/* ============================================================================
   WILLIAM LAWAL — PORTFOLIO
   Modern Black-and-White Design System with Premium Animations
   ============================================================================ */

/* CSS VARIABLES: Color Palette, Typography, Spacing, Timing */
:root {
  /* Color Palette */
  --color-black: #000000;
  --color-white: #ffffff;
  --color-dark-grey: #0f0f0f;
  --color-grey-900: #1a1a1a;
  --color-grey-800: #2a2a2a;
  --color-grey-700: #3d3d3d;
  --color-grey-600: #525252;
  --color-grey-500: #6b6b6b;
  --color-grey-400: #8b8b8b;
  --color-grey-300: #a8a8a8;
  --color-grey-200: #d1d1d1;
  --color-grey-100: #e8e8e8;
  --color-off-white: #f7f7f7;

  /* Gradients */
  --gradient-dark: linear-gradient(135deg, #0f0f0f 0%, #2a2a2a 100%);
  --gradient-subtle: linear-gradient(135deg, #1a1a1a 0%, #3d3d3d 100%);
  --gradient-light: linear-gradient(135deg, #e8e8e8 0%, #f7f7f7 100%);
  --gradient-accent: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  --font-mono: "Fira Code", "Source Code Pro", "Roboto Mono", "Courier New", monospace;

  --size-xs: 0.75rem;
  --size-sm: 0.875rem;
  --size-base: 1rem;
  --size-lg: 1.125rem;
  --size-xl: 1.25rem;
  --size-2xl: 1.5rem;
  --size-3xl: 1.875rem;
  --size-4xl: 2.25rem;
  --size-5xl: 3rem;
  --size-6xl: 3.75rem;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;

  /* Animations */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 600ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Borders & Shadows */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);

  /* Glow Effects */
  --glow-sm: 0 0 12px rgba(255, 255, 255, 0.08);
  --glow-md: 0 0 20px rgba(255, 255, 255, 0.12);
  --glow-lg: 0 0 30px rgba(255, 255, 255, 0.15);
}

/* ============================================================================
   GLOBAL RESET & BASE STYLES
   ============================================================================ */

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

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-padding-top: 80px;
}

body {
  background-color: var(--color-black);
  color: var(--color-off-white);
  font-family: var(--font-sans);
  font-size: var(--size-base);
  line-height: 1.6;
  font-weight: var(--weight-regular);
  overflow-x: hidden;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--size-6xl);
  font-weight: var(--weight-bold);
}

h2 {
  font-size: var(--size-4xl);
  font-weight: var(--weight-bold);
}

h3 {
  font-size: var(--size-2xl);
  font-weight: var(--weight-semibold);
}

h4 {
  font-size: var(--size-xl);
  font-weight: var(--weight-semibold);
}

h5, h6 {
  font-size: var(--size-lg);
  font-weight: var(--weight-medium);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-grey-300);
  line-height: 1.7;
}

a {
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-grey-200);
}

strong {
  font-weight: var(--weight-semibold);
  color: var(--color-white);
}

/* ============================================================================
   RESPONSIVE IMAGES & MEDIA
   ============================================================================ */

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

figure {
  margin: 0;
  padding: 0;
}

picture {
  display: block;
}

/* ============================================================================
   LAYOUT & CONTAINERS
   ============================================================================ */

main {
  width: 100%;
  overflow: hidden;
}

section {
  padding: var(--spacing-5xl) var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

section:first-of-type {
  border-top: none;
}

.header-inner,
.hero-inner,
.about-inner,
.skills-inner,
.projects-inner,
.experience-inner,
.education-inner,
.contact-inner,
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* ============================================================================
   HEADER & NAVIGATION
   ============================================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(0, 0, 0, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-md) var(--spacing-lg);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-3xl);
  max-width: 1400px;
  margin: 0 auto;
}

/* Logo / Branding */
.site-branding {
  flex-shrink: 0;
}

.site-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.05em;
  transition: opacity var(--transition-base);
}

.site-logo:hover {
  opacity: 0.8;
}

.name-text {
  font-size: var(--size-lg);
  font-weight: var(--weight-bold);
  color: var(--color-white);
}

.name-role {
  font-size: var(--size-xs);
  color: var(--color-grey-400);
  font-weight: var(--weight-regular);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Navigation Menu */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-3xl);
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-grey-300);
  text-transform: capitalize;
  transition: color var(--transition-base);
  display: inline-block;
  padding-bottom: var(--spacing-xs);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-white), transparent);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-white);
}

