/* =============================================
   ISSA DIALLO - CYBERSECURITY PORTFOLIO
   Dark Hacker Aesthetic
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&family=Share+Tech+Mono&display=swap');

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #080c08;
  --bg2:       #0d130d;
  --bg3:       #111811;
  --green:     #00ff41;
  --green-dim: #00b32c;
  --green-glow:#00ff4133;
  --cyan:      #00e5ff;
  --red:       #ff0033;
  --text:      #c8d8c8;
  --text-dim:  #5a7a5a;
  --border:    #1a2e1a;
  --font-mono: 'JetBrains Mono', 'Share Tech Mono', 'Courier New', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- Scanline overlay ---- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.05) 2px,
    rgba(0,0,0,0.05) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ---- Selection ---- */
::selection { background: var(--green); color: #000; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--green-dim); border-radius: 3px; }

/* ---- Typography ---- */
h1, h2, h3, h4 { color: var(--green); font-weight: 700; letter-spacing: 0.05em; }
h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.3rem, 3vw, 2rem); }
h3 { font-size: 1.1rem; }
a  { color: var(--green); text-decoration: none; transition: color .2s, text-shadow .2s; }
a:hover { color: #fff; text-shadow: 0 0 8px var(--green); }
p  { color: var(--text); margin-bottom: 1rem; }

/* ---- Utility ---- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 80px 0; }
.section-title {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .2em;
  margin-bottom: 0.4rem;
}
.section-title::before { content: '// '; color: var(--green); }
.section-heading {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  color: var(--green);
  margin-bottom: 2.5rem;
  text-shadow: 0 0 20px var(--green-glow);
}
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 60px 0;
}

/* ---- Glitch text ---- */
.glitch {
  position: relative;
  display: inline-block;
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}
.glitch::before {
  color: var(--cyan);
  clip-path: polygon(0 30%, 100% 30%, 100% 50%, 0 50%);
  animation: glitch-1 3s infinite linear;
}
.glitch::after {
  color: var(--red);
  clip-path: polygon(0 60%, 100% 60%, 100% 80%, 0 80%);
  animation: glitch-2 3s infinite linear;
}
@keyframes glitch-1 {
  0%,90%,100% { transform: none; opacity: 0; }
  91%,92% { transform: translateX(-3px); opacity: 0.8; }
  93%,94% { transform: translateX(3px); opacity: 0.8; }
}
@keyframes glitch-2 {
  0%,85%,100% { transform: none; opacity: 0; }
  86%,87% { transform: translateX(3px); opacity: 0.7; }
  88%,89% { transform: translateX(-3px); opacity: 0.7; }
}

/* ---- Terminal cursor blink ---- */
.cursor::after {
  content: '_';
  animation: blink .8s step-end infinite;
  color: var(--green);
}
@keyframes blink { 50% { opacity: 0; } }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(8,12,8,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  height: 64px;
  display: flex;
  align-items: center;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.navbar-brand {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
  text-shadow: 0 0 10px var(--green-glow);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.navbar-brand span { color: var(--text-dim); font-weight: 400; }
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}
.navbar-nav a {
  display: block;
  padding: .4rem 1rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-dim);
  border: 1px solid transparent;
  border-radius: 2px;
  transition: all .2s;
}
.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--green);
  border-color: var(--green-dim);
  text-shadow: 0 0 8px var(--green-glow);
  background: var(--green-glow);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: .5rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--green);
  transition: all .3s;
}
.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); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .navbar-nav {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(8,12,8,0.98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    transform: translateY(-120%);
    transition: transform .3s;
  }
  .navbar-nav.open { transform: none; }
  .navbar-nav a { padding: .8rem 2rem; }
}

