/* ============================================
   Imran Ahmed — Portfolio Styles
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-primary: #07070d;
  --bg-secondary: #0d0d18;
  --bg-card: #12121e;
  --bg-card-hover: #1a1a2e;
  --text-primary: #e8e8f0;
  --text-secondary: #9494b8;
  --text-muted: #64648a;
  --accent-1: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
  --accent-gradient-2: linear-gradient(135deg, #6366f1, #06b6d4);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-hover: rgba(255, 255, 255, 0.06);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --nav-height: 70px;
}

/* --- Reset --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
ul { list-style: none; }
img { max-width: 100%; display: block; }
::selection {
  background: rgba(99, 102, 241, 0.3);
  color: #fff;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--accent-1);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-2); }

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn i { font-size: 0.85rem; }
.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.45);
}
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}
.btn-outline:hover {
  border-color: var(--accent-1);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  color: var(--accent-1);
  transform: translateY(-2px);
}

/* --- Section --- */
.section {
  padding: 100px 0;
  position: relative;
}
.section-alt {
  background: var(--bg-secondary);
}
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 60px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-num {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-1);
  font-weight: 400;
}
.accent { color: var(--accent-1); }

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(7, 7, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  gap: 32px;
}
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition);
}
.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: orbFloat 20s ease-in-out infinite;
}
.orb-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-1);
  top: -200px;
  right: -200px;
  animation-delay: 0s;
}
.orb-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-2);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}
.orb-3 {
  width: 300px;
  height: 300px;
  background: var(--accent-3);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
  opacity: 0.15;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(100px, -50px) scale(1.1); }
  50% { transform: translate(-50px, 100px) scale(0.9); }
  75% { transform: translate(80px, 50px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}
.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent-1);
  display: block;
  margin-bottom: 12px;
}
.hero-name {
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  font-weight: 800;
  line-height: 1.1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}
.hero-role {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 2rem;
}
.role-type {
  color: var(--accent-3);
}
.role-cursor {
  color: var(--accent-1);
  animation: blink 1s step-end infinite;
  font-weight: 100;
}
@keyframes blink {
  50% { opacity: 0; }
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}
.hero-socials {
  display: flex;
  gap: 20px;
}
.hero-socials a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: var(--transition);
}
.hero-socials a:hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-3px);
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}
.about-img-wrapper {
  position: relative;
  width: 300px;
  margin: 0 auto;
}
.about-img-wrapper img {
  width: 100%;
  border-radius: var(--radius-md);
  position: relative;
  z-index: 1;
}
.about-img-border {
  position: absolute;
  inset: -8px;
  border-radius: calc(var(--radius-md) + 8px);
  background: var(--accent-gradient);
  z-index: 0;
  animation: borderRotate 4s linear infinite;
}
@keyframes borderRotate {
  0% { filter: hue-rotate(0deg) blur(4px); }
  100% { filter: hue-rotate(360deg) blur(4px); }
}

.about-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 32px;
}
.stat-item {
  text-align: center;
}
.stat-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-plus {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--accent-3);
}
.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.about-content h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.about-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}
.about-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 28px 0;
}
.info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.info-item span:last-child {
  font-size: 0.95rem;
  color: var(--text-primary);
}
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  margin-right: 6px;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.about-tags span {
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-1);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

/* ============================================
   SKILLS
   ============================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.skill-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.skill-icon {
  font-size: 2.5rem;
  color: var(--skill-color, var(--accent-1));
  margin-bottom: 12px;
}
.skill-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.skill-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: var(--accent-gradient-2);
  border-radius: 3px;
  width: 0;
  transition: width 1.2s ease;
}

/* ============================================
   TIMELINE (Education & Experience)
   ============================================ */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-3));
}
.timeline-item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 48px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-1);
  z-index: 1;
}
.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}
.timeline-content:hover {
  border-color: rgba(99, 102, 241, 0.2);
  transform: translateX(4px);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-3);
  margin-bottom: 8px;
}
.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.timeline-content h4 {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 12px;
}
.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   PROJECTS
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
}
.project-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.project-card:hover .project-img img {
  transform: scale(1.08);
}
.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7, 7, 13, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  opacity: 0;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}
.project-card:hover .project-overlay {
  opacity: 1;
}
.project-link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 1.2rem;
  transition: var(--transition);
}
.project-link:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  transform: scale(1.1);
}
.project-info {
  padding: 24px;
}
.project-info h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}
.project-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.project-tags span {
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 500;
  background: rgba(99, 102, 241, 0.08);
  color: var(--accent-1);
  border: 1px solid rgba(99, 102, 241, 0.15);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}
.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-1);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}
.contact-item a,
.contact-item span:last-child {
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: var(--transition);
}
.contact-item a:hover {
  color: var(--accent-1);
}
.contact-socials {
  display: flex;
  gap: 12px;
}
.contact-socials a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 1rem;
  transition: var(--transition);
}
.contact-socials a:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
  transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-group {
  position: relative;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 16px 16px 48px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}
.form-icon {
  position: absolute;
  left: 16px;
  top: 16px;
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
  transition: var(--transition);
}
.form-group input:focus ~ .form-icon,
.form-group textarea:focus ~ .form-icon {
  color: var(--accent-1);
}
.btn-submit {
  align-self: flex-start;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
  position: relative;
}
.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.footer-content p:first-child {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-content p:nth-child(2) {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.footer-content p:nth-child(2) .fa-heart {
  color: #ef4444;
}
.footer-content p:nth-child(3) {
  color: var(--text-muted);
  font-size: 0.8rem;
}
.footer-top {
  position: absolute;
  right: 24px;
  bottom: 40px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-top:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
  transform: translateY(-3px);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about-info {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }
  .about-tags {
    justify-content: center;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }
  .section-title {
    font-size: 1.6rem;
    margin-bottom: 40px;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: rgba(7, 7, 13, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    transition: var(--transition);
    border-left: 1px solid var(--glass-border);
  }
  .nav-links.open {
    right: 0;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-link {
    font-size: 1.1rem;
  }
  .hero-btns {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-btns .btn {
    width: 100%;
    justify-content: center;
  }
  .about-img-wrapper {
    width: 220px;
  }
  .about-stats {
    gap: 24px;
  }
  .stat-num {
    font-size: 1.6rem;
  }
  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .timeline-content {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero-name {
    font-size: 2.2rem;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .about-info {
    grid-template-columns: 1fr;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    right: 16px;
    bottom: 24px;
  }
}