/* ============================================================
   SIE RACHID TRAORE – Portfolio Premium
   Palette: Bleu nuit · Bleu électrique · Blanc · Gris
   Fonts: Syne (display) + DM Sans (body) + DM Mono (code)
   ============================================================ */

/* ─── VARIABLES ─────────────────────────────────────────────── */
:root {
  --bg-dark:        #050b18;
  --bg-mid:         #080f22;
  --bg-card:        rgba(10, 18, 40, 0.75);
  --bg-glass:       rgba(14, 25, 55, 0.6);
  --border-glass:   rgba(59, 130, 246, 0.15);
  --border-subtle:  rgba(255, 255, 255, 0.06);

  --blue-deep:      #0a1628;
  --blue-navy:      #0d2458;
  --blue-electric:  #1e56ff;
  --blue-bright:    #3b82f6;
  --blue-glow:      #60a5fa;
  --blue-accent:    #93c5fd;

  --white:          #ffffff;
  --grey-100:       #f1f5f9;
  --grey-200:       #e2e8f0;
  --grey-400:       #94a3b8;
  --grey-500:       #64748b;
  --grey-700:       #334155;
  --grey-900:       #0f172a;

  --text-primary:   #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;

  --gradient-hero:  linear-gradient(135deg, #050b18 0%, #0d2458 50%, #050b18 100%);
  --gradient-blue:  linear-gradient(135deg, #1e56ff, #3b82f6);
  --gradient-card:  linear-gradient(145deg, rgba(30,86,255,0.08), rgba(59,130,246,0.04));
  --gradient-text:  linear-gradient(135deg, #60a5fa, #a78bfa, #3b82f6);

  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-full: 9999px;

  --shadow-sm:   0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md:   0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg:   0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-blue: 0 0 40px rgba(30, 86, 255, 0.2);
  --shadow-glow: 0 0 80px rgba(59, 130, 246, 0.15);

  --transition-fast:   0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'DM Mono', monospace;

  --nav-h: 72px;
  --section-pad: clamp(80px, 10vw, 130px);
  --container-w: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }
input, textarea, select {
  font-family: var(--font-body);
  color: var(--text-primary);
}
:focus-visible {
  outline: 2px solid var(--blue-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ─── SCROLLBAR ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--blue-electric); border-radius: var(--radius-full); }

/* ─── CURSOR ─────────────────────────────────────────────────── */
.cursor-dot, .cursor-ring {
  position: fixed; pointer-events: none; z-index: 9999;
  border-radius: 50%; transform: translate(-50%, -50%);
  transition: opacity var(--transition-fast);
}
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--blue-bright);
  top: var(--cy, -20px); left: var(--cx, -20px);
}
.cursor-ring {
  width: 32px; height: 32px;
  border: 1.5px solid rgba(59,130,246,0.5);
  top: var(--cy, -40px); left: var(--cx, -40px);
  transition: top 0.1s, left 0.1s, width var(--transition-base), height var(--transition-base), border-color var(--transition-base);
}
.cursor-ring.hovered { width: 52px; height: 52px; border-color: var(--blue-bright); }
@media (hover: none) { .cursor-dot, .cursor-ring { display: none; } }

/* ─── LOADER ─────────────────────────────────────────────────── */
#loader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg-dark);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#loader.loaded { opacity: 0; visibility: hidden; }
.loader-inner { text-align: center; }
.loader-logo {
  font-family: var(--font-display);
  font-size: 3rem; font-weight: 800;
  background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
  animation: pulse 1.2s ease-in-out infinite alternate;
}
.loader-bar {
  width: 200px; height: 3px;
  background: rgba(255,255,255,0.08); border-radius: var(--radius-full);
  overflow: hidden; margin: 0 auto 12px;
}
.loader-fill {
  height: 100%; background: var(--gradient-blue);
  border-radius: var(--radius-full);
  animation: loaderFill 1.8s ease-in-out forwards;
}
.loader-text { font-size: 0.8rem; color: var(--text-muted); font-family: var(--font-mono); letter-spacing: 0.1em; }
@keyframes loaderFill { from{width:0} to{width:100%} }
@keyframes pulse { from{opacity:0.6} to{opacity:1} }

