/* ==========================================================================
   Sea Green Modern Portfolio Theme
   ========================================================================== */

:root {
  /* Sea Green Dark Theme (Default) */
  --bg-color: #051311;
  --bg-gradient: radial-gradient(circle at 20% 20%, #092e26 0%, #051311 50%, #030d0c 100%);
  --nav-bg: rgba(5, 19, 17, 0.85);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* Accents - Sea Green Palette */
  --accent-1: #10b981;      /* Emerald Sea Green */
  --accent-2: #059669;      /* Deep Sea Green */
  --accent-3: #14b8a6;      /* Luminous Teal */
  --accent-light: #6ee7b7;  /* Mint Light */
  --accent-gradient: linear-gradient(135deg, #10b981 0%, #14b8a6 50%, #34d399 100%);
  --text-gradient: linear-gradient(135deg, #ffffff 30%, #6ee7b7 100%);
  
  /* Cards & Glassmorphism */
  --card-bg: rgba(7, 28, 24, 0.65);
  --card-border: rgba(16, 185, 129, 0.18);
  --card-hover-border: rgba(16, 185, 129, 0.45);
  --card-hover-bg: rgba(10, 38, 33, 0.85);
  --glow-shadow: 0 0 25px rgba(16, 185, 129, 0.25);
  --subtle-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --glass-blur: blur(16px);
  --popup-bg: rgba(5, 22, 19, 0.94);
  
  /* Component tokens */
  --tag-bg: rgba(16, 185, 129, 0.12);
  --tag-color: #34d399;
  --tag-border: rgba(16, 185, 129, 0.25);
  --timeline-line: rgba(16, 185, 129, 0.25);
  --hero-glow: rgba(16, 185, 129, 0.15);
}

[data-theme="light"] {
  /* Sea Green Light Theme */
  --bg-color: #f2f9f6;
  --bg-gradient: radial-gradient(circle at 20% 20%, #e2f4ed 0%, #f2f9f6 50%, #eaf6f1 100%);
  --nav-bg: rgba(242, 249, 246, 0.88);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  
  /* Accents */
  --accent-1: #059669;
  --accent-2: #047857;
  --accent-3: #0d9488;
  --accent-light: #10b981;
  --accent-gradient: linear-gradient(135deg, #059669 0%, #0d9488 100%);
  --text-gradient: linear-gradient(135deg, #0f172a 30%, #059669 100%);
  
  /* Cards */
  --card-bg: rgba(255, 255, 255, 0.82);
  --card-border: rgba(5, 150, 105, 0.18);
  --card-hover-border: rgba(5, 150, 105, 0.45);
  --card-hover-bg: rgba(255, 255, 255, 0.95);
  --glow-shadow: 0 10px 30px rgba(5, 150, 105, 0.12);
  --subtle-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.06);
  --glass-blur: blur(20px);
  --popup-bg: rgba(255, 255, 255, 0.96);
  
  /* Component tokens */
  --tag-bg: rgba(5, 150, 105, 0.1);
  --tag-color: #047857;
  --tag-border: rgba(5, 150, 105, 0.2);
  --timeline-line: rgba(5, 150, 105, 0.2);
  --hero-glow: rgba(5, 150, 105, 0.08);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

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

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.4s ease, color 0.4s ease;
  min-height: 100vh;
}

/* Ambient Glow Orbs */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(120px);
  z-index: 0;
  opacity: 0.5;
  transition: opacity 0.5s ease;
}

.glow-1 {
  width: 450px;
  height: 450px;
  background: var(--accent-1);
  top: -100px;
  right: -50px;
  opacity: 0.22;
}

.glow-2 {
  width: 500px;
  height: 500px;
  background: var(--accent-3);
  bottom: 10%;
  left: -150px;
  opacity: 0.18;
}

.glow-3 {
  width: 350px;
  height: 350px;
  background: #047857;
  top: 45%;
  right: 5%;
  opacity: 0.15;
}

[data-theme="light"] .ambient-glow {
  opacity: 0.12;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.section {
  padding: 6rem 0;
}

/* ==========================================================================
   Typography & Section Headers
   ========================================================================== */

h1, h2, h3, h4, .logo, .section-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.25;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-subtitle {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-1);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.35rem;
  color: var(--text-main);
  position: relative;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--accent-gradient);
  margin: 0.8rem auto 0;
  border-radius: 2px;
}

p strong {
  color: var(--text-main);
  font-weight: 600;
}

strong {
  color: var(--accent-light);
}

[data-theme="light"] strong {
  color: var(--accent-2);
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--card-border);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  transition: transform 0.2s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo-dot {
  color: var(--accent-1);
  font-size: 2rem;
  line-height: 1;
}

