:root {
  --color-orange: #F57C48;
  --color-orange-soft: #F7B982;
  --color-gray: #C9C2B5;
  --color-offwhite: #F7F6EF;
  --color-lead: #3E3C34;
  --color-black: #141411;

  --font-heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-black);
  color: var(--color-offwhite);
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
}

/* Header */

.site-header {
  padding: 24px 0;
  background: var(--color-black);
  border-bottom: 1px solid rgba(201, 194, 181, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  display: block;
  height: 28px;
  width: auto;
}

/* Hero */

.hero {
  background: linear-gradient(180deg, var(--color-orange) 0%, var(--color-orange-soft) 55%, var(--color-offwhite) 100%);
  padding: 72px 0 88px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(44px, 12vw, 76px);
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--color-black);
  line-height: 1.02;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(18px, 5vw, 26px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-lead);
  margin: 16px 0 0;
}

.hero-date {
  font-family: var(--font-heading);
  display: inline-block;
  margin-top: 28px;
  padding: 10px 24px;
  font-weight: 700;
  font-size: clamp(16px, 4vw, 20px);
  letter-spacing: 0.08em;
  background: var(--color-black);
  color: var(--color-offwhite);
  border-radius: 999px;
}

.hero-support {
  margin-top: 28px;
  font-size: 16px;
  color: var(--color-lead);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
  padding: 16px 32px;
  border: 2px solid var(--color-black);
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 15px;
  text-decoration: none;
  color: var(--color-black);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.hero-cta:hover,
.hero-cta:focus-visible {
  background: var(--color-black);
  color: var(--color-offwhite);
}

.hero-cta .arrow {
  font-size: 18px;
}

/* Form section */

.form-section {
  background: var(--color-offwhite);
  color: var(--color-black);
  padding: 64px 0 80px;
}

.form-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 7vw, 38px);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-align: center;
  margin: 0 0 40px;
  color: var(--color-black);
}

.field {
  margin-bottom: 24px;
  border: none;
  padding: 0;
}

.field label,
.field legend {
  display: block;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
  color: var(--color-lead);
  padding: 0;
}

.required {
  color: var(--color-orange);
}

input[type="text"],
input[type="tel"] {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 16px;
  border: 2px solid var(--color-gray);
  border-radius: 10px;
  background: #fff;
  color: var(--color-black);
  transition: border-color 0.2s ease;
}

input[type="text"]:focus,
input[type="tel"]:focus {
  outline: none;
  border-color: var(--color-orange);
}

input.invalid {
  border-color: #d64545;
}

.profile-other-input {
  margin-top: 12px;
}

.hidden {
  display: none !important;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 2px solid var(--color-gray);
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.radio-option:has(input:checked) {
  border-color: var(--color-orange);
  background: rgba(245, 124, 72, 0.08);
}

.radio-option input {
  accent-color: var(--color-orange);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.error-msg {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: #c0392b;
  font-weight: 600;
  min-height: 16px;
}

.submit-btn {
  width: 100%;
  padding: 18px;
  margin-top: 16px;
  border: none;
  border-radius: 999px;
  background: var(--color-orange);
  color: var(--color-black);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.submit-btn:hover {
  background: var(--color-orange-soft);
}

.submit-btn:active {
  transform: scale(0.98);
}

.submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-spinner {
  width: 18px;
  height: 18px;
  border: 3px solid rgba(20, 20, 17, 0.3);
  border-top-color: var(--color-black);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-status-error {
  margin-top: 16px;
  text-align: center;
  font-weight: 700;
  color: #c0392b;
}

.success-message {
  text-align: center;
  padding: 40px 24px;
  background: #fff;
  border: 2px solid var(--color-orange);
  border-radius: 16px;
}

.success-message h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  color: var(--color-black);
  margin: 0 0 12px;
}

.success-message p {
  color: var(--color-lead);
  margin: 0;
}

/* Footer */

.site-footer {
  background: var(--color-black);
  padding: 40px 0;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-gray);
  max-width: 380px;
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 20px;
  margin-top: 4px;
}

.footer-links a {
  font-size: 13px;
  color: var(--color-orange);
  text-decoration: none;
  font-weight: 600;
}

.footer-links a:hover {
  text-decoration: underline;
}

/* Tablet / desktop refinements */

@media (min-width: 640px) {
  .radio-group {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .radio-option {
    flex: 1 1 calc(50% - 5px);
  }
}

@media (min-width: 900px) {
  .container {
    max-width: 720px;
  }

  .hero {
    padding: 100px 0 120px;
  }
}