/* 1. VARIÁVEIS DE TEMA (Dark Theme) */
:root {
    --bg-dark: #121212;
    --bg-surface: #1e1e1e;
    --border-color: #3a3a3a;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --color-primary: #6a11cb;
    --color-secondary: #2575fc;
    --color-danger: #dc3545;
    --color-success: #28a745;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* 2. RESET BÁSICO */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

/* 3. CONTAINER DO FORMULÁRIO */
.form-container {
    background-color: var(--bg-surface);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 450px;
}

.form-container h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.form-container p {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 2rem;
}

/* 4. GRUPO DE INPUTS */
.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-group input {
    width: 100%;
    padding: 0.85rem 1rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.3);
}

/* 5. BOTÕES */
.btn {
    display: inline-block;
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.85;
}

.btn-primary {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    color: #fff;
}

.btn-secondary {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* 6. LINKS E MENSAGENS */
.form-link {
    text-align: center;
    margin-top: 1.5rem;
}

.form-link a {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 500;
}

.form-link a:hover {
    text-decoration: underline;
}

/* Mensagens de erro/sucesso */
#message {
    text-align: center;
    padding: 0.8rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none; /* Começa escondido */
    font-weight: 500;
}

#message.error {
    background-color: rgba(220, 53, 69, 0.2);
    color: var(--color-danger);
    display: block;
}

#message.success {
    background-color: rgba(40, 167, 69, 0.2);
    color: var(--color-success);
    display: block;
}