:root {
    /* Cores extraídas do Manual de Marca UFRPE (Pág. 9) */
    --ufrpe-navy: #1E2B4F;
    --ufrpe-gold: #F9B233;
    
    /* Variáveis de tema Light */
    --bg-primary: #F8F9FA;
    --bg-card: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --border-color: #E5E7EB;
}

[data-theme='dark'] {
    --bg-primary: #111827;
    --bg-card: #1F2937;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --nav-bg: rgba(17, 24, 39, 0.95);
    --border-color: #374151;
}

body {
    font-family: 'Inter', 'Gill Sans', 'Gill Sans MT', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
}

/* Melhoria de Acessibilidade: Indicador de Foco */
button:focus, a:focus, input:focus, textarea:focus {
    outline: 3px solid var(--ufrpe-gold);
    outline-offset: 2px;
}

.text-navy { color: var(--ufrpe-navy); }
.bg-navy { background-color: var(--ufrpe-navy); }
.text-gold { color: var(--ufrpe-gold); }
.bg-gold { background-color: var(--ufrpe-gold); }
.border-gold { border-color: var(--ufrpe-gold); }

.nav-link.active {
    color: var(--ufrpe-navy);
    border-bottom: 3px solid var(--ufrpe-gold);
}

/* Sistema de Toast */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease-out;
}

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

/* Estilo para botões institucionais */
.btn-primary {
    background-color: var(--ufrpe-navy);
    color: white;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    background-color: #2D3E6B;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(30, 43, 79, 0.3);
}

/* Badge design - harmonizado */
.badge-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

/* Progress bar */
.progress-bar-fill {
    background: linear-gradient(90deg, var(--ufrpe-navy), var(--ufrpe-gold));
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}
.modal.active {
    display: flex;
}
.ruralize-logo-mark {
    width: 48px;
    height: 48px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--ufrpe-navy), #2D3E6B);
    color: var(--ufrpe-gold);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(249, 178, 51, 0.45);
}

.ruralize-logo-mark-footer {
    background: var(--ufrpe-gold);
    color: var(--ufrpe-navy);
    border-color: rgba(255, 255, 255, 0.2);
}

.rank-position-1 {
    background: linear-gradient(135deg, #F9B233, #ffe0a3);
}

.rank-position-2 {
    background: linear-gradient(135deg, #e5e7eb, #f8fafc);
}

.rank-position-3 {
    background: linear-gradient(135deg, #d6a16a, #f3d2ad);
}