/**
 * Custom Styles for Andrea Zedda Portfolio
 * Modern, minimal, accessible, dark-mode friendly
 */

/* ===== ROOT VARIABLES ===== */
:root {
  /* Luxury-tech: dark base + gold primary + silver accents */
  --color-primary: #e5e7eb;
  --color-secondary: #d4af37;
  --color-accent: #c8d0da;
  --color-text: #e5e7eb;
  --color-text-light: #a7b0bb;
  --color-bg: #0b0f14;
  --color-bg-alt: #121925;
  --color-border: #273141;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --font-body: 'Raleway', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Courier New', monospace;
  --border-radius: 10px;
  --transition-speed: 0.2s;
  --shadow-sm: 0 10px 26px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 18px 44px rgba(0, 0, 0, 0.32);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    /* Slightly deeper for OS-level dark mode */
    --color-bg: #080b10;
    --color-bg-alt: #0f1622;
    --color-border: #223041;
  }
}

/* ===== ICON STYLING ===== */
.fa {
  margin-right: 0.5rem;
  color: var(--color-secondary);
  opacity: 0.9;
  min-width: 1.2em;
  text-align: center;
  transition: all var(--transition-speed) ease;
}

.fa:hover {
  opacity: 1;
  transform: scale(1.1);
}

h2 .fa, h3 .fa, h4 .fa {
  margin-right: 0.75rem;
  font-size: 0.95em;
}

h1 .fa {
  margin-right: 1rem;
  font-size: 0.9em;
}

.subtitle .fa {
  color: var(--color-accent);
  opacity: 0.85;
}

/* List items with icons */
li .fa, p .fa, span .fa {
  margin-right: 0.4rem;
  font-size: 0.9em;
}

/* Calendar and timeline icons */
.fa-calendar, .fa-clock-o {
  color: var(--color-accent);
}

/* Organization and location icons */
.fa-building-o, .fa-university, .fa-map-marker {
  color: var(--color-primary);
  opacity: 0.8;
}

/* Interactive icons */
.fa-link, .fa-external-link, .fa-envelope-o {
  color: var(--color-secondary);
  opacity: 0.7;
}

/* Status icons */
.fa-check-circle, .fa-check-square-o {
  color: #4ade80;
  opacity: 0.9;
}

/* ===== RESET & BASE ===== */
html {
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: none;
  background-attachment: fixed;
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(212, 175, 55, 0.01) 2px,
      rgba(212, 175, 55, 0.01) 4px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(200, 208, 218, 0.01) 2px,
      rgba(200, 208, 218, 0.01) 4px
    );
  pointer-events: none;
  z-index: 0;
  opacity: 0.06;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.75rem;
  background: var(--color-secondary);
  color: var(--color-bg);
  padding: 0.6rem 0.9rem;
  border-radius: var(--border-radius);
  z-index: 2000;
}

.skip-link:focus {
  left: 0.75rem;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 2.2vw + 1.2rem, 3rem); }
h2 { font-size: clamp(1.6rem, 1.2vw + 1.1rem, 2.25rem); }
h3 { font-size: clamp(1.25rem, 0.8vw + 1rem, 1.6rem); }
h4 { font-size: clamp(1.1rem, 0.5vw + 1rem, 1.3rem); }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
  transition: color var(--transition-speed);
}

a:hover {
  color: var(--color-accent);
}

:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

strong {
  font-weight: 600;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  min-height: auto;
  position: relative;
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(212, 175, 55, 0.2) 20%, 
    rgba(212, 175, 55, 0.2) 80%, 
    transparent
  );
}

.section:first-of-type::before {
  display: none;
}

.section-compact {
  padding: var(--spacing-md) 0;
}

/* Section headers with enhanced visibility */
.section h2,
.section h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.section .subtitle {
  display: inline-block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

/* Improve list readability */
ul, ol {
  margin-left: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

li {
  margin-bottom: 0.75rem;
  line-height: 1.8;
}

li:last-child {
  margin-bottom: 0;
}

/* Nested lists */
li ul, li ol {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

