/* assets/core.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
  /* Default Theme (Dark) Variables */
  --bg-main: #121212;
  --bg-surface: #1E1E1E;
  --bg-elevated: #2D2D2D;
  --text-primary: #FFFFFF;
  --text-secondary: #B3B3B3;
  --accent-primary: #BB86FC;
  --accent-secondary: #03DAC6;
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(30, 30, 30, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.5);
  
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Light Theme */
.theme-light {
  --bg-main: #F8F9FA;
  --bg-surface: #FFFFFF;
  --bg-elevated: #F1F3F5;
  --text-primary: #212529;
  --text-secondary: #495057;
  --accent-primary: #0056D2;
  --accent-secondary: #E83E8C;
  --border-color: rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(0, 0, 0, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Solarized Theme */
.theme-solarized {
  --bg-main: #002b36;
  --bg-surface: #073642;
  --bg-elevated: #586e75;
  --text-primary: #839496;
  --text-secondary: #93a1a1;
  --accent-primary: #2aa198; /* cyan */
  --accent-secondary: #b58900; /* yellow */
  --border-color: #586e75;
  --glass-bg: rgba(7, 54, 66, 0.8);
  --glass-border: #586e75;
  --shadow-color: rgba(0, 0, 0, 0.4);
}

/* Neon Glow Theme */
.theme-neon {
  --bg-main: #000000;
  --bg-surface: #0a0a0a;
  --bg-elevated: #1a1a1a;
  --text-primary: #FFFFFF;
  --text-secondary: #cccccc;
  --accent-primary: #FF00FF;
  --accent-secondary: #39FF14;
  --border-color: #FF00FF;
  --glass-bg: rgba(10, 10, 10, 0.9);
  --glass-border: #FF00FF;
  --shadow-color: #FF00FF;
  --font-sans: 'JetBrains Mono', monospace;
}

/* High-Contrast Theme */
.theme-highcontrast {
  --bg-main: #000000;
  --bg-surface: #000000;
  --bg-elevated: #000000;
  --text-primary: #FFFFFF;
  --text-secondary: #FFFF00;
  --accent-primary: #FFFF00;
  --accent-secondary: #FFFFFF;
  --border-color: #FFFFFF;
  --glass-bg: #000000;
  --glass-border: #FFFFFF;
  --shadow-color: transparent;
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;
  --radius-xl: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
}

p {
  margin-bottom: 1rem;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.main-content {
  flex: 1;
  padding: 4rem 0;
  position: relative;
  z-index: 10;
}

/* Header */
.global-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 100;
  padding: 1rem 0;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--accent-primary);
}

.header-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Forms & Inputs */
input, select, textarea, button {
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

input, select, textarea {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(187, 134, 252, 0.2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  font-weight: 500;
}

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

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--bg-main);
  border-color: var(--accent-primary);
}

.theme-light .btn-primary { color: #fff; }

.btn-primary:hover {
  background-color: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

/* Glass Panels */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 8px 32px var(--shadow-color);
}

/* Tool Grid (for index.html) */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.tool-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  height: 100%;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: var(--text-primary);
  z-index: 1;
}

.tool-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px var(--shadow-color);
  border-color: var(--accent-primary);
}
.theme-neon .tool-card:hover { box-shadow: 0 0 20px var(--accent-primary); }

.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
}

.tool-title {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.tool-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  flex: 1;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
  z-index: -1;
  pointer-events: none;
}

/* Tool Page Specific */
.tool-header {
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 1rem;
}

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

.tool-canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none; /* Let clicks pass through to UI */
  opacity: 0.6;
}

/* Footer */
.global-footer {
  margin-top: auto;
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
  background-color: var(--bg-surface);
  position: relative;
  z-index: 10;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 1000;
}

.toast {
  background: var(--bg-elevated);
  color: var(--text-primary);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-primary);
  box-shadow: 0 4px 12px var(--shadow-color);
  animation: slideIn 0.3s ease forwards;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toast.error { border-left-color: #ff4444; }
.theme-neon .toast.error { border-left-color: #ff0000; box-shadow: 0 0 10px #ff0000; }
.theme-neon .toast { box-shadow: 0 0 10px var(--accent-primary); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

/* Utilities */
.text-accent { color: var(--accent-primary); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 2rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }