/* Modern color scheme based on color theory principles */
:root {
  /* Primary color palette */
  --primary: #5b406a;        /* Main purple - trust, creativity */
  --primary-light: #7a5a8a;  /* Lighter purple for hover states */
  --primary-dark: #4a3458;   /* Darker purple for depth */
  --primary-bg: #f8f6f9;     /* Very light purple for backgrounds */
  
  /* Accent color palette */
  --accent: #d2b71f;         /* Golden yellow - energy, optimism */
  --accent-light: #e6c94a;   /* Lighter gold for highlights */
  --accent-dark: #c4a52a;    /* Darker gold for depth */
  --accent-contrast: #2d2a1f; /* Dark text on gold */
  
  /* Neutral color palette */
  --neutral: #313647;        /* Dark blue-gray - stability */
  --neutral-light: #4a5162;  /* Lighter neutral for borders */
  --neutral-dark: #252a35;   /* Darker neutral for depth */
  
  /* Background and text colors */
  --bg: #1a1d26;             /* Dark background using neutral */
  --bg-secondary: #252a35;   /* Secondary background */
  --panel: #2a2f3d;          /* Panel background */
  --text: #e8e9ea;           /* Primary text */
  --text-muted: #a8abb0;     /* Muted text */
  --text-inverse: #1a1d26;   /* Text on light backgrounds */
  
  /* Border and shadow colors */
  --border: #3a3f4e;         /* Standard borders */
  --border-light: #4a5162;   /* Light borders */
  --shadow: rgba(49, 54, 71, 0.3); /* Shadow color */
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  display: flex;
  flex-direction: column;
  background-image: 
    /* Subtle dot pattern */
    radial-gradient(circle at 25% 25%, rgba(91, 64, 106, 0.1) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, rgba(210, 183, 31, 0.08) 1px, transparent 1px),
    /* Subtle grid pattern */
    linear-gradient(90deg, rgba(49, 54, 71, 0.05) 1px, transparent 1px),
    linear-gradient(0deg, rgba(49, 54, 71, 0.05) 1px, transparent 1px);
  background-size: 
    40px 40px,  /* Dot pattern size */
    40px 40px,  /* Dot pattern size */
    20px 20px,  /* Grid pattern size */
    20px 20px;  /* Grid pattern size */
  background-position: 
    0 0, 20px 20px,  /* Offset dot patterns */
    0 0, 0 0;        /* Grid patterns */
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
  width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--primary) 85%, transparent);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 8px var(--shadow);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px clamp(20px, 4vw, 48px);
}

.site-title {
  margin: 0;
  font-size: 1.125rem;
  color: var(--accent-light);
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  margin-left: 16px;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.2s ease;
  font-weight: 500;
}

.site-nav a:hover, .site-nav a:focus {
  background: var(--accent);
  color: var(--accent-contrast);
  transform: translateY(-1px);
}

.site-main {
  padding-top: 32px;
  padding-bottom: 64px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.hero {
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 10px 30px var(--shadow);
}

h2, h3 {
  line-height: 1.25;
  margin-top: 0;
  color: var(--text);
}

h2 {
  color: var(--accent-light);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

h3 {
  color: var(--accent-dark);
}

h4 {
  color: var(--accent-dark);
  font-size: 0.875rem;
  font-weight: 600;
}

section + section {
  margin-top: 32px;
}

/* Enhanced visual hierarchy */
ul, ol {
  color: var(--text);
}

li {
  margin-bottom: 8px;
}

/* Link styles */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-light);
  text-decoration: underline;
}

/* Enhanced focus states for accessibility */
*:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Selection colors */
::selection {
  background: var(--accent);
  color: var(--accent-contrast);
}

.button {
  display: inline-block;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: var(--accent-contrast);
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(210, 183, 31, 0.4);
  transition: transform 0.06s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(210, 183, 31, 0.5);
  background: linear-gradient(180deg, var(--accent-light), var(--accent));
}

.button:active {
  transform: translateY(0);
  filter: brightness(0.95);
}

.status {
  min-height: 1.2em;
  color: var(--text-muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--neutral-dark);
  padding: 24px 0;
}

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

/* Responsive tweaks */
@media (max-width: 600px) {
  .container { padding: 0 20px; }
  .site-header .container { flex-wrap: wrap; gap: 8px; }
  .site-nav a { margin-left: 8px; }
  .hero { padding: 20px; }
  
  /* Adjust pattern size for mobile */
  body {
    background-size: 
      30px 30px,  /* Smaller dot pattern for mobile */
      30px 30px,  
      15px 15px,  /* Smaller grid pattern for mobile */
      15px 15px;
  }
}

@media (min-width: 1200px) {
  /* Larger pattern for big screens */
  body {
    background-size: 
      50px 50px,  /* Larger dot pattern for desktop */
      50px 50px,  
      25px 25px,  /* Larger grid pattern for desktop */
      25px 25px;
  }
}


/* Widget panel styles */
.widget-panel { 
  margin-bottom: 16px; 
  padding: 16px; 
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--panel) 100%); 
  border: 1px solid var(--border); 
  border-radius: 12px; 
  display: flex; 
  gap: 16px; 
  align-items: center; 
  flex-wrap: wrap; 
  box-shadow: 0 4px 12px var(--shadow);
}
.widget-panel h4 { 
  margin: 0; 
  color: var(--text); 
  font-size: 0.875rem; 
  font-weight: 600; 
  min-width: 60px; 
}
.widget-item { 
  display: flex; 
  flex-direction: column; 
  align-items: center; 
  gap: 6px; 
  padding: 8px; 
  border-radius: 8px; 
  cursor: grab; 
  transition: background 0.2s ease; 
}
.widget-item:hover { 
  background: rgba(210, 183, 31, 0.15); 
}
.widget-item:active { 
  cursor: grabbing; 
}
.widget-preview { 
  width: 40px; 
  height: 40px; 
  display: grid; 
  place-items: center; 
  font-size: 0.75rem; 
  font-weight: 600; 
  color: var(--text-inverse); 
  border-radius: 6px; 
}
.widget-preview.rect { 
  background: #7c3aed; /* Brighter purple for better contrast */
  border-radius: 4px; 
}
.widget-preview.circle { 
  background: #f59e0b; /* Brighter orange-gold for better contrast */
  border-radius: 50%; 
}
.widget-preview.diamond { 
  background: #10b981; /* Bright emerald green for better contrast */
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}
.widget-item span { 
  font-size: 0.75rem; 
  color: var(--muted); 
}

/* Flow canvas styles */
.flow-toolbar { margin-bottom: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.flow-root { position: relative; height: 560px; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; background: var(--neutral-dark); }
.flow-svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: auto; }
.flow-board { position: absolute; inset: 0; }
.flow-node { position: absolute; color: var(--text-inverse); font-weight: 600; user-select: none; cursor: move; display: grid; place-items: center; }
.flow-node.rect { width: 120px; height: 64px; background: #7c3aed; border-radius: 10px; box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35); }
.flow-node.circle { width: 72px; height: 72px; background: #f59e0b; border-radius: 50%; box-shadow: 0 6px 18px rgba(245, 158, 11, 0.35); }
.flow-node.diamond { width: 86px; height: 86px; background: #10b981; clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%); box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35); }
.flow-node.diamond + .ports { 
  position: absolute; 
  width: 86px; 
  height: 86px; 
  pointer-events: none; 
  z-index: 10; 
}
.flow-node.diamond + .ports .flow-port { 
  position: absolute; 
  width: 10px; 
  height: 10px; 
  background: var(--accent); 
  border: 2px solid var(--neutral-dark); 
  border-radius: 50%; 
  transform: translate(-50%, -50%);
  pointer-events: auto;
}
.flow-node.diamond + .ports .flow-port.t { top: 0%; left: 50%; }
.flow-node.diamond + .ports .flow-port.b { top: 100%; left: 50%; }
.flow-node.diamond + .ports .flow-port.l { top: 50%; left: 0%; }
.flow-node.diamond + .ports .flow-port.r { top: 50%; left: 100%; }
.flow-node .ports { position: absolute; inset: 0; }
.flow-port { position: absolute; width: 10px; height: 10px; background: var(--accent); border: 2px solid var(--neutral-dark); border-radius: 50%; transform: translate(-50%, -50%); }
.flow-port.t { top: 0%; left: 50%; }
.flow-port.b { top: 100%; left: 50%; }
.flow-port.l { top: 50%; left: 0%; }
.flow-port.r { top: 50%; left: 100%; }
.flow-node:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.flow-connecting { pointer-events: none; }

/* Flow context menu */
.flow-menu { position: absolute; background: var(--neutral-dark); color: var(--text); border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 10px 30px var(--shadow); padding: 6px; display: none; z-index: 30; min-width: 140px; }
.flow-menu button { width: 100%; text-align: left; padding: 8px 10px; background: transparent; border: none; color: var(--text); border-radius: 8px; cursor: pointer; }
.flow-menu button:hover { background: var(--primary-dark); }

/* Projects page styles */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.project-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.2s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--shadow);
  border-color: var(--accent);
}

.project-card h2 {
  color: var(--accent);
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.project-card p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.project-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-tag {
  background: var(--primary);
  color: var(--text);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--accent-contrast);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(210, 183, 31, 0.3);
}

.btn-secondary {
  background: var(--primary);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(91, 64, 106, 0.3);
}

.project-stats {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  width: 100%;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}

.stat-item {
  text-align: center;
  padding: 1rem;
  background: var(--panel);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* Tool Familiarity List */
.tool-familiarity-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}

.tool-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.tool-item:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 15px var(--shadow);
}

.tool-name {
  min-width: 120px;
  font-weight: 600;
  color: var(--accent);
  font-size: 1rem;
}

.familiarity-spectrum {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

.spectrum-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-width: 60px;
  text-align: center;
}

.spectrum-bar {
  flex: 1;
  height: 8px;
  background: var(--neutral-dark);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.familiarity-level {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width 0.3s ease;
  position: relative;
}

.familiarity-level::after {
  content: '';
  position: absolute;
  right: -2px;
  top: -2px;
  width: 4px;
  height: 12px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(210, 183, 31, 0.5);
}

/* Responsive design for projects */
@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .tool-item {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }
  
  .tool-name {
    min-width: auto;
    text-align: center;
    order: 1;
  }
  
  .familiarity-spectrum {
    order: 2;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: stretch;
  }
  
  .spectrum-label {
    display: none;
  }
  
  .spectrum-bar {
    order: 2;
    margin: 0.5rem 0;
    height: 12px;
    flex: none;
    width: 100%;
    min-height: 12px;
  }
}