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

:root {
  /* Dark Mode (High-end Cyberpunk) - Default */
  --color-bg-primary: #131a2b;
  --color-bg-secondary: rgba(30, 41, 59, 0.8);
  --color-bg-tertiary: rgba(30, 41, 59, 0.5);
  --color-bg-overlay: rgba(15, 23, 42, 0.9);
  --color-bg-header: rgba(19, 26, 43, 0.7);

  /* Color System - Text */
  --color-text-primary: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-text-description: #94a3b8;

  /* Color System - Neon Colors */
  --color-primary: #00f5ff; /* Neon Cyan */
  --color-primary-light: #60fdff;
  --color-primary-dark: rgba(0, 245, 255, 0.8);
  --color-primary-bg-lighter: rgba(0, 245, 255, 0.1);
  --color-primary-bg-light: rgba(0, 245, 255, 0.05);
  --color-primary-bg-lighter2: rgba(0, 245, 255, 0.02);
  --color-primary-border: rgba(0, 245, 255, 0.3);
  --color-primary-border-light: rgba(0, 245, 255, 0.15);
  --color-primary-shadow: 0 0 15px rgba(0, 245, 255, 0.4);

  /* Color System - Accent (Neon Pink/Purple) */
  --color-accent: #ff00ff; /* Neon Pink */
  --color-accent-light: #ff70ff;
  --color-accent-bg-lighter: rgba(255, 0, 255, 0.1);
  --color-accent-border: rgba(255, 0, 255, 0.3);
  --color-accent-bg-lightest: rgba(255, 0, 255, 0.05);
  --color-accent-shadow: 0 0 15px rgba(255, 0, 255, 0.4);

  /* Color System - Borders */
  --color-border: rgba(0, 245, 255, 0.2);

  /* Spacing Scale */
  --spacing-xs: 0.4rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-base: 0.9rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.5rem;
  --spacing-2xl: 2rem;
  --spacing-3xl: 3rem;

  /* Border Radius */
  --card-radius: 12px;
  --radius-sm: 0.5rem;
  --radius-md: 0.65rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-pill: 1.5rem;
  --radius-pill-lg: 2rem;
  --radius-full: 50%;

  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8rem;
  --font-size-md: 0.85rem;
  --font-size-base: 0.9rem;
  --font-size-lg: 1rem;
  --font-size-xl: 1.1rem;
  --font-size-2xl: 1.25rem;
  --font-size-3xl: 1.5rem;
  --font-size-4xl: 1.75rem;
  --font-size-5xl: 2rem;

  --line-height-tight: 1.3;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.7;
  --line-height-loose: 1.8;

  /* Transitions & Effects */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* Background Grid Texture */
  --grid-pattern: radial-gradient(circle, rgba(0, 245, 255, 0.05) 1px, transparent 1px);
  --grid-size: 30px;

  /* Legacy Aliases for Compatibility */
  --primary-bg: var(--color-bg-primary);
  --feishu-blue: var(--color-primary);
  --vitality-gold: var(--color-accent);
  --card-border: var(--color-border);
  --card-bg: var(--color-bg-secondary);
  --text-primary: var(--color-text-primary);
  --text-secondary: var(--color-text-secondary);
  --text-tertiary: var(--color-text-tertiary);
}

/* Dark Mode Background & Patterns */
html:not([data-theme="light"]) body {
  background: linear-gradient(135deg, #131a2b 0%, #1a243d 100%), 
              var(--grid-pattern) 0 0 / var(--grid-size) var(--grid-size);
  background-attachment: fixed;
}

html:not([data-theme="light"]) header {
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-primary-border);
}

html:not([data-theme="light"]) .nav-link.active::after {
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  box-shadow: 0 0 10px var(--color-primary);
}

html:not([data-theme="light"]) .card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-primary-border-light);
}

html:not([data-theme="light"]) .card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.15);
  background: rgba(30, 41, 59, 0.9);
}

html:not([data-theme="light"]) .section-title {
  color: var(--color-primary);
  text-shadow: 0 0 10px rgba(0, 245, 255, 0.3);
}

html:not([data-theme="light"]) a:not(.footer-button):not(.nav-link) {
  color: var(--color-accent);
  transition: all var(--transition-fast);
}

