/* ==========================================================================
   Tahir Farman - One-Page Portfolio Design System & Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-dark: #080c14;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --glass-bg: rgba(15, 23, 42, 0.75);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-hover: rgba(16, 185, 129, 0.4);
  
  --accent-emerald: #10b981;
  --accent-cyan: #06b6d4;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #6366f1 100%);
  --accent-gradient-hover: linear-gradient(135deg, #34d399 0%, #22d3ee 50%, #818cf8 100%);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --border-color: rgba(255, 255, 255, 0.08);
  --shadow-glow: 0 0 30px rgba(16, 185, 129, 0.15);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-emerald);
}

/* Background Ambient Orbs */
.bg-ambient-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
  animation: orbFloat 18s infinite ease-in-out alternate;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-emerald);
  top: -100px;
  left: -100px;
}

.orb-2 {
  width: 450px;
  height: 450px;
  background: var(--accent-indigo);
  top: 40%;
  right: -150px;
  animation-delay: -6s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: var(--accent-cyan);
  bottom: -100px;
  left: 30%;
  animation-delay: -12s;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.1); }
  100% { transform: translate(-40px, 80px) scale(0.95); }
}

/* Typography Utilities */
.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.mono-font {
  font-family: 'Fira Code', monospace;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 50px auto;
}

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

/* Container & Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
  position: relative;
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  padding: 12px 0;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo span.dot {
  width: 8px;
  height: 8px;
  background: var(--accent-emerald);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 10px var(--accent-emerald);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition-normal);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.btn-contact-sm {
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  color: #fff;
  text-decoration: none;
  transition: var(--transition-bounce);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.25);
}

.btn-contact-sm:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 130px;
  padding-bottom: 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge .status-ping {
  width: 10px;
  height: 10px;
  background: var(--accent-emerald);
  border-radius: 50%;
  position: relative;
}

.hero-badge .status-ping::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: rgba(16, 185, 129, 0.4);
  border-radius: 50%;
  animation: ping 2s infinite;
}

@keyframes ping {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.6;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 48px;
}

.btn-primary {
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition-bounce);
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 40px rgba(16, 185, 129, 0.45);
}

.btn-secondary {
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition-normal);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 16px;
}

.social-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.1rem;
  transition: var(--transition-bounce);
}

.social-icon:hover {
  color: var(--accent-emerald);
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  transform: translateY(-3px);
}

/* Profile Image Container */
.hero-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-card {
  position: relative;
  width: 340px;
  height: 420px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  padding: 16px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
}

.profile-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: 0 20px 40px -10px rgba(16, 185, 129, 0.2);
}

.profile-img-inner {
  width: 100%;
  height: 100%;
  border-radius: 18px;
  overflow: hidden;
  position: relative;
}

.profile-img-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.profile-card:hover img {
  transform: scale(1.04);
}

/* Floating Experience Pill */
.floating-pill {
  position: absolute;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  animation: floatCard 6s ease-in-out infinite alternate;
}

.pill-exp {
  bottom: -20px;
  left: -20px;
}

.pill-tech {
  top: 30px;
  right: -20px;
  animation-delay: -3s;
}

.floating-pill .icon-box {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.floating-pill .pill-text h4 {
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1;

}

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

@keyframes floatCard {
  0% { transform: translateY(0); }
  100% { transform: translateY(-12px); }
}

/* About Section & Stats */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition-normal);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.stat-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-emerald);
  line-height: 1;
  margin-bottom: 6px;
}

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

/* Skills Section */
.skills-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.skill-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-fast);
}

.skill-category-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow-glow);
}

.skill-category-card:hover::before {
  opacity: 1;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.category-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.category-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.skills-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
}

.skill-pill i {
  color: var(--accent-emerald);
  font-size: 1rem;
}

.skill-pill:hover {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #fff;
  transform: scale(1.05);
}

/* Experience Section (Timeline) */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-emerald), var(--accent-indigo), rgba(255, 255, 255, 0.05));
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 40px;
}

.timeline-dot {
  position: absolute;
  left: 11px;
  top: 24px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 3px solid var(--accent-emerald);
  box-shadow: 0 0 12px var(--accent-emerald);
  z-index: 2;
  transition: var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
  background: var(--accent-emerald);
  scale: 1.25;
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-normal);
}

.timeline-content:hover {
  background: var(--bg-card-hover);
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateX(6px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.role-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.company-name {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.date-badge {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--accent-emerald);
}

.location-tag {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
}

/* Featured Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: var(--shadow-card), 0 0 25px rgba(16, 185, 129, 0.15);
}

.project-header {
  padding: 24px 28px 12px 28px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.project-title {
  font-size: 1.4rem;
  font-weight: 700;
}

.project-date {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 500;
}

.project-company {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 2px;
}

.project-body {
  padding: 0 28px 24px 28px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--accent-indigo);
}

.btn-project-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.btn-project-link:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
}

/* Education & Certifications */
.edu-cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.edu-card, .cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-normal);
}

.edu-card:hover, .cert-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.edu-degree {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.edu-institution {
  color: var(--accent-emerald);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.edu-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Misc Grid (Languages & Hobbies) */
.misc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 30px;
}

.misc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
}

.list-custom {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.list-custom li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.list-custom li i {
  color: var(--accent-cyan);
  font-size: 1.1rem;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.contact-item:hover {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateX(5px);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-details h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-details p {
  font-size: 1rem;
  font-weight: 600;
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-emerald);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  background: rgba(8, 12, 20, 0.95);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

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

.btn-scroll-top {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-bounce);
}

.btn-scroll-top:hover {
  background: var(--accent-emerald);
  color: #fff;
  border-color: transparent;
  transform: translateY(-4px);
}

/* Toast Notification */
.toast-notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: rgba(16, 185, 129, 0.9);
  color: #fff;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  z-index: 2000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* Media Queries */
@media (max-width: 992px) {
  .hero-grid, .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-title {
    font-size: 2.8rem;
  }

  .edu-cert-grid, .misc-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    transition: var(--transition-normal);
  }

  .nav-menu.active {
    left: 0;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.4rem;
  }

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

  .timeline::before {
    left: 10px;
  }

  .timeline-item {
    padding-left: 36px;
  }

  .timeline-dot {
    left: 1px;
  }
}