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

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s ease, transform 0.2s ease;
  position: relative;
  padding: 0.4rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-1);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
}

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

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

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

/* Theme Toggle Button */
.theme-toggle-modern {
  position: relative;
  width: 58px;
  height: 30px;
  border-radius: 30px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.theme-toggle-modern:hover {
  border-color: var(--accent-1);
  box-shadow: var(--glow-shadow);
}

.toggle-track {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 0 5px;
  font-size: 0.75rem;
  pointer-events: none;
}

.toggle-thumb {
  position: absolute;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-1);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.3s ease;
}

[data-theme="light"] .toggle-thumb {
  transform: translateX(28px);
  background: #059669;
}

/* Mobile Hamburger Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.mobile-menu-btn .bar {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-menu-btn.open .bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.open .bar:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.open .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--popup-bg);
  backdrop-filter: var(--glass-blur);
  z-index: 999;
  padding: 6rem 2rem 2rem;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.mobile-drawer.open {
  right: 0;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-link {
  color: var(--text-main);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 600;
  display: block;
  padding: 0.5rem 0;
  transition: color 0.2s ease, transform 0.2s ease;
}

.mobile-nav-link:hover {
  color: var(--accent-1);
  transform: translateX(6px);
}

.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn-sm {
  padding: 0.65rem 1.3rem;
  font-size: 0.88rem;
  border-radius: 8px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #031d17;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
}

[data-theme="light"] .btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(5, 150, 105, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.55);
}

.btn-arrow {
  transition: transform 0.25s ease;
}

.btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text-main);
  border-color: var(--card-border);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--subtle-shadow);
}

.btn-secondary:hover {
  background: var(--card-hover-bg);
  border-color: var(--accent-1);
  color: var(--accent-1);
  transform: translateY(-3px);
  box-shadow: var(--glow-shadow);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 4rem;
}

.hero-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
}

.hero-content {
  flex: 1.2;
}

.hero-tagline-wrap {
  margin-bottom: 1.2rem;
}

.tagline-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--tag-color);
  letter-spacing: 0.5px;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-1);
  box-shadow: 0 0 10px var(--accent-1);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.4);
    opacity: 0.5;
  }
}

.hero-headline {
  font-size: 3rem;
  letter-spacing: -1px;
  color: var(--text-main);
  margin-bottom: 1.2rem;
  font-weight: 800;
}

.hero-subtext {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 2.2rem;
  color: var(--accent-3);
  min-height: 2.2rem;
  display: flex;
  align-items: center;
}

.typing-text {
  color: var(--accent-3);
  font-weight: 600;
  font-family: inherit;
  letter-spacing: -0.2px;
}

[data-theme="light"] .typing-text {
  color: var(--accent-1);
}

.typing-text::after {
  content: '|';
  color: var(--accent-1);
  animation: cursor-blink 0.9s infinite step-start;
  margin-left: 2px;
}

@keyframes cursor-blink {
  50% {
    opacity: 0;
  }
}

.hero-buttons {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

/* Hero Image & Blob */
.hero-image-wrap {
  flex: 0.9;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container-outer {
  position: relative;
  width: 100%;
  max-width: 360px;
}

.image-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  box-shadow: 0 0 35px rgba(16, 185, 129, 0.35);
  border: 4px solid var(--accent-1);
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  transition: all 0.5s ease;
}

.bubble-shape {
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  animation: blob 9s ease-in-out infinite alternate;
}

@keyframes blob {
  0% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    transform: rotate(0deg);
  }
  50% {
    border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
  }
  100% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    transform: rotate(3deg);
  }
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Floating Badge */
.floating-badge {
  position: absolute;
  bottom: -15px;
  right: -10px;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  padding: 0.75rem 1.25rem;
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  animation: float 4s ease-in-out infinite;
  z-index: 2;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.badge-icon {
  font-size: 1.5rem;
  color: var(--accent-1);
}

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

.badge-text strong {
  font-size: 1rem;
  color: var(--text-main);
  line-height: 1.2;
}

.badge-text span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Cards (Glassmorphism)
   ========================================================================== */

.card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.2rem;
  box-shadow: var(--subtle-shadow);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

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

/* About Card */
.about-card {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 900px;
  margin: 0 auto;
}

.about-card p strong {
  color: var(--text-main);
}

/* ==========================================================================
   Skills Section
   ========================================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1.2rem;
  max-width: 950px;
  margin: 0 auto;
}

.skill-badge {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: var(--glass-blur);
  padding: 1.2rem 1rem;
  border-radius: 14px;
  text-align: center;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: var(--subtle-shadow);
}