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

/* CTA Button in Header */
.btn-header {
  flex-shrink: 0;
  padding: var(--spacing-sm) var(--spacing-xl);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  font-weight: var(--weight-medium);
  font-size: var(--size-sm);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.btn-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-base);
  z-index: -1;
}

.btn-header:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.btn-header:hover::before {
  left: 100%;
}

/* ============================================================================
   HAMBURGER MENU (MOBILE SCISSOR-STYLE)
   Scissor-themed hamburger menu for mobile navigation
   ============================================================================ */

.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  position: relative;
  flex-shrink: 0;
}

/* Scissor-style lines */
.hamburger-line {
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 1px;
  transition: all 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: center;
}

/* ============================================================================
   GITHUB REPOS SECTION
   Responsive grid and card styles for dynamically loaded GitHub repos
   ============================================================================ */
.github-repos-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.repos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.repo-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.04);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.repo-thumb {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: calc(var(--border-radius-md) - 2px);
  display: block;
  margin-bottom: 0.5rem;
  background: rgba(255,255,255,0.02);
}

.repo-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.repo-card h3 {
  font-size: var(--size-lg);
  margin-bottom: 0.25rem;
  color: var(--color-white);
}

.repo-meta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
  color: var(--color-grey-300);
  font-size: var(--size-sm);
}

.repo-links {
  margin-top: auto;
  display: flex;
  gap: var(--spacing-md);
}

.repo-link {
  font-size: var(--size-sm);
  color: var(--color-grey-200);
  padding: 0.35rem 0.6rem;
  border-radius: var(--border-radius-sm);
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.03);
}

.repo-link:hover {
  color: var(--color-white);
}

.repo-loading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-grey-300);
}

.spinner {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.08);
  border-top-color: var(--color-white);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.repo-error {
  color: #ffb4b4;
  margin-top: var(--spacing-sm);
}

/* Responsive grid: 2 columns on tablet, 4 on large screens */
@media (min-width: 600px) {
  .repos-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
  .repos-grid { grid-template-columns: repeat(4, 1fr); }
}

.hamburger-line.line-top {
  transform: rotate(-45deg);
}

.hamburger-line.line-bottom {
  transform: rotate(45deg);
}

/* Active/open state: lines animate like opening scissors */
.hamburger-menu.active .hamburger-line.line-top {
  transform: rotate(45deg) translateX(6px) translateY(0px);
}

.hamburger-menu.active .hamburger-line.line-bottom {
  transform: rotate(-45deg) translateX(-6px) translateY(0px);
}

/* Mobile Navigation */
.main-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 100;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-3xl);
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-grey-300);
  text-transform: capitalize;
  transition: color var(--transition-base);
  display: inline-block;
  padding-bottom: var(--spacing-xs);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-white), transparent);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-white);
}

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

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero {
  padding: var(--spacing-5xl) var(--spacing-lg);
  margin-top: 80px;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: float 20s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: float 25s ease-in-out infinite reverse;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  grid-auto-flow: dense;
  align-items: center;
  max-width: 1400px;
  width: 100%;
}

.hero-content {
  animation: slideUp 800ms ease-out;
  z-index: 3;
}

.hero-title {
  font-size: clamp(2rem, 10vw, 5rem);
  font-weight: var(--weight-bold);
  background: linear-gradient(
    90deg,
    #ffffff 0%,
    #ffffff 20%,
    #0f0f0f 40%,
    #0f0f0f 60%,
    #ffffff 80%,
    #ffffff 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
  line-height: 1.2;
  will-change: background-position;
  animation: gradientTextShift 6s ease-in-out infinite;
}

/* Fallback for browsers that don't support gradient text */
@supports not (-webkit-background-clip: text) {
  .hero-title {
    color: var(--color-white);
    background: none;
    animation: none;
  }
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .hero-title {
    animation: none;
    background: linear-gradient(
      90deg,
      #f7f7f7 0%,
      #0f0f0f 50%,
      #f7f7f7 100%
    );
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    will-change: unset;
  }
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--color-grey-400);
  margin-bottom: var(--spacing-lg);
  font-weight: var(--weight-light);
  letter-spacing: 0.05em;
}

