/**
 * Centro de Recursos - Styles
 * Mobile-first responsive design
 * Base font size: 16px
 */

/* ========================================
   RESOURCE CARDS
   ======================================== */

.resources-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (min-width: 1024px) {
    .resources-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.resource-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
}

.resource-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.resource-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.resource-card__type {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background-color: #00796B;
    color: #fff;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
}

.resource-card__badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: #FFD700;
    color: #333;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.resource-card__content {
    padding: 0 1rem 1rem;
    flex-grow: 1;
}

.resource-card__thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 4px;
    margin-bottom: 1rem;
    background-color: #f5f5f5;
}

.resource-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.resource-card__book-cover {
    width: 120px;
    margin: 0 auto 1rem;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.resource-card__book-cover img {
    width: 100%;
    height: auto;
    display: block;
}

.resource-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #333;
    margin: 0 0 0.75rem 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.resource-card__book-author {
    font-size: 1rem;
    color: #666;
    margin: 0 0 0.5rem 0;
    font-style: italic;
}

.resource-card__description {
    font-size: 1rem;
    line-height: 1.6;
    color: #666;
    margin: 0 0 1rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.resource-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #888;
    margin-top: auto;
}

.resource-card__category {
    background-color: #E3F2FD;
    color: #1976D2;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
}

.resource-card__author,
.resource-card__date,
.resource-card__readtime,
.resource-card__version,
.resource-card__platform,
.resource-card__source,
.resource-card__isbn {
    color: #888;
}

.resource-card__lead-magnet {
    background-color: #FFF3E0;
    border-left: 4px solid #F57C00;
    padding: 0.75rem;
    margin-top: 1rem;
    border-radius: 4px;
}

.lead-magnet__text {
    margin: 0;
    font-size: 0.875rem;
    color: #E65100;
    font-weight: 600;
}

.resource-card__footer {
    padding: 1rem;
    border-top: 1px solid #f0f0f0;
}

/* ========================================
   FILTERS
   ======================================== */

.filters {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.filters__search {
    margin-bottom: 1.5rem;
}

.filters__search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: border-color 0.2s;
    /* Minimum touch target */
    min-height: 44px;
}

.filters__search-input:focus {
    outline: none;
    border-color: #00796B;
}

.filters__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.filter-btn {
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    background-color: #f5f5f5;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    /* Minimum touch target */
    min-height: 44px;
    min-width: 44px;
}

.filter-btn:hover {
    background-color: #e0e0e0;
}

.filter-btn.active {
    color: #fff;
    background-color: #00796B;
    border-color: #00796B;
}

.filters__controls {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .filters__controls {
        grid-template-columns: 1fr 1fr;
    }
}

.filters__select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    background-color: #fff;
    cursor: pointer;
    transition: border-color 0.2s;
    /* Minimum touch target */
    min-height: 44px;
}

.filters__select:focus {
    outline: none;
    border-color: #00796B;
}

/* ========================================
   SIDEBAR WIDGETS
   ======================================== */

.sidebar-widget {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
}

.widget-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #333;
    margin: 0 0 1rem 0;
}

.widget-description {
    font-size: 1rem;
    line-height: 1.6;
    color: #666;
    margin: 0 0 1rem 0;
}

.widget-empty {
    font-size: 0.875rem;
    color: #999;
    margin: 0;
    font-style: italic;
}

/* Newsletter Widget */
.newsletter-widget {
    background: linear-gradient(135deg, #00796B 0%, #004D40 100%);
    color: #fff;
}

.newsletter-widget .widget-title {
    color: #fff;
}

.newsletter-widget .widget-description {
    color: rgba(255, 255, 255, 0.9);
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.newsletter-form input[type="email"] {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    /* Minimum touch target */
    min-height: 44px;
}

.newsletter-form input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.newsletter-form input[type="email"]:focus {
    outline: none;
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.widget-bonus {
    margin: 1rem 0 0 0;
    padding: 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    font-size: 0.875rem;
    text-align: center;
}

/* Categories Widget */
.categories-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.categories-list__item {
    margin-bottom: 0.75rem;
}

.categories-list__item:last-child {
    margin-bottom: 0;
}

.categories-list__item a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    color: #333;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.2s;
    /* Minimum touch target */
    min-height: 44px;
}

.categories-list__item a:hover {
    background-color: #f5f5f5;
}

.categories-list__item .count {
    color: #999;
    font-size: 0.875rem;
}

/* Featured Widget */
.featured-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.featured-list__item {
    margin-bottom: 1rem;
}

.featured-list__item:last-child {
    margin-bottom: 0;
}

.featured-list__item a {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    color: #333;
    text-decoration: none;
    transition: color 0.2s;
    /* Minimum touch target */
    min-height: 44px;
    padding: 0.25rem;
}

.featured-list__item a:hover {
    color: #00796B;
}

.featured-icon {
    flex-shrink: 0;
    font-size: 1.25rem;
}

.featured-title {
    font-size: 0.875rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   STATES
   ======================================== */

.loading-state,
.empty-state,
.error-state {
    text-align: center;
    padding: 3rem 1.5rem;
    grid-column: 1 / -1;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #00796B;
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

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

.loading-state p,
.empty-state__description,
.error-state__message {
    font-size: 1rem;
    color: #666;
    margin: 0;
}

.empty-state__icon,
.error-state__icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state__title,
.error-state__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
    margin: 0 0 0.75rem 0;
}

.empty-state__description,
.error-state__message {
    margin-bottom: 1.5rem;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    /* Minimum touch target */
    min-height: 44px;
    min-width: 44px;
}

.btn--primary {
    color: #fff;
    background-color: #00796B;
}

.btn--primary:hover {
    background-color: #004D40;
}

.btn--secondary {
    color: #00796B;
    background-color: transparent;
    border: 2px solid #00796B;
}

.btn--secondary:hover {
    background-color: #E0F2F1;
}

.btn--small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn--block {
    width: 100%;
    display: block;
}

/* ========================================
   LAYOUT
   ======================================== */

.resources-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1440px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

@media (min-width: 1024px) {
    .resources-layout {
        grid-template-columns: 1fr 320px;
        padding: 2rem;
    }
}

.resources-main {
    min-width: 0;
}

.resources-sidebar {
    min-width: 0;
}

/* ========================================
   RESPONSIVE TYPOGRAPHY
   ======================================== */

@media (max-width: 640px) {
    .resource-card__title {
        font-size: 1.125rem;
    }

    .widget-title {
        font-size: 1.125rem;
    }
}