/* ==========================================================================
   CSS Stylesheet for Zohaib Ali's Portfolio
   ========================================================================== */

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
}

/* Layout Container */
.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* Header & Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.75rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
}

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-body) 100%);
  text-align: center;
}

.hero-content {
  max-width: 750px;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.2rem;
  letter-spacing: -1px;
}

.hero-title .highlight {
  color: var(--primary);
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}

.btn-outline {
  border: 1.5px solid var(--border);
  color: var(--text-main);
  background-color: #ffffff;
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* Sections Common */
.section {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.title-underline {
  width: 50px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 0.6rem auto 1rem;
}

.section-description {
  color: var(--text-muted);
  font-size: 1rem;
}

/* About Section */
.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  line-height: 1.75;
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.skill-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.skill-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.skill-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-tags span {
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-body);
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.project-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.project-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.project-link {
  display: inline-block;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
}

.project-link:hover {
  text-decoration: underline;
}

/* Contact Section */
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  max-width: 650px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.contact-icon {
  font-size: 1.5rem;
  background: var(--primary-light);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.contact-item p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Footer */
.footer {
  background: #ffffff;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
}

.footer-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-sub {
  font-size: 0.8rem;
  margin-top: 0.35rem;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .nav {
    flex-direction: column;
    gap: 0.8rem;
    padding: 1rem 0;
  }

  .nav-links {
    gap: 1.2rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .about-card,
  .contact-card {
    padding: 1.75rem;
  }

  .section {
    padding: 3.5rem 0;
  }
}