/* ==============================
   THEME VARIABLES
   ============================== */

:root {
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;

  --topbar-bg: #ffffff;
  --topbar-border: #66cc33;

  --primary: #00a8f3;
  --accent: #66cc33;

  --code-bg: #0f172a;
  --code-text: #d1d5db;
}

/* Dark mode override */
html[data-theme="dark"] {
  --bg: #0b1220;
  --bg-card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;

  --topbar-bg: #020617;
  --topbar-border: #66cc33;

  --primary: #38bdf8;
  --accent: #84cc16;

  --code-bg: #020617;
  --code-text: #e5e7eb;
}

/* Auto dark mode if not explicitly set */
@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    --bg: #0b1220;
    --bg-card: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;

    --topbar-bg: #020617;
    --topbar-border: #66cc33;

    --primary: #38bdf8;
    --accent: #84cc16;

    --code-bg: #020617;
    --code-text: #e5e7eb;
  }
}

/* ==============================
   BASE
   ============================== */

* {
  box-sizing: border-box;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

/* ==============================
   TOP BAR
   ============================== */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--topbar-bg);
  padding: 12px 24px;
  border-bottom: 4px solid var(--topbar-border);
}

.topbar img {
  height: 50px;
}

.topbar .right {
  display: flex;
  gap: 16px;
  align-items: center;
}

.topbar a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

/* ==============================
   CONTENT
   ============================== */

.container {
  padding: 40px;
}

.card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 28px;
  max-width: 900px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* ==============================
   BUTTONS
   ============================== */

.button {
  display: inline-block;
  padding: 12px 24px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  color: white;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
}

/* ==============================
   CODE
   ============================== */

pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
}

/* ==============================
   TOGGLE
   ============================== */

.theme-toggle {
  cursor: pointer;
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text);
}