/* 
 * =========================================
 * DESIGN SYSTEM: AETHER AMETHYST
 * =========================================
 */
:root {
  --font-display: 'Outfit', system-ui, sans-serif;
  --font-code: 'JetBrains Mono', monospace;
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 
 * VARIANT 1: ECLIPSE (Dark Mode)
 */
[data-theme="eclipse"] {
  /* Base */
  --bg-deep: #13111B;
  --bg-surface: #1B1824;
  --bg-element: #252130;
  --bg-active: #2F2942;
  --border: #2E283B;

  /* Text */
  --fg-primary: #EDE8F5;
  --fg-secondary: #9B94A8;
  --fg-comment: #5C5269;

  /* Syntax */
  --syn-keyword: #9580FF;
  --syn-function: #FF70B8;
  --syn-type: #D2A8FF;
  --syn-string: #FF9CE6;
  --syn-number: #C26BFF;
  --syn-operator: #80FFEA;

  /* Semantic (Approach B) */
  --sem-error: #FF70B8;
  --sem-warning: #E0AF68;
  --sem-success: #80FFEA;
  --sem-info: #9580FF;

  /* FX */
  --shadow: rgba(0, 0, 0, 0.6);
  --accent-glow: rgba(189, 94, 255, 0.25);
  --logo-ring: var(--syn-function);
}

/* 
 * VARIANT 2: BLISS (Light Mode)
 */
[data-theme="bliss"] {
  /* Base */
  --bg-deep: #FDF7FF;
  --bg-surface: #F4EBFA;
  --bg-element: #EADCF5;
  --bg-active: #DCC2F0;
  --border: #DCC2F0;

  /* Text */
  --fg-primary: #3E3245;
  --fg-secondary: #746880;
  --fg-comment: #9E94A8;

  /* Syntax */
  --syn-keyword: #624CAB;
  --syn-function: #D1006B;
  --syn-type: #8839CE;
  --syn-string: #C22085;
  --syn-number: #7B1FA2;
  --syn-operator: #008B8B;

  /* Semantic (Approach B) */
  --sem-error: #D1006B;
  --sem-warning: #C79200;
  --sem-success: #008B8B;
  --sem-info: #624CAB;

  /* FX */
  --shadow: rgba(62, 50, 69, 0.1);
  --accent-glow: rgba(136, 57, 206, 0.15);
  --logo-ring: var(--syn-type);
}

/* RESET & BASE */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-deep);
  color: var(--fg-primary);
  font-family: var(--font-display);
  transition: background 0.5s var(--ease-smooth), color 0.5s;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
}

/* UTILITIES */
.text-err { color: var(--sem-error); }
.text-warn { color: var(--sem-warning); }
.text-success { color: var(--sem-success); }
.text-info { color: var(--sem-info); }

/* HERO SECTION */
.hero {
  text-align: center;
  padding: 5rem 1rem 4rem;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-logo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin-bottom: 2.5rem;
  border: 4px solid var(--bg-deep);
  box-shadow: 
    0 0 0 3px var(--logo-ring),
    0 0 60px var(--accent-glow);
  transition: all 0.5s var(--ease-elastic);
  cursor: pointer;
  object-fit: cover;
}

.hero-logo:hover {
  transform: scale(1.05) rotate(5deg);
  box-shadow: 
    0 0 0 3px var(--syn-keyword),
    0 0 80px var(--accent-glow);
}

.brand-badge {
  display: inline-block;
  background: var(--bg-active);
  color: var(--syn-function);
  padding: 0.5rem 1.5rem;
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px var(--accent-glow);
}

h1 {
  font-size: 4.5rem;
  line-height: 1;
  margin-bottom: 1.5rem;
  font-weight: 800;
  letter-spacing: -2px;
  background: linear-gradient(135deg, var(--syn-keyword), var(--syn-function));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

p.lead {
  font-size: 1.25rem;
  color: var(--fg-secondary);
  line-height: 1.6;
  margin-bottom: 3rem;
  max-width: 600px;
}

/* TOGGLES */
.toggle-capsule {
  background: var(--bg-surface);
  padding: 0.5rem;
  border-radius: 99px;
  display: inline-flex;
  gap: 0.5rem;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px var(--shadow);
}

.toggle-btn {
  border: none;
  background: transparent;
  color: var(--fg-secondary);
  padding: 0.75rem 2rem;
  border-radius: 99px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s var(--ease-elastic);
}

.toggle-btn:hover {
  color: var(--fg-primary);
}

.toggle-btn.active {
  background: var(--bg-active);
  color: var(--syn-keyword);
  box-shadow: 0 4px 15px var(--accent-glow);
  transform: scale(1.05);
}

/* PREVIEW STAGE */
.preview-stage {
  width: 100%;
  max-width: 1400px;
  padding: 2rem;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 2rem;
}

@media(max-width: 900px) {
  .preview-stage {
    grid-template-columns: 1fr;
  }
  h1 { font-size: 3rem; }
}

/* WINDOW COMPONENT */
.window {
  background: var(--bg-surface);
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: 0 30px 60px var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.window:hover {
  transform: translateY(-5px);
  box-shadow: 0 40px 80px var(--shadow);
  border-color: var(--syn-keyword);
}

.titlebar {
  background: var(--bg-surface);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  opacity: 0.8;
}
.close { background: var(--sem-error); }
.min { background: var(--sem-warning); }
.max { background: var(--sem-success); }

