* { box-sizing: border-box; }

:root {
  --dk-primary: #0095DB;
  --dk-primary-dark: #00729f;
  --dk-accent: #FBBD48;
  --dk-secondary: #575756;
  --dk-text: #333333;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f4f7f9;
  font-family: "Open Sans", system-ui, -apple-system, sans-serif;
  color: var(--dk-text);
  padding: 2rem 1rem;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 2.2rem 2rem;
  max-width: 440px;
  width: 100%;
  box-shadow: 6px 6px 0 rgba(0, 91, 130, 0.12);
  border: 1px solid #dce6ea;
  border-top: 5px solid var(--dk-primary);
}

.logo {
  display: block;
  height: 32px;
  width: auto;
  margin-bottom: 1.4rem;
}

h1 {
  margin: 0 0 0.3rem;
  font-family: "Roboto Slab", serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--dk-primary-dark);
}

.event-info {
  margin: 0 0 1rem;
  padding: 0.5rem 0.8rem;
  background: #eaf6fc;
  border-left: 3px solid var(--dk-primary);
  border-radius: 4px;
  color: var(--dk-primary-dark);
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1.4;
}

.intro {
  margin: 0 0 1.5rem;
  color: var(--dk-secondary);
  font-size: 0.95rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dk-text);
}

.optional {
  font-weight: 400;
  color: #8d9598;
}

input[type="text"],
input[type="email"],
select {
  font: inherit;
  padding: 0.6rem 0.7rem;
  border: 1px solid #c7d2d8;
  border-radius: 6px;
  background: #fbfcfd;
  color: var(--dk-text);
}

select:invalid {
  color: #8d9598;
}

input[type="text"]:focus,
input[type="email"]:focus,
select:focus {
  outline: 2px solid var(--dk-primary);
  outline-offset: 1px;
}

button {
  font: inherit;
  font-weight: 700;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 6px;
  background: var(--dk-primary);
  color: #fff;
  cursor: pointer;
  box-shadow: 3px 3px 0 rgba(0, 91, 130, 0.25);
}

button:hover {
  background: var(--dk-primary-dark);
}

button:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 rgba(0, 91, 130, 0.25);
}

button:disabled {
  background: #9fc9de;
  cursor: default;
  box-shadow: none;
}

.message {
  margin-top: 1.2rem;
  padding: 0.7rem 0.9rem;
  border-radius: 6px;
  font-size: 0.9rem;
}

.message.ok {
  background: #e6f3fa;
  color: #004e6e;
  border: 1px solid #a9d7ec;
}

.message.error {
  background: #fdece0;
  color: #7a3400;
  border: 1px solid #f3c79a;
}