/* ===== DOSSIER UI ===== */
.contract-banner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  background: var(--color-bg-alt);
  box-shadow: none;
}

.contract-badge {
  align-self: start;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.35);
  background: rgba(212, 175, 55, 0.08);
  color: var(--color-secondary);
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
}

.contract-title {
  margin-bottom: 0.35rem;
}

.contract-text {
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.contract-subtext {
  margin-bottom: 0;
  color: var(--color-text-light);
}

.dossier-index {
  position: sticky;
  top: 74px;
  z-index: 900;
  padding: var(--spacing-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  background: var(--color-bg);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.dossier-index-title {
  margin: 0 0 var(--spacing-xs);
  font-size: 1rem;
  color: var(--color-text-light);
  letter-spacing: 0.12em;
}

.dossier-index-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.discovery-progress {
  margin: 0 0 var(--spacing-sm);
  padding: var(--spacing-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  background: var(--color-bg-alt);
}

.discovery-progress-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.discovery-progress-label {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.discovery-progress-text {
  color: var(--color-text-light);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.discovery-progress-bar {
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.18);
  overflow: hidden;
}

.discovery-progress-fill {
  height: 100%;
  width: 0%;
  background: rgba(212, 175, 55, 0.65);
  transition: width var(--transition-speed);
}

.discovery-progress-hint {
  margin: var(--spacing-xs) 0 0;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .discovery-progress-hint {
    display: none;
  }
}

/* Progressive disclosure blocks */
details.discovery-step {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  background: var(--color-bg-alt);
  padding: 0;
  overflow: hidden;
  transition: border-color var(--transition-speed);
}

details.discovery-step + details.discovery-step {
  margin-top: var(--spacing-md);
}

details.discovery-step[open] {
  box-shadow: none;
  border-color: rgba(255, 255, 255, 0.12);
}

summary.discovery-summary {
  list-style: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  user-select: none;
  background: var(--color-bg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

summary.discovery-summary::-webkit-details-marker {
  display: none;
}

summary.discovery-summary::after {
  content: '';
  width: 10px;
  height: 10px;
  flex: 0 0 10px;
  border-right: 2px solid rgba(255, 255, 255, 0.45);
  border-bottom: 2px solid rgba(255, 255, 255, 0.45);
  transform: rotate(-45deg);
  transition: transform var(--transition-speed);
  margin-left: auto;
}

details.discovery-step[open] > summary.discovery-summary::after {
  transform: rotate(45deg);
}

details.discovery-step:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

summary.discovery-summary:hover {
  background: rgba(18, 25, 37, 0.5);
}

summary.discovery-summary:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: -2px;
}

.discovery-title {
  font-weight: 700;
  color: var(--color-primary);
}

.discovery-badge {
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  background: rgba(212, 175, 55, 0.06);
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

details.discovery-step > *:not(summary) {
  padding: 0 var(--spacing-sm) var(--spacing-sm);
}

/* Reduce excessive spacing when existing section blocks already include margins */
details.discovery-step .text-center {
  margin-top: var(--spacing-xs);
}

/* Keep existing vertical rhythm when subsections are details */
details.dossier-subsection {
  margin-top: var(--spacing-lg);
}

.index-link {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.18);
  background: rgba(212, 175, 55, 0.04);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
}

.index-link:hover {
  border-color: rgba(212, 175, 55, 0.35);
  color: var(--color-secondary);
}

.dossier-subsection {
  margin-top: var(--spacing-lg);
}

.dossier-subtitle {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.contexts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.context-card {
  padding: var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
  background: rgba(18, 25, 37, 0.55);
}

.context-card h4 {
  margin-bottom: var(--spacing-xs);
}

/* Project technical spec (dossier card) */
.project-spec {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(18, 25, 37, 0.35);
}

.project-spec .spec-row {
  margin-bottom: 0.6rem;
}

.context-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.context-logo {
  height: 22px;
  width: auto;
  max-width: 120px;
  flex: 0 0 auto;
  object-fit: contain;
}

