/* ============================================
   KHALID ALSHEHRI — PORTFOLIO
   styles/main.css
   ============================================ */

/* ---------- VARIABLES ---------- */
:root {
  --black:       #050507;
  --blue:        #00aaff;
  --blue-dim:    #0066cc;
  --blue-glow:   rgba(0, 170, 255, 0.14);
  --white:       #f0f4ff;
  --gray:        #8899bb;
  --border:      rgba(0, 170, 255, 0.2);
  --border-sub:  rgba(0, 170, 255, 0.1);
  --font-display: 'Syne', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-mono);
  overflow-x: hidden;
  cursor: none;
}
a { color: inherit; }
img { display: block; max-width: 100%; }

/* ---------- GRID BG ---------- */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,170,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,170,255,0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ---------- CURSOR ---------- */
.cursor {
  position: fixed; width: 10px; height: 10px;
  background: var(--blue); border-radius: 50%;
  pointer-events: none; z-index: 9999;
  mix-blend-mode: screen;
}
.cursor-ring {
  position: fixed; width: 36px; height: 36px;
  border: 1px solid var(--blue); border-radius: 50%;
  pointer-events: none; z-index: 9998;
  transition: width 0.3s, height 0.3s, opacity 0.3s;
  opacity: 0.45;
}

/* ---------- NAV ---------- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.3rem 4rem;
  background: rgba(5, 5, 7, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-sub);
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 800; font-size: 1.05rem;
  color: var(--blue); letter-spacing: 0.08em;
  text-decoration: none;
}
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  color: var(--gray); text-decoration: none;
  font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--blue); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 22px; height: 1.5px;
  background: var(--gray); transition: all 0.3s;
}

/* ---------- HERO ---------- */
#hero {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 4rem;
  overflow: hidden;
}
.hero-tag {
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: 10px;
}
.hero-tag::before {
  content: ''; display: block;
  width: 30px; height: 1px; background: var(--blue);
}
h1 {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 7.5vw, 7.5rem);
  font-weight: 800; line-height: 1;
  letter-spacing: -0.02em;
}
h1 span { color: var(--blue); }
.hero-sub {
  font-size: clamp(0.8rem, 1.4vw, 0.95rem);
  color: var(--gray); margin-top: 1.8rem;
  max-width: 520px; line-height: 1.85;
}
.hero-btns {
  display: flex; gap: 1rem; margin-top: 2.8rem; flex-wrap: wrap;
}
.hero-code {
  position: absolute; bottom: 3rem; left: 4rem;
  font-size: 0.67rem; color: rgba(0,170,255,0.35);
  letter-spacing: 0.06em;
}
.hero-graphic {
  position: absolute; right: -80px; top: 50%; transform: translateY(-50%);
  width: 500px; height: 500px;
  border: 1px solid var(--border); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  animation: spin-slow 32s linear infinite;
}
.hero-graphic::before {
  content: ''; position: absolute;
  width: 360px; height: 360px;
  border: 1px dashed rgba(0,170,255,0.12); border-radius: 50%;
  animation: spin-slow 16s linear infinite reverse;
}
.hero-graphic::after {
  content: ''; position: absolute;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(0,170,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.orbit-dot {
  position: absolute; width: 8px; height: 8px;
  background: var(--blue); border-radius: 50%;
  box-shadow: 0 0 12px var(--blue);
}
@keyframes spin-slow { to { transform: translateY(-50%) rotate(360deg); } }

/* ---------- BUTTONS ---------- */
.btn {
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.85rem 1.8rem; text-decoration: none;
  border-radius: 3px; transition: all 0.25s;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary {
  background: var(--blue); color: var(--black); font-weight: 500;
  border: none;
}
.btn-primary:hover {
  background: #33bbff;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,170,255,0.35);
}
.btn-outline {
  border: 1px solid var(--border); color: var(--blue);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--blue); background: var(--blue-glow);
  transform: translateY(-2px);
}

/* ---------- SECTION COMMON ---------- */
section {
  position: relative; z-index: 1;
  padding: 6.5rem 4rem;
  border-top: 1px solid var(--border-sub);
}
.sec-label {
  font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 0.9rem;
  display: flex; align-items: center; gap: 10px;
}
.sec-label::before {
  content: ''; width: 22px; height: 1px; background: var(--blue);
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800; letter-spacing: -0.02em;
  margin-bottom: 3rem; line-height: 1.1;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
.about-text p {
  color: var(--gray); line-height: 1.95; font-size: 0.88rem; margin-bottom: 1.1rem;
}
.about-text p strong { color: var(--white); font-weight: 500; }
.stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; border: 1px solid var(--border); border-radius: 4px;
  overflow: hidden; margin-top: 2.5rem;
}
.stat { padding: 1.4rem; background: rgba(0,170,255,0.025); text-align: center; }
.stat .n {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 800;
  color: var(--blue); line-height: 1;
}
.stat .l {
  font-size: 0.65rem; color: var(--gray);
  letter-spacing: 0.1em; text-transform: uppercase; margin-top: 5px;
}
.about-side { display: flex; flex-direction: column; gap: 10px; }
.info-card {
  border: 1px solid var(--border-sub); border-radius: 4px;
  padding: 1.1rem 1.4rem;
  background: rgba(0,170,255,0.025);
  transition: border-color 0.2s, background 0.2s;
}
.info-card:hover { border-color: var(--blue); background: var(--blue-glow); }
.info-card .ic-label {
  font-size: 0.62rem; color: var(--blue);
  letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 5px;
}
.info-card .ic-val { font-size: 0.85rem; color: var(--white); }
.availability-dot { color: var(--blue); }

