:root {
  --color-background: #f3f5f9;
  --color-card: #ffffff;
  --color-primary: #004aad;
  --color-primary-dark: #00357d;
  --color-text: #1f2933;
  --color-muted: #5f6c7b;
  --color-border: #d0d7e2;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont,
    'Helvetica Neue', sans-serif;
}

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

body {
  margin: 0;
  background: radial-gradient(circle at top, #eff6ff 0%, #f8fafc 60%, #f1f5f9 100%);
  color: var(--color-text);
  min-height: 100vh;
}

.page-wrapper {
  margin: 0 auto;
  max-width: 960px;
  padding: 48px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.hero__logo {
  width: 160px;
  height: auto;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  max-width: 640px;
  color: var(--color-muted);
  line-height: 1.6;
}

.form-card {
  background: var(--color-card);
  border-radius: 18px;
  padding: clamp(24px, 4vw, 48px);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(0, 74, 173, 0.08);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-card h2 {
  margin: 0;
  font-size: 1.5rem;
}

.screenshot-gallery {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 18px;
  padding: clamp(24px, 4vw, 40px);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(0, 74, 173, 0.05);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.screenshot-gallery h2 {
  margin: 0;
  font-size: 1.7rem;
}

.screenshot-gallery__intro {
  margin: 0;
  max-width: 680px;
  color: var(--color-muted);
  line-height: 1.6;
}

.screenshot-gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.screenshot-card {
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), #ffffff);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.screenshot-card img {
  display: block;
  width: 100%;
  height: auto;
}

.screenshot-card video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
  outline: none;
  border: none;
  border-radius: 0;
}

.screenshot-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.12);
}

form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form--disabled {
  opacity: 0.6;
  pointer-events: none;
}

.fieldset {
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fieldset legend {
  font-weight: 600;
  padding: 0 8px;
}

.fieldset__hint {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field span {
  font-weight: 500;
}

.field input,
.field select,
.field textarea {
  border-radius: 10px;
  border: 1px solid var(--color-border);
  font: inherit;
  padding: 12px 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 74, 173, 0.2);
}

.field--inline {
  margin-left: 36px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.checkbox input {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
}

.checkbox--other {
  margin-right: 12px;
}

.privacy {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.6;
}

.button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--color-primary), #2e7ff8);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 12px 18px rgba(0, 74, 173, 0.24);
}

.button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.form-messages {
  min-height: 24px;
  font-weight: 500;
}

.form-messages--success {
  color: #037947;
}

.form-messages--error {
  color: #c53030;
}

.form-messages--info {
  color: var(--color-muted);
}

.footer {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.footer a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

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

.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;
}

@media (max-width: 640px) {
  .fieldset {
    padding: 20px;
  }

  .field--inline {
    margin-left: 0;
    width: 100%;
  }

  .checkbox-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .screenshot-gallery__grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}