/* ==========================================================================
   ROSHAN NISHAD - PORTFOLIO & INTERACTIVE CV STYLESHEET
   Modern, High-Converting, Responsive Design System (Pure CSS3)
   ========================================================================== */

/* --- CSS Variables & Theme Tokens --- */
:root {
  /* Color Palette - Tech Dark (Default) */
  --bg-main: #090d16;
  --bg-surface: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-input: #0b1120;
  --bg-terminal: #0b0f19;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-focus: #6366f1;
  --border-accent: rgba(99, 102, 241, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-primary: #6366f1; /* Electric Indigo */
  --accent-primary-hover: #4f46e5;
  --accent-secondary: #06b6d4; /* Neon Cyan */
  --accent-teal: #10b981; /* Emerald Teal */
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --gradient-brand: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
  --gradient-card: linear-gradient(180deg, rgba(30, 41, 59, 0.4) 0%, rgba(15, 23, 42, 0.7) 100%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 35px rgba(99, 102, 241, 0.2);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.45s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-height: 72px;
  --container-max: 1200px;
}

/* Light Mode Overrides */
[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --bg-input: #f1f5f9;
  --bg-terminal: #0f172a;

  --border-subtle: rgba(0, 0, 0, 0.07);
  --border-card: rgba(0, 0, 0, 0.1);
  --border-focus: #4f46e5;
  --border-accent: rgba(79, 70, 229, 0.3);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  --accent-primary: #4f46e5;
  --accent-primary-hover: #4338ca;
  --accent-secondary: #0891b2;
  --accent-teal: #059669;
  --accent-purple: #7c3aed;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;

  --gradient-brand: linear-gradient(135deg, #4f46e5 0%, #0891b2 100%);
  --gradient-glow: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(8, 145, 178, 0.05) 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.85) 100%);

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 35px rgba(79, 70, 229, 0.12);
}

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

html {
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 1.25rem);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 15% 15%, rgba(99, 102, 241, 0.07) 0px, transparent 50%),
    radial-gradient(at 85% 85%, rgba(6, 182, 212, 0.05) 0px, transparent 50%);
  background-attachment: fixed;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  font-size: 1rem;
}

input, textarea, select {
  font-family: inherit;
  font-size: 0.95rem;
}

ul, ol {
  list-style: none;
}

img, svg {
  vertical-align: middle;
}

/* --- Accessibility Focus State --- */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

/* --- Layout Containers --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding-top: 6rem;
  padding-bottom: 6rem;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

/* --- UI Buttons & Links --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.45rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
  filter: brightness(1.08);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.45rem 0.95rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* --- Badges & Pills --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-teal {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-teal);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-indigo {
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-secondary);
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.12);
  color: var(--accent-purple);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-normal), border var(--transition-normal);
}

[data-theme="light"] .site-header {
  background: rgba(255, 255, 255, 0.85);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-logo .brand-tag {
  font-family: var(--font-mono);
  color: var(--accent-secondary);
}

.brand-pulse {
  width: 9px;
  height: 9px;
  background: var(--accent-teal);
  border-radius: 50%;
  position: relative;
  display: inline-block;
  box-shadow: 0 0 10px var(--accent-teal);
}

.brand-pulse::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.4);
  animation: pulse-ring 2s infinite ease-in-out;
}

@keyframes pulse-ring {
  0% { transform: scale(0.7); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.35rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-brand);
  transition: width var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  transform: rotate(15deg);
}

.theme-toggle-btn .icon-sun {
  display: none;
}
.theme-toggle-btn .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle-btn .icon-sun {
  display: block;
}
[data-theme="light"] .theme-toggle-btn .icon-moon {
  display: none;
}

/* Mobile Navigation Hamburger */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
}

.mobile-menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-card);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-drawer.open {
  display: flex;
}

.mobile-nav-drawer .nav-link {
  font-size: 1.1rem;
  padding: 0.5rem 0;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: 4.5rem;
  padding-bottom: 5.5rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Availability Status Badge */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-teal);
  width: fit-content;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-teal);
  box-shadow: 0 0 8px var(--accent-teal);
}

.hero-title {
  font-size: 3.35rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.12;
  color: var(--text-primary);
}

.hero-title .text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-role {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-role .accent-word {
  color: var(--accent-secondary);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.5rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 0.5rem;
}

.social-icon-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.social-icon-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

/* Interactive Hero Terminal Card */
.terminal-card {
  background: var(--bg-terminal);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  overflow: hidden;
  position: relative;
  font-family: var(--font-mono);
}

