/* Variáveis de cores */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

/* ===== UTILITY CLASSES ===== */

/* Hover effects */
.shadow-hover:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
    transition: box-shadow 0.3s ease-in-out;
}

/* Font sizes */
.fs-hero {
    font-size: 15rem;
}

.fs-small {
    font-size: 0.85rem;
}

/* Resize utilities */
.resize-none {
    resize: none;
}

/* Object position */
.object-top {
    object-position: top;
}

/* Error pages */
.error-code {
    font-size: 10rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.error-heading {
    font-size: 2rem;
    font-weight: 500;
}

.error-container {
    padding: 60px 15px;
}

.error-traceback {
    max-height: 400px;
}

/* Theme selection cards */
.tema-card-btn {
    transition: all 0.3s;
    outline: 1px solid var(--secondary-color);
    outline-offset: -1px;
}

.tema-card-btn:hover:not(.tema-selected) {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tema-card-btn.tema-selected {
    outline: 6px solid var(--primary-color);
}

/* Toast container offset */
.toast-offset {
    margin-bottom: 60px;
}

/* Preview image size */
.preview-120 {
    width: 120px;
    height: 120px;
    overflow: hidden;
}

/* HR separator */
.hr-separator {
    max-width: 200px;
}

/* Text truncation utilities */
.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.5;
    max-height: 4.5em; /* 3 lines * 1.5 line-height */
}