.hero-tagline {
  font-size: var(--size-lg);
  color: var(--color-grey-300);
  max-width: 500px;
  margin: var(--spacing-xl) 0 var(--spacing-2xl) 0;
  line-height: 1.8;
  animation: fadeIn 1000ms ease-out 200ms backwards;
}

/* Hero Tech Stack Icons */
.hero-tech-stack {
  display: flex;
  gap: var(--spacing-lg);
  max-width: 500px;
  margin-bottom: var(--spacing-3xl);
  flex-wrap: wrap;
  animation: fadeIn 1000ms ease-out 300ms backwards;
}

.hero-tech-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: default;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hero-tech-icon:hover {
  transform: translateY(-4px);
}

.hero-tech-icon i,
.hero-tech-svg {
  font-size: 2rem;
  color: var(--color-grey-200);
  transition: color var(--transition-base);
}

.hero-tech-icon:hover i,
.hero-tech-icon:hover .hero-tech-svg {
  color: var(--color-white);
}

.hero-tech-svg {
  width: 32px;
  height: 32px;
}

.hero-tech-label {
  font-size: var(--size-xs);
  font-weight: var(--weight-medium);
  color: var(--color-grey-300);
  letter-spacing: 0.02em;
  text-transform: capitalize;
  white-space: nowrap;
}

.hero-tech-icon:hover .hero-tech-label {
  color: var(--color-grey-100);
}

/* Hero CTAs */
.hero-ctas {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-start;
  flex-wrap: wrap;
  animation: fadeIn 1000ms ease-out 400ms backwards;
}

/* Hero Visual / Image */
.hero-visual {
  position: relative;
  margin: 0;
  animation: fadeIn 1200ms ease-out 300ms backwards;
  grid-column: 2;
  grid-row: 1;
  height: 100%;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 480px;
  aspect-ratio: 3 / 3;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  display: block;

  /* Slight desaturation to keep image muted but in color */
  filter: saturate(0.85) contrast(1.05) brightness(0.95);

  /* Smooth transitions for animations */
  transition: transform 600ms cubic-bezier(0.34, 1.56, 0.64, 1),
              filter 400ms ease-out;

  /* Parallax effect on scroll (will be enhanced with animation) */
  transform: translateY(0);
}

/* Hero image hover effect (subtle lift) */
.hero:hover .hero-image {
  transform: translateY(-8px);
  filter: saturate(0.95) contrast(1.08) brightness(1);
}

/* Gradient Overlay — Dark to Transparent */
.hero-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.18) 0%, rgba(0, 0, 0, 0.08) 45%, transparent 100%);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.18);
  pointer-events: none;
  z-index: 2;
}

/* Grain Texture Overlay */
.hero-image-grain {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' seed='2' /%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  opacity: 0.06;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 3;
  animation: grain-drift 12s linear infinite;
}

/* Vignette Effect — Dark edges */
.hero-image-vignette {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.22) 100%);
  pointer-events: none;
  z-index: 4;
}

/* Edge fade to make the image feel integrated and intentional */
.hero-image-wrapper::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.02) 10%, rgba(0,0,0,0.04) 30%, rgba(0,0,0,0.06) 60%, rgba(0,0,0,0.08) 100%);
  mix-blend-mode: multiply;
  z-index: 5;
}

/* Reveal-on-scroll helper: sections start slightly offset and hidden */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  will-change: transform, opacity;
}

.reveal.in-view {
  animation: revealIn 680ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

/* ============================================================================
   HERO RESPONSIVE ADJUSTMENTS
   ============================================================================ */

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }

  .hero-visual {
    grid-column: 1;
    grid-row: 2;
    min-height: 350px;
    max-width: 100%;
  }

  .hero-image-wrapper {
    max-width: 380px;
    aspect-ratio: 3 / 3;
    margin: 0 auto;
  }
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-2xl);
  border: none;
  border-radius: var(--border-radius-md);
  font-family: var(--font-sans);
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 500ms, height 500ms;
  z-index: 0;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  box-shadow: var(--glow-sm);
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: var(--glow-md);
  transform: translateY(-3px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--color-grey-300);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-submit {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.08) 100%);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-2xl);
  font-weight: var(--weight-semibold);
  width: 100%;
}

.btn-submit:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.15) 100%);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: var(--glow-md);
}

