/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Variáveis de Tema - Dark Mode */
:root {
    --bg-color: #0d1117;
    --text-color: #ffffff;
    --container-bg: #161b22;
    --border-color: #30363d;
    --header-color: #58a6ff;
    --secondary-text: #8b949e;
    --input-bg: #0d1117;
    --input-text: #ffffff;
    --input-focus-border: #58a6ff;
    --btn-bg: #238636;
    --btn-hover: #2ea043;
    --link-color: #58a6ff;
}

/* Light Mode Overrides */
body.light-mode {
    --bg-color: #ffffff;
    --text-color: #000000;
    --container-bg: #f6f8fa;
    --border-color: #d1d9e0;
    --header-color: #0969da;
    --secondary-text: #656d76;
    --input-bg: #ffffff;
    --input-text: #000000;
    --input-focus-border: #0969da;
    --btn-bg: #1f883d;
    --btn-hover: #1a7f37;
    --link-color: #0969da;
}

/* Corpo da Página */
body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px; /* Margem de segurança para telas menores */
    transition: background-color 0.3s, color 0.3s;
}

/* Container de Cadastro */
.signup-container {
    background-color: var(--container-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 450px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    transition: background-color 0.3s, border-color 0.3s;
}

.signup-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.signup-header h1 {
    font-size: 1.6rem;
    color: var(--header-color);
    margin-bottom: 8px;
}

.signup-header p {
    font-size: 0.9rem;
    color: var(--secondary-text);
}

/* Formulário e Grupos */
.input-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-color);
    margin-bottom: 6px;
}

input {
    width: 100%;
    padding: 10px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--input-text);
    outline: none;
    transition: 0.2s;
}

input:focus {
    border-color: var(--input-focus-border);
}

/* Selects */
select {
    width: 100%;
    padding: 10px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--input-text);
    outline: none;
    transition: 0.2s;
}

select:focus {
    border-color: var(--input-focus-border);
}

/* Date Row */
.date-row {
    display: flex;
    gap: 10px;
}

.date-row select {
    flex: 1;
}

/* Phone Row */
.phone-row {
    display: flex;
    gap: 10px;
}

.phone-row select {
    flex: 1;
}

.phone-row input {
    flex: 2;
}

/* Botão de Finalizar */
.btn-signup {
    width: 100%;
    padding: 12px;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.2s;
}

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

/* Rodapé */
.signup-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.85rem;
}

.signup-footer a {
    color: var(--link-color);
    text-decoration: none;
}

.signup-footer a:hover {
    text-decoration: underline;
}

/* Botão de Toggle Dark/Light Mode */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    transition: color 0.3s;
    z-index: 1000;
}

.theme-toggle:hover {
    color: var(--header-color);
}

.card-question {
    border: 0;
    padding: 0;
}

.card-question legend {
    font-size: 0.85rem;
    margin-bottom: 6px;
}

.radio-option {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0 18px 0 0;
}

.radio-option input {
    width: auto;
}

.card-settings {
    border-left: 3px solid var(--header-color);
    padding-left: 12px;
}