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

:root {
  --navy:       #0a0f1e;
  --navy-2:     #0d1526;
  --navy-3:     #111d35;
  --blue:       #1a3a6e;
  --sky:        #38bdf8;
  --sky-dim:    #7dd3fc;
  --white:      #f0f6ff;
  --white-dim:  #94a3b8;
  --border:     rgba(56, 189, 248, 0.12);
  --border-2:   rgba(56, 189, 248, 0.25);

  --ml-color:   #f97316;
  --etl-color:  #38bdf8;
  --ana-color:  #22c55e;
  --ia-color:   #a78bfa;
  --web-color:  #14b8a6;

  --radius:     12px;
  --radius-sm:  8px;
  --shadow:     0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.25s ease;

  font-size: 16px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--navy);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

.mono { font-family: 'JetBrains Mono', monospace; font-size: 0.92em; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy-2); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 3px; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1rem 0;
  background: transparent;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(10, 15, 30, 0.9);
  backdrop-filter: blur(16px);
  border-color: var(--border);
}
.nav-container {
  max-width: 1100px; margin: 0 auto; padding: 0 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem; font-weight: 500;
  color: var(--white); text-decoration: none;
  letter-spacing: -0.02em;
}
.logo-bracket { color: var(--sky); }
.logo-dot { color: var(--sky); }

.nav-links { display: flex; list-style: none; gap: 2rem; }
.nav-link {
  color: var(--white-dim); text-decoration: none;
  font-size: 0.9rem; font-weight: 500;
  transition: color var(--transition);
  position: relative;
}
.nav-link::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--sky);
  transition: width var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--white); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding: 6rem 0 4rem;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(26,58,110,0.5) 0%, transparent 70%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 80%);
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border-2);
  border-radius: 100px;
  padding: 0.35rem 0.9rem;
  font-size: 0.8rem; color: var(--sky-dim);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.6s ease both;
}
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ana-color);
  box-shadow: 0 0 6px var(--ana-color);
  animation: pulse 2s ease infinite;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700; line-height: 1.1;
  letter-spacing: -0.03em;
  animation: fadeUp 0.6s 0.1s ease both;
}
.hero-title-accent { color: var(--sky); }

.hero-subtitle {
  margin-top: 1.2rem;
  font-size: 1rem; color: var(--sky-dim);
  animation: fadeUp 0.6s 0.2s ease both;
}

.hero-desc {
  margin-top: 1rem;
  font-size: 1rem; color: var(--white-dim); max-width: 520px;
  animation: fadeUp 0.6s 0.3s ease both;
}
.hero-school {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--sky);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.02em;
  opacity: 0.85;
}

.hero-cta {
  margin-top: 2rem; display: flex; gap: 1rem; flex-wrap: wrap;
  animation: fadeUp 0.6s 0.4s ease both;
}

.hero-stats {
  margin-top: 3rem;
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
  animation: fadeUp 0.6s 0.5s ease both;
}
.stat { text-align: center; }
.stat-number {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem; font-weight: 700; color: var(--sky);
}
.stat-label { font-size: 0.78rem; color: var(--white-dim); }
.stat-divider { width: 1px; height: 40px; background: var(--border-2); }

.hero-scroll {
  position: absolute; bottom: 2rem; left: 1.5rem;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  color: var(--white-dim); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--sky-dim), transparent);
  animation: scrollLine 1.5s ease infinite;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600;
  text-decoration: none; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: none;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--sky);
  color: var(--navy);
  box-shadow: 0 4px 20px rgba(56,189,248,0.3);
}
.btn-primary:hover { box-shadow: 0 6px 28px rgba(56,189,248,0.45); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border-2);
}
.btn-outline:hover { background: rgba(56,189,248,0.08); border-color: var(--sky); }

/* ===== SECTION COMMONS ===== */
.section-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem; color: var(--sky);
  letter-spacing: 0.05em; display: block; margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700; letter-spacing: -0.02em;
  color: var(--white);
}
.section-subtitle {
  color: var(--white-dim); margin-top: 0.5rem;
  font-size: 1rem; max-width: 520px;
}
.section-header { text-align: center; margin-bottom: 2.5rem; }
.section-header .section-subtitle { margin: 0.5rem auto 0; }

/* ===== PROJECTS SECTION ===== */
.projects { padding: 6rem 0; }

/* TABS */
.tabs-container { display: flex; justify-content: center; margin-bottom: 2.5rem; }
.tabs {
  display: flex; gap: 0.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.35rem;
}
.tab {
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  font-size: 0.85rem; font-weight: 500;
  color: var(--white-dim);
  background: none; border: none; cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.tab:hover { color: var(--white); }
.tab.active {
  background: var(--sky);
  color: var(--navy);
  font-weight: 600;
}

