/* --- CSS RESET & BASIC SETUP --- */
:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #343a40;
    --secondary-hover: #23272b;
    --text-color: #e0e0e0;
    --text-muted: #adb5bd;
    --border-color: #495057;
    --success-color: #28a745;
    --error-color: #dc3545;
    --font-family: 'Poppins', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-hover);
}

/* --- HEADER & NAVIGATION --- */
.main-header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-color);
    font-weight: 600;
}

.logo h1 {
    font-size: 1.5rem;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    z-index: 1001;
    display: block;
}

/* --- MOBILE NAVIGATION STYLES --- */
.main-nav {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background-color: var(--surface-color);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    padding: 6rem 2rem 2rem;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 999;
    border-right: 1px solid var(--border-color);
    
    width: 80%;
    max-width: 320px;
    box-shadow: 5px 0px 15px rgba(0, 0, 0, 0.2);
}

.main-nav.active {
    transform: translateX(0);
}

.main-nav a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 1.2rem;
}

.main-nav a:hover {
    color: var(--text-color);
}


/* --- MAIN CONTENT & CARDS --- */
main {
    padding: 2.5rem 0;
}

.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.page-title {
    text-align: center;
    margin-bottom: 2.5rem;
}

.page-title h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* --- FORMS --- */
.forms-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.form-container h3 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.form-group {
    margin-bottom: 1rem;
}

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

input[type="text"], input[type="email"], input[type="password"], select {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1rem;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

/* --- BUTTONS --- */
.button-primary, .button-secondary {
    display: inline-block;
    width: 100%;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
}

.button-primary {
    background-color: var(--primary-color);
    color: #fff;
}
.button-primary:hover {
    background-color: var(--primary-hover);
}
.button-secondary {
    background-color: var(--secondary-color);
    color: #fff;
}
.button-secondary:hover {
    background-color: var(--secondary-hover);
}


/* --- RESULT PAGE --- */
.back-link {
    display: inline-block;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.boleto-card {
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}
.card-header h4{
    font-size: 1.2rem;
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.details-grid p { color: var(--text-muted); }
.details-grid strong, .valor, .status {
    color: var(--text-color);
    font-weight: 500;
}
.valor { color: var(--success-color); }

.code-block {
    background-color: var(--bg-color);
    padding: 0.75rem;
    border-radius: 6px;
    font-family: 'Courier New', Courier, monospace;
    word-break: break-all;
    margin-top: 0.5rem;
}

.total-container { text-align: center; }
.total-container span{ color: var(--primary-color); }

.error-box { border-left: 5px solid var(--error-color); }
.info-box { border-left: 5px solid var(--text-muted); }

/* --- FOOTER --- */
.main-footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* --- ESTILOS DO SPINNER DE CARREGAMENTO --- */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(18, 18, 18, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 5px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

button:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.6;
}

/* --- ESTILOS DA PÁGINA DE LOGIN --- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 3rem;
}

.login-container .form-container {
    width: 100%;
    max-width: 450px;
}

.login-container .page-title {
    margin-bottom: 1.5rem;
}
.login-container .page-title h2 {
    font-size: 2rem;
}

.flash-message {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 6px;
    border: 1px solid transparent;
    font-weight: 500;
}
.flash-message.success {
    color: #0f5132;
    background-color: #d1e7dd;
    border-color: #badbcc;
}
.flash-message.error {
    color: var(--error-color);
    background-color: #f8d7da;
    border-color: #f5c2c7;
}
.flash-message.info {
    color: #055160;
    background-color: #cff4fc;
    border-color: #b6effb;
}


/* --- RESPONSIVENESS (MEDIA QUERIES) --- */
@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }

    .main-nav {
        position: static;
        flex-direction: row;
        height: auto;
        width: auto;
        background: none;
        transform: translateX(0);
        padding: 0;
        border: none;
        box-shadow: none;
    }

    .forms-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    .details-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .card-header {
        flex-direction: row;
        align-items: center;
    }
    .button-secondary {
        width: auto;
    }
}