:root {
  /* Brand Colors */
  --brand-primary: #0f172a; /* Dark slate */
  --brand-accent: #3b82f6; /* Modern Blue */
  --brand-accent-hover: #2563eb;
  
  /* Backgrounds */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f1f5f9;
  
  /* Text */
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-inverse: #ffffff;
  
  /* Borders & Shadows */
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Status Colors */
  --status-open: #f59e0b; /* Amber */
  --status-open-bg: #fef3c7;
  --status-resolved: #10b981; /* Emerald */
  --status-resolved-bg: #d1fae5;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --transition-speed: 0.2s;
}

/* Dark Mode Tokens (Using a data attribute or media query) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-main: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --brand-primary: #ffffff;
  }
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: var(--brand-accent);
  transition: color var(--transition-speed);
}
a:hover {
  color: var(--brand-accent-hover);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}

.btn-primary {
  background-color: var(--brand-accent);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

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

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--bg-surface-hover);
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}
.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  transition: border-color var(--transition-speed);
}
.form-input:focus {
  outline: none;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Cards */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

/* Marketing Hero */
.hero-section {
  padding: 6rem 0;
  text-align: center;
}
.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, var(--text-primary), var(--brand-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}