.btn-submit:focus {
  outline: none;
  box-shadow: var(--glow-lg);
}

/* ============================================================================
   FORM INPUTS & CONTROLS
   Responsive form styling with proper touch targets
   ============================================================================ */

input[type="text"],
input[type="email"],
textarea,
select {
  font-family: var(--font-sans);
  font-size: 16px;
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-white);
  line-height: 1.5;
  transition: all var(--transition-base);
  min-height: 44px;
  touch-action: manipulation;
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
  color: var(--color-grey-500);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus,
select:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

input[type="text"]:disabled,
input[type="email"]:disabled,
textarea:disabled,
select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.02);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

label {
  display: block;
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

/* ============================================================================
   SECTIONS: About, Skills, Projects, Experience, Education, Contact
   ============================================================================ */

.section-title {
  font-size: var(--size-4xl);
  font-weight: var(--weight-bold);
  margin-bottom: var(--spacing-2xl);
  text-transform: capitalize;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -12px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-white), transparent);
}

/* ABOUT SECTION */
.about {
  background: var(--color-black);
  animation: slideUp 800ms ease-out;
}

.about-summary {
  font-size: var(--size-lg);
  color: var(--color-grey-200);
  max-width: 800px;
  line-height: 1.8;
  margin-bottom: var(--spacing-2xl);
}

/* Tech Stack Icons Section */
.tech-stack-section {
  margin-bottom: var(--spacing-3xl);
  animation: slideUp 800ms ease-out 200ms backwards;
}

.tech-stack-title {
  font-size: var(--size-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--size-sm);
}

.tech-stack-icons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  max-width: 100%;
}

.tech-icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  cursor: default;
  white-space: nowrap;
}

.tech-icon-box:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.05) 100%);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.tech-icon-label {
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-grey-100);
  letter-spacing: 0.02em;
}

.about-meta {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.meta-item {
  color: var(--color-grey-300);
  font-size: var(--size-sm);
}

.meta-item a {
  color: var(--color-white);
  font-weight: var(--weight-medium);
  transition: color var(--transition-base);
}

.meta-item a:hover {
  color: var(--color-grey-200);
  text-decoration: underline;
}

/* SKILLS SECTION */
.skills {
  background: var(--color-black);
  animation: slideUp 800ms ease-out 100ms backwards;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
}

.skills-group {
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.skills-group:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--glow-sm);
  transform: translateY(-4px);
}

.skills-group-title {
  font-size: var(--size-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

.skills-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.skill {
  color: var(--color-grey-300);
  font-size: var(--size-sm);
  padding-left: var(--spacing-md);
  position: relative;
  transition: all var(--transition-base);
}

.skill::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-grey-500);
  opacity: 0;
  transform: translateX(4px);
  transition: all var(--transition-base);
}

.skill:hover {
  color: var(--color-white);
  padding-left: var(--spacing-xl);
}

.skill:hover::before {
  opacity: 1;
  transform: translateX(0);
}

/* PROJECTS SECTION */
.projects {
  background: var(--color-black);
  animation: slideUp 800ms ease-out 200ms backwards;
}

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

.project-card {
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.project-card:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.04) 100%);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--glow-md);
  transform: translateY(-8px);
}

.project-card-header {
  margin-bottom: var(--spacing-lg);
}

.project-title {
  font-size: var(--size-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  margin: 0;
}

.project-description {
  flex: 1;
  color: var(--color-grey-300);
  font-size: var(--size-sm);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.project-tech {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.project-tech li {
  font-size: var(--size-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--border-radius-sm);
  color: var(--color-grey-300);
  font-weight: var(--weight-medium);
  transition: all var(--transition-base);
}

.project-card:hover .project-tech li {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.project-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: auto;
}

.project-link {
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-grey-300);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition-base);
  flex: 1;
  text-align: center;
}

.project-link:hover {
  color: var(--color-white);
  border-bottom-color: var(--color-white);
}

/* EXPERIENCE SECTION */
.experience {
  background: var(--color-black);
  animation: slideUp 800ms ease-out 300ms backwards;
}

.experience-item {
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-xl);
  transition: all var(--transition-base);
}

.experience-item:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--glow-sm);
  transform: translateX(6px);
}

.experience-role {
  font-size: var(--size-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  margin: 0 0 var(--spacing-sm) 0;
}

.experience-meta {
  font-size: var(--size-sm);
  color: var(--color-grey-400);
  margin-bottom: var(--spacing-lg);
  font-style: italic;
}

