/* ── Global Theme & Base Variables ── */
:root {
  --bg: #15130F; 
  --panel: #1E1B15; 
  --panel2: #262219; 
  --line: #34301F;
  --amber: #FFB000; 
  --amber-dim: #9c6f00; 
  --phosphor: #00E6A8;
  --cream: #F2EDE4; 
  --muted: #9C9282; 
  --danger: #FF6B5C; 
  --r: 14px;
  --shadow: 0 20px 40px rgba(0,0,0,.45);
}

[data-theme="light"] {
  --bg: #F5F0E8; 
  --panel: #FFFFFF; 
  --panel2: #F0EBE0; 
  --line: #E0D8C8;
  --cream: #1A1410; 
  --muted: #6B5E50; 
  --shadow: 0 8px 24px rgba(0,0,0,.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(circle at 10% 0%, rgba(255,176,0,.07), transparent 45%),
    radial-gradient(circle at 90% 15%, rgba(0,230,168,.05), transparent 40%),
    var(--bg);
  color: var(--cream); 
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100vh; 
  display: flex; 
  flex-direction: column; 
  align-items: center;
  -webkit-font-smoothing: antialiased;
}

[data-theme="light"] body {
  background:
    radial-gradient(circle at 10% 0%, rgba(255,176,0,.10), transparent 45%),
    radial-gradient(circle at 90% 15%, rgba(0,230,168,.07), transparent 40%),
    var(--bg);
}

::selection { background: var(--amber); color: #15130F; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

.mono { font-family: 'JetBrains Mono', monospace; } 
.display { font-family: 'Space Grotesk', sans-serif; }

.btn {
  background: var(--amber);
  color: #1a1304;
  border: none;
  border-radius: 9px;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: .2s;
  font-family: 'Inter', sans-serif;
}
.btn:hover {
  background: #ffc23d;
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Base header styles common to multiple pages */
header {
  width: 100%; padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.02), transparent);
  position: sticky; top: 0; z-index: 100; backdrop-filter: blur(12px);
}
.logo { display: flex; align-items: center; gap: 10px; }
header h1 { font-size: 18px; letter-spacing: .04em; }
header h1 .tik { color: var(--muted); font-weight: 500; }
header h1 .deck { color: var(--amber); }

/* Common actions and layout */
.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  background: var(--panel2); border: 1px solid var(--line); color: var(--muted);
  border-radius: 9px; padding: 8px 12px; font-size: 13px; cursor: pointer;
  transition: .2s; white-space: nowrap;
}
.icon-btn:hover { color: var(--cream); border-color: var(--amber-dim); }

main { width: 100%; max-width: 740px; padding: 40px 20px 80px; flex: 1; }