/* 
  =========================================
  PREMIUM DEVELOPER PORTFOLIO - DESIGN SYSTEM
  Created with Vanilla CSS & Fluid Typography
  =========================================
*/

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* --- Root Variables & Theme System --- */
:root {
  /* Common System Settings */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-full: 9999px;
  --container-max-width: 1200px;
  --section-padding: clamp(4rem, 8vw, 8rem);

  /* Dark Theme Variables (Default) */
  --bg-primary: #080c14;
  --bg-secondary: #0d1321;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #00f2fe; /* Cyber Cyan */
  --accent-secondary: #7f00ff; /* Electric Purple */
  --accent-glow: rgba(0, 242, 254, 0.15);
  --card-bg: rgba(13, 19, 33, 0.45);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-hover: rgba(0, 242, 254, 0.3);
  --nav-bg: rgba(8, 12, 20, 0.7);
  --gradient-hero: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #7f00ff 100%);
  --gradient-text: linear-gradient(135deg, #f8fafc 30%, #94a3b8 100%);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
  --scroll-bar-thumb: #1e293b;
}

[data-theme="light"] {
  /* Light Theme Variables */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --accent-primary: #3b82f6; /* Royal Blue */
  --accent-secondary: #8b5cf6; /* Indigo */
  --accent-glow: rgba(59, 130, 246, 0.15);
  --card-bg: rgba(255, 255, 255, 0.65);
  --card-border: rgba(15, 23, 42, 0.08);
  --card-border-hover: rgba(59, 130, 246, 0.3);
  --nav-bg: rgba(248, 250, 252, 0.75);
  --gradient-hero: linear-gradient(135deg, #3b82f6 0%, #6366f1 50%, #8b5cf6 100%);
  --gradient-text: linear-gradient(135deg, #0f172a 30%, #475569 100%);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08);
  --scroll-bar-thumb: #cbd5e1;
}

/* --- Base Resets & Global Styles --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

button, input, textarea {
  font-family: inherit;
  background: none;
  border: none;
  outline: none;
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--scroll-bar-thumb);
  border-radius: var(--border-radius-full);
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- Utilities & Layouts --- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.glass {
  background: var(--card-bg);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal), background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-interactive:hover {
  border-color: var(--card-border-hover);
  box-shadow: 0 12px 30px -10px var(--accent-glow), var(--shadow-lg);
  transform: translateY(-4px);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.btn-primary {
  background: var(--gradient-hero);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background: var(--card-bg);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}
.btn-secondary:active {
  transform: translateY(0);
}

/* --- Section Headings --- */
.section-header {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}
.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}
.section-header p {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Navigation Bar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.2rem 0;
  background: transparent;
  transition: padding var(--transition-normal), background-color var(--transition-normal);
}
.navbar.scrolled {
  padding: 0.8rem 0;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: var(--border-radius-full);
  display: inline-block;
  box-shadow: 0 0 10px var(--accent-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-fast);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

/* Theme Toggle Button */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
}
.theme-toggle:hover {
  background: var(--card-bg);
  transform: scale(1.05);
}
.theme-toggle svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition-normal);
}
[data-theme="light"] .sun-icon {
  display: none;
}
[data-theme="dark"] .moon-icon {
  display: none;
}

/* Hamburger Menu Button */
.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: 1001;
}
.menu-btn span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 100px;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 3rem;
  z-index: 2;
  position: relative;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-tag {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--accent-primary);
  font-size: 1rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-glow);
  padding: 0.4rem 1rem;
  border-radius: var(--border-radius-full);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 1rem;
}
.hero h1 span.name {
  color: var(--accent-primary);
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.8rem);
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.typing-text::after {
  content: '|';
  color: var(--accent-primary);
  animation: blink 0.8s infinite;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  max-width: 550px;
  margin-bottom: 2.5rem;
}

.hero-btns {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.hero-socials span {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.social-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-full);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}
.social-icon:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}
.social-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Hero Right Side Graphics */
.hero-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.portrait-container {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  position: relative;
  z-index: 2;
}
.portrait-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110%;
  height: 110%;
  background: radial-gradient(circle, var(--accent-glow) 0%, rgba(0, 0, 0, 0) 70%);
  z-index: -1;
  pointer-events: none;
}
.portrait-mesh {
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--card-border);
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.05), transparent), var(--card-bg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.portrait-mesh svg {
  width: 70%;
  height: 70%;
  color: var(--accent-primary);
  opacity: 0.8;
  filter: drop-shadow(0 0 15px var(--accent-primary));
  animation: float 6s ease-in-out infinite;
}