/* ---------- SKILLS ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}
.skill-group {
  border: 1px solid var(--border-sub); border-radius: 4px;
  padding: 1.7rem; background: rgba(0,170,255,0.018);
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}
.skill-group:hover {
  border-color: var(--blue); transform: translateY(-4px);
  background: var(--blue-glow);
}
.skill-group h3 {
  font-family: var(--font-display);
  font-size: 0.9rem; font-weight: 700;
  margin-bottom: 1.1rem; color: var(--blue);
  display: flex; align-items: center; gap: 8px;
  letter-spacing: 0.04em;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
  font-size: 0.68rem; padding: 5px 11px;
  border: 1px solid rgba(0,170,255,0.22); border-radius: 2px;
  color: var(--gray); letter-spacing: 0.07em;
  transition: all 0.2s;
}
.tag:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-glow); }

/* ---------- TIMELINE (events & certs) ---------- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.col-title {
  font-size: 0.7rem; color: var(--gray);
  letter-spacing: 0.14em; text-transform: uppercase;
  margin-bottom: 1.8rem;
}
.timeline { position: relative; padding-left: 1.8rem; }
.timeline::before {
  content: ''; position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px; background: var(--border-sub);
}
.tl-item {
  position: relative; margin-bottom: 2.2rem; padding-left: 1.5rem;
}
.tl-item::before {
  content: ''; position: absolute;
  left: -2.15rem; top: 5px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--black); border: 2px solid var(--blue);
  box-shadow: 0 0 8px rgba(0,170,255,0.5);
}
.tl-year {
  font-size: 0.65rem; color: var(--blue);
  letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 3px;
}
.tl-title {
  font-family: var(--font-display);
  font-size: 0.98rem; font-weight: 700;
  color: var(--white); margin-bottom: 3px;
}
.tl-title a { text-decoration: none; transition: color 0.2s; }
.tl-title a:hover { color: var(--blue); }
.tl-org { font-size: 0.76rem; color: var(--gray); }
.tl-badge {
  display: inline-block; margin-top: 7px;
  font-size: 0.6rem; padding: 3px 9px;
  border: 1px solid var(--blue); border-radius: 2px;
  color: var(--blue); letter-spacing: 0.1em; text-transform: uppercase;
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
.contact-blurb {
  font-size: 0.88rem; color: var(--gray);
  line-height: 1.9; margin-bottom: 2rem;
}
.contact-links { display: flex; flex-direction: column; gap: 10px; }
.contact-link {
  display: flex; align-items: center; gap: 14px;
  padding: 1rem 1.3rem;
  border: 1px solid var(--border-sub); border-radius: 4px;
  color: var(--white); text-decoration: none;
  font-size: 0.8rem; letter-spacing: 0.04em;
  background: rgba(0,170,255,0.02);
  transition: all 0.22s;
}
.contact-link:hover {
  border-color: var(--blue); background: var(--blue-glow);
  color: var(--blue); transform: translateX(6px);
}
.cl-icon { font-size: 0.95rem; width: 18px; text-align: center; }
.contact-form { display: flex; flex-direction: column; gap: 12px; }
.contact-form input,
.contact-form textarea {
  background: rgba(0,170,255,0.025); border: 1px solid var(--border-sub);
  border-radius: 3px; padding: 0.82rem 1rem;
  color: var(--white); font-family: var(--font-mono);
  font-size: 0.8rem; outline: none; resize: none;
  transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--blue); }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--gray); }
.contact-form button {
  cursor: none; font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.88rem 2rem; border: none; border-radius: 3px;
  background: var(--blue); color: var(--black); font-weight: 500;
  transition: all 0.22s; align-self: flex-start;
}
.contact-form button:hover {
  background: #33bbff; transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,170,255,0.3);
}

/* ---------- FOOTER ---------- */
footer {
  z-index: 1; position: relative;
  padding: 1.8rem 4rem;
  border-top: 1px solid var(--border-sub);
  display: flex; justify-content: space-between; align-items: center;
}
footer p { font-size: 0.68rem; color: var(--gray); }
footer span { color: var(--blue); }

/* ---------- ANIMATIONS ---------- */
.fade-up {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: none; }

/* ---------- LOADING ---------- */
#loader {
  position: fixed; inset: 0; z-index: 9990;
  background: var(--black);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 1rem;
  transition: opacity 0.5s ease;
}
#loader.hidden { opacity: 0; pointer-events: none; }
.loader-text {
  font-size: 0.75rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--blue);
}
.loader-bar {
  width: 200px; height: 1px; background: var(--border);
  overflow: hidden; border-radius: 2px;
}
.loader-fill {
  height: 100%; background: var(--blue);
  animation: load-fill 0.8s ease forwards;
}
@keyframes load-fill { from { width: 0; } to { width: 100%; } }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  nav { padding: 1.2rem 1.5rem; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: 60px; left: 0; right: 0;
    background: rgba(5,5,7,0.97);
    padding: 2rem; gap: 1.5rem;
    border-bottom: 1px solid var(--border-sub);
  }
  .nav-toggle { display: flex; }
  #hero { padding: 6rem 1.5rem 3rem; }
  .hero-graphic { display: none; }
  .hero-code { left: 1.5rem; }
  section { padding: 4rem 1.5rem; }
  .about-grid,
  .two-col,
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  footer { flex-direction: column; gap: 6px; text-align: center; padding: 1.5rem; }
  .stat-row { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  h1 { font-size: 2.8rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn { text-align: center; justify-content: center; }
}