@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;700&display=swap');

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  position: relative;
}

/* CSS Noise/Grain Overlay */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
  z-index: 9999;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 5px;
  border: 2px solid var(--scrollbar-track);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

::selection {
  background-color: var(--accent-primary);
  color: #000;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 8rem 0;
  position: relative;
  overflow: hidden;
}

.section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.section-title::before {
  content: "> ";
  color: var(--accent-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 4rem;
  max-width: 600px;
}

.glass {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.glow {
  box-shadow: var(--shadow-glow);
}

.glow-text {
  text-shadow: 0 0 10px var(--accent-primary);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: 70px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

.navbar.scrolled {
  background-color: var(--nav-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-glow);
}

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

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-primary);
  transition: width 0.3s ease;
}

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

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-glass);
  color: var(--text-primary);
  transition: all 0.3s ease;
}

/* Hero Section */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  padding-top: 100px;
  padding-bottom: 50px;
}

#hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.15;
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-terminal {
  background: var(--terminal-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.terminal-header {
  height: 35px;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 6px;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-dot.red { background-color: #ff5f56; }
.terminal-dot.yellow { background-color: #ffbd2e; }
.terminal-dot.green { background-color: #27c93f; }

.terminal-body {
  padding: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
  min-height: 140px;
}

.terminal-line {
  margin-bottom: 0.5rem;
}

.terminal-prompt {
  color: var(--accent-primary);
}

.terminal-output {
  color: var(--text-secondary);
}

.typing-text {
  color: var(--accent-secondary);
  font-weight: bold;
}

.cursor {
  display: inline-block;
  background-color: var(--accent-secondary);
  width: 8px;
  height: 15px;
  margin-left: 4px;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  from, to { background-color: transparent }
  50% { background-color: var(--accent-secondary) }
}

.hero-name {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1rem;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: -1px;
}

.hero-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
}

.hero-bio {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 2rem;
}

.hero-social {
  display: flex;
  gap: 1rem;
}

.social-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.social-btn:hover {
  transform: translateY(-5px);
  color: var(--text-primary);
}

.social-btn.linkedin:hover { border-color: #0077b5; box-shadow: 0 0 15px rgba(0, 119, 181, 0.4); color: #0077b5; }
.social-btn.github:hover { border-color: #ffffff; box-shadow: 0 0 15px rgba(255, 255, 255, 0.4); color: #ffffff; }
.social-btn.instagram:hover { border-color: #e4405f; box-shadow: 0 0 15px rgba(228, 64, 95, 0.4); color: #e4405f; }
.social-btn.email:hover { border-color: var(--accent-primary); box-shadow: 0 0 15px rgba(0, 240, 255, 0.4); color: var(--accent-primary); }

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.profile-pic-wrapper {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  padding: 8px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  box-shadow: var(--shadow-glow-strong);
  animation: float 6s ease-in-out infinite;
}

.profile-pic-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  background-color: var(--bg-secondary);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* About Section */
.about-content {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 850px;
  text-align: left;
}

/* Work Experience - Vertical Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
  margin-top: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 5px;
  width: 2px;
  height: 100%;
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 4rem;
}

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

.timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -2rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--border-color);
  border: 2px solid var(--bg-primary);
  transition: all 0.3s ease;
  z-index: 1;
}

.timeline-item.current::before {
  background-color: var(--accent-secondary);
  box-shadow: 0 0 12px var(--accent-secondary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.4); }
  70% { transform: scale(1.2); box-shadow: 0 0 0 8px rgba(57, 255, 20, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(57, 255, 20, 0); }
}

.timeline-card {
  padding: 2rem;
  margin-left: 0.5rem;
}

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

.timeline-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  display: block;
}

.timeline-company {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.timeline-position {
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 1rem;
}

.timeline-description {
  color: var(--text-secondary);
}

.current-badge {
  display: inline-block;
  background: var(--gradient-accent);
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-left: 10px;
  vertical-align: middle;
  font-family: 'JetBrains Mono', monospace;
}

/* Education Section */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.education-card {
  padding: 2rem;
}

.education-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-5px);
}

.education-institution {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.education-degree {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 0.2rem;
}

.education-field {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.education-dates {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Skills Section */
.skills-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2rem;
}

.skill-category {
  padding: 2rem;
}

.skill-category-title {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

.skill-item {
  margin-bottom: 1.2rem;
}

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

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}

.skill-bar-bg {
  width: 100%;
  height: 6px;
  background-color: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  width: 0;
  height: 100%;
  background: var(--gradient-accent);
  border-radius: 3px;
  transition: width 1.5s cubic-bezier(0.1, 0.8, 0.2, 1);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.project-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-5px);
}

.project-screenshot {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, rgba(0,240,255,0.1), rgba(57,255,20,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.project-card:hover .project-screenshot img {
  transform: scale(1.05);
}

.project-screenshot-placeholder {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.project-info {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent-primary);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: var(--bg-glass);
}

