/* ==========================================================================
   Adrian Wedd CV - Professional Minimal Stylesheet
   Dark-first, text-first, no spectacle
   ========================================================================== */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Colors - Dark Theme (default) */
  --color-primary: #8ac7d9;

  --color-background: #070a0f;
  --color-background-alt: #0d1117;
  --color-background-card: #070a0f;
  --color-surface: #111820;

  --color-text-primary: #e9eef6;
  --color-text-secondary: #a8b3c2;
  --color-text-muted: #666666;
  --color-text-inverse: #070a0f;

  --color-border: rgba(233, 238, 246, 0.10);
  --color-border-light: rgba(233, 238, 246, 0.06);
  --color-border-focus: #8ac7d9;

  --color-selection: rgba(138, 199, 217, 0.25);

  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1.0625rem; /* 17px */
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  --font-weight-normal: 400;
  --font-weight-semibold: 600;

  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.7;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Layout */
  --max-width-content: 720px;
  --container-padding: var(--space-6);
  --section-spacing: var(--space-8);

  /* Border Radius */
  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;

  /* Shadows - none */
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;

  /* Z-index Scale */
  --z-sticky: 1020;
  --z-fixed: 1030;
}

/* Light Theme */
[data-theme="light"] {
  --color-background: #f5f5f0;
  --color-background-alt: #eeeee8;
  --color-background-card: #f5f5f0;
  --color-surface: #e8e8e2;

  --color-text-primary: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-muted: #888888;
  --color-text-inverse: #f5f5f0;

  --color-primary: #4a7a8c;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-light: rgba(0, 0, 0, 0.04);
  --color-border-focus: #4a7a8c;
  --color-selection: rgba(74, 122, 140, 0.20);
}

[data-theme="light"] #curvature-bg {
  display: none;
}

::selection {
  background: var(--color-selection);
}

/* ==========================================================================
   Curvature Field Background
   ========================================================================== */

#curvature-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ==========================================================================
   Theme Toggle
   ========================================================================== */

.theme-toggle {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  width: 40px;
  height: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color var(--transition-normal);
  z-index: var(--z-fixed);
}

.theme-toggle:hover {
  border-color: var(--color-text-muted);
}

.theme-icon {
  font-size: var(--font-size-lg);
}

/* ==========================================================================
   Container & Layout
   ========================================================================== */

.container {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Header Section
   ========================================================================== */

.header {
  padding: var(--space-16) 0 var(--space-12);
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.header-content {
  position: relative;
}

.name {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
}

.location {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* Contact Links */
.contact-links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.contact-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-normal);
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}

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

/* ==========================================================================
   Main Content & Sections
   ========================================================================== */

.main-content {
  flex: 1;
}

.section {
  display: block;
  margin-bottom: var(--section-spacing);
}

.section-header {
  margin-bottom: var(--space-6);
}

.section-title {
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0;
}

.section-subtitle {
  display: none;
}

/* ==========================================================================
   About Section
   ========================================================================== */

.professional-summary {
  margin-bottom: var(--space-6);
}

.summary-text {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.core-competencies {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.competency-title {
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-4);
}

.competency-grid {
  display: grid;
  gap: 0.75rem;
}

.competency-item {
  display: flex;
  gap: var(--space-4);
  padding: 0;
}

.competency-icon {
  display: none;
}

.competency-name {
  font-size: 0.9rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 0;
}

.competency-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

/* ==========================================================================
   Loading States
   ========================================================================== */

.timeline-loading,
.projects-loading,
.skills-loading,
.achievements-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-12);
  color: var(--color-text-muted);
}

.loading-spinner.small {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top: 2px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  margin-top: var(--space-12);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  margin-bottom: var(--space-4);
}

.footer-info {
  flex: 1;
}

.footer-text {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

.footer-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.footer-title {
  color: var(--color-text-secondary);
}

.footer-separator {
  color: var(--color-text-muted);
}

.footer-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer-links {
  display: none;
}

.footer-bottom {
  padding-top: var(--space-4);
}

.system-info {
  display: none;
}

.copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Timeline & Experience Styles
   ========================================================================== */

