/* ==========================================================================
   FrostHoot Studio — Modern Portfolio Design System
   Aesthetic: Deep Space Frost, Glassmorphism, Sleek Cybernetic Accent
   ========================================================================== */

:root {
  --bg-base: #060911;
  --bg-surface: #0B1120;
  --bg-card: rgba(15, 23, 42, 0.72);
  --bg-card-hover: rgba(26, 38, 66, 0.85);
  --bg-glass: rgba(11, 17, 32, 0.75);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(56, 189, 248, 0.4);
  --border-glow: rgba(56, 189, 248, 0.15);

  --accent-cyan: #38BDF8;
  --accent-teal: #06B6D4;
  --accent-blue: #3B82F6;
  --accent-indigo: #6366F1;
  --accent-purple: #A855F7;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;

  --text-main: #F8FAFC;
  --text-body: #CBD5E1;
  --text-muted: #64748B;
  --text-dim: #475569;

  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

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

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px var(--border-subtle);
  --shadow-hover: 0 20px 40px -15px rgba(2, 132, 199, 0.25), 0 0 2px 1px var(--border-active);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.35);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --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);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-base);
  color: var(--text-body);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Dynamic Background Glows */
.bg-glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

.bg-glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-cyan) 0%, rgba(99, 102, 241, 0) 70%);
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
}

.bg-glow-2 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--accent-purple) 0%, rgba(56, 189, 248, 0) 70%);
  top: 45%;
  right: -100px;
  opacity: 0.2;
}

.bg-glow-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-emerald) 0%, rgba(6, 182, 212, 0) 70%);
  bottom: 5%;
  left: -100px;
  opacity: 0.15;
}

/* Subtle Grid Texture */
.bg-grid-overlay {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 1;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 2;
}

/* Typography Utilities */
h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 20%, var(--accent-cyan) 70%, var(--accent-indigo) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-accent {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-indigo) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Badge & Tag */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-pulse {
  background: rgba(16, 185, 129, 0.12);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #34D399;
  box-shadow: 0 0 8px #34D399;
  animation: pulseAnim 2s infinite ease-in-out;
}

@keyframes pulseAnim {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.badge-cyan {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.badge-purple {
  background: rgba(168, 85, 247, 0.1);
  color: var(--accent-purple);
  border: 1px solid rgba(168, 85, 247, 0.25);
}

.badge-blue {
  background: rgba(59, 130, 246, 0.12);
  color: #60A5FA;
  border: 1px solid rgba(59, 130, 246, 0.25);
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-normal);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  width: 42px;
  height: 42px;
  transition: transform var(--transition-bounce);
}

.brand:hover .brand-logo {
  transform: rotate(-8deg) scale(1.08);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.8rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.93rem;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.4rem 0;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px var(--accent-cyan);
}

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

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1.3rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--font-main);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.72rem 1.4rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0284C7, #0369A1);
  color: #FFFFFF;
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 4px 20px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369A1, #0284C7);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border-color: var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-active);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-sm {
  font-size: 0.82rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 5.5rem 0 3.5rem;
  text-align: center;
  position: relative;
}

.hero-pill-badge {
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.hero-tagline-wrapper {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--accent-cyan);
  font-weight: 500;
}

.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: var(--accent-cyan);
  vertical-align: middle;
  margin-left: 3px;
  animation: blinkCursor 0.9s infinite;
}

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

.hero-desc {
  max-width: 680px;
  margin: 0 auto 2.4rem;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* Stats / Value Bar */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.2rem;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

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

.stat-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.2rem;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.6rem;
  display: block;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  margin-bottom: 0.9rem;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Portfolio Filter & Cards
   ========================================================================== */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.8rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-full);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.2);
}

.filter-btn.active {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border-color: var(--border-active);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.2);
}

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

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(14px);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-active);
  box-shadow: var(--shadow-hover);
}

.project-card:hover::before {
  opacity: 1;
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.4rem;
  gap: 1rem;
}

.project-icon-box {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: #0F172A;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.project-icon-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.project-meta {
  flex-grow: 1;
}

.project-type-tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
  display: block;
}

.project-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
}

.project-desc {
  font-size: 0.93rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-features {
  list-style: none;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.project-feature-item {
  font-size: 0.84rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-feature-item svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.project-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.7rem;
}

.tech-chip {
  background: rgba(255, 255, 255, 0.05);
  color: #94A3B8;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.project-card:hover .tech-chip {
  color: var(--accent-cyan);
  border-color: rgba(56, 189, 248, 0.15);
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: auto;
  flex-wrap: wrap;
}

/* ==========================================================================
   Operator Advantage Section
   ========================================================================== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.8rem;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  backdrop-filter: blur(12px);
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

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

.advantage-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.3rem;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.advantage-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.7rem;
}

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

/* ==========================================================================
   Tech Stack Matrix
   ========================================================================== */
.tech-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.6rem;
}

.tech-group-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  backdrop-filter: blur(12px);
}

.tech-group-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tech-pill-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.tech-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.8rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.88rem;
}

.tech-row-name {
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tech-row-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
}

/* ==========================================================================
   Contact Hub & CTA
   ========================================================================== */
.contact-box {
  background: linear-gradient(135deg, rgba(13, 21, 38, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.contact-box::after {
  content: '';
  position: absolute;
  inset: -100px;
  background: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.contact-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 1rem;
}

.contact-desc {
  max-width: 600px;
  margin: 0 auto 2.2rem;
  color: var(--text-muted);
  font-size: 1.02rem;
}

.contact-channels {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.email-copy-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.4rem 0.6rem 0.4rem 1.2rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

.email-address {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.9rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0;
  margin-top: 4rem;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ==========================================================================
   Interactive Modal (Case Study Deep Dive)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  max-width: 760px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding: 2.2rem;
  position: relative;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), var(--shadow-glow);
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-container {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.5);
  color: #EF4444;
}

.modal-badge {
  margin-bottom: 0.6rem;
}

.modal-title {
  font-size: 1.8rem;
  margin-bottom: 0.4rem;
  color: #FFFFFF;
}

.modal-subtitle {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--accent-cyan);
  margin-bottom: 1.8rem;
  display: block;
}

.modal-section {
  margin-bottom: 1.6rem;
}

.modal-section-title {
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-body-text {
  font-size: 0.94rem;
  color: var(--text-body);
  line-height: 1.7;
}

.modal-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.modal-feature-list li {
  font-size: 0.9rem;
  padding-left: 1.2rem;
  position: relative;
  color: var(--text-body);
}

.modal-feature-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

/* Toast Notification */
.toast-msg {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-surface);
  border: 1px solid var(--accent-cyan);
  color: var(--text-main);
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glow);
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  z-index: 2000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-bounce);
  pointer-events: none;
}

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

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 860px) {
  .nav-menu {
    position: fixed;
    top: 74px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.8rem 0;
    gap: 1.2rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
  }

  .nav-menu.mobile-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .mobile-toggle {
    display: block;
  }

  .hero {
    padding: 3.5rem 0 2rem;
  }

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