/* Reset and base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: #0f172a;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
}
:root {
  --primary: #4f46e5;
  --primary-600: #4f46e5;
  --primary-700: #4338ca;
  --surface: #ffffff;
  --muted: #64748b;
  --ring: rgba(79, 70, 229, 0.3);
  --shadow: 0 10px 30px rgba(2,6,23,0.08);
}

/* Header */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(16px, 4vw, 32px);
  backdrop-filter: blur(6px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 24px; color: var(--primary-600); }
.site-header h1 { font-size: 20px; margin: 0; }
.controls { display: flex; align-items: center; gap: 8px; }
select#lang {
  appearance: none; border: 1px solid #e2e8f0; border-radius: 10px;
  padding: 8px 28px 8px 12px; background: var(--surface);
}

/* Layout */
.container { max-width: 980px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 32px) 48px; }
.card {
  background: var(--surface);
  border-radius: 18px; box-shadow: var(--shadow);
  padding: clamp(16px, 3.5vw, 28px);
}

/* Type switch */
.type-switch { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 16px; }
.type-btn {
  border: 1px solid #e2e8f0; background: #f8fafc; color: #0f172a;
  padding: 10px 12px; border-radius: 10px; cursor: pointer; font-weight: 600;
}
.type-btn.active, .type-btn:focus-visible {
  outline: none; border-color: var(--primary-600); box-shadow: 0 0 0 3px var(--ring);
  background: #eef2ff; color: var(--primary-700);
}

/* Form */
.form { display: grid; gap: 14px; }
.field label { display: block; margin-bottom: 6px; font-weight: 600; }
.field input {
  width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid #e2e8f0;
  background: #fff; outline: none; font-size: 16px;
}
.field input:focus { border-color: var(--primary-600); box-shadow: 0 0 0 3px var(--ring); }
.hint { color: var(--muted); font-size: 13px; margin: 6px 2px 0; }
.hidden { display: none !important; }

.actions { display: flex; gap: 10px; margin-top: 6px; flex-wrap: wrap; }
button { cursor: pointer; border-radius: 12px; border: 1px solid #e2e8f0; padding: 10px 14px; background: #fff; }
button.primary { background: var(--primary-600); color: #fff; border-color: var(--primary-600); }
button.primary:hover { background: var(--primary-700); border-color: var(--primary-700); }
button.ghost { background: transparent; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

/* Appearance (colors) */
.appearance { display: flex; gap: 12px; margin-top: 8px; flex-wrap: wrap; align-items: center; }
.color-field { display: inline-flex; align-items: center; gap: 8px; background: #f8fafc; border: 1px solid #e2e8f0; padding: 6px 10px; border-radius: 10px; }
.color-field label { font-weight: 600; color: #0f172a; }
.color-field input[type="color"] { width: 40px; height: 32px; padding: 0; border: none; background: transparent; cursor: pointer; border-radius: 6px; }

/* Preview */
.preview { display: grid; gap: 12px; margin-top: 16px; align-items: start; }
.qrcode {
  display: grid; place-items: center; width: 100%; min-height: 256px;
  border: 1px dashed #e2e8f0; border-radius: 14px; background: #fafafa;
}
.preview-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.privacy { color: var(--muted); margin-top: 8px; font-size: 14px; }

/* Footer */
.site-footer { text-align: center; padding: 24px clamp(16px, 4vw, 32px); color: #334155; }
.site-footer p { margin: 8px 0; }
.social { display: inline-flex; align-items: center; gap: 10px; }
.social a { color: var(--primary-700); text-decoration: none; }
.social a:hover { text-decoration: underline; }
.social img { width: 22px; height: 22px; display: inline-block; vertical-align: middle; }
.icon-link { display: inline-flex; align-items: center; justify-content: center; }

/* Responsive */
@media (min-width: 880px) {
  .container { padding-bottom: 64px; }
  .card { padding: 28px 32px; }
  .form { grid-template-columns: 1fr; }
}

/* RTL tweaks */
[dir="rtl"] .site-header h1 { letter-spacing: .1px; }
[dir="rtl"] .type-switch { direction: rtl; }