/* ============================================
   SAMEER MURTAZA — PORTFOLIO
   Design System & Styles
   ============================================ */

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

/* ---------- Design Tokens ---------- */
:root {
  /* Colors */
  --color-bg: #f8fafb;
  --color-bg-alt: #eff3f6;
  --color-bg-card: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-primary: #0d9488;
  --color-primary-light: #14b8a6;
  --color-primary-dark: #0a7a70;
  --color-primary-bg: rgba(13, 148, 136, 0.08);
  --color-accent: #3b82f6;
  --color-accent-bg: rgba(59, 130, 246, 0.08);
  --color-border: #e2e8f0;
  --color-shadow: rgba(15, 23, 42, 0.06);
  --color-shadow-lg: rgba(15, 23, 42, 0.1);
  --color-white: #ffffff;
  --color-overlay: rgba(248, 250, 251, 0.85);

  /* Typography */
  --font-heading: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;

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

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 50%;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px var(--color-shadow);
  --shadow-md: 0 4px 12px var(--color-shadow);
  --shadow-lg: 0 8px 30px var(--color-shadow-lg);
  --shadow-xl: 0 20px 50px var(--color-shadow-lg);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
}

.section-header p {
  max-width: 600px;
  margin: var(--space-lg) auto 0;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  background: var(--color-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: var(--space-sm);
  right: var(--space-sm);
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.nav-cta {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  padding: var(--space-sm) var(--space-lg) !important;
  border-radius: var(--radius-md) !important;
  font-weight: 600 !important;
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base) !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(13, 148, 136, 0.35);
  color: var(--color-white) !important;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
  z-index: 1001;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
  background-color: var(--color-bg);
}

.hero-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: center center;
  z-index: 0;
  pointer-events: none;
}

.hero-split {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xl);
  position: relative;
  z-index: 10;
  width: 100%;
}

.hero-content {
  flex: 1.2;
  max-width: 650px;
  padding: var(--space-3xl) 0;
}

.hero-3d-wrapper {
  flex: 1;
  height: 600px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.sketchfab-embed-wrapper iframe {
  width: 100% !important;
  height: 100% !important;
  outline: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  background-color: var(--color-bg-alt);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-xl);
  border: 1px solid rgba(13, 148, 136, 0.15);
}

.hero-badge .pulse {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(1.5);
  }
}

.hero h1 {
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(13, 148, 136, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 25px rgba(13, 148, 136, 0.4);
  color: var(--color-white);
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.stat {
  text-align: left;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- About Section ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-photo-wrapper {
  position: relative;
}

.about-photo {
  width: 300px;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
}

.about-photo-wrapper::before {
  content: "";
  position: absolute;
  top: -12px;
  left: -12px;
  right: 12px;
  bottom: 12px;
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-xl);
  opacity: 0.3;
  z-index: 0;
}

.about-text h3 {
  margin-bottom: var(--space-md);
  color: var(--color-primary);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.about-text h2 {
  margin-bottom: var(--space-lg);
}

.about-text p {
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.92rem;
  transition:
    transform var(--transition-smooth),
    box-shadow var(--transition-base);
}

.highlight-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.highlight-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ---------- Skills Section ---------- */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.skill-category {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition:
    transform var(--transition-smooth),
    box-shadow var(--transition-base);
}

.skill-category:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.skill-category-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.3rem;
}

.skill-category-icon.core {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.skill-category-icon.vr {
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

.skill-category-icon.tools {
  background: rgba(139, 92, 246, 0.08);
  color: #8b5cf6;
}

.skill-category-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  padding: var(--space-sm) var(--space-md);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: default;
}

.skill-tag:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-color: rgba(13, 148, 136, 0.2);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition:
    transform var(--transition-smooth),
    box-shadow var(--transition-base);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.project-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.project-image-placeholder.pharma {
  background: linear-gradient(135deg, #0d9488, #06b6d4);
}

.project-image-placeholder.auto {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
}

.project-image-placeholder.medical {
  background: linear-gradient(135deg, #10b981, #34d399);
}

.project-image-placeholder.manufacturing {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.project-image-placeholder.retail {
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
}

.project-industry-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  padding: var(--space-xs) var(--space-md);
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-body {
  padding: var(--space-xl);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.project-client {
  font-size: 0.88rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.project-description {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  color: var(--color-text-muted);
}

.project-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.project-tech-tag {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 50px;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-base);
}

.project-link:hover {
  gap: var(--space-md);
}

.project-link .arrow {
  transition: transform var(--transition-base);
}

.project-link:hover .arrow {
  transform: translateX(4px);
}

/* ---------- Contact Section ---------- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-info h2 {
  margin-bottom: var(--space-lg);
}

.contact-info > p {
  margin-bottom: var(--space-2xl);
  max-width: 420px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-link-item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition:
    transform var(--transition-smooth),
    box-shadow var(--transition-base),
    border-color var(--transition-fast);
  text-decoration: none;
  color: var(--color-text);
}

.contact-link-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-link-label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-link-value {
  font-weight: 600;
  font-size: 1rem;
  margin-top: 2px;
}

.contact-form-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-lg);
}

.contact-form-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.contact-form-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  font-size: 0.95rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.form-input {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
  background: var(--color-bg-alt);
}

.form-input::placeholder {
  color: rgba(148, 163, 184, 0.5);
}

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

.submit-btn {
  margin-top: var(--space-md);
  padding: 1rem;
  font-size: 1rem;
  font-weight: 600;
  width: 100%;
  justify-content: center;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

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

.footer-text {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.footer-socials {
  display: flex;
  gap: var(--space-md);
}

.footer-social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ---------- Scroll Reveal Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-photo-wrapper {
    margin: 0 auto;
  }

  .about-photo-wrapper::before {
    top: -10px;
    left: -10px;
    right: 10px;
    bottom: 10px;
  }

  .hero-content {
    max-width: 520px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-card);
    flex-direction: column;
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-xl)
      var(--space-xl);
    gap: var(--space-sm);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-smooth);
    border-left: 1px solid var(--color-border);
    z-index: 999;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1rem;
    padding: var(--space-md);
    width: 100%;
    border-radius: var(--radius-md);
  }

  .nav-links a:hover {
    background: var(--color-bg-alt);
  }

  .nav-toggle {
    display: flex;
  }

  .hero-split {
    flex-direction: column-reverse;
    text-align: center;
    gap: 0;
  }

  .hero-3d-wrapper {
    height: 400px;
    width: 100%;
  }

  .hero-content {
    text-align: center;
    max-width: 100%;
    padding-top: 0;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-stats {
    justify-content: center;
    gap: var(--space-xl);
  }

  .stat {
    text-align: center;
  }

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

  .about-photo {
    width: 220px;
    height: 260px;
  }

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

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

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

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

  .timeline::before {
    left: 18px;
  }

  .timeline-item {
    padding-left: 52px;
  }

  .timeline-dot {
    left: 11px;
    width: 16px;
    height: 16px;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .section {
    padding: var(--space-3xl) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  h1 {
    font-size: 2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
  }

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

  .contact-form-card {
    padding: var(--space-xl);
  }
}

/* ---------- Mobile Menu Overlay ---------- */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  z-index: 998;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav-overlay.active {
  display: block;
  opacity: 1;
}

/* ---------- Loading Animation ---------- */
@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }

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

@keyframes rotate-slow {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes gradient-shift {
  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}