:root {
    --bg-dark: #080808; /* Fundo corporativo mais profundo */
    --bg-card: rgba(26, 26, 26, 0.85); /* Card com leve transparência (Efeito Vidro) */
    --color-primary: #ffffff; /* Branco para destacar (combina com a Caveira) */
    --color-primary-hover: #e0e0e0; /* Cinza claro no hover */
    --text-light: #eaeaea;
    --text-muted: #a4b0be;
    --border-color: #333333;
    
    --status-paid: #4cd137;
    --status-paid-bg: rgba(76, 209, 55, 0.1);
    --status-pending: #e84118;
    --status-pending-bg: rgba(232, 65, 24, 0.1);
    
    --font-body: 'Roboto', sans-serif;
    --font-heading: 'Oswald', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-body);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    position: relative;
    min-height: 100vh;
}

/* Marca d'água (Logo no fundo) */
body::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 65vw;
    height: 65vh;
    background-image: url('logo.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.03; /* Transparência bem sutil para visual corporativo */
    z-index: -1;
    pointer-events: none; /* Garante que não bloqueie os cliques na tela */
}

h1, h2, h3 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Scrollbar Customizada (Dark Mode) */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: #444;
    border-radius: 4px;
    transition: background 0.3s;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-hover);
}

/* Tela de Login */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 400px;
}

/* Layout Principal */
.dashboard-container {
    max-width: 96%; /* Ocupa quase toda a tela, deixando apenas uma margem elegante */
    margin: 0 auto;
    padding: 20px;
}

.header {
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.site-logo-header {
    max-height: 60px;
    object-fit: contain;
}

.site-logo-login {
    max-height: 100px;
    object-fit: contain;
}

.header p {
    color: var(--text-muted);
}

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

.btn-logout {
    background: transparent;
    color: var(--status-pending);
    border: 1px solid var(--status-pending);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-logout:hover {
    background: var(--status-pending);
    color: var(--text-light);
}

.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

/* Cards de Resumo */
.summary-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
}

.summary-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    backdrop-filter: blur(10px); /* Desfoque do fundo do cartão */
    -webkit-backdrop-filter: blur(10px);
}

.summary-card p {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 5px;
    color: var(--text-muted);
}

.summary-card h3 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.summary-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
}

.summary-title {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.text-danger { color: var(--status-pending) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Lista de Aniversariantes */
.birthday-list {
    list-style: none;
    padding: 0;
    margin-top: 15px;
    text-align: left;
    font-size: 0.9rem;
}
.birthday-list li {
    padding: 4px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.birthday-list li:last-child { border-bottom: none; }

/* Cards Base */
.card {
    background-color: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 20px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px); /* Desfoque do fundo do cartão */
    -webkit-backdrop-filter: blur(10px);
}

.card h2 {
    margin-bottom: 20px;
    font-size: 1.25rem;
    color: var(--color-primary);
}

/* Formulário */
.complex-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-section-title {
    color: var(--color-primary);
    margin-top: 20px;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Campos levemente mais largos */
    gap: 15px;
}

.full-width { grid-column: 1 / -1; }

.form-submit-btn { margin-top: 20px; align-self: flex-start; }

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.input-group input, 
.form-select,
.form-textarea {
    padding: 10px;
    border: 1px solid var(--border-color);
    background-color: rgba(10, 10, 10, 0.8);
    color: var(--text-light);
    border-radius: 4px;
    outline: none;
    transition: border-color 0.3s;
}

.input-group input:focus, 
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.form-textarea {
    resize: vertical; /* Permite redimensionar apenas verticalmente */
}

.btn-primary {
    background-color: var(--color-primary);
    color: #000000; /* Texto preto para dar alto contraste no botão branco */
    border: none;
    padding: 10px 20px;
    font-weight: 500;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 4px;
    cursor: pointer;
    height: 42px;
    transition: background-color 0.3s;
}

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

/* Cabeçalho da Tabela e Busca */
.table-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.table-header-flex h2 {
    margin-bottom: 0;
}

.search-input {
    padding: 10px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-dark);
    color: var(--text-light);
    border-radius: 4px;
    outline: none;
    min-width: 280px;
    transition: border-color 0.3s;
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

/* Tabela */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-dark);
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

tbody tr {
    transition: background-color 0.2s;
}

tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03); /* Efeito Hover na linha da tabela */
}

tr.row-ready-exam td {
    background-color: rgba(255, 204, 0, 0.15); /* Fundo amarelo/dourado escuro */
}

.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.badge.pago { background-color: var(--status-paid-bg); color: var(--status-paid); border: 1px solid var(--status-paid); }
.badge.pendente { background-color: var(--status-pending-bg); color: var(--status-pending); border: 1px solid var(--status-pending); }

.btn-action { background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.1rem;}
.btn-action:hover { color: var(--text-light); }

.student-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: bold;
}
.student-link:hover { text-decoration: underline; color: var(--color-primary); }

/* Notificações (Toasts) */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    min-width: 250px;
    padding: 15px 20px;
    border-radius: 8px;
    color: #fff;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    animation: slideIn 0.3s ease-out, fadeOut 0.5s ease-in 4.5s forwards;
    border-left: 5px solid;
}

.toast.success {
    background-color: #2f3640;
    border-color: var(--status-paid);
}

.toast.error {
    background-color: #2f3640;
    border-color: var(--status-pending);
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; transform: translateX(100%); }
}

/* --- REGRAS DE IMPRESSÃO (Folha A4) --- */
@media print {
    body { background-color: #fff; color: #000; }
    body::before { display: none; } /* Esconde a logo de fundo para não gastar tinta preta */
    
    /* Esconde menus, botões e elementos que não precisam ir pro papel */
    .header, .btn-primary, .btn-action, .btn-close, #toast-container, .table-header-flex button { 
        display: none !important; 
    }
    
    .card { background: transparent; border: none; box-shadow: none; padding: 0; }
    .form-section-title { color: #000; border-bottom: 2px solid #000; }
    .input-group label { color: #333; font-weight: bold; }
    
    .form-textarea { 
        background: transparent; color: #000; 
        border: 1px solid #ccc; 
    }
}

/* Modal de Graduações */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    width: 100%; max-width: 500px;
    background: var(--bg-card);
    padding: 30px;
}

.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px; margin-bottom: 20px;
}

.modal-header h2 { margin-bottom: 0; }

.btn-close {
    background: none; border: none; color: var(--text-muted);
    font-size: 2rem; cursor: pointer; transition: color 0.3s;
}
.btn-close:hover { color: var(--color-primary); }

.graduacoes-list { list-style: none; padding: 0; }
.graduacoes-list li {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 10px; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.graduacoes-list li:last-child { border-bottom: none; }

.faixa {
    font-family: var(--font-heading); text-transform: uppercase;
    letter-spacing: 1px; font-size: 1.1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.valor { font-weight: bold; color: var(--text-light); }