/* ─── PARTICLES ──────────────────────────────────────────────── */
#particles-js {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.4;
}

/* ─── SECTIONS LAYOUT ────────────────────────────────────────── */
section {
  position: relative; z-index: 1;
  padding: var(--section-pad) 0;
}
.section-dark { background: rgba(8, 15, 34, 0.7); }
.section-container {
  max-width: var(--container-w);
  margin: 0 auto; padding: 0 clamp(20px, 5vw, 60px);
}
.section-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500;
  color: var(--blue-bright); text-transform: uppercase; letter-spacing: 0.15em;
  margin-bottom: 24px;
}
.section-label span {
  font-size: 0.65rem; padding: 2px 8px;
  background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--radius-full); color: var(--blue-glow);
}
.section-header { margin-bottom: clamp(40px, 6vw, 70px); }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700; line-height: 1.15;
  margin-bottom: 16px;
}
.section-subtitle { color: var(--text-secondary); font-size: 1.05rem; max-width: 600px; }
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── GLASS CARD ─────────────────────────────────────────────── */
.glass-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ─── BUTTONS ────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px; border-radius: var(--radius-full);
  background: var(--gradient-blue);
  color: var(--white); font-weight: 600; font-size: 0.95rem;
  transition: transform var(--transition-spring), box-shadow var(--transition-base), opacity var(--transition-base);
  box-shadow: 0 4px 20px rgba(30,86,255,0.35);
  position: relative; overflow: hidden;
}
.btn-primary::after {
  content:''; position:absolute; inset:0;
  background: linear-gradient(rgba(255,255,255,0.15), transparent);
  opacity:0; transition: opacity var(--transition-base);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(30,86,255,0.5); }
.btn-primary:hover::after { opacity:1; }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 26px; border-radius: var(--radius-full);
  border: 1.5px solid rgba(59,130,246,0.4);
  color: var(--blue-glow); font-weight: 600; font-size: 0.95rem;
  transition: all var(--transition-base);
  background: rgba(59,130,246,0.06);
}
.btn-secondary:hover {
  background: rgba(59,130,246,0.15);
  border-color: var(--blue-bright);
  transform: translateY(-2px);
}
.btn-secondary i { transition: transform var(--transition-spring); }
.btn-secondary:hover i { transform: translateX(4px); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: var(--radius-full);
  color: var(--text-secondary); font-weight: 500; font-size: 0.95rem;
  transition: color var(--transition-base);
}
.btn-ghost:hover { color: var(--text-primary); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-full);
  border: 1.5px solid var(--border-glass);
  color: var(--text-secondary); font-weight: 500; font-size: 0.9rem;
  transition: all var(--transition-base);
}
.btn-outline:hover { border-color: var(--blue-bright); color: var(--blue-glow); }

/* ─── NAVIGATION ─────────────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
#navbar.scrolled {
  background: rgba(5, 11, 24, 0.88);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
.nav-container {
  max-width: var(--container-w); margin: 0 auto;
  height: 100%; padding: 0 clamp(20px, 5vw, 60px);
  display: flex; align-items: center; gap: 40px;
}
.nav-logo {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
  color: var(--white);
}
.logo-text { letter-spacing: -0.02em; }
.logo-dot {
  display: inline-block; width: 7px; height: 7px;
  background: var(--blue-electric); border-radius: 50%;
  animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.7)} }