/* ============================================
   HERO SECTION (index)
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  position: relative;
  overflow: hidden;
}
/* Matrix rain canvas background */
.hero canvas {
  position: absolute;
  inset: 0;
  opacity: .07;
  z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-tag {
  display: inline-block;
  font-size: .75rem;
  color: var(--green);
  border: 1px solid var(--green-dim);
  padding: .25rem .75rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}
.hero-subtitle {
  font-size: clamp(.9rem, 2vw, 1.2rem);
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 2.5rem;
}
.hero-certs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 2.5rem;
}
.cert-badge {
  font-size: .7rem;
  background: var(--bg3);
  border: 1px solid var(--green-dim);
  color: var(--green);
  padding: .2rem .6rem;
  border-radius: 2px;
  letter-spacing: .05em;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.5rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  transition: all .2s;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--green);
  color: #000;
}
.btn-primary:hover {
  background: #fff;
  color: #000;
  box-shadow: 0 0 20px var(--green);
  text-shadow: none;
}
.btn-outline {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--green-dim);
}
.btn-outline:hover {
  background: var(--green-glow);
  border-color: var(--green);
  box-shadow: 0 0 15px var(--green-glow);
  color: var(--green);
  text-shadow: 0 0 8px var(--green);
}

/* ============================================
   ABOUT SECTION (index)
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.about-photo-wrap {
  position: relative;
}
.about-photo {
  width: 100%;
  max-width: 280px;
  border: 2px solid var(--green-dim);
  filter: grayscale(30%);
  display: block;
}
.about-photo-wrap::before {
  content: '';
  position: absolute;
  inset: -6px;
  border: 1px solid var(--green-dim);
  opacity: .3;
  pointer-events: none;
}
.about-photo-wrap::after {
  content: '';
  position: absolute;
  top: 10px; left: 10px;
  width: 100%; max-width: 280px; height: 100%;
  border: 1px solid var(--green-dim);
  opacity: .2;
  pointer-events: none;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
.stat-box {
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 1rem;
  text-align: center;
}
.stat-box .num { font-size: 1.8rem; color: var(--green); font-weight: 700; }
.stat-box .lbl { font-size: .7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .1em; }

/* Skills bars */
.skill-row { margin-bottom: 1rem; }
.skill-label {
  display: flex;
  justify-content: space-between;
  font-size: .78rem;
  color: var(--text);
  margin-bottom: .3rem;
}
.skill-bar {
  height: 4px;
  background: var(--bg3);
  border-radius: 2px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green-dim), var(--green));
  border-radius: 2px;
  width: 0;
  transition: width 1.5s cubic-bezier(.22,1,.36,1);
}

/* ============================================
   CARDS
   ============================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 1.8rem;
  border-radius: 2px;
  transition: border-color .2s, box-shadow .2s, transform .2s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--green);
  opacity: 0;
  transition: opacity .2s;
}
.card:hover {
  border-color: var(--green-dim);
  box-shadow: 0 0 20px var(--green-glow);
  transform: translateY(-2px);
}
.card:hover::before { opacity: 1; }
.card-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  display: block;
}
.card h3 { margin-bottom: .5rem; font-size: 1rem; color: var(--green); }
.card p  { font-size: .82rem; color: var(--text-dim); margin: 0; }

/* ============================================
   TERMINAL BLOCK
   ============================================ */
.terminal {
  background: #050905;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  font-size: .82rem;
}
.terminal-bar {
  background: var(--bg3);
  padding: .6rem 1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  border-bottom: 1px solid var(--border);
}
.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.terminal-dot:nth-child(1) { background: #ff5f57; }
.terminal-dot:nth-child(2) { background: #febc2e; }
.terminal-dot:nth-child(3) { background: #28c840; }
.terminal-title {
  margin-left: .5rem;
  font-size: .7rem;
  color: var(--text-dim);
  letter-spacing: .1em;
}
.terminal-body { padding: 1.2rem 1.5rem; line-height: 1.9; }
.terminal-body .prompt { color: var(--green); }
.terminal-body .cmd   { color: #fff; }
.terminal-body .out   { color: var(--text-dim); }
.terminal-body .hl    { color: var(--cyan); }