.experience-details p {
  margin-bottom: var(--spacing-md);
  color: var(--color-grey-300);
}

.experience-responsibilities {
  list-style: none;
  margin-top: var(--spacing-lg);
}

.experience-responsibilities li {
  position: relative;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-grey-300);
  font-size: var(--size-sm);
}

.experience-responsibilities li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-grey-500);
  font-weight: var(--weight-bold);
}

/* EDUCATION SECTION */
.education {
  background: var(--color-black);
  animation: slideUp 800ms ease-out 400ms backwards;
}

.education-item {
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.education-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
}

.education-degree {
  font-size: var(--size-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  margin: 0 0 var(--spacing-md) 0;
}

.education-institution,
.education-notes {
  color: var(--color-grey-300);
  font-size: var(--size-sm);
  margin-bottom: var(--spacing-md);
}

.education-notes {
  color: var(--color-grey-400);
  font-style: italic;
}

/* CONTACT SECTION */
.contact {
  background: var(--color-black);
  animation: slideUp 800ms ease-out 500ms backwards;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-item {
  color: var(--color-grey-300);
  font-size: var(--size-sm);
}

.contact-item a {
  color: var(--color-white);
  font-weight: var(--weight-medium);
  transition: color var(--transition-base);
}

.contact-item a:hover {
  color: var(--color-grey-200);
}

.contact-form {
  max-width: 600px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  padding: var(--spacing-2xl);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.contact-form:focus-within {
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--glow-sm);
}

.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-xl);
}

.form-row label {
  display: block;
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  text-transform: capitalize;
}

.form-row input,
.form-row textarea {
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: var(--size-sm);
  transition: all var(--transition-base);
  outline: none;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--color-grey-500);
}

.form-row input:focus,
.form-row textarea:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

.form-actions {
  margin-top: var(--spacing-lg);
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.site-footer {
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--gradient-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  animation: slideUp 800ms ease-out 600ms backwards;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-copy,
.footer-credit {
  color: var(--color-grey-400);
  font-size: var(--size-sm);
  margin: 0;
}

.footer-credit {
  margin-top: var(--spacing-md);
  font-weight: var(--weight-medium);
  color: var(--color-grey-300);
}

/* ============================================================================
   ANIMATIONS & KEYFRAMES
   ============================================================================ */

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-20px, -20px);
  }
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
  :root {
    --size-6xl: 2.5rem;
    --size-5xl: 2rem;
    --size-4xl: 1.75rem;
    --spacing-5xl: 3rem;
    --spacing-4xl: 2.5rem;
  }

  .header-inner {
    gap: var(--spacing-lg);
    flex-wrap: wrap;
  }

  /* Show hamburger menu on mobile */
  .hamburger-menu {
    display: flex;
    order: 2;
  }

  /* Hide and reposition nav on mobile */
  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    max-height: 0;
    overflow: hidden;
    transition: max-height 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) var(--spacing-lg);
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  /* Show nav when hamburger is active */
  .hamburger-menu.active ~ .main-nav,
  .main-nav.active {
    max-height: 400px;
  }

  .nav-list {
    gap: var(--spacing-xl);
    flex-direction: column;
    width: 100%;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    font-size: var(--size-xs);
    display: block;
    width: 100%;
    padding: var(--spacing-md) 0;
  }

  .btn-header {
    order: -1;
    flex-shrink: 0;
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
  }

  section {
    padding: var(--spacing-3xl) var(--spacing-lg);
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-3xl) var(--spacing-lg);
    margin-top: 120px;
  }

  .hero-title {
    font-size: clamp(1.5rem, 8vw, 2.5rem);
  }

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

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

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

  .project-links {
    gap: var(--spacing-sm);
  }

  .project-link {
    font-size: var(--size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* ============================================================================
   TABLET LANDSCAPE (600px - 1024px)
   ============================================================================ */

@media (min-width: 600px) and (max-width: 1024px) {
  html {
    scroll-padding-top: 70px;
  }

  .header-inner {
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .site-logo {
    gap: var(--spacing-xs);
  }

  .name-text {
    font-size: var(--size-base);
  }

  .name-role {
    font-size: var(--size-xs);
  }

  .contact-content {
    grid-template-columns: 1fr 1.1fr;
    gap: var(--spacing-3xl);
  }

  .resume-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .skills-grid,
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }

  .tech-stack-icons {
    gap: var(--spacing-md);
  }

  .tech-icon-box {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--size-sm);
  }

  .hero-tech-stack {
    gap: var(--spacing-lg);
    max-width: 100%;
  }

  .hero-tech-icon i,
  .hero-tech-svg {
    font-size: 1.75rem;
  }

  section {
    padding: var(--spacing-4xl) var(--spacing-lg);
  }
}

/* ============================================================================
   SMALL MOBILE (480px - 600px)
   ============================================================================ */

@media (max-width: 599px) {
  html {
    scroll-padding-top: 70px;
  }

  :root {
    --size-6xl: 2rem;
    --size-5xl: 1.5rem;
    --size-4xl: 1.375rem;
    --size-3xl: 1.125rem;
    --size-2xl: 1rem;
    --spacing-5xl: 2rem;
    --spacing-4xl: 1.5rem;
    --spacing-3xl: 1.25rem;
    --spacing-2xl: 1rem;
  }

  /* Compact header for small screens */
  .site-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header-inner {
    padding: 0;
    gap: var(--spacing-md);
  }

  .site-branding {
    flex: 1;
    min-width: 0;
  }

  .site-logo {
    gap: 0;
  }

  .name-text {
    font-size: var(--size-sm);
    font-weight: var(--weight-semibold);
  }

  .name-role {
    font-size: var(--size-xs);
    display: none;
  }

  /* Ensure hamburger is accessible on small screens */
  .hamburger-menu {
    width: 40px;
    height: 40px;
  }

  /* Mobile navigation from full screen width */
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) var(--spacing-md);
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    z-index: 999;
  }

  .main-nav.active {
    max-height: 500px;
  }

  .nav-list {
    flex-direction: column;
    gap: var(--spacing-lg);
    width: 100%;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md) 0;
    font-size: var(--size-sm);
    touch-action: manipulation;
  }

  /* Hide header CTA on very small screens, show in menu */
  .btn-header {
    display: none;
  }

  /* Section spacing */
  section {
    padding: var(--spacing-3xl) var(--spacing-md);
  }

  section:first-of-type {
    border-top: none;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-3xl) var(--spacing-md);
    margin-top: 70px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .hero-title {
    font-size: clamp(1.375rem, 7vw, 2rem);
    margin-bottom: var(--spacing-md);
  }

  .hero-subtitle {
    font-size: clamp(0.875rem, 3vw, 1.125rem);
    margin-bottom: var(--spacing-md);
  }

  .hero-tagline {
    font-size: var(--size-sm);
    max-width: 100%;
    margin: var(--spacing-lg) 0 var(--spacing-2xl) 0;
  }

  .hero-tech-stack {
    gap: var(--spacing-md);
    max-width: 100%;
    margin-bottom: var(--spacing-2xl);
  }

  .hero-tech-icon i,
  .hero-tech-svg {
    font-size: 1.5rem;
  }

  .hero-tech-svg {
    width: 24px;
    height: 24px;
  }

  .hero-ctas {
    gap: var(--spacing-sm);
  }

  .hero-visual {
    grid-column: 1;
    min-height: 300px;
  }

  .hero-image-wrapper {
    max-width: 100%;
    aspect-ratio: 3 / 4;
  }

  /* Content buttons full width */
  .btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--size-sm);
    touch-action: manipulation;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  /* Typography improvements */
  h2 {
    font-size: var(--size-4xl);
  }

  h3 {
    font-size: var(--size-2xl);
  }

  p {
    font-size: var(--size-sm);
    line-height: 1.6;
  }

  /* Grid adjustments */
  .about-meta {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .tech-stack-icons {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .tech-icon-box {
    flex: 0 1 calc(50% - var(--spacing-sm));
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--size-xs);
  }

  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .project-card {
    padding: var(--spacing-lg);
  }

  .skills-group {
    padding: var(--spacing-lg);
  }

  /* Form improvements for mobile */
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .contact-form {
    padding: var(--spacing-md);
  }

  .form-group {
    margin-bottom: var(--spacing-lg);
  }

  input,
  textarea,
  select {
    font-size: 16px;
    min-height: 44px;
    padding: var(--spacing-md);
  }

  textarea {
    min-height: 120px;
  }

  /* Contact quick links */
  .contact-quick {
    order: -1;
  }

  .quick-link {
    padding: var(--spacing-md) var(--spacing-sm);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .quick-link-label {
    font-size: var(--size-sm);
  }