.project-title {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.project-logo {
  height: 30px;
  width: auto;
  max-width: 180px;
  flex: 0 0 auto;
  object-fit: contain;
}
.project-spec .spec-row:last-child {
  margin-bottom: 0;
}

.project-spec strong {
  color: var(--color-accent);
}

.project-spec ul {
  margin-top: 0.35rem;
  padding-left: 1.2rem;
}

@media (max-width: 900px) {
  .contract-banner {
    grid-template-columns: 1fr;
  }
  .dossier-index {
    top: 64px;
  }
  .contexts-grid {
    grid-template-columns: 1fr;
  }
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-lead {
  max-width: 860px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-text-light);
  text-align: center;
  font-size: 1.05rem;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: var(--spacing-xs);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary), transparent);
  border-radius: 2px;
}

.hero-grid h1 {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(212, 175, 55, 0.3));
  animation: slideUp 0.8s ease-out 0.2s backwards;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 500;
}

/* ===== HEADER/NAV ===== */
header {
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: saturate(1.8) blur(20px);
  -webkit-backdrop-filter: saturate(1.8) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

  /* ===== LANGUAGE SWITCH ===== */
  .lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: auto;
    margin-right: var(--spacing-md);
  padding: 0.35rem 0.65rem;
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.05);
  box-shadow: 0 2px 10px rgba(212, 175, 55, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.lang-switch:hover {
  border-color: rgba(212, 175, 55, 0.4);
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.15);
}

.lang-switch .lang-link {
  color: var(--color-text-light);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.lang-switch .lang-link::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 999px;
  opacity: 0;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(200, 208, 218, 0.1));
  transition: opacity 0.25s ease;
}

.lang-switch .lang-link:hover::after {
  opacity: 1;
}

.lang-switch .lang-link:hover,
.lang-switch .lang-link:focus-visible {
  color: var(--color-secondary);
  transform: translateY(-1px);
}

.lang-switch .lang-link.active {
  color: var(--color-bg);
  background: linear-gradient(135deg, var(--color-secondary), #c99d2e);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.lang-switch .lang-link.active::after {
  display: none;
}

.lang-switch .lang-sep {
  color: var(--color-secondary);
  opacity: 0.5;
  font-weight: 300;
  gap: var(--spacing-md);
  padding: 0.9rem 0;
}

#logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.navigation-menu {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
  flex-wrap: wrap;
}

.navigation-menu li a {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: background var(--transition-speed);
  text-decoration: none;
}

.navigation-menu li a:hover,
.navigation-menu li.active a {
  background: var(--color-bg-alt);
  color: var(--color-secondary);
}

/* ===== HERO SECTION ===== */
#hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: left;
  background: transparent;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.hero-content p {
  font-size: 1.3rem;
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 0 var(--spacing-md);
}

.hero-tagline {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text);
  max-width: 780px;
  margin: 0 0 var(--spacing-md);
}

.hero-bullets {
  list-style: none;
  padding-left: 0;
  margin: 0 0 var(--spacing-lg);
  max-width: 780px;
}

.hero-bullets li {
  position: relative;
  padding-left: 1.25rem;
  margin: 0 0 0.65rem;
  color: var(--color-text);
}

.hero-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--color-secondary);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.hero-pillars {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 var(--spacing-lg);
}

.hero-pillars-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.pillars-chip {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-speed);
  text-decoration: none;
}

.pillars-chip:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.hero-panel {
  background: var(--color-bg-alt);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: none;
  transition: border-color var(--transition-speed);
  animation: none;
}

.hero-panel:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

.hero-photo-wrap {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin: 0 0 var(--spacing-md);
}

.hero-photo {
  width: 144px;
  height: 144px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  object-fit: cover;
  display: block;
}

@media (max-width: 768px) {
  .hero-photo-wrap {
    justify-content: center;
  }

  .hero-photo {
    width: 112px;
    height: 112px;
  }
}

.hero-fact {
  padding: 0 0 var(--spacing-md);
  margin: 0 0 var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.hero-fact:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.hero-fact-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.35rem;
}