/* ============================================
   TIMELINE (experience)
   ============================================ */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: .5rem; top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 2.5rem; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.63rem; top: .4rem;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}
.timeline-date {
  font-size: .72rem;
  color: var(--green-dim);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: .2rem;
}
.timeline-role { font-size: .95rem; color: #fff; font-weight: 700; margin-bottom: .2rem; }
.timeline-company { font-size: .8rem; color: var(--text-dim); margin-bottom: .5rem; }
.timeline-desc { font-size: .82rem; color: var(--text-dim); }

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.form-group { margin-bottom: 1.2rem; }
.form-label {
  display: block;
  font-size: .75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .4rem;
}
.form-label::before { content: '> '; color: var(--green); }
.form-control {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .85rem;
  padding: .7rem 1rem;
  border-radius: 2px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.form-control:focus {
  border-color: var(--green-dim);
  box-shadow: 0 0 10px var(--green-glow);
}
textarea.form-control { resize: vertical; min-height: 140px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.contact-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: .1rem;
}
.contact-info-item h4 { font-size: .8rem; color: var(--text-dim); font-weight: 400; margin-bottom: .2rem; }
.contact-info-item a, .contact-info-item p { font-size: .9rem; margin: 0; }

/* ============================================
   SOCIAL LINKS
   ============================================ */
.social-links { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1rem; }
.social-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: .35rem .75rem;
  border-radius: 2px;
  transition: all .2s;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.social-link:hover {
  color: var(--green);
  border-color: var(--green-dim);
  background: var(--green-glow);
  text-shadow: 0 0 6px var(--green);
}

/* ============================================
   PORTFOLIO
   ============================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.portfolio-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.portfolio-card:hover {
  border-color: var(--green-dim);
  box-shadow: 0 0 25px var(--green-glow);
  transform: translateY(-3px);
}
.portfolio-card-header {
  padding: .7rem 1rem;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.portfolio-card-dots { display: flex; gap: 5px; }
.portfolio-card-dots span {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
}
.portfolio-card-dots span:first-child { background: var(--green-dim); }
.portfolio-card-tag {
  font-size: .65rem;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: .1em;
  border: 1px solid var(--green-dim);
  padding: .15rem .5rem;
  border-radius: 2px;
}
.portfolio-card-body { padding: 1.5rem; }
.portfolio-card-body h3 { margin-bottom: .5rem; font-size: .95rem; }
.portfolio-card-body p { font-size: .8rem; color: var(--text-dim); margin-bottom: 1rem; }
.portfolio-tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.ptag {
  font-size: .65rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: .15rem .5rem;
  border-radius: 2px;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  font-size: .75rem;
  color: var(--text-dim);
}
footer .green { color: var(--green); }
footer a { color: var(--text-dim); }
footer a:hover { color: var(--green); }

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding: 140px 0 60px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg2) 0%, var(--bg) 100%);
}
.page-hero .breadcrumb {
  font-size: .72rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: .15em;
}
.page-hero .breadcrumb a { color: var(--green); }
.page-hero .breadcrumb a::after { content: ' / '; color: var(--text-dim); }
.page-hero h1 { margin-bottom: .5rem; }
.page-hero .subtitle { color: var(--text-dim); font-size: .9rem; }

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.toast {
  position: fixed;
  bottom: 2rem; right: 2rem;
  background: var(--bg2);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-size: .82rem;
  padding: .8rem 1.5rem;
  border-radius: 2px;
  box-shadow: 0 0 20px var(--green-glow);
  transform: translateY(100px);
  opacity: 0;
  transition: all .4s;
  z-index: 9000;
}
.toast.show { transform: none; opacity: 1; }

/* ============================================
   MISC UTILS
   ============================================ */
.text-green  { color: var(--green); }
.text-dim    { color: var(--text-dim); }
.text-cyan   { color: var(--cyan); }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 2rem; }
.text-center { text-align: center; }

/* Fade-in on scroll */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s, transform .7s;
}
.fade-up.visible { opacity: 1; transform: none; }