  /* Images and media */
  img {
    max-width: 100%;
    height: auto;
  }

  /* Lists and spacing */
  ul,
  ol {
    margin-left: var(--spacing-lg);
  }

  li {
    margin-bottom: var(--spacing-sm);
    font-size: var(--size-sm);
  }

  /* Experience and education */
  .experience-item,
  .education-item {
    padding: var(--spacing-lg);
  }

  .experience-role,
  .education-degree {
    font-size: var(--size-lg);
  }

  .experience-meta,
  .education-institution {
    font-size: var(--size-xs);
    margin-bottom: var(--spacing-sm);
  }

  /* Reduce gaps everywhere */
  .about-summary {
    font-size: var(--size-sm);
    line-height: 1.7;
  }

  .meta-item {
    font-size: var(--size-xs);
  }

  /* Footer */
  .footer-inner {
    text-align: center;
  }

  .footer-copy,
  .footer-credit {
    font-size: var(--size-xs);
    margin-bottom: var(--spacing-sm);
  }
}

/* ============================================================================
   EXTRA SMALL PHONES (< 480px)
   ============================================================================ */

@media (max-width: 479px) {
  html {
    scroll-padding-top: 60px;
  }

  :root {
    --size-6xl: 1.75rem;
    --size-5xl: 1.375rem;
    --size-4xl: 1.25rem;
    --size-3xl: 1rem;
    --spacing-5xl: 1.5rem;
    --spacing-4xl: 1.25rem;
    --spacing-3xl: 1rem;
  }

  .site-header {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .header-inner {
    gap: var(--spacing-sm);
  }

  .site-logo {
    flex: 1;
    min-width: 0;
  }

  .name-text {
    font-size: var(--size-xs);
  }

  .hamburger-menu {
    width: 36px;
    height: 36px;
  }

  .hamburger-line {
    width: 18px;
  }

  section {
    padding: var(--spacing-2xl) var(--spacing-sm);
  }

  .hero {
    margin-top: 60px;
    padding: var(--spacing-2xl) var(--spacing-sm);
  }

  .hero-title {
    font-size: clamp(1.25rem, 6vw, 1.75rem);
  }

  .hero-subtitle {
    font-size: var(--size-xs);
  }

  .hero-tagline {
    font-size: var(--size-xs);
  }

  .hero-ctas {
    gap: var(--spacing-xs);
  }

  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--size-xs);
  }

  h2 {
    font-size: var(--size-3xl);
  }

  h3 {
    font-size: var(--size-xl);
  }

  input,
  textarea {
    font-size: 16px;
    padding: var(--spacing-sm);
    min-height: 44px;
  }

  .contact-form {
    padding: var(--spacing-sm);
  }

  .form-group {
    margin-bottom: var(--spacing-md);
  }

  .section-title {
    font-size: var(--size-3xl);
  }

  .section-title::after {
    height: 2px;
  }

  ul,
  ol {
    margin-left: var(--spacing-md);
  }

  li {
    font-size: var(--size-xs);
    margin-bottom: var(--spacing-xs);
  }

  /* Compact all padding on small areas */
  .skills-group,
  .project-card,
  .experience-item {
    padding: var(--spacing-md);
  }

  .about-summary {
    font-size: var(--size-xs);
  }

  p {
    font-size: var(--size-xs);
  }
}

/* ============================================================================
   LANDSCAPE ORIENTATION (Mobile)
   ============================================================================ */

@media (max-height: 500px) and (orientation: landscape) {
  .site-header {
    padding: var(--spacing-xs);
  }

  .hero {
    min-height: auto;
    margin-top: 60px;
    padding: var(--spacing-lg);
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-ctas {
    gap: var(--spacing-sm);
  }

  section {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  /* Disable some animations on low-memory devices */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      animation: none;
    }

    .project-card {
      animation: none;
    }
  }
}

/* ============================================================================
   REDUCED MOTION & ACCESSIBILITY
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    animation: none !important;
    opacity: 1;
    transform: translateY(0) !important;
  }

  .reveal.in-view {
    animation: none !important;
  }
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
  .site-header {
    position: static;
    background: var(--color-white);
    color: var(--color-black);
  }

  section {
    page-break-inside: avoid;
  }

  .site-header,
  .hamburger-menu {
    display: none;
  }
}