/* ==========================================================================
   DESIGN SYSTEM & CONSTANTS
   ========================================================================== */
:root {
  /* Colors */
  --bg-dark: #0a0b10;
  --bg-darker: #050608;
  --bg-card: rgba(13, 14, 21, 0.65);
  --bg-card-hover: rgba(20, 22, 33, 0.8);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(255, 255, 255, 0.15);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-cyan: #00f2fe;
  --accent-cyan-glow: rgba(0, 242, 254, 0.3);
  --accent-purple: #9b51e0;
  --accent-purple-glow: rgba(155, 81, 224, 0.3);
  --accent-blue: #3b82f6;
  --accent-blue-glow: rgba(59, 130, 246, 0.3);
  
  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  
  /* Layout Spacing */
  --header-height-large: 90px;
  --header-height-small: 65px;
  --section-padding: 100px 0;
  --max-width: 1200px;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-purple) var(--bg-dark);
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
  background: var(--border-glass-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-purple);
}

/* Background Effects */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.glow-orb {
  position: fixed;
  width: 40vw;
  height: 40vw;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -2;
  opacity: 0.15;
  pointer-events: none;
  animation: float-orbs 20s infinite alternate ease-in-out;
}

#glow-orb-1 {
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
  top: -10%;
  left: -10%;
}

#glow-orb-2 {
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
  bottom: -10%;
  right: -10%;
  animation-delay: -10s;
}

@keyframes float-orbs {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(8%, 8%) scale(1.1); }
}

/* ==========================================================================
   TYPOGRAPHY & UTILITIES
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

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

ul {
  list-style: none;
}

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

.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.section-header {
  margin-bottom: 60px;
  text-align: center;
}

.section-subtitle {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-underline {
  height: 4px;
  width: 60px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  margin: 16px auto 0;
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  color: #050608;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.2);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(155, 81, 224, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

.btn-icon {
  width: 18px;
  height: 18px;
  transition: var(--transition-fast);
}

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

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height-large);
  border-bottom: 1px solid transparent;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.05em;
  display: flex;
  align-items: center;
}

.logo-accent {
  color: var(--accent-cyan);
  font-weight: 500;
}

.nav-menu ul {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transition: var(--transition-fast);
}

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

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

.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Native CSS Scroll-Driven shrinking header --- */
@supports ((animation-timeline: scroll()) and (animation-range: 0% 100%)) {
  @keyframes shrink-header {
    to {
      height: var(--header-height-small);
      background-color: rgba(10, 11, 16, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }
  }

  .main-header {
    animation: shrink-header auto linear both;
    animation-timeline: scroll(root);
    animation-range: 0px 100px;
  }
}

/* Fallback class added by JavaScript if scroll-driven animation is unsupported */
.main-header.scrolled-fallback {
  height: var(--header-height-small);
  background-color: rgba(10, 11, 16, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--header-height-large);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 24px;
  font-family: var(--font-heading);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  margin-right: 8px;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 242, 254, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 43px; /* Prevent layout shift during typing */
}

.cursor {
  font-weight: 100;
  color: var(--accent-cyan);
  animation: blink 0.8s infinite;
}

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

.hero-description {
  font-size: 1.1rem;
  margin-bottom: 40px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

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

.avatar-wrapper {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-image {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--bg-dark);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  z-index: 2;
}

.avatar-ring {
  position: absolute;
  border-radius: 50%;
  z-index: 1;
}

.ring-1 {
  width: 300px;
  height: 300px;
  border: 2px dashed var(--accent-cyan);
  opacity: 0.4;
  animation: rotate-clockwise 30s linear infinite;
}

.ring-2 {
  width: 310px;
  height: 310px;
  border: 2px solid transparent;
  border-top-color: var(--accent-purple);
  border-bottom-color: var(--accent-cyan);
  opacity: 0.8;
  animation: rotate-counter 20s linear infinite;
}

@keyframes rotate-clockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotate-counter {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mouse-icon {
  width: 26px;
  height: 40px;
  border: 2px solid var(--text-secondary);
  border-radius: 20px;
  display: block;
  position: relative;
  opacity: 0.6;
  transition: var(--transition-fast);
}

