filter__btn.active {
  background: var(--text-primary);
  color: var(--bg-base);
  border-color: var(--text-primary);
}

/* ── Article Reading View ── */
.article-body {
  max-width: var(--reading-width);
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: var(--weight-light);
  line-height: var(--reading-line-height);
  color: var(--text-primary);
}

.article-body h2 {
  font-family: var(--font-heading);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: var(--weight-heavy);
  color: var(--text-primary);
  margin: var(--space-48) 0 var(--space-16);
  letter-spacing: -0.5px;
}

.article-body h3 {
  font-family: var(--font-heading);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: var(--weight-heavy);
  color: var(--text-primary);
  margin: var(--space-32) 0 var(--space-12);
}

.article-body p {
  margin-bottom: var(--space-24);
}

.article-body strong {
  font-weight: var(--weight-medium);
  color: var(--text-primary);
}

.article-body blockquote {
  border-left: 3px solid var(--text-accent);
  padding-left: var(--space-24);
  margin: var(--space-32) 0;
  font-family: var(--font-heading);
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: var(--weight-heavy);
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.3;
}

/* ── LinkedIn CTA ── */
.linkedin-cta {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-24);
  border: 0.5px solid var(--border-subtle);
  border-radius: var(--radius-card);
  margin-top: var(--space-48);
  text-decoration: none;
  transition: 
    border-color var(--anim-speed-fast) 
    var(--anim-ease-out);
}

.linkedin-cta:hover {
  border-color: var(--text-primary);
}

.linkedin-cta__text {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: var(--weight-light);
  color: var(--text-muted);
}

.linkedin-cta__text strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: var(--weight-heavy);
  color: var(--text-primary);
  margin-bottom: 4px;
}

/* ── Persona Card ── */
.persona-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-32);
  background: var(--persona-card-bg);
  border: var(--persona-card-border);
  border-radius: var(--radius-card);
  text-decoration: none;
  transition:
    border var(--anim-speed-fast) 
      var(--anim-ease-out),
    background var(--anim-speed-fast) 
      var(--anim-ease-out),
    transform var(--anim-speed-fast) 
      var(--anim-ease-out);
  cursor: none;
}

.persona-card:hover {
  border: var(--persona-card-border-hover);
  background: var(--persona-card-bg-hover);
  transform: translateY(-3px);
}

.persona-section:has(
  .persona-card:hover) 
  .persona-card:not(:hover) {
  opacity: 0.4;
  transform: translateY(0);
}

.persona-card__label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-accent);
  margin-bottom: var(--space-24);
}

.persona-card__headline {
  font-family: var(--font-heading);
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 800;
  color: #F7F5F0;
  line-height: 1.1;
  letter-spacing: -0.8px;
  margin-bottom: var(--space-16);
}

.persona-card__body {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 300;
  color: #888888;
  line-height: 1.6;
  margin-bottom: var(--space-32);
}

.persona-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-accent);
  transition:
    gap var(--anim-speed-fast) 
    var(--anim-ease-out);
}

.persona-card:hover .persona-card__cta {
  gap: var(--space-16);
}

.persona-card__divider {
  width: 0.5px;
  background: #333333;
  align-self: stretch;
}

/* ── Scenario Card ── */
.scenario-card {
  padding: var(--space-32);
  border: 0.5px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-surface);
  position: relative;
}

.scenario-card__number {
  font-family: var(--font-heading);
  font-size: var(--scenario-number-size);
  font-weight: 800;
  color: var(--text-accent);
  opacity: 0.12;
  position: absolute;
  top: var(--space-16);
  right: var(--space-24);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.scenario-card__label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-accent);
  margin-bottom: var(--space-12);
}

.scenario-card__title {
  font-family: var(--font-heading);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: var(--space-12);
}

.scenario-card__body {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Guarantee Row ── */
.guarantee-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-24);
  padding: var(--space-24) 0;
  border-bottom: 0.5px solid 
    var(--border-subtle);
}

.guarantee-row:last-child {
  border-bottom: none;
}

.guarantee-row__icon {
  width: var(--guarantee-icon-size);
  height: var(--guarantee-icon-size);
  flex-shrink: 0;
  color: var(--text-accent);
}

.guarantee-row__title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-8);
  letter-spacing: -0.3px;
}

.guarantee-row__body {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Objection Block ── */
.objection-block {
  padding: var(--space-32);
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--text-accent);
}