/* GRID */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* CARD */
.project-card {
  position: relative;
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-2);
  box-shadow: var(--shadow);
}
.project-card.hidden { display: none; }

.card-accent {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  z-index: 1;
}
.ml-accent        { background: linear-gradient(90deg, var(--ml-color),  transparent); }
.etl-accent       { background: linear-gradient(90deg, var(--etl-color), transparent); }
.analytics-accent { background: linear-gradient(90deg, var(--ana-color), transparent); }
.ia-accent        { background: linear-gradient(90deg, var(--ia-color),  transparent); }
.web-accent       { background: linear-gradient(90deg, var(--web-color), transparent); }

.card-preview {
  margin: -1.5rem -1.5rem 0;
  height: 170px;
  min-height: 170px;
  max-height: 170px;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  position: relative;
  cursor: pointer;
  flex: 0 0 170px;
}
.card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.4s ease, filter 0.3s ease;
  display: block;
}
.card-preview-overlay {
  position: absolute; inset: 0;
  background: rgba(10, 15, 30, 0.52);
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  opacity: 0.55;
  transition: opacity 0.25s ease;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.card-preview-overlay i { font-size: 1rem; }
.card-preview:hover .card-preview-overlay { opacity: 1; }
.card-preview:hover img { transform: scale(1.04); filter: brightness(0.7); }

.card-preview-count {
  position: absolute; bottom: 6px; right: 8px;
  background: rgba(0,0,0,0.6);
  color: var(--sky-dim);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 20px;
  pointer-events: none;
}

/* ===== GALLERY MODAL ===== */
.gallery-modal {
  display: none;
  position: fixed; inset: 0;
  z-index: 1000;
  align-items: center; justify-content: center;
}
.gallery-modal.open { display: flex; }

.gallery-backdrop {
  position: absolute; inset: 0;
  background: rgba(5, 8, 18, 0.92);
  backdrop-filter: blur(6px);
}
.gallery-box {
  position: relative; z-index: 1;
  background: var(--navy-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  width: min(92vw, 860px);
  max-height: 92vh;
  display: flex; flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.7);
  animation: modalIn 0.22s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.gallery-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.gallery-title {
  font-size: 0.9rem; font-weight: 700; color: var(--white);
  display: flex; align-items: center; gap: 0.5rem;
}
.gallery-title i { color: var(--sky); }
.gallery-counter-badge {
  font-size: 0.75rem; color: var(--white-dim);
  background: rgba(56,189,248,0.1);
  padding: 2px 8px; border-radius: 20px;
  border: 1px solid var(--border);
}
.gallery-close {
  background: none; border: none; cursor: pointer;
  color: var(--white-dim); font-size: 1.3rem;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}
.gallery-close:hover { background: rgba(255,255,255,0.08); color: var(--white); }

.gallery-stage {
  position: relative;
  flex: 1;
  min-height: 360px;
  background: #070c1a;
  overflow: hidden;
}
.gallery-stage img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: opacity 0.18s ease;
}
.gallery-stage img.fade { opacity: 0; }

.gallery-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(10,15,30,0.75);
  border: 1px solid var(--border-2);
  color: var(--white);
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 1rem;
  transition: background 0.2s, border-color 0.2s;
  z-index: 2;
}
.gallery-nav:hover { background: var(--sky); border-color: var(--sky); color: #000; }
.gallery-nav.prev { left: 10px; }
.gallery-nav.next { right: 10px; }
.gallery-nav:disabled { opacity: 0.25; cursor: default; }

.gallery-thumbs {
  display: flex; gap: 6px;
  padding: 0.7rem 1rem;
  overflow-x: auto;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}
.gallery-thumb {
  width: 60px; height: 42px;
  border-radius: 5px;
  object-fit: cover;
  object-position: top;
  cursor: pointer;
  border: 2px solid transparent;
  flex-shrink: 0;
  transition: border-color 0.2s, opacity 0.2s;
  opacity: 0.55;
}
.gallery-thumb.active { border-color: var(--sky); opacity: 1; }
.gallery-thumb:hover { opacity: 0.85; }

.card-header { display: flex; align-items: center; gap: 0.8rem; }
.card-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0;
}
.ml-icon        { background: rgba(249,115,22,0.15);  color: var(--ml-color); }
.etl-icon       { background: rgba(56,189,248,0.12);  color: var(--etl-color); }
.analytics-icon { background: rgba(34,197,94,0.12);   color: var(--ana-color); }
.ia-icon        { background: rgba(167,139,250,0.12); color: var(--ia-color); }
.web-icon       { background: rgba(20,184,166,0.12);  color: var(--web-color); }

.card-type {
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.25rem 0.6rem; border-radius: 100px;
}
.ml-type        { background: rgba(249,115,22,0.15);  color: var(--ml-color); }
.etl-type       { background: rgba(56,189,248,0.12);  color: var(--etl-color); }
.analytics-type { background: rgba(34,197,94,0.12);   color: var(--ana-color); }
.ia-type        { background: rgba(167,139,250,0.12); color: var(--ia-color); }
.web-type       { background: rgba(20,184,166,0.12);  color: var(--web-color); }

.card-title { font-size: 1.1rem; font-weight: 700; line-height: 1.3; }
.card-desc  { font-size: 0.88rem; color: var(--white-dim); line-height: 1.6; flex: 1; }

/* KPIs */
.card-kpis {
  display: flex; gap: 0.5rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
}
.kpi { flex: 1; text-align: center; }
.kpi-value {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem; font-weight: 700; color: var(--sky);
}
.kpi-label { font-size: 0.68rem; color: var(--white-dim); }

/* STACK */
.card-stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.badge {
  font-size: 0.72rem; font-weight: 500;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border-2);
  color: var(--sky-dim);
  padding: 0.2rem 0.55rem; border-radius: 100px;
}

/* LINKS */
.card-links { display: flex; gap: 0.75rem; margin-top: auto; flex-wrap: wrap; }
.card-link-gallery {
  color: var(--sky);
  border-color: rgba(56,189,248,0.25);
  background: rgba(56,189,248,0.06);
}
.card-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.82rem; font-weight: 600;
  color: var(--white-dim); text-decoration: none;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.card-link:hover {
  color: var(--white); border-color: var(--sky);
  background: rgba(56,189,248,0.08);
}
.card-link-demo {
  color: var(--sky); border-color: rgba(56,189,248,0.25);
}
.card-link-ai {
  color: var(--ia-color);
  border-color: rgba(167,139,250,0.3);
  background: rgba(167,139,250,0.06);
  cursor: pointer;
}
.card-link-ai:hover {
  color: #c4b5fd;
  border-color: var(--ia-color);
  background: rgba(167,139,250,0.14);
}

/* ===== CARD DETAILS STRIP ===== */
.card-details-toggle {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.78rem; font-weight: 600;
  color: var(--white-dim);
  background: rgba(56,189,248,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.8rem;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  align-self: flex-start;
}
.card-details-toggle:hover { color: var(--sky); border-color: var(--sky-dim); background: rgba(56,189,248,0.1); }
.card-details-toggle.open  { color: var(--sky); border-color: var(--sky-dim); }

.card-details-strip {
  display: none;
  flex-direction: column;
  gap: 0.4rem;
}
.card-details-strip.open { display: flex; animation: fadeUp 0.2s ease both; }

.card-details-thumbs {
  display: flex; gap: 5px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
  padding-bottom: 3px;
}
.card-details-thumbs::-webkit-scrollbar { height: 3px; }
.card-details-thumbs::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 2px; }

.card-details-thumb {
  width: 70px; height: 48px;
  border-radius: 5px;
  object-fit: cover; object-position: top;
  border: 2px solid var(--border);
  flex-shrink: 0;
  cursor: pointer;
  opacity: 0.65;
  transition: opacity 0.2s, border-color 0.2s, transform 0.18s;
}
.card-details-thumb:hover { opacity: 1; border-color: var(--sky); transform: scale(1.06); }

/* ===== ABOUT ===== */
.about { padding: 6rem 0; background: var(--navy-2); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem; align-items: start;
}
.about-text p {
  color: var(--white-dim); margin-top: 1rem; font-size: 0.95rem; line-height: 1.7;
}
.about-text p strong { color: var(--white); }
.hero-availability {
  margin-top: 1.2rem;
  margin-bottom: 0;
  max-width: 480px;
}

.about-availability {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.2rem;
  padding: 1rem 1.2rem;
  background: rgba(56,189,248,0.05);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
}
.avail-item {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--white-dim);
}
.avail-item i {
  color: var(--sky);
  font-size: 0.8rem;
  width: 14px;
  flex-shrink: 0;
}
.avail-item strong {
  color: var(--white);
  margin-right: 0.4rem;
}

