/*
  Cores principais: #14b8a6 (verde-água), #0d9488 (verde-escuro), #f5f7fa (cinza claro), #c3cfe2 (azul claro), #374151 (cinza escuro)
*/

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(20, 184, 166, 0.10), 0 1.5px 8px rgba(13, 148, 136, 0.08);
    padding: 40px 32px 32px 32px;
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

h2 {
    color: #0d9488;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 18px;
    text-align: center;
}

.form-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

label {
    color: #374151;
    font-weight: 600;
    font-size: 1rem;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1rem;
    background: #f5f7fa;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    border-color: #14b8a6;
    outline: none;
    box-shadow: 0 0 0 2px #14b8a633;
}

.btn,
button[type="submit"] {
    background: linear-gradient(135deg, #14b8a6, #0d9488);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px 0;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(20, 184, 166, 0.10);
    margin-top: 8px;
}

.btn:hover,
button[type="submit"]:hover {
    background: linear-gradient(135deg, #0d9488, #14b8a6);
    box-shadow: 0 4px 16px rgba(20, 184, 166, 0.18);
}

#mensagemCadastro,
#mensagemLogin {
    font-size: 1rem;
    text-align: center;
    margin-top: 10px;
    min-height: 24px;
}

a {
    color: #0d9488;
    text-decoration: none;
    font-weight: 600;
    display: block;
    text-align: center;
    margin-top: 10px;
    transition: color 0.2s;
}

a:hover {
    color: #14b8a6;
    text-decoration: underline;
}

@media (max-width: 600px) {
    .container {
        padding: 18px 8px 18px 8px;
        max-width: 98vw;
    }

    h2 {
        font-size: 1.3rem;
    }
}