.project-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.project-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.project-short-info {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-download:hover:not(.locked) {
  border-color: var(--accent-primary);
  background-color: rgba(0, 240, 255, 0.1);
  box-shadow: var(--shadow-glow);
}

.btn-download.locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-details {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-details:hover {
  text-decoration: underline;
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 1.5rem;
}

.modal.visible {
  display: flex;
  opacity: 1;
}

.modal-content {
  width: 100%;
  max-width: 750px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  padding: 2.5rem;
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  color: var(--text-primary);
  font-size: 1.2rem;
  z-index: 10;
}

.modal-close:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

/* Security Tools Section */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.tool-card {
  padding: 2.5rem 2rem;
  text-align: center;
}

.tool-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-5px);
}

.tool-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  display: block;
}

.tool-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tool-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  min-height: 60px;
}

.tool-launch-btn {
  display: inline-block;
  background: var(--gradient-accent);
  color: #000;
  padding: 0.6rem 1.5rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.tool-launch-btn:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: scale(1.03);
}

/* Tool Modal Body & Styles */
#tool-modal-body {
  margin-top: 1.5rem;
}

.tool-ui {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.tool-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tool-input-group label {
  font-weight: 600;
  font-size: 0.9rem;
  font-family: 'JetBrains Mono', monospace;
}

.tool-select, .tool-input, .tool-textarea {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  width: 100%;
}

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

.tool-btn {
  background: var(--gradient-accent);
  color: #000;
  font-weight: 700;
  padding: 0.8rem;
  border-radius: 6px;
  text-align: center;
  transition: all 0.2s ease;
}

.tool-btn:hover {
  box-shadow: var(--shadow-glow-strong);
}

.tool-output-area {
  background: rgba(0,0,0,0.3);
  border: 1px dashed var(--border-color);
  border-radius: 6px;
  padding: 1.2rem;
  position: relative;
  min-height: 60px;
}

.tool-output-text {
  font-family: 'JetBrains Mono', monospace;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 0.95rem;
}

.tool-copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
}

.tool-copy-btn:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

/* Calculator Grid */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.calc-display {
  grid-column: span 4;
  background: #000;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  min-height: 60px;
  word-break: break-all;
}
.calc-btn {
  padding: 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.2rem;
  transition: all 0.2s ease;
}
.calc-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}
.calc-btn.calc-action {
  color: var(--accent-primary);
}
.calc-btn.calc-equals {
  background: var(--gradient-accent);
  color: #000;
}

/* Contact Section */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: 3rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.form-input, .form-textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.btn-submit {
  width: 100%;
  background: var(--gradient-accent);
  color: #000;
  font-weight: 700;
  padding: 1rem;
  border-radius: 6px;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.btn-submit:hover:not(:disabled) {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-status {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 6px;
  text-align: center;
  font-size: 0.95rem;
  font-family: 'JetBrains Mono', monospace;
  display: none;
}

.form-status.success {
  display: block;
  background-color: rgba(57, 255, 20, 0.1);
  color: var(--accent-secondary);
  border: 1px solid var(--accent-secondary);
}

.form-status.error {
  display: block;
  background-color: rgba(255, 56, 96, 0.1);
  color: var(--accent-danger);
  border: 1px solid var(--accent-danger);
}

/* Toast System */
#toast-container {
  position: fixed;
  top: 2rem;
  right: 2rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-left: 4px solid var(--accent-primary);
  border-radius: 6px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  color: var(--text-primary);
  pointer-events: auto;
  animation: toastIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.25);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-width: 280px;
}

.toast.success { border-left-color: var(--accent-secondary); }
.toast.error { border-left-color: var(--accent-danger); }
.toast.info { border-left-color: var(--accent-primary); }

.toast-close {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.toast-close:hover {
  color: var(--text-primary);
}

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-5px);
}

/* Site Login Overlay */
.site-login-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.site-login-card {
  width: 100%;
  max-width: 400px;
  padding: 3rem;
  text-align: center;
}

.site-login-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  color: var(--accent-primary);
  margin-bottom: 2rem;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-secondary);
}

/* Scroll Animation Classes */
.fade-in-section {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Footer */
.footer {
  padding: 5rem 0 3rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  background-color: var(--bg-secondary);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.footer-heart {
  color: var(--accent-danger);
  display: inline-block;
  animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* Responsive Grid Adjustments */
@media (max-width: 1024px) {
  .hero-content {
    gap: 2rem;
  }
  .hero-name {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 6rem 0;
  }
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-text {
    order: 2;
  }
  .hero-image {
    order: 1;
  }
  .profile-pic-wrapper {
    width: 250px;
    height: 250px;
  }
  .hero-bio {
    margin: 0 auto 2rem;
  }
  .hero-social {
    justify-content: center;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    padding-top: 4rem;
    gap: 2.5rem;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
  }
  .nav-links.active {
    transform: translateX(0);
  }
  .nav-links a {
    font-size: 1.2rem;
  }
  .education-grid, .skills-categories, .projects-grid, .tools-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1920px) {
  .container {
    max-width: 1500px;
  }
  body {
    font-size: 18px;
  }
}