.about-links { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }

.skills-grid { display: flex; flex-direction: column; gap: 1.5rem; }
.skill-group { }
.skill-group-title {
  font-size: 0.85rem; font-weight: 600;
  color: var(--sky-dim); margin-bottom: 0.6rem;
  display: flex; align-items: center; gap: 0.4rem;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.skill-tag {
  font-size: 0.78rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--white-dim);
  padding: 0.3rem 0.7rem; border-radius: var(--radius-sm);
  transition: color var(--transition), border-color var(--transition);
}
.skill-tag:hover { color: var(--white); border-color: var(--sky-dim); }

/* ===== LIENS ===== */
.liens { padding: 6rem 0; background: var(--navy-2); }
.liens-inner { text-align: center; }
.liens-inner .section-title { margin-top: 0.5rem; }
.liens-inner .section-subtitle { margin: 0.5rem auto 2.5rem; }

.liens-skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.2rem;
  text-align: left;
  margin-bottom: 0;
}
.liens-divider {
  width: 60px;
  height: 2px;
  background: var(--border-2);
  margin: 2.5rem auto;
}

.liens-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 520px;
  margin: 0 auto;
}
.lien-card {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.1rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  text-decoration: none;
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.lien-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.lien-icon {
  font-size: 1.6rem;
  width: 42px;
  flex-shrink: 0;
}
.lien-card div {
  flex: 1;
  text-align: left;
}
.lien-label {
  display: block;
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
}
.lien-desc {
  display: block;
  font-size: 0.8rem;
  color: var(--white-dim);
  margin-top: 0.1rem;
}
.lien-arrow {
  font-size: 0.9rem;
  color: var(--white-dim);
  transition: transform var(--transition);
}
.lien-card:hover .lien-arrow { transform: translateX(4px); }

.lien-linkedin { border-color: rgba(10,102,194,0.3); }
.lien-linkedin:hover { border-color: #0a66c2; background: rgba(10,102,194,0.08); }
.lien-linkedin .lien-icon { color: #0a66c2; }

.lien-github { border-color: rgba(255,255,255,0.12); }
.lien-github:hover { border-color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.05); }
.lien-github .lien-icon { color: var(--white); }

.lien-behance { border-color: rgba(23,105,255,0.3); }
.lien-behance:hover { border-color: #1769ff; background: rgba(23,105,255,0.08); }
.lien-behance .lien-icon { color: #1769ff; }

/* ===== CONTACT ===== */
.contact { padding: 6rem 0; }
.contact-inner { text-align: center; }
.contact-inner .section-title { margin-top: 0.5rem; }
.contact-inner .section-subtitle { margin: 0.75rem auto 2.5rem; }

.contact-email {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: 1.2rem; font-weight: 600;
  color: var(--sky); text-decoration: none;
  padding: 1rem 2rem;
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  transition: background var(--transition), box-shadow var(--transition);
}
.contact-email:hover {
  background: rgba(56,189,248,0.08);
  box-shadow: 0 4px 24px rgba(56,189,248,0.2);
}

.contact-socials { display: flex; justify-content: center; gap: 1rem; margin-top: 2rem; }
.social-btn {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--white-dim);
  text-decoration: none; font-size: 1.1rem;
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
}
.social-btn:hover {
  color: var(--sky); border-color: var(--sky);
  background: rgba(56,189,248,0.1);
  transform: translateY(-3px);
}

/* ===== FOOTER ===== */
.footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  background: var(--navy-2);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
}
.footer-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem; color: var(--white);
}
.footer-copy { font-size: 0.8rem; color: var(--white-dim); }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
@keyframes cardAppear {
  from { opacity: 0; transform: translateY(18px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}
.card-appear { animation: cardAppear 0.35s ease both; }

/* Typing cursor */
.hero-typing::after {
  content: '|';
  margin-left: 2px;
  color: var(--sky);
  animation: pulse 0.9s step-end infinite;
}

.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none; flex-direction: column;
    position: fixed; top: 60px; left: 0; right: 0;
    background: rgba(10,15,30,0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    gap: 1.2rem;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .hero { padding: 5rem 0 3rem; }
  .hero-scroll { display: none; }

  .tabs { flex-wrap: wrap; border-radius: var(--radius); }
  .tab  { border-radius: var(--radius-sm); }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-email { font-size: 0.95rem; padding: 0.8rem 1.2rem; }
}

/* ===== CHAT WIDGET ===== */

/* Wrapper that holds hint + button together */
.chat-toggle-wrap {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 202;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.chat-toggle-wrap.panel-open {
  right: calc(380px + 1.5rem);
}

