:root {
  --bg: #123a6b;
  --panel: #ffffff;
  --panel-alt: #f4f5f7;
  --text: #1a1c20;
  --text-muted: #5b616e;
  --accent: #5fa82a;
  --accent-dark: #4a8a1f;
  --accent-blue: #1e4fa0;
  --border: #dfe2e7;
  --success: #3f9142;
  --error: #d8471f;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.app-header {
  position: relative;
  background: var(--bg);
  color: #fff;
  padding: 20px clamp(16px, 4vw, 48px);
  text-align: center;
  flex: 0 0 auto;
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: 0.02em;
}

.app-header .subtitle {
  margin: 4px 0 0;
  color: #c9cdd6;
  font-size: clamp(0.85rem, 1.8vw, 1.05rem);
}

.fullscreen-btn {
  position: absolute;
  top: 16px;
  right: clamp(12px, 3vw, 32px);
  background: transparent;
  border: 1px solid #3f5f96;
  color: #c9d6ec;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}

.fullscreen-btn:hover {
  border-color: var(--accent);
  color: #fff;
}

.form-view {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
}

.form-view[hidden] {
  display: none;
}

.waiver-text {
  background: var(--panel-alt);
  padding: clamp(16px, 3vw, 32px);
  margin: clamp(16px, 3vw, 32px) clamp(16px, 3vw, 48px) clamp(24px, 4vw, 40px);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.waiver-text .meta {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.waiver-text article {
  margin-bottom: 18px;
}

.waiver-text h2 {
  font-size: 1rem;
  margin: 0 0 6px;
  color: var(--text);
}

.waiver-text p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.waiver-form {
  background: var(--panel);
  padding: 20px clamp(16px, 3vw, 48px) clamp(24px, 4vw, 48px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.waiver-form[hidden] {
  display: none;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.field input {
  font: inherit;
  font-weight: 400;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
}

.field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.scroll-hint {
  margin: 14px clamp(16px, 3vw, 48px) 0;
  padding: 12px 16px;
  border-radius: 10px;
  background: #eef8e6;
  border: 1px solid #c7e8ae;
  color: var(--accent-dark);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
}

.scroll-hint[hidden] {
  display: none;
}

.agree-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text);
  cursor: pointer;
}

.agree-row input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex: 0 0 auto;
  accent-color: var(--accent-blue);
}

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

.signature-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.9rem;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent-dark);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 6px;
}

.signature-pad {
  width: 100%;
  height: 180px;
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: var(--panel-alt);
  touch-action: none;
  cursor: crosshair;
}

.form-error {
  color: var(--error);
  font-size: 0.9rem;
  margin: 0;
}

.submit-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 16px;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease;
}

.submit-btn:hover {
  background: var(--accent-dark);
}

.submit-btn:disabled {
  background: #b9bcc3;
  cursor: not-allowed;
}

.success-view {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
  padding: 24px;
}

.success-view[hidden] {
  display: none;
}

.success-card {
  text-align: center;
  max-width: 420px;
}

.success-icon {
  width: 72px;
  height: 72px;
  line-height: 72px;
  border-radius: 50%;
  background: var(--success);
  color: #fff;
  font-size: 2rem;
  margin: 0 auto 16px;
}

.success-card h2 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.success-card p {
  color: var(--text-muted);
  margin: 0 0 24px;
}

.auto-reset-note {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .field-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .fullscreen-btn {
    display: none;
  }
}