/* === Shared Design System === */
:root {
  --bg-deep: #07071a;
  --bg-card: #10102a;
  --bg-input: #161638;
  --text-primary: #eeeaf5;
  --text-secondary: #c4c0d4;
  --text-muted: #9692a8;
  --text-strong: #ffffff;
  --accent: #d4b44a;
  --accent-glow: rgba(212, 180, 74, 0.1);
  --warm: #e89565;
  --cool: #7ab8e0;
  --border: #2a2a44;
  --radius: 14px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px; margin:0 auto; padding:0 24px;
  position: relative; z-index:1;
}

a { color: var(--text-secondary); text-decoration: none; }
a:hover { color: var(--accent); }

/* === Form Elements === */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 13px; color: var(--text-secondary);
  margin-bottom: 8px; font-weight: 500;
}
.form-group textarea, .form-group input[type="number"] {
  width: 100%; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-family: var(--font); padding: 14px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group textarea:focus, .form-group input[type="number"]:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,180,74,0.08);
}
.form-group textarea {
  min-height: 120px; resize: vertical;
}
.form-group textarea {
  font-size: 15px; resize: vertical; min-height: 80px; line-height: 1.6;
}
.form-group input[type="number"] {
  font-size: 18px; text-align: center; padding: 12px 14px;
}
.form-group textarea:focus, .form-group input:focus {
  outline: none; border-color: var(--accent);
}
.form-group textarea::placeholder, .form-group input::placeholder {
  color: var(--text-muted);
}

.numbers-row {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px;
}
.number-label {
  grid-column: 1 / -1;
  font-size: 13px; color: var(--text-secondary); font-weight: 500;
  margin-bottom: 4px;
}

.btn-primary {
  background: var(--accent); color: var(--bg-deep); border: none;
  border-radius: var(--radius-sm); padding: 16px 36px;
  font-family: var(--font); font-size: 16px; font-weight: 500;
  cursor: pointer; transition: all 0.2s; letter-spacing: 2px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }

.btn-secondary {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 20px;
  color: var(--text-secondary); font-size: 14px; cursor: pointer;
  font-family: var(--font); text-align: center; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,180,74,0.05); }

.btn-sm {
  background: rgba(255,255,255,0.04); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  font-size: 12px; padding: 7px 14px; cursor: pointer;
  font-family: var(--font); transition: all 0.2s;
}
.btn-sm:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,180,74,0.06); }

.error-msg {
  background: rgba(220,120,120,0.1); border: 1px solid rgba(220,120,120,0.2);
  border-radius: var(--radius-sm); padding: 12px 18px; margin-bottom: 20px;
  font-size: 13px; color: #dc7878;
}

@media (max-width: 640px) {
  .numbers-row { grid-template-columns: 1fr 1fr 1fr; }
  .container { padding: 0 16px; }
}

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}