.nav-links {
  display: flex; align-items: center; gap: 4px; margin-left: auto;
}
.nav-link {
  padding: 8px 14px; border-radius: var(--radius-full);
  font-size: 0.88rem; font-weight: 500; color: var(--text-secondary);
  transition: all var(--transition-base); white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--white); background: rgba(59,130,246,0.1); }
.nav-cta {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 20px; border-radius: var(--radius-full);
  background: var(--gradient-blue);
  color: var(--white); font-size: 0.88rem; font-weight: 600;
  transition: transform var(--transition-spring), box-shadow var(--transition-base);
  box-shadow: 0 4px 14px rgba(30,86,255,0.3);
  white-space: nowrap; margin-left: 8px;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(30,86,255,0.45); }

.nav-burger {
  display: none; flex-direction: column; gap: 5px;
  width: 36px; height: 36px; justify-content: center; align-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  transition: background var(--transition-base);
}
.nav-burger span {
  display: block; width: 18px; height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-burger.open span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

.nav-mobile {
  display: none; position: fixed; inset: var(--nav-h) 0 0 0;
  background: rgba(5,11,24,0.97);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  z-index: 999;
}
.nav-mobile.open { display: flex; animation: slideDown 0.3s ease; }
@keyframes slideDown { from{opacity:0;transform:translateY(-10px)} to{opacity:1;transform:translateY(0)} }
.nav-mobile ul { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.mobile-link {
  display: block; padding: 14px 40px;
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 600;
  color: var(--text-secondary); transition: color var(--transition-base);
  text-align: center;
}
.mobile-link:hover { color: var(--white); }

/* ─── HERO ───────────────────────────────────────────────────── */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding-top: var(--nav-h); position: relative; overflow: hidden;
}
.hero-bg-glow {
  position: absolute; border-radius: 50%; pointer-events: none; filter: blur(120px);
}
.glow-1 {
  width: 700px; height: 700px; background: rgba(30,86,255,0.12);
  top: -150px; right: -100px;
}
.glow-2 {
  width: 500px; height: 500px; background: rgba(147,197,253,0.07);
  bottom: -100px; left: -100px;
}
.glow-3 {
  width: 400px; height: 400px; background: rgba(167,139,250,0.06);
  top: 30%; left: 30%;
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: var(--container-w); margin: 0 auto;
  padding: 0 clamp(24px, 6vw, 80px);
  padding-top: clamp(40px, 8vw, 100px);
  padding-bottom: clamp(60px, 8vw, 100px);
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; border-radius: var(--radius-full);
  border: 1px solid rgba(59,130,246,0.3);
  background: rgba(59,130,246,0.08);
  font-size: 0.8rem; font-weight: 500; color: var(--blue-glow);
  margin-bottom: 32px;
  font-family: var(--font-mono);
}
.badge-dot, .avail-dot {
  width: 7px; height: 7px; border-radius: 50%; background: #22c55e; flex-shrink: 0;
}
.pulse { animation: pulseGreen 2s ease-in-out infinite; }
@keyframes pulseGreen {
  0%,100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(34,197,94,0); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 7rem);
  font-weight: 800; line-height: 1; letter-spacing: -0.03em;
  margin-bottom: 28px;
}
.name-line { display: block; }
.name-accent {
  background: var(--gradient-text);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  margin-bottom: 28px; min-height: 38px;
}
.title-prefix { font-weight: 400; }
.typewriter {
  color: var(--blue-glow); font-family: var(--font-mono); font-weight: 500;
}
.cursor-blink {
  color: var(--blue-bright); font-weight: 300;
  animation: blink 0.9s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-desc {
  max-width: 640px; font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  color: var(--text-secondary); margin-bottom: 42px; line-height: 1.7;
}
.hero-desc strong { color: var(--text-primary); }

.hero-actions {
  display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 60px;
}

.hero-stats {
  display: flex; align-items: center; gap: clamp(20px, 4vw, 50px); flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: var(--font-display); font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800; color: var(--white); line-height: 1;
}
.stat-plus { color: var(--blue-bright); font-weight: 700; font-size: 1.5rem; }
.stat-label { font-size: 0.78rem; color: var(--text-muted); font-family: var(--font-mono); margin-top: 4px; }
.stat-divider { width: 1px; height: 50px; background: var(--border-subtle); }

.hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted);
  letter-spacing: 0.12em; text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--blue-bright), transparent);
}
@keyframes scrollBounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(8px)} }

/* ─── ABOUT ──────────────────────────────────────────────────── */
.about-grid {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: clamp(40px, 6vw, 80px); align-items: center;
}
.about-visual { position: relative; }
.about-photo-frame {
  position: relative; width: min(320px, 90%);
  border-radius: var(--radius-xl); overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-lg), var(--shadow-blue);
}
.photo-glow {
  position: absolute; inset: -30px;
  background: radial-gradient(ellipse at center, rgba(30,86,255,0.2) 0%, transparent 70%);
  pointer-events: none;
}
.about-photo {
  width: 100%; aspect-ratio: 3/4; object-fit: cover;
  display: block; filter: grayscale(10%) contrast(1.05);
  transition: filter var(--transition-slow);
}
.about-photo-frame:hover .about-photo { filter: grayscale(0%) contrast(1.1); }
.photo-badge {
  position: absolute; bottom: 20px; right: -20px;
  display: flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--radius-full);
  background: var(--gradient-blue);
  font-size: 0.82rem; font-weight: 600; color: var(--white);
  box-shadow: 0 8px 24px rgba(30,86,255,0.4);
  white-space: nowrap;
}

.about-tech-pills {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px;
}
.tech-pill {
  padding: 6px 16px; border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--blue-glow);
  background: rgba(59,130,246,0.07);
  transition: all var(--transition-base);
}
.tech-pill:hover { background: rgba(59,130,246,0.18); border-color: var(--blue-bright); }

.about-content {}
.about-text {
  color: var(--text-secondary); margin-bottom: 20px; font-size: 1rem; line-height: 1.75;
}
.about-text strong { color: var(--text-primary); }

.about-highlights { margin: 32px 0; display: flex; flex-direction: column; gap: 16px; }
.highlight-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px 20px; border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: rgba(59,130,246,0.04);
  transition: all var(--transition-base);
}
.highlight-item:hover { border-color: rgba(59,130,246,0.3); background: rgba(59,130,246,0.08); transform: translateX(4px); }
.highlight-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright); flex-shrink: 0; font-size: 1rem;
}
.highlight-item h4 { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
.highlight-item p { font-size: 0.82rem; color: var(--text-secondary); }

.about-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ─── SKILLS ─────────────────────────────────────────────────── */
.skills-tabs {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 40px;
}
.tab-btn {
  padding: 10px 22px; border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  font-size: 0.88rem; font-weight: 500; color: var(--text-secondary);
  transition: all var(--transition-base);
  background: transparent;
}
.tab-btn:hover { color: var(--text-primary); border-color: rgba(59,130,246,0.4); }
.tab-btn.active {
  background: var(--gradient-blue); color: var(--white);
  border-color: transparent; box-shadow: 0 4px 16px rgba(30,86,255,0.3);
}

.skills-panels {}
.skills-panel { display: none; }
.skills-panel.active { display: block; }

.skill-cards-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.skill-card {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 22px; border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}
.skill-card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px rgba(59,130,246,0.1);
}
.skill-card-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04); border: 1px solid rgba(var(--accent,59,130,246),0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; overflow: hidden; color: #ccc;
}
.skill-card-icon img { width: 100%; height: 100%; object-fit: cover; }
.skill-card-body { flex: 1; min-width: 0; }
.skill-card-body h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.skill-card-body p { font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 10px; line-height: 1.5; }
.skill-bar {
  height: 4px; background: rgba(255,255,255,0.06);
  border-radius: var(--radius-full); overflow: hidden; margin-bottom: 4px;
}
.skill-fill {
  height: 100%; width: 0; border-radius: var(--radius-full);
  background: var(--gradient-blue);
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.3s;
}
.skill-fill.animated { width: var(--pct); }
.skill-pct { font-family: var(--font-mono); font-size: 0.72rem; color: var(--blue-glow); }