.timeline-item {
  position: relative;
  padding-top: var(--space-6);
  margin-bottom: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.timeline-item:first-child {
  border-top: none;
  padding-top: 0;
}

.timeline-marker {
  display: none;
}

.timeline-content {
  padding: 0;
}

.timeline-header {
  margin-bottom: var(--space-3);
}

.position-title {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-1) 0;
}

.company-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.company-name {
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
}

.timeline-period {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.timeline-description {
  margin-bottom: var(--space-4);
}

.timeline-description p {
  margin: 0 0 var(--space-4) 0;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* Achievement List Styles */
.achievement-list {
  margin: var(--space-4) 0;
  padding-left: var(--space-6);
  list-style: none;
}

.achievement-list li {
  position: relative;
  margin-bottom: var(--space-2);
  padding-left: var(--space-4);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

.achievement-list li::before {
  content: "\2013";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

/* Technology Tags Styles */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.tech-tag {
  display: inline-block;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  font-family: var(--font-family-mono);
  letter-spacing: 0.04em;
}

.tech-tag::after {
  content: ",";
}

.tech-tag:last-child::after {
  content: "";
}

/* Project Technology Badges */
.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.tech-badge {
  display: inline-block;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  font-family: var(--font-family-mono);
  letter-spacing: 0.04em;
}

/* Project Items */
.project-card {
  padding-top: var(--space-6);
  margin-bottom: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.project-card:first-child {
  border-top: none;
  padding-top: 0;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-3);
}

.project-title {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.project-link:hover {
  text-decoration: underline;
}

.project-description {
  margin-bottom: var(--space-3);
}

.project-description p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.project-metrics {
  display: flex;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

.metric-item {
  display: flex;
  gap: var(--space-2);
}

.metric-value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

.metric-label {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* Skill Styles */
.skill-category {
  margin-bottom: var(--space-6);
}

.skill-category-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.skill-items {
  display: grid;
  gap: var(--space-3);
}

.skill-item {
  padding: var(--space-2) 0;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-1);
}

.skill-name {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.skill-level {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-family: var(--font-family-mono);
}


/* Achievement Styles */
.achievement-card {
  padding-top: var(--space-4);
  margin-bottom: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.achievement-card:first-child {
  border-top: none;
  padding-top: 0;
}

.achievement-icon {
  display: none;
}

.achievement-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.achievement-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-relaxed);
}

.achievement-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.achievement-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.achievement-link:hover {
  text-decoration: underline;
}

/* Contact Links Styles (for PDF/Print buttons) */
.contact-link.pdf,
.contact-link.print-btn {
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-4);
    --section-spacing: var(--space-12);
  }

  .header {
    padding: var(--space-12) 0 var(--space-8);
  }

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

  .contact-links {
    gap: var(--space-4);
  }

  .footer-text {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .footer-separator {
    display: none;
  }
}

@media (max-width: 480px) {
  .contact-links {
    flex-direction: column;
    gap: var(--space-2);
  }

}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  :root {
    --color-primary: #333333;
    --color-background: #ffffff;
    --color-background-alt: #ffffff;
    --color-background-card: #ffffff;
    --color-surface: #f5f5f5;
    --color-text-primary: #000000;
    --color-text-secondary: #333333;
    --color-text-muted: #666666;
    --color-border: #cccccc;
  }

  #curvature-bg,
  .theme-toggle,
  .footer-links {
    display: none !important;
  }

  .container {
    max-width: none !important;
    margin: 0 !important;
    padding: 0 1rem !important;
  }

  .header {
    padding: var(--space-4) 0;
    border-bottom: 2px solid black;
  }

  .section {
    display: block !important;
    page-break-inside: avoid;
    margin-bottom: var(--space-4) !important;
  }

  .section-title {
    border-bottom: 1px solid #999;
    padding-bottom: var(--space-1);
  }

  .footer {
    page-break-inside: avoid;
    margin-top: var(--space-4);
  }
}

/* ==========================================================================
   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;
  }
}

/* Focus styles */
*:focus {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #ffffff;
    --color-text-secondary: #ffffff;
  }
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}