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

:root {
  --color-bg: #212121;
  --color-surface: #2a2a2a;
  --color-border: #444444;
  --color-border-focus: #fb5d37;
  --color-text: #f0f0f0;
  --color-text-muted: #a0a0a0;
  --color-primary: #fb5d37;
  --color-primary-hover: #e04d2a;
  --color-error: #dc2626;
  --color-success: #059669;
  --radius: 6px;
  --font: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Bebas Neue", "Arial Narrow", sans-serif;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.form-container {
  max-width: 640px;
  margin: 2rem auto;
  padding: 0 1rem;
}

h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.subtitle {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.938rem;
}

/* Fieldsets */
fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem 1rem;
  margin-bottom: 1.25rem;
  background: var(--color-surface);
}

legend {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0 0.5rem;
  color: var(--color-text);
}

/* Rows & Fields */
.row {
  display: flex;
  gap: 1rem;
}

.field {
  flex: 1;
  margin-bottom: 0.875rem;
}

.field.full {
  width: 100%;
  margin-bottom: 0.875rem;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.req {
  color: var(--color-error);
}

.field-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.375rem;
}

/* Inputs */
input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.938rem;
  font-family: var(--font);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(251, 93, 55, 0.2);
}

input.invalid,
select.invalid {
  border-color: var(--color-error);
}

textarea {
  resize: vertical;
}

/* File inputs */
input[type="file"] {
  font-size: 0.875rem;
  padding: 0.375rem 0;
}

/* Radio group */
.radio-group {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.25rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-weight: 400;
  cursor: pointer;
}

.radio-label input[type="radio"] {
  width: auto;
  margin: 0;
}

/* Hidden utility */
.hidden {
  display: none !important;
}

/* Submit section */
.submit-section {
  text-align: center;
  margin-top: 0.5rem;
}

button[type="submit"] {
  display: inline-block;
  padding: 0.625rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font);
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s ease;
}

button[type="submit"]:hover {
  background: var(--color-primary-hover);
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  margin-top: 1rem;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* Status message */
.status-message {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  min-height: 1.25rem;
}

.status-message.error {
  color: var(--color-error);
}

.status-message.success {
  color: var(--color-success);
}

/* Responsive */
@media (max-width: 480px) {
  .row {
    flex-direction: column;
    gap: 0;
  }

  .form-container {
    padding: 0 0.75rem;
    margin: 1rem auto;
  }

  h1 {
    font-size: 1.625rem;
  }

  button[type="submit"] {
    width: 100%;
  }
}