.mouse-icon:hover {
  opacity: 1;
  border-color: var(--accent-cyan);
}

.mouse-wheel {
  width: 4px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-wheel 1.5s infinite;
}

@keyframes scroll-wheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 15px); }
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-section {
  padding: var(--section-padding);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: start;
}

.about-heading {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.about-text-content p {
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: var(--transition-smooth);
}

.stat-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 242, 254, 0.05);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 30px;
  backdrop-filter: blur(12px);
}

.info-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.card-icon {
  width: 24px;
  height: 24px;
}

.card-icon.cyan { color: var(--accent-cyan); }
.card-icon.purple { color: var(--accent-purple); }
.card-icon.blue { color: var(--accent-blue); }

.info-card h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

.timeline-list {
  position: relative;
  padding-left: 20px;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 1px;
}

.timeline-list li {
  position: relative;
  margin-bottom: 28px;
}

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

.timeline-list li::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--bg-dark);
  border: 2px solid var(--accent-cyan);
}

.timeline-list li:nth-child(2)::before {
  border-color: var(--accent-purple);
}

.timeline-list li:nth-child(3)::before {
  border-color: var(--accent-blue);
}

.timeline-date {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}

.timeline-content h5 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-content p {
  font-size: 0.9rem;
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-section {
  padding: var(--section-padding);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.skills-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 35px;
  backdrop-filter: blur(12px);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.skills-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.skills-card:nth-child(1):hover { border-color: var(--accent-cyan); }
.skills-card:nth-child(2):hover { border-color: var(--accent-purple); }
.skills-card:nth-child(3):hover { border-color: var(--accent-blue); }

.skills-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.skills-card-header h3 {
  font-size: 1.25rem;
}

.skills-card-desc {
  font-size: 0.95rem;
  margin-bottom: 28px;
}

.skills-list {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font-heading);
}

.skill-bar-bg {
  height: 6px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.skill-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.skills-card:nth-child(1) .skill-bar-fill {
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
}

.skills-card:nth-child(2) .skill-bar-fill {
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
}

.skills-card:nth-child(3) .skill-bar-fill {
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-section {
  padding: var(--section-padding);
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 50px;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: 30px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-glass-hover);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-darker);
  border-color: var(--text-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  opacity: 1;
  transform: scale(1);
}

.project-card.hidden {
  display: none;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.project-image-container {
  height: 200px;
  position: relative;
  overflow: hidden;
}

.project-gradient-overlay {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transition: var(--transition-smooth);
}

.p1-grad {
  background: linear-gradient(135deg, #020024 0%, #090979 35%, #00d4ff 100%);
}

.p2-grad {
  background: linear-gradient(135deg, #4b0082 0%, #9400d3 50%, #ee82ee 100%);
}

.p3-grad {
  background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
}

.project-card:hover .project-gradient-overlay {
  transform: scale(1.05);
}

.project-image-caption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 5;
}

.project-tag {
  background: rgba(10, 11, 16, 0.75);
  border: 1px solid var(--border-glass);
  padding: 4px 12px;
  border-radius: 30px;
  font-size: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 500;
  backdrop-filter: blur(4px);
}

.project-info {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-info h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.project-info p {
  font-size: 0.9rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.project-links {
  display: flex;
  gap: 20px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.project-link i {
  width: 14px;
  height: 14px;
  transition: var(--transition-fast);
}

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

.project-link:hover i {
  transform: translateY(-2px) translateX(2px);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
  padding: var(--section-padding);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}

.contact-info-panel h3 {
  font-size: 2rem;
  margin-bottom: 16px;
  max-width: 400px;
}

.contact-info-panel p {
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 40px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-detail-item i {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  padding: 10px;
}

.contact-detail-item i.cyan { color: var(--accent-cyan); box-shadow: 0 4px 15px rgba(0, 242, 254, 0.05); }
.contact-detail-item i.purple { color: var(--accent-purple); box-shadow: 0 4px 15px rgba(155, 81, 224, 0.05); }

.contact-detail-item h5 {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.contact-detail-item p, .contact-detail-item a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

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

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.social-links a:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.05);
  color: var(--accent-cyan);
  box-shadow: 0 10px 25px rgba(0, 242, 254, 0.1);
}

