/* ==========================================================================
   Design System & Theme Tokens
   ========================================================================== */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Light Theme (Default) */
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --surface-hover: #f1f5f9;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #94a3b8;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff6ff;
  --badge-bg: #e0e7ff;
  --badge-text: #3730a3;
  --tag-bg: #f1f5f9;
  --tag-text: #334155;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
}

[data-theme="dark"] {
  --bg-color: #0b0f19;
  --surface-color: #111827;
  --surface-hover: #1f2937;
  --border-color: #1f2937;
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-subtle: #6b7280;
  --accent: #60a5fa;
  --accent-hover: #93c5fd;
  --accent-light: rgba(96, 165, 250, 0.12);
  --badge-bg: rgba(96, 165, 250, 0.18);
  --badge-text: #93c5fd;
  --tag-bg: #1f2937;
  --tag-text: #cbd5e1;
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.4);
  --shadow-md: 0 4px 12px 0 rgb(0 0 0 / 0.5);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-main);
  transition: background-color 0.2s ease, color 0.2s ease;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(248, 250, 252, 0.88);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

[data-theme="dark"] .site-header {
  background-color: rgba(11, 15, 25, 0.88);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.site-logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo .dot {
  width: 9px;
  height: 9px;
  background-color: var(--accent);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.25rem;
}

@media (max-width: 680px) {
  .nav-links {
    display: none;
  }
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.92rem;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--accent);
}

.btn-resume-header {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  color: var(--text-main);
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-resume-header:hover {
  border-color: var(--accent);
  color: var(--accent);
  background-color: var(--surface-hover);
}

.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.45rem;
  border-radius: 0.5rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s, color 0.15s;
}

.theme-toggle-btn:hover {
  background-color: var(--surface-hover);
  color: var(--text-main);
}

.theme-toggle-btn svg {
  width: 1.15rem;
  height: 1.15rem;
}

/* ==========================================================================
   Hero & Splash Header
   ========================================================================== */
.hero-splash {
  padding: 3.5rem 0 2rem;
}

.hero-profile {
  display: flex;
  align-items: flex-start;
  gap: 1.75rem;
  margin-bottom: 1.75rem;
}

@media (max-width: 580px) {
  .hero-profile {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

.hero-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 3px solid var(--surface-color);
  box-shadow: var(--shadow-md);
  object-fit: cover;
  flex-shrink: 0;
}

.hero-info {
  flex: 1;
}

.hero-name {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  line-height: 1.15;
}

.location-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 1rem;
  background-color: var(--surface-hover);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.hero-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.35rem;
  margin-bottom: 0.25rem;
}

.hero-tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

@media (max-width: 580px) {
  .hero-actions {
    justify-content: center;
  }
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--accent);
  color: #ffffff;
  padding: 0.6rem 1.15rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.15s ease, transform 0.15s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background-color: var(--surface-color);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.1rem;
  border-radius: 0.5rem;
  font-weight: 500;
  font-size: 0.92rem;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ==========================================================================
   Resume Sections
   ========================================================================== */
.resume-section {
  padding: 2.75rem 0;
  border-top: 1px solid var(--border-color);
}

.section-heading {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Executive Summary Box */
.summary-box {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent);
  border-radius: 0.5rem;
  padding: 1.35rem 1.5rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}

/* Skills Matrix */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-category-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.skill-category-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.skills-pill-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.skill-badge {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.25rem 0.55rem;
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
}

/* Work Experience Timeline */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.job-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease;
}

.job-card:hover {
  border-color: var(--accent);
}

.job-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.job-company-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.job-company {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.job-location {
  font-size: 0.85rem;
  color: var(--text-subtle);
}

.job-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border-radius: 1rem;
}

.job-role {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.15rem;
}

.job-period {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--surface-hover);
  padding: 0.2rem 0.6rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-color);
}

.job-context {
  font-size: 0.9rem;
  color: var(--text-subtle);
  margin-bottom: 0.85rem;
}

.job-bullets {
  margin-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.job-bullets li {
  margin-bottom: 0.5rem;
}

/* Project Cards */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

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

.project-card-title {
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.project-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.tag-pill {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 0.375rem;
}

.project-card-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.project-card-links a {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.project-card-links a:hover {
  text-decoration: underline;
}

/* Education & Misc */
.education-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

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

@media (min-width: 640px) {
  .misc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.misc-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.15rem;
}

.misc-card h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

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

/* ==========================================================================
   Footer
   ========================================================================= */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ==========================================================================
   Print Stylesheet (@media print)
   ========================================================================= */
@media print {
  .no-print {
    display: none !important;
  }

  body {
    background-color: #ffffff !important;
    color: #000000 !important;
    font-size: 11pt;
    line-height: 1.4;
  }

  .container {
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .hero-splash {
    padding: 0 0 1rem 0 !important;
  }

  .resume-section {
    padding: 1rem 0 !important;
    border-top: 1px solid #ccc !important;
    break-inside: avoid;
  }

  .job-card, .skill-category-card, .education-card, .summary-box {
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    background: transparent !important;
    break-inside: avoid;
  }

  .job-bullets {
    margin-left: 1.2rem !important;
  }

  .job-bullets li {
    margin-bottom: 0.25rem !important;
  }

  .skill-badge {
    border: 1px solid #ddd !important;
    background-color: #f5f5f5 !important;
    color: #000 !important;
  }
}