.objection-block__question {
  font-family: var(--font-heading);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 800;
  color: var(--text-muted);
  margin-bottom: var(--space-12);
  letter-spacing: -0.3px;
  font-style: italic;
}

.objection-block__answer {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.65;
}

/* ── ROI Card ── */
.roi-card {
  padding: var(--space-32);
  background: var(--bg-surface);
  border: 0.5px solid var(--border-subtle);
  border-radius: var(--radius-card);
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: var(--space-12);
}

.roi-card__before {
  display: flex;
  align-items: baseline;
  gap: var(--space-8);
}

.roi-card__number {
  font-family: var(--font-heading);
  font-size: var(--roi-number-size);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -2px;
  color: var(--text-muted);
  text-decoration: line-through;
  opacity: 0.4;
}

.roi-card__number--after {
  color: var(--roi-number-color);
  text-decoration: none;
  opacity: 1;
}

.roi-card__arrow {
  font-family: var(--font-heading);
  font-size: 24px;
  color: var(--text-accent);
  font-weight: 800;
}

.roi-card__label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.roi-card__description {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Process Step ── */
.process-step {
  display: grid;
  grid-template-columns: 
    48px 1fr;
  gap: var(--space-24);
  padding: var(--space-24) 0;
  border-bottom: var(--process-step-line);
  position: relative;
}

.process-step:last-child {
  border-bottom: none;
}

.process-step__number {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 800;
  color: var(--text-accent);
  padding-top: 4px;
}

.process-step__title {
  font-family: var(--font-heading);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-8);
  letter-spacing: -0.3px;
}

.process-step__body {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
}

.process-step__time {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: var(--space-8);
}

/* ── Anti-hype Block ── */
.antihype-block {
  padding: var(--space-48);
  background: #0D0D0D;
  border-radius: var(--radius-card);
  text-align: center;
}

.antihype-block__title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 800;
  color: #F7F5F0;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: var(--space-16);
}

.antihype-block__title span {
  color: var(--text-accent);
}

.antihype-block__body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 300;
  color: #888;
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto var(--space-32);
}

/* ── Case Study Stat ── */
.case-stat {
  padding: var(--space-32);
  border: 0.5px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-surface);
}

.case-stat__number {
  font-family: var(--font-heading);
  font-size: var(--case-stat-number);
  font-weight: var(--weight-heavy);
  color: var(--text-accent);
  line-height: 1;
  letter-spacing: -2px;
  margin-bottom: var(--space-8);
}

.case-stat__label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: var(--weight-light);
  color: var(--text-muted);
  line-height: 1.4;
}

/* ── Stack Tag ── */
.stack-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--case-stack-tag-bg);
  color: var(--case-stack-tag-color);
  border: 0.5px solid #2A2A2A;
}

/* ── Case Section ── */
.case-section {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-64) 0;
  border-bottom: 0.5px solid var(--border-subtle);
}

.case-section:last-of-type {
  border-bottom: none;
}

.case-section__label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-accent);
  margin-bottom: var(--space-16);
}

.case-section__title {
  font-family: var(--font-heading);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: var(--weight-heavy);
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.15;
  margin-bottom: var(--space-24);
}

.case-section__body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: var(--weight-light);
  color: var(--text-primary);
  line-height: 1.75;
}

.case-section__body p {
  margin-bottom: var(--space-16);
}

.case-section__body p:last-child {
  margin-bottom: 0;
}

/* ── Breadcrumb ── */
.breadcrumb {
  margin-bottom: var(--space-48);
}

.breadcrumb ol {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
}

.breadcrumb a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  text-decoration: underline;
  color: var(--color-burnt-orange);
}

/* ── Author Bio ── */
.author-bio {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-24);
  padding: var(--spacing-32);
  border: 0.5px solid var(--border-color);
  border-radius: var(--border-radius-md);
  margin-top: var(--spacing-48);
  margin-bottom: var(--spacing-32);
  max-width: var(--reading-width);
  margin-left: auto;
  margin-right: auto;
}

.author-bio__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--text-primary);
  color: var(--bg-base);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  object-fit: cover;
}

.author-bio__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.author-bio__role {
  color: var(--text-accent);
  margin-bottom: var(--spacing-8);
}

.author-bio__text {
  color: var(--text-muted);
  margin-bottom: var(--spacing-8);
}

.author-bio__linkedin {
  color: var(--text-accent);
  text-decoration: none;
}