html:not([data-theme="light"]) a:not(.footer-button):not(.nav-link):hover {
  text-shadow: 0 0 8px var(--color-accent);
}

html:not([data-theme="light"]) .footer-button {
  background: var(--color-primary);
  box-shadow: 0 0 15px rgba(0, 245, 255, 0.2);
}

html:not([data-theme="light"]) .footer-button:hover {
  box-shadow: 0 0 25px rgba(0, 245, 255, 0.4);
}

html:not([data-theme="light"]) .badge {
  background: rgba(0, 245, 255, 0.1);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}

html:not([data-theme="light"]) .metric-value {
  color: var(--color-primary);
  text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

html:not([data-theme="light"]) .work-badge {
  background: rgba(255, 0, 255, 0.1);
  border-color: var(--color-accent-border);
  color: var(--color-accent-light);
}

html:not([data-theme="light"]) .exp-period {
  color: var(--color-accent);
}

/* Light Mode (Pop Art Aesthetic - Muted Tones) */
[data-theme="light"] {
  /* Background Colors - Warm Muted Pop Art */
  --color-bg-primary: #D9D2C5;
  --color-bg-secondary: #E5E0D5;
  --color-bg-tertiary: rgba(196, 136, 15, 0.08);
  --color-bg-overlay: rgba(196, 136, 15, 0.12);
  --color-bg-header: rgba(229, 224, 213, 0.98);

  /* Text Colors - Warm Gray */
  --color-text-primary: #3A3A3A;
  --color-text-secondary: #6A6A6A;
  --color-text-tertiary: #8A8A8A;
  --color-text-description: #5A5A5A;

  /* Primary Color - Muted Warm Brown */
  --color-primary: #C4880F;
  --color-primary-light: #D9A126;
  --color-primary-dark: rgba(196, 136, 15, 0.85);
  --color-primary-bg-lighter: rgba(196, 136, 15, 0.18);
  --color-primary-bg-light: rgba(196, 136, 15, 0.12);
  --color-primary-bg-lighter2: rgba(196, 136, 15, 0.08);
  --color-primary-border: rgba(196, 136, 15, 0.35);
  --color-primary-border-light: rgba(196, 136, 15, 0.25);
  --color-primary-shadow: rgba(196, 136, 15, 0.18);

  /* Accent Color - Muted Warm Red */
  --color-accent: #B85555;
  --color-accent-light: #D07070;
  --color-accent-bg-lighter: rgba(184, 85, 85, 0.18);
  --color-accent-border: rgba(184, 85, 85, 0.35);
  --color-accent-bg-lightest: rgba(184, 85, 85, 0.08);

  /* Border & Shadows */
  --color-border: rgba(58, 58, 58, 0.10);
  --shadow-primary: 0 4px 24px rgba(58, 58, 58, 0.10);

  /* Border Radius - Pop Art Rounded */
  --card-radius: 20px;

  /* Glass Effect */
  --bg-card-glass: rgba(229, 224, 213, 0.85);
}

/* Light Mode Card Styling */
[data-theme="light"] .card {
  box-shadow: 0 4px 24px rgba(58, 58, 58, 0.10);
  background: var(--color-bg-secondary);
}

[data-theme="light"] .card:hover,
[data-theme="light"] .profile-card:hover,
[data-theme="light"] .metric-item:hover,
[data-theme="light"] .competency-item:hover,
[data-theme="light"] .experience-card:hover,
[data-theme="light"] .work-card:hover,
[data-theme="light"] .tech-item:hover,
[data-theme="light"] .tag:hover {
  box-shadow: 0 8px 32px rgba(196, 136, 15, 0.12);
  background-color: #F5D796 !important;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Light Mode Hover Text Contrast Optimization */
[data-theme="light"] .card:hover .competency-title,
[data-theme="light"] .competency-item:hover .competency-title,
[data-theme="light"] .work-card:hover .work-title,
[data-theme="light"] .experience-card:hover .exp-title,
[data-theme="light"] .diary-card:hover .diary-title,
[data-theme="light"] .news-card:hover .news-title {
  color: #8B5A2B !important;
}