.soft-skills-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.soft-skill-item {
  padding: 24px; border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass); background: var(--bg-glass);
  transition: all var(--transition-base);
}
.soft-skill-item:hover { border-color: rgba(59,130,246,0.3); transform: translateY(-4px); }
.soft-icon {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright); font-size: 1.1rem; margin-bottom: 14px;
}
.soft-skill-item h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; }
.soft-skill-item p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.55; }

/* ─── PROJECTS ───────────────────────────────────────────────── */
.projects-filters {
  display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 20px; border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  font-size: 0.86rem; font-weight: 500; color: var(--text-secondary);
  transition: all var(--transition-base); background: transparent;
}
.filter-btn:hover { color: var(--text-primary); border-color: rgba(59,130,246,0.4); }
.filter-btn.active {
  background: rgba(59,130,246,0.15); color: var(--blue-glow);
  border-color: rgba(59,130,246,0.4);
}

.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.project-card {
  border-radius: var(--radius-lg); border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  overflow: hidden; transition: all var(--transition-base);
  display: flex; flex-direction: column;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59,130,246,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), var(--shadow-blue);
}
.project-card.hidden { display: none; }

.project-card-img { position: relative; height: 180px; overflow: hidden; }
.project-img-bg {
  height: 100%; background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.35); transition: transform var(--transition-slow);
}
.project-card:hover .project-img-bg { transform: scale(1.05); }
.project-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition-base);
}
.project-card:hover .project-overlay { opacity: 1; }
.project-detail-btn {
  padding: 10px 24px; border-radius: var(--radius-full);
  background: var(--gradient-blue); color: var(--white);
  font-size: 0.85rem; font-weight: 600;
  transform: translateY(10px); transition: all var(--transition-spring);
}
.project-card:hover .project-detail-btn { transform: translateY(0); }
a.project-detail-btn { display: inline-block; }

.project-card-body { padding: 20px 22px; flex: 1; display: flex; flex-direction: column; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.project-tag {
  padding: 4px 12px; border-radius: var(--radius-full);
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500;
  color: var(--blue-glow); background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
}
.project-card-body h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 8px; line-height: 1.35; }
.project-card-body p { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.6; flex: 1; }
.project-results {
  display: flex; flex-direction: column; gap: 4px; margin-top: 14px;
  padding-top: 14px; border-top: 1px solid var(--border-subtle);
}
.project-results span {
  font-size: 0.78rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px;
}
.project-results i { color: #22c55e; font-size: 0.7rem; }

/* Project Modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.8); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all var(--transition-base);
  padding: 20px;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-box {
  max-width: 640px; width: 100%; max-height: 80vh; overflow-y: auto;
  background: var(--bg-mid); border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl); padding: 36px;
  position: relative; transform: scale(0.95);
  transition: transform var(--transition-spring);
}
.modal-overlay.open .modal-box { transform: scale(1); }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--border-glass); color: var(--text-secondary);
  font-size: 1.2rem; display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-base);
}
.modal-close:hover { background: rgba(239,68,68,0.2); color: #f87171; }
.modal-content h2 { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 16px; }
.modal-content p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; font-size: 0.95rem; }
.modal-content .modal-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.modal-content .modal-tag {
  padding: 5px 14px; border-radius: var(--radius-full); font-size: 0.8rem;
  background: rgba(59,130,246,0.12); color: var(--blue-glow);
  border: 1px solid rgba(59,130,246,0.25);
}