/* Floating Badges */
.floating-badge {
  position: absolute;
  padding: 0.75rem 1.2rem;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}
.badge-1 {
  top: 15%;
  left: -15%;
  animation-delay: 0s;
}
.badge-2 {
  bottom: 15%;
  right: -10%;
  animation-delay: 3s;
}
.badge-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  background: var(--accent-glow);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.badge-text span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.badge-text strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* --- About Me Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: start;
}

.about-content h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}
.about-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.stat-card {
  padding: 1.5rem;
  text-align: center;
}
.stat-num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-primary);
  font-family: var(--font-heading);
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Sleek Animated Timeline */
.timeline-title {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.timeline-title svg {
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
}
.timeline {
  position: relative;
  padding-left: 1.5rem;
  border-left: 2px solid var(--card-border);
}
.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}
.timeline-item:last-child {
  margin-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: -24px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: var(--border-radius-full);
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 8px var(--accent-primary);
}
.timeline-time {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
  display: block;
}
.timeline-header {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.timeline-header span {
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --- Skills Section --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.skills-category {
  padding: 2rem;
}
.skills-category h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.75rem;
}
.skills-category h3 svg {
  width: 20px;
  height: 20px;
  color: var(--accent-primary);
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.skill-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.skill-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}
.skill-pct {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.skill-bar-bg {
  width: 100%;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-full);
  overflow: hidden;
  position: relative;
}
.skill-bar-fill {
  height: 100%;
  background: var(--gradient-hero);
  border-radius: var(--border-radius-full);
  width: 0%; /* Populates dynamically or animate on scroll */
  transition: width 1.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- Projects Section --- */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.filter-btn:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}
.filter-btn.active {
  background: var(--gradient-hero);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

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

.project-card {
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.project-img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--card-bg) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--card-border);
}
.project-img-wrapper svg {
  width: 45%;
  height: 45%;
  color: var(--accent-primary);
  opacity: 0.7;
  transition: transform var(--transition-slow), opacity var(--transition-fast);
}
.project-card:hover .project-img-wrapper svg {
  transform: scale(1.1) rotate(3deg);
  opacity: 0.95;
}

/* Grid Overlay */
.project-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, transparent 30%, rgba(8, 12, 20, 0.9) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 1.25rem;
  z-index: 2;
}
.project-card:hover .project-img-overlay {
  opacity: 1;
}
.project-overlay-links {
  display: flex;
  gap: 0.75rem;
}

.project-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.project-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent-primary);
  background: var(--accent-glow);
  padding: 0.2rem 0.6rem;
  border-radius: var(--border-radius-full);
}
.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}
.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}
.project-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: auto;
}
.project-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}
.project-link:hover {
  color: var(--accent-primary);
}
.project-link svg {
  width: 16px;
  height: 16px;
}

/* --- Contact Hub --- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.contact-heading h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}
.contact-heading p {
  color: var(--text-secondary);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.contact-card {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-md);
  background: var(--accent-glow);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}
.contact-details span {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.15rem;
}
.contact-details strong {
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Contact Form */
.contact-form {
  padding: 2.5rem;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.form-group-full {
  grid-column: span 2;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.form-input-wrapper {
  position: relative;
  width: 100%;
}
.form-input {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border-radius: var(--border-radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}
textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

/* Form Helper and Button Styles */
.form-status {
  margin-top: 1rem;
  padding: 0.75rem 1.2rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  display: none;
  font-weight: 500;
}
.form-status.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10b981;
  display: block;
}
.form-status.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  display: block;
}

/* --- Footer --- */
.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--card-border);
  background: var(--bg-secondary);
}
.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.footer-links a:hover {
  color: var(--accent-primary);
}

/* --- Back to Top & Floating Actions --- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  z-index: 99;
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  transform: translateY(-4px);
}
.back-to-top svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Interactive Scroll Effects & Reveal Class --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Delay modifiers for stagger reveal */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

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

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

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 4rem;
    padding-top: 40px;
  }
  .hero-content {
    align-items: center;
  }
  .hero-btns {
    justify-content: center;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-socials {
    justify-content: center;
  }
  .hero-graphic {
    order: -1;
  }
  .portrait-container {
    max-width: 320px;
  }
  .badge-1 {
    left: -10%;
  }
  .badge-2 {
    right: -5%;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--card-border);
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
    z-index: 1000;
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }
  .nav-links.active {
    right: 0;
  }

  .menu-btn {
    display: flex;
  }

  /* Hamburger transform when menu open */
  .menu-btn.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-btn.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-btn.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

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

  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group-full {
    grid-column: span 1;
  }
  .contact-form {
    padding: 1.5rem;
  }
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.2rem;
  }
  .hero-btns {
    flex-direction: column;
    width: 100%;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .badge-1, .badge-2 {
    display: none; /* Hide floating badges on very small phones to avoid clutter */
  }
}