.hero-fact-value {
  display: block;
  font-size: 1.05rem;
  color: var(--color-text);
  font-weight: 600;
}

.hero-panel-note {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px dashed var(--color-border);
}

.hero-panel-note-label {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.hero-panel-note-value {
  display: block;
  color: var(--color-text-light);
}

/* ===== FOCUS NOW SECTION ===== */
#focus-now-content .focus-header h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

#focus-now-content .period {
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

#focus-now-content .description {
  margin-bottom: var(--spacing-md);
}

#focus-now-content .focus-activities ul {
  list-style-position: inside;
  margin-bottom: var(--spacing-md);
}

#focus-now-content .focus-activities li {
  padding: var(--spacing-xs) 0;
}

/* ===== CARDS GRID ===== */
.grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: all var(--transition-speed) ease;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary), transparent);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  opacity: 0;
  transition: opacity var(--transition-speed);
}

.card:hover {
  border-color: rgba(212, 175, 55, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.card:hover::before {
  opacity: 1;
}

/* Card titles with icons */
.card h3,
.card h4 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--spacing-sm);
}

.card h3 .fa,
.card h4 .fa {
  flex-shrink: 0;
}

/* ===== SERVICE CARDS ===== */
#services-grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.service-card {
  background: var(--color-bg-alt);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  text-align: center;
  box-shadow: none;
  transition: border-color var(--transition-speed);
}

.service-card:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

.service-icon {
  font-size: 3rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.service-card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.service-card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ===== PROJECT CARDS ===== */
#projects-grid,
#project-examples-grid {
  display: grid;
  gap: calc(var(--spacing-md) + 0.25rem);
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
}

.project-card {
  background: var(--color-bg-alt);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  padding-left: calc(var(--spacing-md) + 0.5rem);
  position: relative;
  overflow: hidden;
  box-shadow: none;
  transition: border-color var(--transition-speed);
}

.project-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-border);
  border-top-left-radius: var(--border-radius);
  border-bottom-left-radius: var(--border-radius);
}

.project-card[data-status="production"]::before {
  background: var(--color-secondary);
}

.project-card[data-status="prototype"]::before {
  background: var(--color-text-light);
}

.project-card[data-status="concept"]::before {
  background: var(--color-accent);
}

.project-card:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

.project-header h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.project-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-light);
  background: transparent;
  white-space: nowrap;
}

.status-badge.status-production {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: transparent;
  box-shadow: none;
}

.status-badge.status-prototype {
  border-color: var(--color-text-light);
  color: var(--color-text-light);
  background: transparent;
}

.status-badge.status-concept {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}

.project-tagline {
  color: var(--color-text-light);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.project-purpose {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.project-body strong {
  display: inline-block;
  margin-right: 0.35rem;
  color: var(--color-primary);
}

.project-builds,
.project-outputs {
  margin-top: var(--spacing-sm);
}

.project-contained {
  margin-top: var(--spacing-sm);
}

.project-contained ul {
  list-style-position: inside;
  margin: var(--spacing-xs) 0 0 0;
}

.project-contained li {
  padding: 0.15rem 0;
}

.contained-name {
  font-weight: 700;
  color: var(--color-primary);
}

.contained-name {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.contained-logo {
  height: 22px;
  width: auto;
  max-width: 140px;
  border-radius: 6px;
  border: 1px solid rgba(212, 175, 55, 0.18);
  background: rgba(212, 175, 55, 0.04);
  flex: 0 0 auto;
  object-fit: contain;
}

.contained-tagline {
  color: var(--color-text-light);
  font-weight: 600;
}

.project-builds ul {
  list-style-position: inside;
  margin: var(--spacing-xs) 0 var(--spacing-sm) 0;
}

.project-outputs {
  margin-bottom: var(--spacing-sm);
}

.project-outputs ul {
  list-style-position: inside;
  margin: var(--spacing-xs) 0 0 0;
}

.project-builds li,
.project-outputs li {
  padding: 0.15rem 0;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--spacing-sm);
}

