:root {
  --primary: #1DA1F2;
  --primary-dark: #0d8bdc;
  --secondary: #FFA500;
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #102a43;
  --muted: #627d98;
  --border: #e5eaf0;
  --error: #ef4444;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Tajawal", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.rtl {
  font-family: "Tajawal", "Inter", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, sans-serif;
}

/* Brand gradient bar */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 10;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 16px 60px;
}

.header { text-align: center; margin-bottom: 24px; }

.lang-toggle {
  display: inline-flex;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 18px;
  box-shadow: 0 1px 2px rgba(16, 42, 67, 0.06);
}

.lang-toggle button {
  border: none;
  background: transparent;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  font-family: inherit;
}

.lang-toggle button.active {
  background: var(--primary);
  color: #fff;
}

h1 {
  font-size: 25px;
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--text);
}

.header p { margin: 0; color: var(--muted); font-size: 15px; }

#form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  box-shadow: 0 4px 16px rgba(16, 42, 67, 0.06);
}

.field { margin-bottom: 22px; }

.field-label {
  display: block;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 8px;
}

.req-star { color: var(--secondary); font-weight: 800; }

.field-desc {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--muted);
}

input[type="text"],
input[type="tel"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 161, 242, 0.14);
}

textarea { resize: vertical; min-height: 90px; }

.checkbox-group, .radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.checkbox-option, .radio-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 9px;
  cursor: pointer;
  font-size: 14px;
  background: #fff;
  transition: border-color 0.15s, background 0.15s;
  user-select: none;
}

.checkbox-option:hover, .radio-option:hover { border-color: var(--primary); }

.checkbox-option:has(input:checked), .radio-option:has(input:checked) {
  border-color: var(--primary);
  background: rgba(29, 161, 242, 0.07);
}

.checkbox-option input:disabled ~ span { opacity: 0.4; }
.checkbox-option:has(input:disabled) { opacity: 0.6; cursor: not-allowed; }

.checkbox-option input, .radio-option input { accent-color: var(--primary); }

.field-error {
  color: var(--error);
  font-size: 13px;
  margin-top: 6px;
  min-height: 18px;
}

.submit-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: filter 0.15s, transform 0.05s;
}

.submit-btn:hover { filter: brightness(1.05); }
.submit-btn:active { transform: translateY(1px); }
.submit-btn:disabled { opacity: 0.6; cursor: default; }

.success {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px 24px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(16, 42, 67, 0.06);
}

.success-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--secondary);
  color: #fff;
  font-size: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.success h2 { margin: 0 0 8px; font-size: 21px; font-weight: 800; }
.success p { margin: 0; color: var(--muted); }

.hidden { display: none; }

@media (max-width: 480px) {
  h1 { font-size: 21px; }
  #form { padding: 22px 16px; }
}