/* ==========================================================================
   NexoDigitAI - Blog Subpage Styling v1.0
   ========================================================================== */

/* Blog Hero styling with tech glowing background */
.blog-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-xl) 0;
    background: var(--gradient-dark);
    text-align: center;
    color: var(--clr-white);
    overflow: hidden;
}

.blog-hero__glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, rgba(6, 182, 212, 0.05) 50%, transparent 100%);
    pointer-events: none;
    z-index: 1;
    filter: blur(80px);
}

.blog-hero__content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.blog-hero__title {
    font-size: clamp(var(--fs-3xl), 6vw, var(--fs-5xl));
    margin-bottom: var(--space-md);
    line-height: 1.2;
    color: var(--clr-white);
}


.blog-hero__subtitle {
    font-size: var(--fs-lg);
    color: var(--clr-grey-300);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
}

/* Search Bar styling */
.search-container {
    position: relative;
    width: 100%;
    max-width: 550px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 0.9rem 1.5rem 0.9rem 3.2rem;
    border-radius: var(--border-radius-full);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--clr-white);
    font-size: var(--fs-md);
    transition: var(--transition-base);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.search-input::placeholder {
    color: var(--clr-grey-500);
}

.search-input:focus {
    outline: none;
    border-color: var(--clr-accent);
    background-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.search-icon {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--clr-grey-300);
    font-size: 1.3rem;
    pointer-events: none;
}

/* Controls (Filters & Toggles) */
.blog-controls {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.controls-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--clr-grey-300);
    padding-bottom: var(--space-lg);
}

@media (min-width: 992px) {
    .controls-wrapper {
        flex-direction: row;
    }
}

/* View Mode Toggles */
.view-toggles {
    display: flex;
    background-color: var(--clr-grey-100);
    padding: 4px;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--clr-grey-300);
}

.view-toggle-btn {
    padding: 0.5rem 1.2rem;
    border-radius: var(--border-radius-full);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--clr-grey-600);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition-base);
    background: transparent;
}

.view-toggle-btn.active {
    background-color: var(--clr-white);
    color: var(--clr-primary);
    box-shadow: var(--shadow-sm);
}

/* Category Pills */
.category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    justify-content: center;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.category-pill {
    padding: 0.5rem 1.1rem;
    border-radius: var(--border-radius-full);
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--clr-grey-600);
    border: 1px solid var(--clr-grey-300);
    background-color: var(--clr-white);
    transition: var(--transition-base);
}

.category-pill:hover {
    color: var(--clr-secondary);
    border-color: var(--clr-secondary);
    background-color: rgba(124, 58, 237, 0.04);
}

.category-pill.active {
    color: var(--clr-white);
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: 0 4px 10px rgba(124, 58, 237, 0.2);
}

/* Panels switcher visibility */
.blog-panel {
    display: none;
}

.blog-panel.active {
    display: block;
}

/* Grid of Cards styling */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-4xl);
}

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

@media (min-width: 1200px) {
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.blog-card {
    background-color: var(--clr-white);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 35px rgba(15, 23, 42, 0.04);
    transition: var(--transition-base);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.09);
}

.blog-card__header {
    position: relative;
    width: 100%;
}

.blog-card__img-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}

.blog-card__img-placeholder.m-purple {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(124, 58, 237, 0.05) 100%);
    color: var(--clr-secondary);
}

.blog-card__img-placeholder.m-cyan {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(6, 182, 212, 0.05) 100%);
    color: var(--clr-accent-dark);
}

.blog-card__category {
    position: absolute;
    bottom: 12px;
    left: 16px;
    background-color: var(--clr-white);
    color: var(--clr-grey-800);
    padding: 0.3rem 0.8rem;
    border-radius: var(--border-radius-full);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
}

.blog-card__body {
    padding: var(--space-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.blog-card__meta {
    display: flex;
    gap: var(--space-md);
    font-size: var(--fs-sm);
    color: var(--clr-grey-500);
    margin-bottom: var(--space-sm);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.blog-card__title {
    font-size: var(--fs-xl);
    color: var(--clr-grey-900);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.blog-card__excerpt {
    color: var(--clr-grey-600);
    font-size: var(--fs-md);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

.blog-card__footer {
    padding: 0 var(--space-lg) var(--space-lg) var(--space-lg);
}