.project-link {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-secondary);
  font-weight: 600;
  font-size: 0.9rem;
}

.project-link:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.project-link.placeholder {
  color: var(--color-text-light);
  border-color: var(--color-border);
  background: transparent;
}

.project-tags {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

/* ===== TAGS ===== */
.tag {
  display: inline-block;
  background: rgba(212, 175, 55, 0.05);
  color: var(--color-secondary);
  border: 1px solid rgba(212, 175, 55, 0.3);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  margin: 0.25rem;
  font-weight: 500;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.1);
}

.tag:hover {
  background: rgba(212, 175, 55, 0.15);
  border-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(212, 175, 55, 0.25);
}

.focus-keywords,
.project-tags,
#toolbox-tags {
  margin-top: var(--spacing-sm);
}

/* ===== TOOLBOX ===== */
#toolbox-tags {
  margin-bottom: var(--spacing-md);
}

#toolbox-capabilities ul {
  list-style-position: inside;
}

#toolbox-capabilities li {
  padding: var(--spacing-xs) 0;
}

/* ===== ABOUT / BACKGROUND ===== */
#background-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

#collaborators-content {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: var(--spacing-md);
}

.collaborators-group-title {
  grid-column: 1 / -1;
  margin: var(--spacing-md) 0 0 0;
  color: var(--color-primary);
}

.collaborators-lead {
  max-width: 860px;
  margin: 0 auto;
  color: var(--color-text-light);
  text-align: center;
}

.collaborator-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed), border-color var(--transition-speed);
}

.collaborator-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.collaborator-card-link:hover .collaborator-item,
.collaborator-card-link:focus-visible .collaborator-item {
  border-color: rgba(212, 175, 55, 0.45);
  transform: translateY(-2px);
}

.collaborator-top {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.collaborator-avatar {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-secondary), transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.collaborator-avatar span {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.collaborator-main {
  flex: 1;
  min-width: 0;
}

.collaborator-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.collaborator-period {
  color: var(--color-text-light);
  font-style: italic;
  white-space: nowrap;
}

.collaborator-role {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
}

.collaborator-context,
.collaborator-note {
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.collaborator-block-label {
  display: inline-block;
  margin-top: var(--spacing-xs);
  color: var(--color-secondary);
  font-weight: 700;
}

.collaborator-epistemic ul {
  list-style-position: inside;
  margin: 0.35rem 0 0 0;
  padding: 0;
}

.collaborator-epistemic li {
  padding: 0.12rem 0;
}

.collaborator-mustsay-text {
  margin: 0.35rem 0 0 0;
  color: var(--color-text);
}

.collaborator-link-label {
  display: inline-block;
  margin-top: var(--spacing-xs);
  color: var(--color-secondary);
  font-weight: 600;
}

.collaborator-sources {
  margin-top: var(--spacing-xs);
}

.collaborator-sources-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.collaborator-sources-links a {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.45rem;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.18);
  background: rgba(212, 175, 55, 0.04);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.85rem;
}

.collaborator-sources-links a:hover {
  border-color: rgba(212, 175, 55, 0.35);
  color: var(--color-secondary);
}

#operating-system {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: var(--spacing-md);
}

.operating-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.operating-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.operating-item ul {
  list-style-position: inside;
  margin: var(--spacing-xs) 0 0 0;
}

.operating-item li {
  padding: 0.15rem 0;
  color: var(--color-text);
}

/* ===== EDUCATION ===== */
#education-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.education-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.education-item.placeholder {
  opacity: 0.85;
}

.education-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.education-notes {
  list-style-position: inside;
  margin: var(--spacing-xs) 0 0 0;
}

.education-notes li {
  padding: 0.15rem 0;
}

.education-tags {
  margin-top: var(--spacing-sm);
}

.background-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.background-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.org-period {
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.focus {
  margin-bottom: var(--spacing-sm);
}

.tools {
  margin-top: var(--spacing-sm);
}

/* ===== COLLABORATION MODES ===== */
#collaboration-modes {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: var(--spacing-md);
}