.terminal-header {
  background: rgba(0, 0, 0, 0.4);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

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

.terminal-body {
  padding: 1.5rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: #e2e8f0;
}

.terminal-line {
  margin-bottom: 0.75rem;
}

.t-prompt {
  color: var(--accent-teal);
  font-weight: 600;
  margin-right: 0.4rem;
}

.t-cmd {
  color: var(--text-primary);
}

.t-output {
  color: var(--text-muted);
  padding-left: 1.25rem;
  border-left: 2px solid rgba(255, 255, 255, 0.1);
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
}

.t-output strong {
  color: var(--accent-secondary);
}

.t-highlight {
  color: var(--accent-amber);
}

.t-cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  background: var(--accent-secondary);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

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

/* Hero Stats Banner */
.stats-banner {
  margin-top: 4rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
}

.stat-value {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

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

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.project-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

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

.filter-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.project-category-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.project-title {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-tagline {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent-secondary);
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.project-impact {
  background: rgba(99, 102, 241, 0.08);
  border: 1px dashed var(--border-accent);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-teal);
  margin-bottom: 1.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.project-tag {
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.project-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.project-links {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.project-link:hover {
  color: var(--accent-primary);
}

/* ==========================================================================
   EXPERIENCE & EDUCATION SECTION
   ========================================================================== */
.experience-timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  padding-left: 2.5rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 11px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  opacity: 0.4;
}

.timeline-item {
  position: relative;
  margin-bottom: 2.25rem;
}

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

.timeline-pin {
  position: absolute;
  left: -2.5rem;
  top: 1.5rem;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 2px solid var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
  z-index: 2;
}

.timeline-pin.pin-edu {
  border-color: var(--accent-secondary);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

.timeline-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-fast);
}

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

.timeline-header {
  padding: 1.5rem 1.75rem;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  user-select: none;
}

.timeline-header-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.timeline-role-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

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

.timeline-company {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-secondary);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.timeline-toggle-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.timeline-item.open .timeline-toggle-icon {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.timeline-impact-line {
  padding: 0 1.75rem 1rem 1.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-teal);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.timeline-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out, padding var(--transition-normal);
  padding: 0 1.75rem;
  border-top: 1px solid transparent;
}

.timeline-item.open .timeline-body {
  max-height: 800px;
  padding: 1.25rem 1.75rem 1.75rem 1.75rem;
  border-top-color: var(--border-subtle);
}

.timeline-summary {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.timeline-accomplishments {
  margin-bottom: 1.25rem;
}

.timeline-accomplishments li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.65rem;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.timeline-accomplishments li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: 700;
}

.timeline-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-subtle);
}

/* ==========================================================================
   TECHNICAL SKILLS HUB
   ========================================================================== */
.skills-container {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.skills-search-wrapper {
  max-width: 460px;
  margin: 0 auto;
  position: relative;
  width: 100%;
}

.skills-search-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 2.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.skills-search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.25);
}

.skills-search-icon {
  position: absolute;
  left: 1.15rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
}

.skill-category-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.skill-category-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}

.skill-category-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-category-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-category-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.skills-pill-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.skill-pill:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  transform: scale(1.03);
}

.skill-pill.featured {
  border-color: rgba(99, 102, 241, 0.35);
  background: rgba(99, 102, 241, 0.08);
  color: var(--text-primary);
}

.skill-pill.highlight {
  border-color: var(--accent-teal);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-teal);
  font-weight: 600;
}

.skill-level-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
}

.skill-level-dot.expert {
  background: var(--accent-teal);
}

/* Competitive Achievements Sub-Grid */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.achievement-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.achievement-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-amber);
}

.achievement-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.achievement-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-amber);
}

.achievement-metric {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

.achievement-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.achievement-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   RESUME PREVIEWER & ATS SECTION
   ========================================================================== */
.resume-container {
  max-width: 960px;
  margin: 0 auto;
}

.resume-toolbar {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.resume-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.resume-tab-btn {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.resume-tab-btn:hover {
  color: var(--text-primary);
}

.resume-tab-btn.active {
  background: var(--bg-surface);
  color: var(--accent-primary);
  border-color: var(--border-accent);
}

.resume-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.resume-paper {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
}

.resume-header {
  border-bottom: 2px solid var(--border-card);
  padding-bottom: 1.75rem;
  margin-bottom: 2rem;
}

.resume-name {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.resume-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 0.85rem;
}

