/* ============================================================
   ABU SALEH — Futuristic Portfolio CSS
   Theme: Dark Cyberpunk / Neon Grid
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Rajdhani:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

/* ── VARIABLES ── */
:root {
  --bg-primary: #030712;
  --bg-secondary: #060f1e;
  --bg-card: #0a1628;
  --bg-card-hover: #0f1f3d;
  --neon-cyan: #00f5ff;
  --neon-green: #39ff14;
  --neon-purple: #bf00ff;
  --neon-orange: #ff6b00;
  --text-primary: #e8f4f8;
  --text-secondary: #8ab4c4;
  --text-dim: #4a7a8a;
  --border-glow: rgba(0, 245, 255, 0.2);
  --border-active: rgba(0, 245, 255, 0.7);
  --grid-line: rgba(0, 245, 255, 0.04);
  --font-display: 'Orbitron', monospace;
  --font-body: 'Rajdhani', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}

/* ── CUSTOM CURSOR ── */
.cursor {
  position: fixed;
  width: 12px; height: 12px;
  background: var(--neon-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease, width 0.2s, height 0.2s, background 0.2s;
  mix-blend-mode: screen;
}

.cursor-ring {
  position: fixed;
  width: 36px; height: 36px;
  border: 1.5px solid var(--neon-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, width 0.3s, height 0.3s, opacity 0.3s;
  opacity: 0.5;
}

body:hover .cursor { opacity: 1; }

/* ── GRID BACKGROUND ── */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,245,255,0.06) 0%, transparent 60%),
              radial-gradient(ellipse 60% 40% at 80% 80%, rgba(191,0,255,0.05) 0%, transparent 50%);
}

/* ── NOISE TEXTURE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.4;
}

/* ── LAYOUT ── */
main { position: relative; z-index: 2; }
section { padding: 100px 0; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ── NAVIGATION ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-glow);
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--neon-cyan);
  letter-spacing: 0.15em;
  text-decoration: none;
  text-shadow: 0 0 20px rgba(0,245,255,0.6);
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  transition: color 0.3s;
}

.nav-links a::before {
  content: '> ';
  color: var(--neon-cyan);
  opacity: 0;
  transition: opacity 0.3s;
}

.nav-links a:hover { color: var(--neon-cyan); }
.nav-links a:hover::before { opacity: 1; }

/* ── SECTION HEADER ── */
.section-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 60px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--neon-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.7;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--neon-cyan) 0%, transparent 100%);
  opacity: 0.3;
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 60px;
  position: relative;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--neon-cyan);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0.8;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-name span {
  color: var(--neon-cyan);
  text-shadow: 0 0 40px rgba(0,245,255,0.5), 0 0 80px rgba(0,245,255,0.2);
}

.hero-title {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.8;
  max-width: 460px;
  margin-bottom: 44px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 28px;
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  background: transparent;
  position: relative;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
  transition: all 0.3s;
  cursor: none;
  display: inline-block;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--neon-cyan);
  opacity: 0;
  transition: opacity 0.3s;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn:hover { color: var(--bg-primary); }
.btn:hover::before { opacity: 1; }
.btn span { position: relative; z-index: 1; }

.btn-ghost {
  border-color: var(--text-dim);
  color: var(--text-secondary);
}
.btn-ghost::before { background: var(--text-secondary); }
.btn-ghost:hover { color: var(--bg-primary); }

/* ── HERO RIGHT — STAT PANEL ── */
.hero-panel {
  display: grid;
  grid-template-rows: auto auto;
  gap: 20px;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
  padding: 24px 20px;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: border-color 0.3s, background 0.3s;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0; right: 14px;
  width: 14px; height: 1px;
  background: var(--neon-cyan);
  transform-origin: right;
  transform: rotate(45deg) translateY(-7px);
}

.stat-card:hover {
  border-color: var(--border-active);
  background: var(--bg-card-hover);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 0 0 24px rgba(0,245,255,0.5);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Terminal box */
.terminal-box {
  border: 1px solid var(--border-glow);
  background: rgba(0,0,0,0.5);
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--neon-green);
  position: relative;
  line-height: 1.9;
}

.terminal-box::before {
  content: '● ● ●';
  display: block;
  color: var(--text-dim);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  margin-bottom: 14px;
  opacity: 0.5;
}

.terminal-box .t-dim { color: var(--text-dim); }
.terminal-box .t-cyan { color: var(--neon-cyan); }
.terminal-box .t-purple { color: var(--neon-purple); }

/* ── SKILLS ── */
#skills { background: transparent; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.skill-category {
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
  padding: 30px 28px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s, transform 0.3s;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.skill-category:hover {
  border-color: rgba(0,245,255,0.4);
  transform: translateY(-4px);
}

.skill-category:hover::before { opacity: 1; }

.skill-cat-icon {
  font-size: 1.8rem;
  margin-bottom: 14px;
  display: block;
}

.skill-cat-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--neon-cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  padding: 5px 12px;
  border: 1px solid rgba(0,245,255,0.2);
  color: var(--text-secondary);
  background: rgba(0,245,255,0.04);
  transition: all 0.2s;
}

.skill-tag:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0,245,255,0.08);
}

