/* ================================================================
   AKHIL DAXO — MERN STACK DEVELOPER PORTFOLIO
   style.css | Premium Dark Theme
================================================================ */

/* ================================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
================================================================ */
:root {
  /* Background */
  --bg-primary: #0a0f1e;
  --bg-secondary: #0d1629;
  --bg-card: #111827;
  --bg-card-hover: #141f35;

  /* Accent */
  --accent: #00ffcc;
  --accent-dim: rgba(0, 255, 204, 0.12);
  --accent-glow: rgba(0, 255, 204, 0.35);
  --accent-2: #7c3aed;

  /* Text */
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #4b5563;

  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 255, 204, 0.3);

  /* Navbar */
  --nav-bg: rgba(10, 15, 30, 0.92);
  --nav-height: 68px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
  --shadow-accent: 0 0 30px rgba(0, 255, 204, 0.18);

  /* Typography */
  --font-main: 'Inter', system-ui, sans-serif;
  --font-code: 'Fira Code', 'Courier New', monospace;

  /* Transitions */
  --t-fast: 0.2s ease;
  --t-med: 0.35s ease;

  /* Radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 9999px;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-primary: #f4f7fb;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #eef2f8;
  --text-primary: #0d1117;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --border: rgba(0, 0, 0, 0.09);
  --nav-bg: rgba(244, 247, 251, 0.95);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

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

img {
  max-width: 100%;
  display: block;
}

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

ul {
  list-style: none;
}

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

input,
textarea {
  font-family: inherit;
}

/* ================================================================
   3. UTILITIES
================================================================ */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 100px 0;
}

.accent {
  color: var(--accent);
}

.hidden {
  display: none !important;
}

/* ================================================================
   4. PAGE LOADER
================================================================ */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.loader-ring {
  width: 52px;
  height: 52px;
  border: 3px solid rgba(0, 255, 204, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
}

.loader-text {
  font-family: var(--font-code);
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  animation: subtlePulse 1.4s ease-in-out infinite;
}

/* ================================================================
   5. NAVBAR
================================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow var(--t-med);
}

.navbar.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* Logo */
.logo {
  font-family: var(--font-code);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  transition: color var(--t-fast);
}

.logo-bracket {
  color: var(--accent);
}

.logo:hover {
  color: var(--accent);
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  position: relative;
  padding: 0.45rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--r-sm);
  transition: color var(--t-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 75%;
  height: 2px;
  background: var(--accent);
  border-radius: var(--r-full);
  transition: transform var(--t-med);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-full);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: all var(--t-fast);
}

.theme-toggle:hover {
  background: var(--accent-dim);
  border-color: var(--border-accent);
  color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 8px;
  border-radius: var(--r-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--t-med), opacity var(--t-med);
  transform-origin: center;
}

.hamburger.open .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open .bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ================================================================
   6. BUTTONS
================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.55rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--r-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.07);
  opacity: 0;
  transition: opacity var(--t-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn--primary {
  background: var(--accent);
  color: #0a0f1e;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 255, 204, 0.28);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 255, 204, 0.48);
}

.btn--outline {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent);
}

.btn--outline:hover {
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.btn--ghost {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-secondary);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ================================================================
   7. SECTION HEADERS
================================================================ */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-line {
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: var(--r-full);
  margin: 0 auto;
}

/* ================================================================
   8. SCROLL ANIMATIONS
================================================================ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for skill cards */
.skills-grid .skill-card:nth-child(1) {
  transition-delay: 0.05s;
}

.skills-grid .skill-card:nth-child(2) {
  transition-delay: 0.10s;
}

.skills-grid .skill-card:nth-child(3) {
  transition-delay: 0.15s;
}

.skills-grid .skill-card:nth-child(4) {
  transition-delay: 0.20s;
}

.skills-grid .skill-card:nth-child(5) {
  transition-delay: 0.25s;
}

.skills-grid .skill-card:nth-child(6) {
  transition-delay: 0.30s;
}

.skills-grid .skill-card:nth-child(7) {
  transition-delay: 0.35s;
}

.skills-grid .skill-card:nth-child(8) {
  transition-delay: 0.40s;
}

/* ================================================================
   9. HERO SECTION
================================================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 1.5rem 80px;
  overflow: hidden;
}

.particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}

.hero-orb--1 {
  width: 550px;
  height: 550px;
  background: rgba(0, 255, 204, 0.05);
  top: -180px;
  right: -160px;
  animation: floatOrb 9s ease-in-out infinite;
}

.hero-orb--2 {
  width: 420px;
  height: 420px;
  background: rgba(124, 58, 237, 0.07);
  bottom: -120px;
  left: -160px;
  animation: floatOrb 11s ease-in-out infinite reverse;
}

.hero-container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  text-align: center;
  max-width: 720px;
  width: 100%;
}

/* Profile Photo */
.hero-photo-wrapper {
  position: relative;
  width: 185px;
  height: 185px;
  flex-shrink: 0;
}

.hero-photo-ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0.45;
  animation: ringPulse 3s ease-in-out infinite;
}

.hero-photo-ring--2 {
  inset: -22px;
  border-color: rgba(0, 255, 204, 0.18);
  animation-delay: 0.6s;
  animation-duration: 4.2s;
}

.hero-photo {
  width: 185px;
  height: 185px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: 0 0 45px var(--accent-glow), var(--shadow-lg);
  transition: transform var(--t-med), box-shadow var(--t-med);
}

.hero-photo:hover {
  transform: scale(1.04);
  box-shadow: 0 0 65px var(--accent-glow), var(--shadow-lg);
}

/* Hero Text */
.hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.hero-greeting {
  font-size: 1rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.hero-name {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, var(--text-primary) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Typing */
.typing-wrapper {
  font-size: clamp(1rem, 3vw, 1.25rem);
  font-family: var(--font-code);
  color: var(--text-secondary);
  min-height: 2em;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: center;
}

.typing-text {
  color: var(--accent);
  font-weight: 600;
}

.typing-cursor {
  color: var(--accent);
  animation: blink 0.75s step-end infinite;
}

.hero-tagline {
  font-size: clamp(0.95rem, 2vw, 1.08rem);
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.75;
}

/* CTA */
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: center;
  margin-top: 0.5rem;
}

/* Socials */
.hero-socials {
  display: flex;
  gap: 0.9rem;
  margin-top: 0.5rem;
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-full);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.05rem;
  transition: all var(--t-fast);
}

.social-link:hover {
  background: var(--accent-dim);
  border-color: var(--border-accent);
  color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 255, 204, 0.18);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-dot {
  width: 27px;
  height: 44px;
  border: 2px solid rgba(0, 255, 204, 0.45);
  border-radius: 14px;
  position: relative;
}

.scroll-dot::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}

/* ================================================================
   10. ABOUT SECTION
================================================================ */
.about-section {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 2.5rem;
  transition: border-color var(--t-med), box-shadow var(--t-med);
}

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

.about-card__icon {
  width: 52px;
  height: 52px;
  background: var(--accent-dim);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.about-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.about-card p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-card strong {
  color: var(--accent);
  font-weight: 600;
}

/* Stats */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--t-med);
}

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

.stat-number {
  display: block;
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Pillars */
.about-pillars {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.pillar {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.5rem;
  transition: all var(--t-med);
}

.pillar:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 255, 204, 0.08);
}

.pillar>i {
  font-size: 1.4rem;
  color: var(--accent);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.pillar h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.pillar p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ================================================================
   11. SKILLS SECTION
================================================================ */
.skills-section {
  background: var(--bg-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 2rem;
  cursor: default;
  transition: all var(--t-med);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--skill-color, var(--accent));
  transform: scaleX(0);
  transition: transform var(--t-med);
  transform-origin: left;
}

.skill-card:hover,
.skill-card:focus {
  border-color: rgba(255, 255, 255, 0.14);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  outline: none;
}

.skill-card:hover::before,
.skill-card:focus::before {
  transform: scaleX(1);
}

.skill-card__icon {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.04);
  font-size: 1.9rem;
  color: var(--skill-color, var(--accent));
  margin-bottom: 1rem;
  transition: transform var(--t-med);
}