.social-links a:nth-child(2):hover {
  border-color: var(--accent-purple);
  background: rgba(155, 81, 224, 0.05);
  color: var(--accent-purple);
  box-shadow: 0 10px 25px rgba(155, 81, 224, 0.1);
}

.contact-form-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.form-group {
  margin-bottom: 24px;
}

.input-container {
  position: relative;
  width: 100%;
}

.input-container input, .input-container textarea {
  width: 100%;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-fast);
  outline: none;
}

.input-container textarea {
  resize: vertical;
}

.input-container label {
  position: absolute;
  left: 20px;
  top: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  pointer-events: none;
  transform-origin: 0 0;
}

/* Floating labels effect using pseudo classes */
.input-container input:focus ~ label,
.input-container input:not(:placeholder-shown) ~ label,
.input-container textarea:focus ~ label,
.input-container textarea:not(:placeholder-shown) ~ label {
  transform: translateY(-26px) scale(0.8);
  color: var(--accent-cyan);
}

/* Border animation overlay */
.focus-border {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transition: var(--transition-smooth);
}

.input-container input:focus ~ .focus-border,
.input-container textarea:focus ~ .focus-border {
  width: 100%;
  left: 0;
}

.input-container input:focus, .input-container textarea:focus {
  border-color: transparent;
  background: rgba(255, 255, 255, 0.04);
}

.error-msg {
  color: #ff4d4d;
  font-size: 0.75rem;
  margin-top: 6px;
  display: none;
  font-weight: 500;
}

/* Invalid inputs styling */
.form-group.invalid .input-container input,
.form-group.invalid .input-container textarea {
  border-color: #ff4d4d;
}
.form-group.invalid .error-msg {
  display: block;
}

/* Success Modal Overlay */
.status-modal {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 11, 16, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  padding: 30px;
  transition: var(--transition-smooth);
}

.status-modal.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.95);
}

.status-modal-content {
  text-align: center;
  max-width: 320px;
}

.success-icon {
  width: 60px;
  height: 60px;
  color: var(--accent-cyan);
  margin-bottom: 20px;
  animation: scaleUp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scaleUp {
  from { transform: scale(0); }
}

.status-modal-content h4 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.status-modal-content p {
  font-size: 0.9rem;
  margin-bottom: 24px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-glass);
  padding: 40px 0;
  background: var(--bg-darker);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.back-to-top {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-secondary);
}

.back-to-top:hover {
  color: var(--accent-cyan);
}

.back-to-top i {
  width: 16px;
  height: 16px;
  transition: var(--transition-fast);
}

.back-to-top:hover i {
  transform: translateY(-4px);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS (PROGRESSIVE ENHANCEMENT)
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  @supports ((animation-timeline: view()) and (animation-range: entry)) {
    @keyframes reveal-up {
      from {
        opacity: 0;
        transform: translateY(40px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .scroll-reveal {
      animation: reveal-up auto linear both;
      animation-timeline: view();
      animation-range: entry 10% entry 40%;
    }
  }
}

/* Fallback styles when scroll-driven animations are not supported, toggled via JS */
.scroll-reveal.reveal-fallback {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.reveal-fallback.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .skills-grid, .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-visual {
    order: -1;
    margin-bottom: 20px;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .skills-grid, .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-container {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  
  /* Mobile Menu navigation toggling */
  .mobile-nav-toggle {
    display: block;
    z-index: 1100;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 11, 16, 0.95);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-glass);
    padding: 100px 40px;
    transition: var(--transition-smooth);
    z-index: 1050;
  }
  
  .nav-menu.open {
    right: 0;
  }
  
  .nav-menu ul {
    flex-direction: column;
    gap: 24px;
  }
  
  .nav-link {
    font-size: 1.2rem;
  }
  
  .avatar-wrapper {
    width: 260px;
    height: 260px;
  }
  
  .avatar-image {
    width: 220px;
    height: 220px;
  }
  
  .ring-1 {
    width: 240px;
    height: 240px;
  }
  
  .ring-2 {
    width: 250px;
    height: 250px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.4rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }
  
  .contact-form-panel {
    padding: 24px;
  }
}