/* Accessibility and UX Improvements */
/* Melhora acessibilidade e experiência do usuário */

/* Focus indicators melhorados */
*:focus {
    outline: 2px solid var(--cor-primaria);
    outline-offset: 2px;
}

/* Skip to content link para screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--cor-primaria);
    color: #000;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* ARIA labels melhorados */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Contraste melhorado para texto */
.text-high-contrast {
    color: #ffffff;
}

/* Botões acessíveis */
.btn-accessible {
    min-height: 44px;
    min-width: 44px;
    padding: 12px 24px;
    border: 2px solid var(--cor-primaria);
    background: var(--cor-primaria);
    color: #000;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-accessible:hover,
.btn-accessible:focus {
    background: var(--cor-secundaria);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
}

/* Formulários acessíveis */
.form-field {
    margin-bottom: 20px;
}

.form-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--cor-primaria);
}

.form-field input,
.form-field textarea,
.form-field select {
    width: 100%;
    padding: 12px;
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-size: 16px;
    transition: border-color 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
    border-color: var(--cor-primaria);
    outline: none;
}

/* Mensagens de erro acessíveis */
.error-message {
    color: #ef4444;
    font-size: 14px;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.error-message::before {
    content: "⚠️";
}

/* Loading states acessíveis */
.loading {
    position: relative;
}

.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid var(--cor-primaria);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Animações reduzidas para usuários com preferências */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Modo alto contraste */
@media (prefers-contrast: high) {
    :root {
        --cor-primaria: #ffff00;
        --cor-secundaria: #ff9900;
        --cor-texto: #ffffff;
        --cor-fundo-inicio: #000000;
    }
    
    .btn-accessible {
        border-width: 3px;
    }
}

/* Responsive typography */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .btn-accessible {
        min-height: 48px;
        padding: 14px 28px;
        font-size: 18px;
    }
}

/* Touch targets maiores para mobile */
@media (pointer: coarse) {
    .btn-accessible,
    .feature-card {
        min-height: 48px;
        padding: 12px;
    }
}