.win-title {
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--fg-secondary);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* CONTENT ZONES */
.terminal {
  padding: 1.5rem;
  font-family: var(--font-code);
  font-size: 0.9rem;
  background: var(--bg-deep);
  color: var(--fg-primary);
  height: 100%;
}

.prompt-char { color: var(--sem-success); font-weight: bold; margin-right: 0.5rem; }
.prompt-path { color: var(--syn-keyword); margin-right: 0.5rem; }
.caret {
  display: inline-block;
  width: 0.6em;
  height: 1.2em;
  background: var(--fg-secondary);
  animation: blink 1s infinite;
  vertical-align: bottom;
}
@keyframes blink { 50% { opacity: 0; } }

.gui-content {
  padding: 1.5rem;
  display: grid;
  gap: 1.5rem;
  background: var(--bg-surface);
}

.widget {
  background: var(--bg-element);
  border-radius: 12px;
  padding: 1.25rem;
  border: 1px solid var(--border);
}
.widget-head {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--fg-secondary);
  margin-bottom: 0.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}
.widget-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--fg-primary);
}
.progress-track {
  height: 6px;
  background: var(--bg-surface);
  border-radius: 3px;
  margin-top: 1rem;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 65%;
  background: linear-gradient(90deg, var(--syn-keyword), var(--syn-function));
}

.editor {
  font-family: var(--font-code);
  font-size: 14px; /* Slightly smaller for density */
  line-height: 1.6;
  background: var(--bg-surface);
  display: flex;
  height: 100%;
  min-height: 520px;
}
.gutter {
  width: 3.5rem;
  text-align: right;
  padding: 1.5rem 0.5rem 1.5rem 0;
  color: var(--fg-comment);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  user-select: none;
  display: flex;
  flex-direction: column;
  gap: 0; /* Align with code lines */
}

.gutter-row {
  height: 1.6em; /* Match code line-height */
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.5rem;
  padding-right: 0.5rem;
}

/* Git Signs */
.git-add { border-left: 2px solid var(--sem-success); padding-left: 2px; }
.git-mod { border-left: 2px solid var(--sem-warning); padding-left: 2px; }
.git-del { border-left: 2px solid var(--sem-error); padding-left: 2px; }

/* Code Area */
.code {
  flex: 1;
  padding: 1.5rem 1.5rem;
  overflow-x: auto;
  color: var(--fg-primary);
  position: relative;
}

.ln {
  display: block;
  height: 1.6em; /* Strict height for alignment */
  white-space: pre;
}

/* Active Line */
.ln.active {
  background: var(--bg-active);
  /* Extend background to full width */
  box-shadow: -1.5rem 0 0 var(--bg-active), 50vw 0 0 var(--bg-active); 
}

/* LSP: Squiggles */
.under-err {
  text-decoration: underline wavy var(--sem-error);
  text-underline-offset: 4px;
}
.under-warn {
  text-decoration: underline wavy var(--sem-warning);
  text-underline-offset: 4px;
}

/* LSP: Virtual Text (Ghost text at end of line) */
.virtual-text {
  margin-left: 2rem;
  font-style: italic;
  font-size: 0.85em;
  opacity: 0.8;
}
.vt-err { color: var(--sem-error); }
.vt-warn { color: var(--sem-warning); }
.vt-info { color: var(--fg-comment); }

/* LSP: Inlay Hints (The pill inside code) */
.inlay-hint {
  display: inline-block;
  font-size: 0.75em;
  background: var(--bg-element);
  color: var(--fg-secondary);
  padding: 0 4px;
  border-radius: 4px;
  margin: 0 4px;
  vertical-align: middle;
  border: 1px solid var(--border);
}

/* SYNTAX */
.k { color: var(--syn-keyword); font-weight: 600; }
.f { color: var(--syn-function); }
.t { color: var(--syn-type); font-style: italic; }
.s { color: var(--syn-string); }
.n { color: var(--syn-number); }
.o { color: var(--syn-operator); }
.c { color: var(--fg-comment); font-style: italic; }
.ns { color: var(--syn-type); }

/* PALETTE GRID */
.palette-section {
  width: 100%;
  max-width: 1000px;
  margin: 4rem auto;
  text-align: center;
}
.hex-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
}
.hex-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  cursor: pointer;
  transition: transform 0.2s;
}
.hex-card:hover {
  transform: translateY(-5px);
  border-color: var(--fg-secondary);
}
.swatch {
  height: 50px;
  width: 100%;
  border-radius: 8px;
  margin-bottom: 0.75rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  position: relative;
}
.swatch::after {
  content: 'COPY';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: #fff;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: 0.2s;
  border-radius: 8px;
}
.hex-card:hover .swatch::after { opacity: 1; }
.hex-name {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--fg-secondary);
  letter-spacing: 1px;
  margin-bottom: 0.25rem;
}
.hex-val {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--fg-primary);
  font-weight: 600;
}

/* ACTIONS */
.actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 3rem;
}
.btn {
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--syn-function), var(--syn-keyword));
  color: #fff;
  box-shadow: 0 5px 20px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px var(--accent-glow);
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--fg-primary);
}
.btn-outline:hover {
  border-color: var(--syn-keyword);
  color: var(--syn-keyword);
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-active);
  color: var(--syn-function);
  padding: 0.75rem 2rem;
  border-radius: 99px;
  font-weight: 600;
  box-shadow: 0 10px 30px var(--shadow);
  opacity: 0;
  transition: all 0.4s var(--ease-elastic);
  z-index: 100;
  border: 1px solid var(--border);
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}