:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --border: #2e3348;
  --accent: #4f6ef7;
  --accent-hover: #6b85ff;
  --danger: #e05252;
  --success: #3ecf8e;
  --text: #e8eaf6;
  --text-muted: #8891b4;
  --text-dim: #4a5070;
  --spade: #4f6ef7;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,.45);
  --transition: .18s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border: none; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all var(--transition); text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: .85; }
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none !important; }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }

/* ── Forms ── */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.field input, .field textarea, .field select {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 14px;
  color: var(--text); font-size: 14px; outline: none;
  transition: border-color var(--transition);
  width: 100%;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--accent);
}
.field input::placeholder { color: var(--text-dim); }

/* ── Error / Toast ── */
.error-msg { color: var(--danger); font-size: 13px; padding: 8px 12px; background: rgba(224,82,82,.1); border-radius: var(--radius-sm); border: 1px solid rgba(224,82,82,.25); display: none; }
.error-msg.show { display: block; }

#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 20px; font-size: 13px; font-weight: 500; color: var(--text);
  box-shadow: var(--shadow); z-index: 9999; transition: transform .3s ease;
  white-space: nowrap;
}
#toast.show { transform: translateX(-50%) translateY(0); }
#toast.success { border-color: var(--success); color: var(--success); }
#toast.error { border-color: var(--danger); color: var(--danger); }

/* ── Modal overlay ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
  padding: 20px;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; width: 100%; max-width: 420px;
  box-shadow: var(--shadow);
  transform: scale(.95); transition: transform var(--transition);
}
.modal-overlay.open .modal { transform: scale(1); }
.modal-title { font-size: 16px; font-weight: 700; margin-bottom: 20px; color: var(--text); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }