/**
 * The 20 Newsletter Gallery - Frontend Styles
 * Version: 1.0.0
 */

/* ==========================================================================
   CSS Variables & Theme Integration
   ========================================================================== */
:root {
    --t20-newsletter-primary: var(--theme-color, #2ea3f2);
    --t20-newsletter-secondary: var(--theme-sec_color, #666666);
    --t20-newsletter-text: #333333;
    --t20-newsletter-light-text: #666666;
    --t20-newsletter-border: #e0e0e0;
    --t20-newsletter-bg: #ffffff;
    --t20-newsletter-light-bg: #f7f7f7;
    --t20-newsletter-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --t20-newsletter-radius: 8px;
}

/* ==========================================================================
   Main Container
   ========================================================================== */
.t20-newsletter-gallery {
    max-width: 100%;
    margin: 0 auto;
    font-family: inherit;
}

/* ==========================================================================
   Tab Navigation
   ========================================================================== */
.t20-newsletter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--t20-newsletter-light-bg);
    border-radius: var(--t20-newsletter-radius);
}

.t20-newsletter-tab {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--t20-newsletter-border);
    border-radius: 4px;
    background: var(--t20-newsletter-bg);
    color: var(--t20-newsletter-text);
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: none;
    letter-spacing: 0;
}

.t20-newsletter-tab:hover {
    border-color: var(--t20-newsletter-primary);
    color: var(--t20-newsletter-primary);
}

.t20-newsletter-tab.active {
    background: var(--t20-newsletter-primary);
    border-color: var(--t20-newsletter-primary);
    color: #ffffff;
}

/* ==========================================================================
   Newsletter Groups Container
   ========================================================================== */
.t20-newsletter-groups {
    position: relative;
}

.t20-newsletter-group {
    display: none;
}

.t20-newsletter-group.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Newsletter Cards
   ========================================================================== */
.t20-newsletter-card {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    padding: 25px;
    margin-bottom: 25px;
    background: var(--t20-newsletter-bg);
    border-radius: var(--t20-newsletter-radius);
    box-shadow: var(--t20-newsletter-shadow);
    border: 1px solid var(--t20-newsletter-border);
    transition: box-shadow 0.2s ease;
}

.t20-newsletter-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

/* ==========================================================================
   Newsletter Image
   ========================================================================== */
.t20-newsletter-image {
    flex-shrink: 0;
    width: 180px;
}

.t20-newsletter-image img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: block;
}

.t20-newsletter-placeholder {
    width: 100%;
    aspect-ratio: 8.5 / 11;
    background: var(--t20-newsletter-light-bg);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--t20-newsletter-border);
}

.t20-newsletter-placeholder .dashicons {
    font-size: 48px;
    width: 48px;
    height: 48px;
    color: #ccc;
}

/* ==========================================================================
   Newsletter Content
   ========================================================================== */
.t20-newsletter-content {
    flex: 1;
    min-width: 0;
}

.t20-newsletter-title {
    margin: 0 0 15px 0;
    padding: 0;
    font-size: 24px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--t20-newsletter-primary);
}

.t20-newsletter-title a {
    color: inherit;
    text-decoration: none;
}

.t20-newsletter-title a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Newsletter Description
   ========================================================================== */
.t20-newsletter-description {
    margin-bottom: 20px;
    color: var(--t20-newsletter-text);
    font-size: 15px;
    line-height: 1.6;
}

.t20-newsletter-description p {
    margin: 0 0 10px 0;
}

.t20-newsletter-description p:first-child {
    color: var(--t20-newsletter-text);
    font-weight: 500;
}

.t20-newsletter-description ul,
.t20-newsletter-description ol {
    margin: 10px 0;
    padding-left: 0;
    list-style: none;
}

.t20-newsletter-description li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: var(--t20-newsletter-light-text);
}

.t20-newsletter-description li::before {
    content: "\00BB";
    position: absolute;
    left: 0;
    color: var(--t20-newsletter-primary);
    font-weight: bold;
}

/* ==========================================================================
   View Button
   ========================================================================== */
.t20-newsletter-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #ffffff;
    background: var(--t20-newsletter-primary);
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.t20-newsletter-button:hover {
    background: color-mix(in srgb, var(--t20-newsletter-primary) 85%, black);
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.t20-newsletter-button .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
    line-height: 16px;
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.t20-newsletter-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--t20-newsletter-light-text);
    font-size: 16px;
    background: var(--t20-newsletter-light-bg);
    border-radius: var(--t20-newsletter-radius);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet */
@media screen and (max-width: 980px) {
    .t20-newsletter-card {
        gap: 20px;
        padding: 20px;
    }

    .t20-newsletter-image {
        width: 150px;
    }

    .t20-newsletter-title {
        font-size: 20px;
    }
}

/* Mobile */
@media screen and (max-width: 767px) {
    .t20-newsletter-tabs {
        padding: 15px;
        gap: 8px;
    }

    .t20-newsletter-tab {
        padding: 10px 14px;
        font-size: 13px;
    }

    .t20-newsletter-card {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    .t20-newsletter-image {
        width: 100%;
        max-width: 200px;
        margin: 0 auto;
    }

    .t20-newsletter-title {
        font-size: 18px;
        text-align: center;
    }

    .t20-newsletter-description {
        font-size: 14px;
    }

    .t20-newsletter-button {
        display: flex;
        justify-content: center;
        width: 100%;
    }
}

/* Small Mobile */
@media screen and (max-width: 480px) {
    .t20-newsletter-tabs {
        flex-direction: column;
    }

    .t20-newsletter-tab {
        width: 100%;
        text-align: center;
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .t20-newsletter-group.active {
        animation: none;
    }

    .t20-newsletter-card,
    .t20-newsletter-button {
        transition: none;
    }
}

/* Focus states for accessibility */
.t20-newsletter-tab:focus,
.t20-newsletter-button:focus {
    outline: 2px solid var(--t20-newsletter-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .t20-newsletter-card {
        border-width: 2px;
    }

    .t20-newsletter-tab {
        border-width: 2px;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    .t20-newsletter-tabs {
        display: none;
    }

    .t20-newsletter-group {
        display: block !important;
    }

    .t20-newsletter-card {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }

    .t20-newsletter-button {
        display: none;
    }
}