:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary: #8b5cf6; /* Roxo Aximoz */
    --primary-hover: #7c3aed;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --danger: #ef4444;
    --border: #334155;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Utilitários */
.hidden { display: none !important; }
.fade-in { animation: fadeIn 0.5s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Navegação */
nav {
    background: var(--card-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.logo { font-weight: 700; font-size: 1.5rem; color: var(--primary); letter-spacing: -1px; }

.nav-links button {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    margin-left: 1rem;
    cursor: pointer;
    font-size: 1rem;
    transition: 0.3s;
}

.nav-links button:hover { color: var(--text-main); }
.nav-links .btn-logout { color: var(--danger); }

/* Layout Principal */
#app-container {
    width: 90%;
    max-width: 1100px;
    margin: 2rem auto;
    flex: 1;
}

/* Cards de Autenticação */
.auth-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 400px;
    margin: 3rem auto;
    text-align: center;
}

.auth-card h1 { margin-bottom: 0.5rem; color: var(--primary); }
.auth-card p { color: var(--text-muted); margin-bottom: 1.5rem; }

/* Formulários */
input, select {
    width: 100%;
    padding: 12px 16px;
    margin: 8px 0 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #020617;
    color: var(--text-main);
    font-size: 1rem;
    box-sizing: border-box;
    outline: none;
}

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

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px;
    width: 100%;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: transparent; border: 1px solid var(--border); margin-top: 10px; color: var(--text-muted); }

.toggle-auth { margin-top: 1.5rem; font-size: 0.9rem; }
.toggle-auth a, .back-link { color: var(--primary); text-decoration: none; font-weight: 600; }

/* Dashboard Header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}
.badge-elo {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
}

/* Cards de Estatísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
}
.stat-card h3 { font-size: 0.9rem; color: var(--text-muted); margin: 0 0 0.5rem 0; font-weight: 500; }
.stat-card p { font-size: 1.8rem; font-weight: 700; margin: 0; }
.destaque-verde p { color: var(--success); }

/* Tabela */
.actions-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.btn-add { background: var(--success); color: #fff; border: none; padding: 10px 20px; border-radius: 8px; cursor: pointer; font-weight: 600; }

.table-container { overflow-x: auto; background: var(--card-bg); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; min-width: 600px; }
th, td { padding: 16px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px; }
.btn-delete { background: none; border: none; color: var(--danger); cursor: pointer; font-weight: 600; }

/* Ranking */
.ranking-container .stat-card { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; border-left: none; border-bottom: 2px solid var(--border); }
.ranking-pos { font-size: 1.2rem; font-weight: 800; color: var(--text-muted); width: 40px; }

/* Gráfico e Simulador */
.chart-container { background: var(--card-bg); padding: 1rem; border-radius: 12px; margin-top: 2rem; position: relative; height: 400px; }
.simulador-input label { display: block; text-align: left; margin-top: 10px; font-size: 0.9rem; color: var(--text-muted); }

/* Modal */
.modal { position: fixed; top:0; left:0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); z-index: 1000; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(5px); }
.modal-content { background: var(--card-bg); padding: 2rem; border-radius: 12px; width: 90%; max-width: 400px; }