/* ─── FORMATION ──────────────────────────────────────────────── */
.timeline {
  position: relative; max-width: 900px; margin: 0 auto;
}
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 1px; background: linear-gradient(to bottom, transparent, var(--border-glass) 10%, var(--border-glass) 90%, transparent);
  transform: translateX(-50%);
}
.timeline-item {
  display: flex; justify-content: flex-end;
  padding-right: calc(50% + 40px);
  margin-bottom: 48px; position: relative;
}
.timeline-item.timeline-right {
  justify-content: flex-start;
  padding-right: 0; padding-left: calc(50% + 40px);
}
.timeline-dot {
  position: absolute; left: 50%; top: 24px;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--bg-mid); border: 2px solid var(--border-glass);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.9rem;
  transform: translateX(-50%); z-index: 2;
  transition: all var(--transition-base);
}
.timeline-dot.major-dot { border-color: var(--blue-electric); color: var(--blue-bright); background: rgba(30,86,255,0.1); }
.timeline-dot.cert-dot { border-color: #a78bfa; color: #a78bfa; background: rgba(167,139,250,0.08); }
.timeline-dot.soft-dot { border-color: #34d399; color: #34d399; background: rgba(52,211,153,0.08); }

.timeline-card {
  max-width: 380px; padding: 24px;
  transition: all var(--transition-base);
}
.timeline-card:hover { transform: translateY(-4px); border-color: rgba(59,130,246,0.3); }
.timeline-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 12px; flex-wrap: wrap;
}
.timeline-badge {
  padding: 4px 12px; border-radius: var(--radius-full);
  background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.25);
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--blue-glow);
}
.timeline-type { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.timeline-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.timeline-card h4 { font-size: 0.84rem; color: var(--blue-glow); margin-bottom: 10px; }
.timeline-card h4 a { transition: opacity var(--transition-base); }
.timeline-card h4 a:hover { opacity: 0.7; }
.timeline-card p { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; }
.timeline-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.timeline-tags span {
  padding: 4px 10px; border-radius: var(--radius-full);
  font-size: 0.7rem; color: var(--text-muted);
  background: rgba(255,255,255,0.04); border: 1px solid var(--border-subtle);
}

/* ─── RESEARCH ───────────────────────────────────────────────── */
.research-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.research-card {
  padding: 28px; border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass); background: var(--bg-glass);
  transition: all var(--transition-base);
}
.research-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59,130,246,0.3);
  box-shadow: var(--shadow-md), var(--shadow-blue);
}
.research-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.research-icon {
  width: 46px; height: 46px; border-radius: var(--radius-md);
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright); font-size: 1.1rem;
}
.research-type {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted);
  padding: 4px 10px; border-radius: var(--radius-full);
  background: rgba(255,255,255,0.04); border: 1px solid var(--border-subtle);
}
.research-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 10px; line-height: 1.4; }
.research-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.65; margin-bottom: 16px; }
.research-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.research-meta span {
  display: flex; align-items: center; gap: 5px;
  font-size: 0.78rem; color: var(--text-muted);
}
.research-meta i { color: var(--blue-glow); font-size: 0.7rem; }
.research-themes { display: flex; flex-wrap: wrap; gap: 6px; }
.research-themes span {
  padding: 4px 12px; border-radius: var(--radius-full);
  font-size: 0.72rem; color: var(--blue-glow);
  background: rgba(59,130,246,0.08); border: 1px solid rgba(59,130,246,0.2);
}

