:root {
  --color-background-primary:   #ffffff;
  --color-background-secondary: #f7f4ef;
  --color-background-tertiary:  #f0ece4;
  --color-background-danger:    #fdf2f2;

  --color-text-primary:         #1a1714;
  --color-text-secondary:       #6b6560;
  --color-text-danger:          #c0392b;

  --color-border-primary:       #8a7f75;
  --color-border-secondary:     #b8b0a6;
  --color-border-tertiary:      #ddd8d0;
  --color-border-danger:        #e8b4b0;

  --color-accent:               #c96a2e;
}

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

body {
  font-family: 'Calibri', 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  background-color: var(--color-background-tertiary, #f5f5f0);
  color: var(--color-text-primary);
  padding: 48px 16px 80px;
  min-height: 100vh;
}

.page {
  max-width: 580px;
  margin: 0 auto;
}

/* ── Header ── */
.header {
  text-align: center;
  margin-bottom: 28px;
}

.header-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.header h1 {
  font-size: 22px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.header p {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 460px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Card ── */
.card {
  background: var(--color-background-primary);
  border: 0.5px solid var(--color-border-tertiary);
  border-radius: 12px;
  padding: 24px 28px;
}

/* ── Section labels ── */
.section-label {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

.divider {
  border: none;
  border-top: 0.5px solid var(--color-border-tertiary);
  margin: 20px 0;
}

/* ── Fields ── */
.field {
  margin-bottom: 18px;
}

.field-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.field-label svg {
  flex-shrink: 0;
}

.optional {
  font-size: 11px;
  opacity: 0.7;
}

.field-hint {
  font-size: 12px;
  color: var(--color-text-secondary);
  opacity: 0.8;
  margin-top: 5px;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 0.5px solid var(--color-border-tertiary);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

input[type="text"]:hover,
input[type="email"]:hover,
textarea:hover {
  border-color: var(--color-border-secondary);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-color: var(--color-border-primary);
  box-shadow: 0 0 0 2px var(--color-border-tertiary);
}

textarea {
  resize: vertical;
  min-height: 88px;
}

/* ── Checkbox ── */
.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-bottom: 20px;
  cursor: pointer;
}

.checkbox-row input[type="checkbox"] {
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-row span {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── Error ── */
.error-box {
  display: none;
  background: var(--color-background-danger);
  border: 0.5px solid var(--color-border-danger);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-text-danger);
  margin-bottom: 16px;
}

.error-box.visible {
  display: block;
}

/* ── Button ── */
.btn {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  background: var(--color-text-primary);
  color: var(--color-background-primary);
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: opacity 0.15s;
}

.btn:hover { opacity: 0.88; }
.btn:active { opacity: 0.75; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.spinner {
  display: none;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(128,128,128,0.3);
  border-top-color: var(--color-background-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn.loading .spinner { display: block; }

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

@media (max-width: 480px) {
  body { padding: 32px 12px 60px; }
  .card { padding: 20px 18px; }
}