.resume-contact-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.resume-contact-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.resume-section-heading {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
  margin-top: 2rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.resume-summary-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.resume-skills-block {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.92rem;
}

.resume-skill-row strong {
  color: var(--text-primary);
  min-width: 140px;
  display: inline-block;
}

.resume-entry {
  margin-bottom: 1.5rem;
}

.resume-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.3rem;
  flex-wrap: wrap;
}

.resume-entry-role {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.resume-entry-org {
  font-weight: 600;
  color: var(--accent-secondary);
}

.resume-entry-dates {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.resume-entry-bullets {
  padding-left: 1.25rem;
  list-style-type: disc;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.resume-entry-bullets li {
  margin-bottom: 0.4rem;
}

/* Raw ATS Plain Text Box */
.resume-raw-view {
  display: none;
}

.resume-raw-view.active {
  display: block;
}

.resume-raw-text {
  width: 100%;
  min-height: 550px;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: var(--bg-terminal);
  color: #a7f3d0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  border: 1px solid var(--border-card);
  resize: vertical;
  white-space: pre-wrap;
  tab-size: 2;
}

/* ==========================================================================
   CERTIFICATIONS & BADGES
   ========================================================================== */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.cert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
}

.cert-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.cert-verified {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-teal);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.cert-year {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.cert-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 0.4rem;
}

.cert-issuer {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent-secondary);
  margin-bottom: 1rem;
}

.cert-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.cert-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
}

.cert-id {
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.cert-verify-link {
  color: var(--accent-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.cert-verify-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   BLOG / TECHNICAL NOTES SECTION
   ========================================================================== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
}

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

.blog-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.blog-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 0.75rem;
}

.blog-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.blog-read-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-primary);
  transition: gap var(--transition-fast);
}

.blog-card:hover .blog-read-btn {
  gap: 0.65rem;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3.5rem;
  align-items: flex-start;
}

.contact-info-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-info-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.contact-info-header p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail {
  display: flex;
  flex-direction: column;
}

.contact-detail span {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  font-weight: 600;
}

.contact-detail a, .contact-detail p {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
}

.contact-detail a:hover {
  color: var(--accent-primary);
}

.copy-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-secondary);
  margin-top: 0.25rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.copy-email-btn:hover {
  color: var(--accent-primary);
}

/* Contact Form */
.contact-form-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  background: var(--bg-input);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 14px rgba(99, 102, 241, 0.25);
}

.form-textarea {
  min-height: 130px;
  resize: vertical;
}

.form-submit-btn {
  width: 100%;
  padding: 0.95rem;
  font-size: 1rem;
}

.form-feedback {
  display: none;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-teal);
}

.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 4.5rem 0 2rem 0;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-bio {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 380px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.footer-link:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-back-top {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-back-top:hover {
  color: var(--accent-primary);
}

/* ==========================================================================
   MODALS (CASE STUDY & BLOG READER)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 840px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-dialog {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close-btn:hover {
  color: #ffffff;
  background: var(--accent-rose);
  border-color: var(--accent-rose);
}

.modal-content-wrapper {
  padding: 2.5rem;
}

.modal-header-banner {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.modal-subtitle {
  font-size: 1rem;
  color: var(--accent-secondary);
  font-weight: 500;
}

.case-study-section {
  margin-bottom: 1.75rem;
}

.case-study-section h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.case-study-section p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.case-study-section ul {
  padding-left: 1.25rem;
  list-style-type: disc;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.case-study-section ul li {
  margin-bottom: 0.5rem;
}

.case-study-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.case-metric-box {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-teal);
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-left: 4px solid var(--accent-teal);
  color: var(--text-primary);
  padding: 0.9rem 1.4rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 3000;
  transform: translateY(120%);
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  pointer-events: none;
}

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

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .stats-banner {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }
  .section {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }
  .nav-menu {
    display: none;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .hero-role {
    font-size: 1.15rem;
  }
  .stats-banner {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .resume-paper {
    padding: 1.75rem;
  }
  .modal-content-wrapper {
    padding: 1.75rem;
  }
  .resume-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .resume-tabs {
    width: 100%;
    justify-content: center;
  }
  .resume-actions {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.95rem;
  }
  .stats-banner {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .experience-timeline {
    padding-left: 1.75rem;
  }
  .timeline-pin {
    left: -1.75rem;
    width: 18px;
    height: 18px;
  }
  .timeline-header {
    padding: 1.25rem;
  }
}