/* ─── LEARNING ───────────────────────────────────────────────── */
.learning-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px; margin-bottom: 60px;
}
.learning-card {
  border-radius: var(--radius-lg); border: 1px solid var(--border-glass);
  background: var(--bg-glass); overflow: hidden;
  display: flex; flex-direction: column;
  transition: all var(--transition-base); text-decoration: none;
}
.learning-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59,130,246,0.3);
  box-shadow: var(--shadow-lg);
}
.learning-card-header {
  height: 160px; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(0,0,0,0.3);
}
.learning-img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.5) saturate(0.6);
  transition: transform var(--transition-slow), filter var(--transition-slow);
}
.learning-card:hover .learning-img { transform: scale(1.05); filter: brightness(0.6) saturate(0.8); }
.learning-badge {
  position: absolute; top: 12px; right: 12px;
  padding: 5px 12px; border-radius: var(--radius-full);
  font-size: 0.72rem; font-weight: 600; color: var(--white);
  background: rgba(var(--lc, 59,130,246), 0.8);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
}
.learning-card-body { padding: 20px; flex: 1; }
.learning-card-body h3 { font-size: 0.98rem; font-weight: 600; margin-bottom: 8px; line-height: 1.35; }
.learning-card-body p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.6; }
.learning-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.learning-meta span {
  display: flex; align-items: center; gap: 5px;
  font-size: 0.75rem; color: var(--text-muted);
}
.learning-meta i { color: var(--blue-glow); }
.learning-card-footer {
  padding: 14px 20px; border-top: 1px solid var(--border-subtle);
}
.learning-cta {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem; font-weight: 600; color: var(--blue-glow);
  transition: gap var(--transition-spring);
}
.learning-card:hover .learning-cta { gap: 12px; }

.learning-platforms { text-align: center; }
.learning-platforms h3 {
  font-size: 1.1rem; font-weight: 600; color: var(--text-secondary);
  margin-bottom: 28px;
}
.platforms-grid {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 20px;
}
.platform-item {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 20px 24px; border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass); background: var(--bg-glass);
  transition: all var(--transition-base); cursor: default;
}
.platform-item:hover { border-color: rgba(59,130,246,0.3); transform: translateY(-4px); }
.platform-icon {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: rgba(59,130,246,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright); font-size: 1.2rem;
}
.platform-item span { font-size: 0.82rem; color: var(--text-secondary); font-weight: 500; }

/* ─── CONTACT ────────────────────────────────────────────────── */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: clamp(30px, 5vw, 60px); align-items: start;
}
.contact-info-card { padding: 32px; }
.contact-info-card h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 12px; }
.contact-info-card > p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.65; }

.contact-items { display: flex; flex-direction: column; gap: 4px; margin-bottom: 28px; }
.contact-item {
  display: flex; gap: 14px; align-items: center;
  padding: 14px 16px; border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-base);
}
.contact-item:hover { background: rgba(59,130,246,0.06); border-color: rgba(59,130,246,0.2); }
.contact-item-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright); flex-shrink: 0;
}
.contact-item-label { display: block; font-size: 0.72rem; color: var(--text-muted); }
.contact-item-value { display: block; font-size: 0.88rem; color: var(--text-primary); font-weight: 500; }

.contact-availability {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px; border-radius: var(--radius-full);
  background: rgba(34,197,94,0.07); border: 1px solid rgba(34,197,94,0.2);
  font-size: 0.85rem; color: #4ade80; font-weight: 500;
}

.contact-form { padding: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.form-group label {
  font-size: 0.82rem; font-weight: 500; color: var(--text-secondary);
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 13px 16px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  font-size: 0.9rem; color: var(--text-primary);
  transition: all var(--transition-base);
  outline: none; appearance: none;
}
.form-group select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.form-group select option { background: var(--bg-mid); color: var(--text-primary); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: rgba(59,130,246,0.5);
  background: rgba(59,130,246,0.04);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-error { font-size: 0.75rem; color: #f87171; min-height: 1em; }
.form-group.error input, .form-group.error textarea, .form-group.error select {
  border-color: rgba(248,113,113,0.5);
  box-shadow: 0 0 0 3px rgba(248,113,113,0.08);
}
.form-submit { width: 100%; justify-content: center; padding: 15px; font-size: 1rem; }
.form-success {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px; border-radius: var(--radius-md);
  background: rgba(34,197,94,0.08); border: 1px solid rgba(34,197,94,0.25);
  color: #4ade80; font-size: 0.9rem; margin-top: 16px;
}
.form-success i { font-size: 1.2rem; }