.collab-mode {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.collab-mode h4 {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
}

/* ===== PROOFS ===== */
#proofs-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

.proof-category-title {
  flex-basis: 100%;
  text-align: center;
  color: var(--color-text-light);
  margin: var(--spacing-sm) 0 0;
}

.proof-item {
  flex: 0 1 auto;
}

.proof-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-speed);
  color: var(--color-text);
}

.proof-link:hover {
  background: var(--color-secondary);
  color: var(--color-bg);
  border-color: var(--color-secondary);
}

.proof-link.placeholder {
  opacity: 0.6;
  cursor: not-allowed;
}

.proof-link i {
  font-size: 1.2rem;
}

/* ===== CONTACT ===== */
#contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-item i {
  font-size: 1.2rem;
  color: var(--color-secondary);
  width: 24px;
}

.contact-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) calc(var(--spacing-md) * 1.5);
  background: linear-gradient(135deg, var(--color-secondary), #c99d2e);
  color: var(--color-bg);
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  background: linear-gradient(135deg, #e6c047, var(--color-secondary));
  color: var(--color-bg);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(212, 175, 55, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn.copied {
  background: #27ae60;
}

.btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--color-secondary);
  color: var(--color-bg);
}

/* ===== SOCIAL ICONS ===== */
#social-icons {
  position: fixed;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
}

.social-icons {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text);
  transition: all var(--transition-speed);
}

.social-icons a:hover {
  background: var(--color-secondary);
  color: var(--color-bg);
  border-color: var(--color-secondary);
}

/* ===== FOOTER ===== */
footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  text-align: center;
  color: var(--color-text-light);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
  
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 2.6rem;
  }
  
  .hero-content p {
    font-size: 1.1rem;
  }
  
  .section {
    padding: var(--spacing-md) 0;
  }
  
  .navigation-menu {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  #social-icons {
    position: static;
    transform: none;
    margin-top: var(--spacing-md);
  }
  
  .social-icons {
    flex-direction: row;
    justify-content: center;
  }
  
  .grid,
  #services-grid,
  #projects-grid,
  #collaboration-modes {
    grid-template-columns: 1fr;
  }
}

/* ===== ACCESSIBILITY ===== */
:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-light { color: var(--color-text-light); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ===== FUTURE PLANS ===== */
.future-category {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.future-items {
  list-style-position: inside;
  margin: 0;
}

.future-items li {
  padding: var(--spacing-xs) 0;
  color: var(--color-text);
}

/* ===== READING ===== */
.reading-section {
  margin-bottom: var(--spacing-lg);
}

.reading-grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.reading-card {
  text-align: left;
}

.reading-card h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 1.1rem;
}

.book-author {
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

.book-notes,
.book-impact {
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ===== UNIVERSITY COURSES ===== */
.courses-section {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.courses-grid {
  display: grid;
  gap: var(--spacing-sm);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.course-card {
  padding: var(--spacing-sm);
  background: var(--color-bg);
}

.course-card h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 0.95rem;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.course-credits,
.course-grade {
  font-size: 0.85rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
}

.course-grade {
  color: var(--color-secondary);
  font-weight: 600;
}

/* ===== PREMIUM ANIMATIONS ===== */

/* Scroll reveal items */
.reveal-item {
  opacity: 0;
  transform: none;
  transition: opacity 0.25s ease;
}

.reveal-item.reveal-active {
  opacity: 1;
  transform: none;
}

/* Card glow effect on hover */
.service-card,
.project-card {
  position: relative;
}

.service-card::after,
.project-card::after {
  content: none;
}

.service-card:hover::after,
.project-card:hover::after {
  opacity: 0;
}

.service-card > *,
.project-card > * {
  position: relative;
  z-index: 1;
}

/* Cursor glow */
.cursor-glow {
  display: none;
}

@media (max-width: 768px) {
  .cursor-glow {
    display: none;
  }
}

/* Header transition */
header {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced animations */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Floating animation for decorative elements */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.float-animation {
  animation: float 3s ease-in-out infinite;
}