.blog-card__btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

/* Newsletter Custom Card (Sits nicely in the grid) */
.newsletter-card {
    background: var(--gradient-primary);
    color: var(--clr-white);
    border: none;
    padding: var(--space-xl);
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.newsletter-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    border-radius: var(--border-radius-full);
    background: rgba(255, 255, 255, 0.05);
}

.newsletter-card__content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.newsletter-card__icon {
    font-size: 2.2rem;
    color: var(--clr-accent-light);
    margin-bottom: var(--space-sm);
}

.newsletter-card__title {
    color: var(--clr-white);
    font-size: var(--fs-2xl);
    margin-bottom: var(--space-xs);
}

.newsletter-card__text {
    color: var(--clr-grey-100);
    font-size: var(--fs-sm);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
}

.newsletter-form {
    margin-top: auto;
}

.newsletter-form__group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.newsletter-input {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--clr-white);
    font-size: var(--fs-sm);
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--clr-accent-light);
    background-color: rgba(255, 255, 255, 0.22);
}

.newsletter-submit {
    padding: 0.75rem;
    font-weight: 700;
}

.newsletter-msg {
    font-size: 12px;
    margin-top: var(--space-xs);
    color: var(--clr-accent-light);
    font-weight: 500;
    min-height: 18px;
}

.newsletter-msg.error {
    color: #f87171;
}

/* PANEL 2: Embedded Direct View Container */
.embeds-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
    padding-bottom: var(--space-4xl);
}

.embed-article {
    background-color: var(--clr-white);
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.embed-article__header {
    background-color: var(--clr-grey-900);
    color: var(--clr-white);
    padding: var(--space-lg) var(--space-xl);
}

.embed-article__header .blog-card__category {
    position: static;
    display: inline-block;
    background-color: rgba(255, 87, 34, 0.15);
    color: var(--clr-accent-alt);
    margin-bottom: var(--space-sm);
    box-shadow: none;
}

.embed-article__title {
    color: var(--clr-white);
    font-size: var(--fs-2xl);
    margin-bottom: 0;
}

.embed-article__body {
    position: relative;
    width: 100%;
}

.blog-iframe {
    width: 100%;
    display: block;
    border: none;
    background-color: #f8fafc;
}

/* Immersive Overlay Reader Modal (Sleek Glassmorphic view) */
.blog-reader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.blog-reader[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
}

.blog-reader__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.blog-reader__container {
    position: relative;
    z-index: 2;
    width: 92%;
    max-width: 1100px;
    height: 85%;
    background-color: var(--clr-white);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
}

.blog-reader[aria-hidden="false"] .blog-reader__container {
    transform: scale(1) translateY(0);
}

.blog-reader__header {
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--clr-grey-300);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    position: relative;
}

.blog-reader__category {
    font-size: 11px;
    font-weight: 700;
    color: var(--clr-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    grid-column: 1 / 2;
    margin-bottom: 2px;
}

.blog-reader__title {
    font-size: var(--fs-lg);
    color: var(--clr-grey-900);
    grid-column: 1 / 2;
}

@media (min-width: 768px) {
    .blog-reader__title {
        font-size: var(--fs-xl);
    }
}

.blog-reader__close {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    font-size: 2.2rem;
    color: var(--clr-grey-600);
    line-height: 1;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    padding: 0.5rem;
}

.blog-reader__close:hover {
    color: var(--clr-error);
    transform: scale(1.1);
}

.blog-reader__body {
    flex-grow: 1;
    position: relative;
    height: 100%;
}

.blog-reader__body iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.blog-reader__body.loaded iframe {
    opacity: 1;
}

.blog-reader__spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--clr-grey-600);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.blog-reader__body.loaded .blog-reader__spinner {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--clr-grey-300);
    border-top: 4px solid var(--clr-secondary);
    border-radius: var(--border-radius-full);
    animation: spin 1s linear infinite;
}

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

/* Active links custom coloring on blog navbar */
.header__link.active {
    color: var(--clr-secondary) !important;
    background-color: rgba(124, 58, 237, 0.08) !important;
    border: 1px solid rgba(124, 58, 237, 0.25) !important;
}

/* Responsive category list padding */
@media (max-width: 576px) {
    .blog-controls {
        margin-top: var(--space-md);
        margin-bottom: var(--space-md);
    }
    .controls-wrapper {
        padding-bottom: var(--space-md);
        gap: var(--space-md);
    }
    .view-toggles {
        width: 100%;
    }
    .view-toggle-btn {
        flex: 1;
        justify-content: center;
    }
}