/* ─── FOOTER ─────────────────────────────────────────────────── */
#footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--border-subtle);
  background: rgba(5, 11, 24, 0.95);
  padding: clamp(50px, 8vw, 80px) 0 0;
}
.footer-container {
  max-width: var(--container-w); margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: clamp(24px, 4vw, 60px); margin-bottom: clamp(40px, 6vw, 70px);
}
.footer-logo {
  font-family: var(--font-display); font-size: 2rem; font-weight: 800;
  color: var(--white); margin-bottom: 14px; display: flex; align-items: center; gap: 4px;
}
.footer-brand p { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 8px; }
.footer-location { display: flex; align-items: center; gap: 6px; }
.footer-location i { color: var(--blue-bright); }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.9rem;
  transition: all var(--transition-base);
}
.footer-social a:hover { color: var(--white); border-color: var(--blue-bright); background: rgba(59,130,246,0.12); }

.footer-nav h4, .footer-resources h4, .footer-cv h4 {
  font-size: 0.82rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.12em; color: var(--text-muted);
  margin-bottom: 18px;
}
.footer-nav ul, .footer-resources ul { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a, .footer-resources a {
  font-size: 0.88rem; color: var(--text-secondary);
  transition: color var(--transition-base);
}
.footer-nav a:hover, .footer-resources a:hover { color: var(--blue-glow); }

.footer-cv-embed {
  border-radius: var(--radius-md); overflow: hidden;
  border: 1px solid var(--border-glass);
  margin-bottom: 12px;
}
.footer-cv-embed iframe {
  width: 100%; height: 200px; border: none; display: block;
  filter: invert(0.9) hue-rotate(180deg);
}
.footer-cv-btn { width: 100%; justify-content: center; }

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 24px 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); }

/* ─── SCROLL TO TOP ──────────────────────────────────────────── */
#scrollTopBtn {
  position: fixed; bottom: 28px; right: 28px; z-index: 500;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--gradient-blue);
  color: var(--white); font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(30,86,255,0.4);
  opacity: 0; transform: translateY(20px);
  transition: all var(--transition-spring);
  border: none;
}
#scrollTopBtn.visible { opacity: 1; transform: translateY(0); }
#scrollTopBtn:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(30,86,255,0.6); }

/* ─── AOS OVERRIDES ──────────────────────────────────────────── */
[data-aos] { transition-duration: 0.7s !important; }

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-cv { grid-column: 1 / -1; }
  .footer-cv-embed iframe { height: 240px; }
}

@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .about-photo-frame { width: min(240px, 80%); margin: 0 auto; }
  .photo-badge { right: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 24px; }
  .timeline-item, .timeline-item.timeline-right {
    padding-left: 70px; padding-right: 0; justify-content: flex-start;
  }
  .timeline-dot { left: 24px; transform: translateX(-50%); }
  .timeline-card { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-cv { display: none; }
}

@media (max-width: 640px) {
  :root { --nav-h: 60px; }
  .hero-stats { gap: 24px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary, .hero-actions .btn-ghost { width: 100%; justify-content: center; }
  .form-row { grid-template-columns: 1fr; }
  .projects-grid, .research-grid { grid-template-columns: 1fr; }
  .skills-tabs { gap: 6px; }
  .tab-btn { font-size: 0.8rem; padding: 8px 14px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-name { font-size: clamp(2.5rem, 12vw, 3.2rem); }
  .skill-cards-grid { grid-template-columns: 1fr; }
  .soft-skills-grid { grid-template-columns: 1fr; }
  .learning-grid { grid-template-columns: 1fr; }
}

/* ─── PRINT ──────────────────────────────────────────────────── */
@media print {
  #navbar, #loader, .cursor-dot, .cursor-ring, #particles-js,
  #scrollTopBtn, .hero-scroll { display: none !important; }
  body { background: white !important; color: black !important; }
  section { padding: 20px 0 !important; }
}