.skill-badge:hover {
  background: var(--card-hover-bg);
  border-color: var(--accent-1);
  color: var(--accent-1);
  transform: translateY(-5px) scale(1.03);
  box-shadow: var(--glow-shadow);
}

/* ==========================================================================
   Experience Timeline Section
   ========================================================================== */

.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background: var(--timeline-line);
  top: 20px;
  bottom: 20px;
  left: 20px;
  border-radius: 2px;
}

.timeline-item {
  padding: 1rem 0 1.5rem 55px;
  position: relative;
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 12px;
  top: 26px;
  background: var(--accent-1);
  border: 4px solid var(--bg-color);
  box-shadow: 0 0 10px var(--accent-1);
  border-radius: 50%;
  z-index: 2;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.timeline-content {
  padding: 2rem;
}

.timeline-content h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.timeline-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 20px;
  color: var(--accent-3);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.timeline-content ul {
  list-style-type: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.timeline-content li {
  position: relative;
  padding-left: 1.6rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

.timeline-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-1);
  font-weight: bold;
}

/* ==========================================================================
   Projects Section
   ========================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all 0.35s ease;
}

.project-card:hover {
  transform: translateY(-8px);
}

.project-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.85rem;
  color: var(--text-main);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
}

.tech-stack span {
  font-size: 0.78rem;
  font-family: 'Fira Code', monospace;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  color: var(--tag-color);
  font-weight: 500;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.65;
  flex-grow: 1;
}

/* ==========================================================================
   Achievements / Impact Section
   ========================================================================== */

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.achievement-card {
  padding: 2.2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.achievement-number {
  font-size: 3.2rem;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  color: var(--accent-1);
  margin-bottom: 0.4rem;
  line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.achievement-card p {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 500;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-container {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
  padding: 3rem 2rem;
}

.contact-intro {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

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

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  color: var(--text-main);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: var(--subtle-shadow);
}

.contact-link:hover {
  background: var(--card-hover-bg);
  border-color: var(--accent-1);
  color: var(--accent-1);
  transform: translateY(-3px);
  box-shadow: var(--glow-shadow);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  text-align: center;
  padding: 2.5rem 0;
  color: var(--text-dim);
  border-top: 1px solid var(--card-border);
  margin-top: 4rem;
  font-size: 0.95rem;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Modal / Download Popup
   ========================================================================== */

.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  padding: 1.5rem;
}

.popup-overlay.show {
  opacity: 1;
  visibility: visible;
}

.popup-content {
  background: var(--popup-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 2px solid var(--accent-1);
  padding: 3.5rem 2.5rem;
  text-align: center;
  max-width: 440px;
  width: 100%;
  box-shadow: var(--glow-shadow);
  transform: scale(0.85) translateY(20px);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  color: var(--text-main);
  position: relative;
}

.popup-overlay.show .popup-content {
  transform: scale(1) translateY(0);
}

.popup-sparkle {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.popup-title {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
  color: var(--text-main);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.popup-desc {
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.popup-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* ==========================================================================
   Back to Top & Toast
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--accent-1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  box-shadow: var(--subtle-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: all 0.3s ease;
}

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

.back-to-top:hover {
  background: var(--accent-1);
  color: #031d17;
  box-shadow: var(--glow-shadow);
  transform: translateY(-4px);
}

.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--popup-bg);
  border: 1px solid var(--accent-1);
  color: var(--text-main);
  padding: 0.8rem 1.6rem;
  border-radius: 30px;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: var(--glow-shadow);
  z-index: 3000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 992px) {
  .hero-headline {
    font-size: 2.5rem;
  }

  .hero-wrapper {
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4.5rem 0;
  }

  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero {
    padding-top: 110px;
    text-align: center;
  }

  .hero-wrapper {
    flex-direction: column-reverse;
    gap: 3rem;
  }

  .hero-headline {
    font-size: 2.15rem;
  }

  .hero-subtext {
    font-size: 1.15rem;
    justify-content: center;
  }

  .hero-buttons {
    justify-content: center;
  }

  .image-container-outer {
    max-width: 280px;
  }

  .floating-badge {
    bottom: -10px;
    right: 0;
    padding: 0.6rem 1rem;
  }

  .timeline::after {
    left: 15px;
  }

  .timeline-item {
    padding-left: 45px;
  }

  .timeline-item::after {
    left: 7px;
  }

  .contact-links {
    flex-direction: column;
    width: 100%;
  }

  .contact-link {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 1.85rem;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .card {
    padding: 1.5rem;
  }

  .popup-content {
    padding: 2.5rem 1.5rem;
  }
}