[data-theme="light"] .card:hover .competency-desc,
[data-theme="light"] .card:hover .description,
[data-theme="light"] .card:hover .metric-label,
[data-theme="light"] .card:hover .tags-label,
[data-theme="light"] .card:hover .exp-bullets,
[data-theme="light"] .card:hover .diary-summary,
[data-theme="light"] .card:hover .news-summary,
[data-theme="light"] .card:hover .diary-meta,
[data-theme="light"] .card:hover .diary-preview,
[data-theme="light"] .card:hover .diary-content summary,
[data-theme="light"] .card:hover .diary-content .full-text,
[data-theme="light"] .competency-item:hover .competency-desc,
[data-theme="light"] .metric-item:hover .metric-label,
[data-theme="light"] .experience-card:hover .exp-bullets,
[data-theme="light"] .tech-item:hover span:not(.tech-icon),
[data-theme="light"] .tag:hover {
  color: #333333 !important;
}

/* Light Mode Metric Cards */
[data-theme="light"] .metric-item {
  box-shadow: inset 0 1px 3px rgba(196, 136, 15, 0.08);
}

/* Light Mode Competency Cards */
[data-theme="light"] .competency-item {
  box-shadow: 0 2px 12px rgba(196, 136, 15, 0.10);
}

/* Light Mode Experience Cards */
[data-theme="light"] .experience-card {
  box-shadow: 0 2px 12px rgba(58, 58, 58, 0.08);
}

/* Light Mode Work Card */
[data-theme="light"] .work-card {
  box-shadow: 0 4px 20px rgba(196, 136, 15, 0.10);
}

/* Pop Art Style Background Patterns */
[data-theme="light"] {
  --dot-pattern: radial-gradient(circle, rgba(196, 136, 15, 0.05) 1px, transparent 1px);
  --dot-size: 20px;
}

/* Apply subtle dot pattern to body background */
[data-theme="light"] body {
  background: linear-gradient(135deg, transparent 0%, transparent 100%), 
              var(--dot-pattern) 0 0 / var(--dot-size) var(--dot-size);
  background-color: #D9D2C5;
}

/* Add diagonal stripe accent to header */
[data-theme="light"] header {
  position: sticky;
  top: 0;
}

[data-theme="light"] header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 100%;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(184, 85, 85, 0.04) 10px,
    rgba(184, 85, 85, 0.04) 20px
  );
  pointer-events: none;
  border-radius: 0 0 0 16px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--primary-bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: var(--line-height-normal);
  font-size: 16px;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  padding: var(--spacing-xl);
  background: var(--color-bg-header);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--spacing-xl);
  max-width: 100%;
}

.logo {
  font-weight: 700;
  font-size: var(--font-size-2xl);
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: center; /* 居中 */
  align-items: center;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: 600; /* 保持较粗的字体，增加可见性 */
  transition: all var(--transition-fast);
  padding: var(--spacing-sm) var(--spacing-md);
  position: relative;
  display: inline-block;
}

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

.nav-link.active {
  color: var(--color-primary); /* 活动项颜色设为主题蓝 */
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

/* List Layouts for New Pages */
.list-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Diary Card Styles */
.diary-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
}

.diary-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xs);
}

.diary-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.diary-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  font-family: monospace;
}

.diary-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: calc(-1 * var(--spacing-sm));
  margin-bottom: var(--spacing-sm);
  display: flex;
  gap: var(--spacing-sm);
  opacity: 0.8;
  align-items: center;
}

.meta-divider {
  opacity: 0.4;
  font-size: 0.8em;
}

.diary-preview {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-sm);
}

/* Hide preview when content is expanded */
.diary-card:has(details[open]) .diary-preview,
.news-card:has(details[open]) .news-summary {
  display: none;
}

.diary-content {
  cursor: pointer;
}

.diary-content summary {
  list-style: none;
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.diary-content summary::before {
  content: '▶';
  font-size: 0.7em;
  transition: transform 0.3s;
}

.diary-content[open] summary::before {
  transform: rotate(90deg);
}

.diary-content[open] summary {
  margin-bottom: var(--spacing-md);
}

.diary-content .full-text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  cursor: default;
}

.diary-content .full-text p {
  margin-bottom: var(--spacing-md);
}

/* News Card Styles */
.news-card {
  padding: var(--spacing-xl);
}

.news-content {
  margin-top: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  cursor: pointer;
}

.news-content summary {
  list-style: none;
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.news-content summary::before {
  content: '▶';
  font-size: 0.7em;
  transition: transform 0.3s;
}