.skill-card:hover .skill-card__icon {
  transform: scale(1.1) rotate(-4deg);
}

.skill-card__name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.skill-card__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.skill-bar {
  height: 5px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--r-full);
  overflow: hidden;
  margin-bottom: 0.4rem;
}

.skill-bar__fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--skill-color, var(--accent)), rgba(255, 255, 255, 0.55));
  border-radius: var(--r-full);
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-bar__label {
  font-size: 0.74rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}

/* ================================================================
   12. PROJECTS SECTION
================================================================ */
.projects-section {
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  min-height: 80px;
}

/* Project Card */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--t-med);
  animation: fadeSlideUp 0.5s ease both;
}

.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), var(--shadow-accent);
}

.project-card__img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.project-card__placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: all var(--t-med);
}

.project-card__placeholder i {
  font-size: 2.6rem;
  color: var(--accent);
  opacity: 0.5;
  transition: opacity var(--t-med), transform var(--t-med);
}

.project-card:hover .project-card__placeholder i {
  opacity: 0.8;
  transform: scale(1.1);
}

.project-card__body {
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.75rem;
}

.project-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.stack-tag {
  display: inline-block;
  padding: 0.22rem 0.65rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: var(--r-full);
  font-size: 0.71rem;
  font-family: var(--font-code);
  font-weight: 500;
  border: 1px solid rgba(0, 255, 204, 0.15);
}

.project-card__links {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.4rem;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  transition: color var(--t-fast), gap var(--t-fast);
}

.project-card__link:hover {
  color: #fff;
  gap: 0.65rem;
}

.project-card__link i {
  font-size: 0.88rem;
}

/* ================================================================
   13. CONTACT SECTION
================================================================ */
.contact-section {
  background: var(--bg-primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.contact-info>p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

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

.contact-detail__icon {
  width: 44px;
  height: 44px;
  background: var(--accent-dim);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-detail h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.25rem;
}

.contact-detail a,
.contact-detail p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--t-fast);
}

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

.contact-socials {
  display: flex;
  gap: 0.75rem;
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.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-group label span {
  color: var(--accent);
}

.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 204, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.field-error {
  font-size: 0.78rem;
  color: #ef4444;
  min-height: 1.2em;
}

/* Status messages */
.form-status {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--r-md);
  animation: fadeSlideDown 0.3s ease;
}

.form-status i {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.form-status strong {
  display: block;
  margin-bottom: 0.2rem;
}

.form-status p {
  font-size: 0.85rem;
  opacity: 0.8;
}

.form-status--success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #10b981;
}

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

/* ================================================================
   14. FOOTER
================================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-logo {
  font-size: 1.1rem;
}

.footer-copy {
  font-size: 0.84rem;
  color: var(--text-muted);
}

.footer-socials {
  display: flex;
  gap: 0.6rem;
}

/* ================================================================
   15. BACK TO TOP
================================================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  background: var(--accent);
  color: #0a0f1e;
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(0, 255, 204, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--t-med);
  z-index: 900;
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 255, 204, 0.5);
}

/* ================================================================
   16. KEYFRAMES
================================================================ */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes subtlePulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

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

@keyframes ringPulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.45;
  }

  50% {
    transform: scale(1.06);
    opacity: 0.18;
  }
}

@keyframes floatOrb {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(35px, 28px);
  }
}

@keyframes scrollBounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

@keyframes scrollDot {
  0% {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }

  100% {
    transform: translateX(-50%) translateY(14px);
    opacity: 0;
  }
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeSlideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================================================
   17. RESPONSIVE — TABLET (≤ 900px)
================================================================ */
@media (max-width: 900px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform var(--t-med);
    z-index: 999;
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .nav-link {
    padding: 0.9rem 2rem;
    width: 100%;
    text-align: center;
    border-radius: 0;
  }

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

  .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .about-pillars {
    grid-column: 1;
    grid-template-columns: 1fr;
  }

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

/* ================================================================
   18. RESPONSIVE — MOBILE (≤ 600px)
================================================================ */
@media (max-width: 600px) {
  .section {
    padding: 70px 0;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta .btn {
    justify-content: center;
  }

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

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

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

  .contact-form {
    padding: 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero-name {
    font-size: 2rem;
  }
}