/* ============================================
   Taofik Bishi — Portfolio Stylesheet
   Dark theme + cyber-green accent
   ============================================ */

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

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1520;
  --bg-card: #141c2b;
  --bg-card-hover: #1a2538;
  --accent: #00ff88;
  --accent-dim: rgba(0, 255, 136, 0.15);
  --accent-glow: rgba(0, 255, 136, 0.3);
  --text-primary: #e8ecf1;
  --text-secondary: #8892a4;
  --text-muted: #5a6478;
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(0, 255, 136, 0.2);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1100px;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: #33ffaa;
}

img {
  max-width: 100%;
  display: block;
}

/* --- Matrix Background --- */
#matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.04;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 14, 23, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

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

.nav-logo:hover {
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-dim);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
}

.hero-content {
  max-width: 720px;
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-muted);
  min-height: 1.7em;
  margin-bottom: 36px;
}

.hero-tagline .cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

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

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  animation: float 2.5s ease-in-out infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  opacity: 0.4;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: #33ffaa;
  color: var(--bg-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-accent);
}

.btn-outline:hover {
  background: var(--accent-dim);
  color: var(--accent);
  transform: translateY(-2px);
}

/* --- Section Base --- */
.section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 56px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* --- About Section --- */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about-text strong {
  color: var(--text-primary);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color var(--transition), transform var(--transition);
}

.highlight-card:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.highlight-icon {
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius);
  flex-shrink: 0;
}

.highlight-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.highlight-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Skills Section --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.skill-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.skill-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.skill-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 10px;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #00cc6a);
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* --- Projects Section --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.project-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.project-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  flex-grow: 1;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 10px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  border: 1px solid var(--border-accent);
}

.project-link {
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.project-link:hover {
  gap: 8px;
}

/* --- Blog Section --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  color: var(--text-primary);
  text-decoration: none;
}

.blog-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  color: var(--text-primary);
}

.blog-card-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 10px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  border: 1px solid var(--border-accent);
  display: inline-block;
  width: fit-content;
  margin-bottom: 16px;
}

.blog-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.blog-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.875rem;
  flex-grow: 1;
  margin-bottom: 16px;
  line-height: 1.6;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Blog Article Page --- */

/* Reading Progress Bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #33ffaa);
  z-index: 1001;
  transition: width 0.1s linear;
}

.blog-article {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.article-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.meta-separator {
  color: var(--text-muted);
}

.article-title {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.article-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Article Body */
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--accent);
}

.article-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.8;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-body em {
  color: var(--accent);
  font-style: italic;
}

.article-body ul,
.article-body ol {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  padding-left: 24px;
  line-height: 1.8;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body li strong {
  color: var(--text-primary);
}

/* Code Blocks */
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--bg-card);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.article-body pre {
  background: #0c1219;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  overflow-x: auto;
  position: relative;
}

.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: #c5d1de;
  display: block;
  white-space: pre;
}

/* Syntax Highlighting (dark theme) */
.article-body pre code .keyword { color: #ff79c6; }
.article-body pre code .string { color: #f1fa8c; }
.article-body pre code .comment { color: #6272a4; }
.article-body pre code .function { color: #50fa7b; }
.article-body pre code .number { color: #bd93f9; }

/* Article CTA */
.article-cta {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Contact Resume Button --- */
.contact-resume {
  text-align: center;
  margin-bottom: 32px;
}

/* --- Experience Timeline --- */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--border));
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  z-index: 1;
}

.timeline-item:first-child .timeline-marker {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition);
}

.timeline-content:hover {
  border-color: var(--border-accent);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}

.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-content h4 {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* --- Education & Certifications --- */
.education-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.subsection-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--accent);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
}

.edu-card {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  transition: border-color var(--transition);
}

.edu-card:hover {
  border-color: var(--border-accent);
}

.edu-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.edu-details h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.edu-degree {
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 4px;
}

.edu-date,
.edu-location {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.cert-card {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: border-color var(--transition);
}

.cert-card:hover {
  border-color: var(--border-accent);
}

.cert-badge {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent);
  flex-shrink: 0;
}

.cert-details h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.cert-details p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Contact Section --- */
.contact-intro {
  text-align: center;
  color: var(--text-secondary);
  max-width: 560px;
  margin: -24px auto 40px;
  font-size: 0.95rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  color: var(--text-primary);
  display: block;
}

.contact-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  color: var(--text-primary);
}

.contact-icon {
  font-size: 1.5rem;
  font-weight: 700;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 50%;
  margin: 0 auto 16px;
  color: var(--accent);
  font-family: var(--font-mono);
}

.contact-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.contact-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  word-break: break-word;
}

/* --- Footer --- */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Fade-in Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */

/* Tablet */
@media (max-width: 900px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .education-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 23, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1.2rem;
    padding: 12px 24px;
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 1.6rem;
    margin-bottom: 40px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 240px;
    text-align: center;
  }

  /* Blog article mobile */
  .blog-article {
    padding: 100px 16px 60px;
  }

  .article-title {
    font-size: 1.6rem;
  }

  .article-body h2 {
    font-size: 1.3rem;
  }

  .article-body pre {
    padding: 16px;
    margin-left: -16px;
    margin-right: -16px;
    border-radius: 0;
  }

  .article-body pre code {
    font-size: 0.72rem;
  }

  .article-cta {
    flex-direction: column;
  }

  .article-cta .btn {
    text-align: center;
  }
}