.news-content[open] summary::before {
  transform: rotate(90deg);
}

.news-content[open] summary {
  margin-bottom: var(--spacing-md);
}

.news-content .full-text {
  cursor: default;
}

.news-content h3 {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.news-content p {
  margin-bottom: var(--spacing-md);
}

.news-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

.news-content li {
  margin-bottom: var(--spacing-xs);
}

.news-content .highlight-box {
  background: var(--color-bg-tertiary);
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.news-content .news-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  font-size: var(--font-size-sm);
}

.news-table th, .news-table td {
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
}

.news-table th {
  background: var(--color-bg-tertiary);
  color: var(--color-primary);
}

.news-source {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  display: inline-block;
  letter-spacing: 0.1em;
}

.news-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.news-summary {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

/* Page Header */
.page-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  padding-top: var(--spacing-xl);
}

.page-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

html:not([data-theme="light"]) .page-title {
  text-shadow: 0 0 15px rgba(0, 245, 255, 0.5);
}

.page-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

/* Responsive Overrides */
@media (max-width: 768px) {
  .page-title {
    font-size: var(--font-size-3xl);
  }
}

/* Theme Toggle Button */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: 1.2rem;
  padding: 0;
}

.theme-toggle:hover {
  background: var(--color-primary-bg-lighter2);
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* Main Content */
.content {
  padding: var(--spacing-xl);
  flex: 1;
  transition: background-color var(--transition-normal);
}

/* Card Styles */
.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-bg-lighter2);
  transition: all var(--transition-fast);
}

/* Profile Card */
.profile-card {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 350px;
}

.avatar {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-xl);
  object-fit: cover;
  object-position: center 15%;
  border: 3px solid var(--color-primary);
  box-shadow: var(--shadow-primary);
}

.profile-name {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

/* Badge/Label */
.badge {
  display: inline-block;
  background: var(--color-primary-bg-lighter);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary-light);
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-normal);
}

/* Title */
.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  word-wrap: break-word;
}

.title-highlight {
  color: var(--color-primary);
}

.title-highlight.gold {
  color: var(--color-accent);
}

/* Description */
.description {
  color: var(--color-text-description);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-loose);
  margin-bottom: var(--spacing-xl);
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: 0;
}

.metric-item {
  background: var(--color-bg-overlay);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
}

.metric-value {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.metric-label {
  font-size: var(--font-size-md);
  color: var(--color-text-tertiary);
}

/* Tags */
.tags-section {
  margin-bottom: var(--spacing-lg);
}

.tags-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.tag {
  background: var(--color-primary-bg-light);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary-light);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-normal);
}

/* Competencies */
.competencies {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.competency-item {
  background: var(--color-primary-bg-lighter2);
  border: 1px solid var(--color-primary-border-light);
  border-radius: var(--card-radius);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.competency-title {
  color: var(--color-primary);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.competency-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
}

/* Work Section */
.work-card {
  background: linear-gradient(135deg, var(--color-primary-bg-lighter2), var(--color-accent-bg-lightest));
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.work-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.work-badge {
  background: var(--color-accent-bg-lighter);
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent-light);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-normal);
}

.work-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.work-demo {
  background: var(--color-bg-overlay);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-base);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xl);
}

/* Tech Stack */
.tech-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.tech-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-base);
  font-size: var(--font-size-base);
  transition: all var(--transition-normal);
}

.tech-icon {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

/* Experience Cards */
.experience-section {
  margin-bottom: var(--spacing-lg);
}

.experience-card {
  background: var(--color-bg-overlay);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.exp-period {
  color: var(--color-accent);
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.exp-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.exp-bullets {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.exp-bullets li {
  margin-left: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.exp-bullets .bullet-icon {
  color: var(--color-primary);
  margin-right: var(--spacing-sm);
}

/* Footer */
footer {
  padding: var(--spacing-2xl) var(--spacing-xl);
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-md);
  transition: all var(--transition-normal);
}

.footer-button {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: var(--radius-pill-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: var(--spacing-xl);
}

.footer-button:hover {
  background: var(--color-primary-dark);
  transform: scale(1.05);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.hero{
  position:relative;
  margin-bottom: var(--spacing-3xl);
  border-radius: calc(var(--card-radius) + 8px);
  overflow:hidden;
  background: linear-gradient(180deg, rgba(0, 245, 255, 0.05) 0%, rgba(255, 0, 255, 0.04) 45%, rgba(0,0,0,0) 100%);
  border: 1px solid var(--color-primary-border-light);
}

