:root {
  /* Core Backgrounds */
  --color-bg: #0e1117;
  --color-panel: #161b22;
  --color-panel-hover: #1c2128;
  --color-border: #30363d;

  /* Typography */
  --color-text: #c9d1d9;
  --color-text-muted: #8b949e;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Roboto Mono", Consolas, "Liberation Mono", Menlo, monospace;

  /* Trading Colors */
  --color-accent: #58a6ff;
  --color-success: #3fb950;   /* Bullish / Buy */
  --color-danger: #f85149;     /* Bearish / Sell */
  --color-warning: #d29922;   /* Warning / No Trade */
  --color-info: #58a6ff;

  /* Spacing & Layout */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --sidebar-width: 240px;
  --topbar-height: 48px;

  /* Strict: No rounded edges */
  --radius: 0; 
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.25; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }

/* Form Controls */
.form-control {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 6px 10px;
  font-size: 14px;
  font-family: var(--font-sans);
  border-radius: var(--radius);
  outline: none;
}
.form-control:focus { border-color: var(--color-accent); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color 0.1s ease;
}
.btn-primary { background-color: var(--color-accent); color: #fff; }
.btn-primary:hover { background-color: #4c96e0; }
.btn-danger { background-color: var(--color-danger); color: #fff; }
.btn-secondary { background-color: var(--color-panel-hover); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background-color: #2d333b; }