/* Hint label */
.chat-hint {
  background: var(--navy-3);
  border: 1px solid var(--border-2);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.72rem;
  color: var(--sky);
  white-space: nowrap;
  pointer-events: none;
  animation: hint-bob 2.8s ease-in-out 1.5s infinite;
  transition: opacity 0.25s ease;
}
.chat-hint::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--border-2);
}
.chat-toggle-wrap.panel-open .chat-hint {
  opacity: 0;
}
@keyframes hint-bob {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-4px); }
}

/* Floating toggle button */
.chat-toggle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--sky);
  border: none;
  cursor: pointer;
  color: var(--navy);
  font-size: 1.2rem;
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.chat-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 30px rgba(56, 189, 248, 0.55);
}
.chat-toggle-icon,
.chat-toggle-close {
  position: absolute;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.chat-toggle-close { opacity: 0; transform: rotate(-90deg); }
.chat-toggle.panel-open .chat-toggle-icon { opacity: 0; transform: rotate(90deg); }
.chat-toggle.panel-open .chat-toggle-close { opacity: 1; transform: rotate(0); }

/* Pulse ring on first load */
.chat-toggle::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--sky);
  opacity: 0;
  animation: chat-ring 2.5s ease 3s 3;
}
@keyframes chat-ring {
  0%   { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* Full-height sidebar (VS Code style) */
.chat-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 380px;
  z-index: 201;
  background: var(--navy-2);
  border-left: 1px solid var(--border-2);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
}
.chat-sidebar.open {
  transform: translateX(0);
}

/* Backdrop */
.chat-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.chat-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* Header */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.1rem;
  height: 50px;
  border-bottom: 1px solid var(--border);
  background: var(--navy-3);
  flex-shrink: 0;
}
.chat-header-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
}
.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.chat-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 6px rgba(34, 197, 94, 0.7);
  animation: chat-pulse 2.5s ease infinite;
}
@keyframes chat-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}
.chat-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--white-dim);
  font-size: 0.9rem;
  padding: 4px 6px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
  line-height: 1;
}
.chat-close:hover { color: var(--white); background: rgba(255,255,255,0.07); }

/* Subtitle chips */
.chat-subtitle {
  padding: 0.5rem 1.1rem;
  font-size: 0.75rem;
  color: var(--white-dim);
  border-bottom: 1px solid var(--border);
  background: var(--navy-3);
  flex-shrink: 0;
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-wrap: wrap;
}
.chat-chip {
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 7px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--sky-dim);
}

/* Messages area */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  scrollbar-width: thin;
  scrollbar-color: var(--blue) transparent;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 2px; }

.chat-msg { display: flex; flex-direction: column; }
.chat-msg.user { align-items: flex-end; }
.chat-msg.bot  { align-items: flex-start; }

.chat-bubble {
  max-width: 90%;
  padding: 0.65rem 0.95rem;
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.6;
  word-break: break-word;
}
.chat-msg.user .chat-bubble {
  background: var(--sky);
  color: var(--navy);
  border-bottom-right-radius: 3px;
  font-weight: 500;
}
.chat-msg.bot .chat-bubble {
  background: var(--navy-3);
  border: 1px solid var(--border);
  color: var(--white);
  border-bottom-left-radius: 3px;
}

/* Typing indicator */
.chat-typing .chat-bubble {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 0.7rem 1rem;
}
.chat-typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sky-dim);
  animation: chat-bounce 1.2s ease infinite;
}
.chat-typing-dot:nth-child(2) { animation-delay: 0.18s; }
.chat-typing-dot:nth-child(3) { animation-delay: 0.36s; }
@keyframes chat-bounce {
  0%, 75%, 100% { transform: translateY(0); opacity: 0.45; }
  35%            { transform: translateY(-6px); opacity: 1; }
}

/* Input area */
.chat-input-area {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0.75rem 1.1rem;
  border-top: 1px solid var(--border);
  background: var(--navy-3);
  flex-shrink: 0;
}
.chat-input {
  flex: 1;
  background: var(--navy-2);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  resize: none;
  outline: none;
  min-height: 40px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.5;
  transition: border-color var(--transition);
  scrollbar-width: thin;
}
.chat-input::placeholder { color: var(--white-dim); }
.chat-input:focus { border-color: var(--sky); }

.chat-send {
  width: 40px;
  height: 40px;
  background: var(--sky);
  border: none;
  border-radius: 8px;
  color: var(--navy);
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
  flex-shrink: 0;
}
.chat-send:hover:not(:disabled) { background: var(--sky-dim); transform: scale(1.06); }
.chat-send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* Mobile */
@media (max-width: 600px) {
  .chat-sidebar { width: 100%; border-left: none; }
  .chat-toggle-wrap.panel-open { opacity: 0; pointer-events: none; }
}