.hero-bg{
  position:absolute;
  inset:0;
  pointer-events:none;
  z-index:0;
}

.hero-bg::before{
  content:"";
  position:absolute;
  inset:-20%;
  background:
    radial-gradient(700px 360px at 30% 28%, rgba(255, 0, 255, 0.22), transparent 55%),
    radial-gradient(760px 420px at 70% 38%, rgba(0, 245, 255, 0.18), transparent 60%),
    radial-gradient(640px 420px at 45% 75%, rgba(96, 253, 255, 0.10), transparent 62%);
  filter: blur(6px);
  opacity: .9;
}

.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background: radial-gradient(circle at 50% 45%, rgba(19, 26, 43, 0.0) 0%, rgba(19, 26, 43, 0.55) 60%, rgba(19, 26, 43, 0.92) 100%);
}

.hero-fragments{
  position:absolute;
  inset:0;
  overflow:hidden;
}

.hero-fragment{
  position:absolute;
  left:50%;
  top:46%;
  transform: translate(calc(var(--x, 0px) * 1px), calc(var(--y, 0px) * 1px)) scale(var(--s, 1));
  opacity: var(--o, .55);
  padding: 8px 12px;
  border-radius: var(--radius-pill-lg);
  background: rgba(30, 41, 59, 0.52);
  border: 1px solid rgba(0, 245, 255, 0.18);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  letter-spacing: 0.02em;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.35);
  white-space: nowrap;
  will-change: transform, opacity;
  transition: transform 0.9s cubic-bezier(0.2, 0.9, 0.2, 1), opacity 0.9s cubic-bezier(0.2, 0.9, 0.2, 1);
  transition-delay: calc(var(--d, 0) * 1ms);
  animation: heroFloat 5.8s ease-in-out infinite;
  animation-delay: calc(var(--fd, 0) * 1ms);
}

.hero.is-assembled .hero-fragment{
  transform: translate(calc(var(--tx, 0px) * 1px), calc(var(--ty, 0px) * 1px)) scale(var(--ts, 0.96));
  opacity: var(--to, .22);
}

@keyframes heroFloat{
  0%,100%{transform: translate(calc(var(--x, 0px) * 1px), calc(var(--y, 0px) * 1px)) scale(var(--s, 1))}
  50%{transform: translate(calc((var(--x, 0px) + 10) * 1px), calc((var(--y, 0px) - 10) * 1px)) scale(var(--s, 1))}
}

.hero-content{
  position:relative;
  z-index:2;
  padding: calc(var(--spacing-3xl) + 0.5rem) var(--spacing-3xl);
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.hero-badges{
  display:flex;
  gap: var(--spacing-sm);
  justify-content:center;
  margin-bottom: var(--spacing-xl);
  flex-wrap:wrap;
}

.hero-badge{
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: var(--radius-pill-lg);
  background: rgba(0, 245, 255, 0.08);
  border: 1px solid rgba(0, 245, 255, 0.25);
  color: var(--color-primary);
}

.hero-badge-accent{
  background: rgba(255, 0, 255, 0.08);
  border-color: rgba(255, 0, 255, 0.25);
  color: var(--color-accent-light);
}

.hero-title{
  display:flex;
  flex-direction:column;
  gap: 10px;
  align-items:center;
  margin-bottom: var(--spacing-xl);
}

.hero-title-line{
  display:block;
  font-size: clamp(2.1rem, 3.6vw, 3.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  opacity: 0;
  filter: blur(14px);
  transform: translateY(14px);
}

.hero.is-ready .hero-title-line-1{
  animation: heroTitleIn 0.75s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
}

.hero.is-ready .hero-title-line-2{
  animation: heroLine2In 0.8s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
  animation-delay: 140ms;
}

@keyframes heroTitleIn{
  to{opacity:1;filter:blur(0);transform:translateY(0)}
}

@keyframes heroLine2In{
  to{opacity:1;filter:blur(0);transform:translateY(0) scale(1.02)}
}

