:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --border: #d9e0e7;
  --text: #1f2937;
  --text-soft: #5b6573;
  --accent: #e4005a;
  --accent-hover: #c80050;
  --error: #c62828;
  --success: #1b8f3a;
  --shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  margin: 0;
  color: var(--text);
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.header {
  text-align: center;
  margin-bottom: 28px;
}

.logo {
  max-width: 220px;
  margin: 0 auto 12px;
  display: block;
}

h1 {
  margin: 10px 0 8px;
  font-size: 2rem;
}

.header p {
  color: var(--text-soft);
  margin: 0;
}

form {
  background: var(--surface);
  padding: 28px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

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

input,
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #cfd6df;
  font-size: 1rem;
  background: #fff;
  color: var(--text);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(228, 0, 90, 0.08);
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.error {
  display: block;
  margin-top: 6px;
  color: var(--error);
  font-size: 0.88rem;
  min-height: 1em;
}

.input-error {
  border-color: var(--error) !important;
}

.btn {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s ease, opacity 0.2s ease;
}

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

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

.msg {
  text-align: center;
  margin-top: 16px;
  font-weight: 700;
  min-height: 1.2em;
}

.msg.success {
  color: var(--success);
}

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

.back {
  display: block;
  margin-top: 22px;
  text-align: center;
  color: var(--text-soft);
  text-decoration: none;
}

.back:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .container {
    padding: 16px 14px 28px;
  }

  form {
    padding: 20px;
  }

  h1 {
    font-size: 1.7rem;
  }
}