/* ======================================================
   PORTFOLIO — styles.css
   Author: Ziyad Bin Hisham
   ====================================================== */

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

:root {
  --bg:        #0a0d14;
  --bg-card:   #111520;
  --bg-card2:  #161b28;
  --border:    rgba(255,255,255,0.07);
  --accent:    #4f9eff;
  --accent2:   #7b5fff;
  --accent-glow: rgba(79,158,255,0.18);
  --text:      #e2e8f0;
  --text-muted:#7a8ba0;
  --text-dim:  #4a5a70;
  --white:     #ffffff;
  --success:   #22c55e;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-head: 'Space Grotesk', 'Inter', sans-serif;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(79,158,255,0.12);
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Utility ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 720px;
  margin-bottom: 56px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  padding: 10px 22px;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 20px rgba(79,158,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(79,158,255,0.45);
}

.btn-primary-sm {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-size: 0.85rem;
  padding: 8px 18px;
  border-radius: 6px;
}
.btn-primary-sm:hover { opacity: 0.9; }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  padding: 6px 0;
  font-size: 0.85rem;
  border-radius: 0;
}
.btn-ghost:hover { gap: 12px; }

.btn-lg { padding: 14px 32px; font-size: 1rem; }

.btn-full { width: 100%; justify-content: center; padding: 14px; font-size: 1rem; }

/* ── Header / Navbar ── */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

#header.scrolled {
  background: rgba(10,13,20,0.92);
  backdrop-filter: blur(16px);
  border-color: var(--border);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 32px;
}

.logo {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}
.logo-bracket { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 auto;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 6px;
  transition: all var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,158,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,158,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
}
.glow-1 { width: 600px; height: 600px; background: var(--accent); top: -200px; right: -200px; }
.glow-2 { width: 400px; height: 400px; background: var(--accent2); bottom: -100px; left: -100px; }

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 860px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(79,158,255,0.1);
  border: 1px solid rgba(79,158,255,0.2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.accent { color: var(--accent); }

.typed-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}
.typed { color: var(--accent2); }
.cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-sub {
  color: var(--text-muted);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  line-height: 1.8;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(8px);
  padding: 20px 0;
  max-width: 680px;
  margin: 0 auto;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 36px;
}
.stat-num {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--white);
}
.stat-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.scroll-down {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  animation: bounce 2s ease-in-out infinite;
  transition: color var(--transition);
}
.scroll-down:hover { color: var(--accent); }
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ── About ── */
.about { background: var(--bg); }

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

.about-text {
  padding-top: 32px;
}

.about-text .lead {
  font-size: 1.1rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}
.about-text strong { color: var(--text); }

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.badge {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(79,158,255,0.08);
  border: 1px solid rgba(79,158,255,0.2);
  color: var(--accent);
}

.exp-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 28px;
  border-left: 2px solid var(--border);
  padding-left: 20px;
}

.exp-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 20px;
}
.exp-item:last-child { padding-bottom: 0; }

.exp-dot {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 6px rgba(79,158,255,0.5);
  flex-shrink: 0;
}

.exp-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.exp-info strong {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}
.exp-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.skills-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.skills-title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 24px;
}

.skill-groups { display: flex; flex-direction: column; gap: 24px; }

.skill-group-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.skill-tags span {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text);
  transition: all var(--transition);
}
.skill-tags span:hover {
  background: rgba(79,158,255,0.1);
  border-color: rgba(79,158,255,0.3);
  color: var(--accent);
}

/* ── Services ── */
.services {
  background: linear-gradient(180deg, var(--bg) 0%, #0d1120 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79,158,255,0.04), transparent);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79,158,255,0.25);
  box-shadow: var(--shadow-glow);
}
.service-card:hover::before { opacity: 1; }

.service-card.featured {
  border-color: rgba(79,158,255,0.35);
  background: var(--bg-card2);
  box-shadow: var(--shadow-glow);
}

.service-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(79,158,255,0.12);
  border: 1px solid rgba(79,158,255,0.25);
  padding: 3px 10px;
  border-radius: 100px;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(79,158,255,0.1);
  border: 1px solid rgba(79,158,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.service-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.35;
}

.service-card > p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.service-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}
.service-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

.service-cta { margin-top: auto; }

/* ── Projects ── */
.projects { background: var(--bg); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--transition);
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79,158,255,0.2);
  box-shadow: var(--shadow-glow);
}
.project-card.large {
  grid-column: span 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto;
  gap: 16px 40px;
}
.project-card.large .project-meta { grid-column: 1; }
.project-card.large h3          { grid-column: 1; }
.project-card.large .project-desc { grid-column: 1; }
.project-card.large .project-detail { grid-column: 2; grid-row: 1 / 4; }
.project-card.large .project-stack { grid-column: 1; }

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(123,95,255,0.1);
  border: 1px solid rgba(123,95,255,0.2);
  color: #a78bfa;
  line-height: 1;
}

.project-card h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.3;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.project-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.detail-block strong {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.detail-block p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.project-stack span {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 5px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* ── Contact ── */
.contact { background: linear-gradient(180deg, var(--bg) 0%, #0d1120 100%); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3,
.contact-form h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 24px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 28px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--transition);
}
.contact-item:not(.no-link):hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--border);
}

.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(79,158,255,0.08);
  border: 1px solid rgba(79,158,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.contact-value {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}
.contact-item:hover .contact-value { color: var(--accent); }

.availability {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 12px 16px;
  background: rgba(34,197,94,0.06);
  border: 1px solid rgba(34,197,94,0.15);
  border-radius: var(--radius);
}
.avail-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  flex-shrink: 0;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.form-group:last-of-type { margin-bottom: 20px; }

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.form-group select option { background: #111520; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: rgba(79,158,255,0.04);
}
.form-group textarea { resize: vertical; }

.form-note {
  margin-top: 12px;
  font-size: 0.85rem;
  text-align: center;
  color: var(--success);
  min-height: 20px;
}

/* ── Footer ── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy {
  font-size: 0.85rem;
  color: var(--text-dim);
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ── */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card.large {
    grid-column: span 2;
    display: flex;
    flex-direction: column;
  }
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 68px 0 0 0;
    background: rgba(10,13,20,0.97);
    backdrop-filter: blur(16px);
    padding: 40px 24px;
    gap: 8px;
    z-index: 999;
  }
  .nav-links.open .nav-link {
    font-size: 1.1rem;
    padding: 12px 16px;
  }

  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.large {
    grid-column: span 1;
    display: flex;
    flex-direction: column;
  }
  .hero-stats { padding: 16px 0; }
  .stat { padding: 0 20px; }
  .stat-num { font-size: 1.2rem; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .section { padding: 72px 0; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-stats { flex-direction: column; gap: 12px; }
  .stat-divider { display: none; }
}