.hero-subtitle{
  max-width: 900px;
  margin: 0 auto var(--spacing-2xl);
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 1.3vw, 1.25rem);
  line-height: var(--line-height-relaxed);
  opacity: 0;
  transform: translateY(10px);
}

.hero.is-ready .hero-subtitle{
  animation: heroSubIn 0.7s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
  animation-delay: 340ms;
}

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

.hero-actions{
  display:flex;
  gap: var(--spacing-lg);
  justify-content:center;
  flex-wrap:wrap;
}

.hero-btn{
  min-height: 44px;
  padding: 12px 18px;
  border-radius: var(--radius-pill-lg);
  font-size: var(--font-size-lg);
  font-weight: 700;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  border: 1px solid transparent;
  user-select:none;
}

.hero-btn-primary{
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.20), rgba(255, 0, 255, 0.12));
  border-color: rgba(0, 245, 255, 0.28);
  color: var(--color-text-primary);
  box-shadow: 0 0 0 1px rgba(0, 245, 255, 0.10) inset, 0 18px 44px rgba(0,0,0,0.35);
}

.hero-btn-secondary{
  background: rgba(30, 41, 59, 0.55);
  border-color: rgba(255, 0, 255, 0.22);
  color: var(--color-text-primary);
}

.hero-btn:hover{
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 0 18px rgba(0, 245, 255, 0.14), 0 0 18px rgba(255, 0, 255, 0.10);
}

.hero-btn:active{
  transform: translateY(0) scale(0.99);
}

@media (max-width: 768px){
  .hero-content{
    padding: var(--spacing-2xl) var(--spacing-xl);
  }
  .hero-actions{
    flex-direction:column;
    align-items:stretch;
  }
  .hero-btn{
    width:100%;
  }
  .hero-fragment{
    padding: 6px 10px;
    font-size: var(--font-size-xs);
    opacity: .35;
  }
  .hero.is-assembled .hero-fragment{
    opacity: .12;
  }
}

@media (prefers-reduced-motion: reduce){
  .hero-fragment{animation:none;transition:none}
  .hero-title-line,.hero-subtitle{animation:none!important;opacity:1;filter:none;transform:none}
}

.card.visible,
.competency-item.visible,
.experience-card.visible,
.tech-item.visible {
  animation: fadeInUp 0.6s ease forwards;
}

.competency-item.visible:nth-child(2) { animation-delay: 0.1s; }
.competency-item.visible:nth-child(3) { animation-delay: 0.2s; }
.experience-card.visible:nth-child(2) { animation-delay: 0.1s; }
.experience-card.visible:nth-child(3) { animation-delay: 0.2s; }

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  z-index: 1000;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* Focus Styles for Accessibility */
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* Profile Wrapper */
.profile-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Responsive - Tablet and Desktop */
@media (min-width: 768px) {
  .profile-wrapper {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    align-items: flex-start;
  }

  .profile-card {
    padding: var(--spacing-2xl) var(--spacing-xl);
    height: 96.5%;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .content {
    padding: var(--spacing-3xl) var(--spacing-2xl);
  }

  .card {
    padding: var(--spacing-2xl);
  }

  .section-title {
    font-size: var(--font-size-5xl);
  }

  .metrics-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .competencies {
    grid-template-columns: repeat(3, 1fr);
  }

  .tech-stack {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Responsive - Mobile */
@media (max-width: 480px) {
  header {
    padding: var(--spacing-lg);
  }

  .header-nav {
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-sm);
  }

  .logo {
    font-size: var(--font-size-xl);
    order: 1;
  }

  .theme-toggle {
    order: 2;
  }

  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xs);
  }

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

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

  .profile-card {
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: auto;
  }

  .avatar {
    width: 100px;
    height: 100px;
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .metrics-grid {
    gap: var(--spacing-md);
  }

  .metric-item {
    padding: var(--spacing-md);
  }

  .metric-value {
    font-size: var(--font-size-2xl);
  }

  .competencies {
    gap: var(--spacing-md);
  }

  .competency-item {
    padding: var(--spacing-lg);
  }

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

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

  .work-badge {
    font-size: var(--font-size-xs);
    padding: 2px var(--spacing-sm);
  }
}

/* Global scroll container fix */
html,
body {
  height: 100%;
}

body {
  min-height: 100vh;
}

.container {
  min-height: 100vh;
}

.content {
  flex: 1 1 auto;
}