/* ── PROJECTS ── */
#projects { background: transparent; }

.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.project-card {
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: all 0.4s;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, rgba(0,245,255,0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}

.project-card:hover {
  border-color: rgba(0,245,255,0.5);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px rgba(0,245,255,0.08);
}

.project-card:hover::after { opacity: 1; }

.project-num {
  font-family: var(--font-display);
  font-size: 0.6rem;
  color: var(--neon-cyan);
  letter-spacing: 0.2em;
  opacity: 0.5;
  margin-bottom: 16px;
}

.project-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.project-url {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--neon-cyan);
  text-decoration: none;
  letter-spacing: 0.05em;
  opacity: 0.7;
  display: inline-block;
  margin-bottom: 16px;
  transition: opacity 0.2s;
}

.project-url:hover { opacity: 1; }

.project-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 400;
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stack-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  border: 1px solid rgba(57,255,20,0.25);
  color: var(--neon-green);
  background: rgba(57,255,20,0.04);
}

/* ── EXPERIENCE ── */
#experience { background: transparent; }

.experience-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.exp-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  position: relative;
}

.exp-item + .exp-item { margin-top: 40px; }

.exp-timeline {
  padding-right: 48px;
  position: relative;
}

.exp-timeline::after {
  content: '';
  position: absolute;
  top: 8px; right: 0;
  width: 1px;
  bottom: -50px;
  background: linear-gradient(180deg, var(--neon-cyan) 0%, rgba(0,245,255,0.1) 80%, transparent 100%);
  opacity: 0.3;
}

.exp-item:last-child .exp-timeline::after { display: none; }

.exp-dot {
  position: absolute;
  top: 6px; right: -5px;
  width: 11px; height: 11px;
  border: 2px solid var(--neon-cyan);
  background: var(--bg-primary);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0,245,255,0.6);
}

.exp-period {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--neon-cyan);
  letter-spacing: 0.1em;
  opacity: 0.7;
  padding-top: 4px;
}

.exp-content {
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
  padding: 28px 32px;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color 0.3s, background 0.3s;
}

.exp-content:hover {
  border-color: rgba(0,245,255,0.35);
  background: var(--bg-card-hover);
}

.exp-role {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.exp-company {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--neon-cyan);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  opacity: 0.8;
}

.exp-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exp-bullets li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}

.exp-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--neon-cyan);
  font-size: 0.75rem;
  opacity: 0.6;
}

/* ── EDUCATION ── */
#education { background: transparent; }

.edu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.edu-card {
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
  padding: 28px 24px;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: all 0.3s;
}

.edu-card:hover {
  border-color: rgba(0,245,255,0.4);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.edu-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  display: block;
}

.edu-degree {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.edu-inst {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--neon-cyan);
  letter-spacing: 0.12em;
  opacity: 0.7;
}

/* ── CONTACT ── */
#contact { background: transparent; }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 20px; }

.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.15;
  margin-bottom: 8px;
}

.contact-heading span { color: var(--neon-cyan); text-shadow: 0 0 30px rgba(0,245,255,0.4); }

.contact-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 10px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  padding: 14px 20px;
  border: 1px solid var(--border-glow);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all 0.3s;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.contact-link:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0,245,255,0.05);
  transform: translateX(6px);
}

.contact-link-icon {
  font-size: 1rem;
  opacity: 0.7;
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.form-input, .form-textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.3s;
  resize: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 1px rgba(0,245,255,0.2), inset 0 0 20px rgba(0,245,255,0.02);
}

.form-textarea { min-height: 130px; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border-glow);
  padding: 32px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2;
}

.footer-text {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.footer-text span { color: var(--neon-cyan); }

/* ── SCAN LINE ANIMATION ── */
@keyframes scanline {
  0% { top: 0; }
  100% { top: 100%; }
}

.scanline {
  position: fixed;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,245,255,0.08), transparent);
  z-index: 3;
  pointer-events: none;
  animation: scanline 8s linear infinite;
}

/* ── FADE IN ANIMATION ── */
@keyframes pulseDot {
  0%, 100% { opacity: 0.2; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glitch {
  0%, 100% { clip-path: inset(0 0 100% 0); }
  10% { clip-path: inset(10% 0 80% 0); transform: skewX(-1deg); }
  20% { clip-path: inset(50% 0 30% 0); transform: skewX(1deg); }
  30% { clip-path: inset(70% 0 5% 0); }
  40%, 90% { clip-path: inset(0 0 100% 0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 0.7s ease forwards;
}

.fade-up:nth-child(1) { animation-delay: 0.1s; }
.fade-up:nth-child(2) { animation-delay: 0.2s; }
.fade-up:nth-child(3) { animation-delay: 0.3s; }
.fade-up:nth-child(4) { animation-delay: 0.4s; }
.fade-up:nth-child(5) { animation-delay: 0.5s; }

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .exp-item { grid-template-columns: 1fr; }
  .exp-timeline { padding: 0 0 20px 0; }
  .exp-timeline::after { display: none; }
}

@media (max-width: 600px) {
  nav { padding: 16px 20px; }
  .nav-links { gap: 18px; }
  .container { padding: 0 20px; }
  section { padding: 70px 0; }
  .skills-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 12px; text-align: center; }
  body { cursor: auto; }
  .cursor, .cursor-ring { display: none; }
}