@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #101828;
    --text-main: #1D2939;
    --text-muted: #475467;
    --border-color: #EAECF0;
    --accent-lime: #D5F522;
    --bg-white: #FFFFFF;
    --bg-light: #F9FAFB;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --shadow-xs: 0px 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-sm: 0px 1px 3px rgba(16, 24, 40, 0.1), 0px 1px 2px rgba(16, 24, 40, 0.06);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background-color: var(--bg-white);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

/* App Outer Shell */
.app-container {
    max-width: 100%;
    margin: 0 auto;
    background: var(--bg-white);
    overflow: clip;
}

/* Header */
.main-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
    color: var(--primary-color);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.nav-link:hover svg {
    transform: translateY(1px);
}

.btn-get-started {
    background-color: #1E2DFD;
    color: var(--bg-white);
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: background-color var(--transition-fast);
}

.btn-get-started:hover {
    background-color: #0A19E6;
}

/* Hero Section */
.hero-section {
    padding: 24px 32px 32px 32px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-left-content {
    grid-column: 1;
    grid-row: 1;
}

.hero-subscribe-form {
    grid-column: 1;
    grid-row: 2;
    margin-top: 28px;
}

.hero-image-wrap {
    grid-column: 2;
    grid-row: 1 / span 2;
    display: flex;
    justify-content: center;
}

.hero-book-img {
    width: 100%;
    max-width: 320px;
    height: auto;
    object-fit: contain;
    display: block;
    border-radius: 8px;
    filter: drop-shadow(0px 8px 16px rgba(0, 0, 0, 0.12));
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.hero-arrow {
    color: #1E2DFD;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 680px;
    font-weight: 400;
}

/* Layout Grid for sidebar & articles */
.main-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    padding: 32px;
    border-top: 1px solid var(--border-color);
}

/* Sidebar Categories */
.sidebar-categories {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.category-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.category-link.active {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

.category-link:hover:not(.active) {
    background-color: #F9FAFB;
    color: var(--primary-color);
}

.category-link svg {
    width: 16px;
    height: 16px;
}

/* Articles Container */
.articles-container {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

/* Featured Article styling */
.featured-article {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 32px;
    align-items: start;
    cursor: pointer;
}

.featured-image-wrapper {
    width: 100%;
    height: 380px;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-light);
}

.featured-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.featured-article:hover .featured-image-wrapper img {
    transform: scale(1.02);
}

.featured-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: center;
}

.featured-meta {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.featured-title {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary-color);
    margin-bottom: 16px;
    transition: color var(--transition-fast);
}

.featured-article:hover .featured-title {
    color: #1E2DFD;
}

.featured-description {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Author block */
.author-block {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--border-color);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
}

.post-date {
    font-size: 12px;
    color: var(--text-muted);
}

/* Post Grid (2 columns) */
.posts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
    row-gap: 48px;
}

.post-card {
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.post-image-wrapper {
    width: 100%;
    height: 240px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    background-color: var(--bg-light);
}

.post-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.post-card:hover .post-image-wrapper img {
    transform: scale(1.02);
}

.post-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.post-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--primary-color);
    transition: color var(--transition-fast);
}

.post-card:hover .post-title {
    color: #1E2DFD;
}

.post-arrow {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 4px;
    transition: transform var(--transition-fast);
}

.post-card:hover .post-arrow {
    transform: translate(2px, -2px);
}

.post-description {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 20px;
}

/* Pagination Row */
.pagination-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}

.btn-pagination {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    background-color: var(--bg-white);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.btn-pagination:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

/* Marquee Ticker */
.marquee-container {
    background-color: #010108;
    border-top: 1px solid #1F2937;
    border-bottom: 1px solid #1F2937;
    padding: 16px 0;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    display: flex;
}

.marquee-content {
    display: inline-flex;
    animation: marquee 25s linear infinite;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.05em;
    color: #FFFFFF;
    gap: 16px;
}

@keyframes marquee {
    0% { transform: translateX(0%); }
    100% { transform: translateX(-50%); }
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ticker-dot {
    width: 6px;
    height: 6px;
    background-color: #1E2DFD;
    border-radius: 50%;
}

/* Footer Section */
.footer-section {
    background-color: #010108;
    padding: 32px 32px 20px 32px;
    color: #FFFFFF;
    font-family: var(--font-sans);
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: start;
    padding-bottom: 16px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
    display: block;
}

.footer-tagline {
    font-size: 13px;
    font-weight: 500;
    color: #F3F4F6;
    margin: 0;
}

.footer-right {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.footer-section-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-heading {
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.brand-pipe {
    color: #1E2DFD;
    font-weight: 800;
}

.footer-description {
    font-size: 13px;
    line-height: 1.6;
    color: #D1D5DB;
    margin: 0;
}

.footer-subscribe-form {
    display: flex;
    border: 1px solid #1E2DFD;
    border-radius: 8px;
    background-color: transparent;
    padding: 4px;
    align-items: center;
    max-width: 500px;
    width: 100%;
}

.footer-subscribe-input {
    flex-grow: 1;
    border: none;
    padding: 8px 12px;
    font-size: 13px;
    outline: none;
    color: #FFFFFF;
    background: transparent;
}

.footer-subscribe-input::placeholder {
    color: #4B5563;
}

.btn-footer-join {
    background-color: #1E2DFD;
    color: #FFFFFF;
    padding: 6px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 12px;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn-footer-join:hover {
    background-color: #0A19E6;
}

.footer-social-icons {
    display: flex;
    gap: 16px;
    align-items: center;
}

.social-icon-link {
    color: #FFFFFF;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icon-link:hover {
    color: #1E2DFD;
}

/* Footer Bottom */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #1F2937;
    padding-top: 14px;
    font-size: 11.5px;
    color: #9CA3AF;
}

.footer-copyright {
    font-weight: 400;
}

.footer-bottom-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-bottom-nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-bottom-nav a {
    color: #9CA3AF;
    transition: color var(--transition-fast);
}

.footer-bottom-nav a:hover {
    color: #FFFFFF;
}

.nav-divider {
    color: #374151;
}

.btn-scroll-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: #1E2DFD;
    color: #FFFFFF;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity var(--transition-fast), visibility var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
}

.btn-scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.btn-scroll-top:hover {
    background-color: #0A19E6;
}

@media (max-width: 768px) {
    .marquee-content {
        font-size: 10px;
    }

    .footer-section {
        padding: 32px 20px 20px 20px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-bottom: 20px;
    }
    
    .footer-logo-img {
        height: 42px;
    }
    
    .footer-tagline {
        font-size: 12px;
    }
    
    .footer-heading {
        font-size: 11px;
    }
    
    .footer-description {
        font-size: 12px;
    }
    
    .footer-subscribe-input {
        font-size: 12px;
    }
    
    .btn-footer-join {
        font-size: 11px;
        padding: 6px 16px;
    }
    
    .footer-bottom {
        flex-direction: column-reverse;
        gap: 16px;
        align-items: flex-start;
        padding-top: 16px;
        font-size: 11px;
    }
    
    .footer-bottom-right {
        width: 100%;
        justify-content: space-between;
    }
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero-container {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
        gap: 20px;
    }

    .hero-left-content {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }

    .hero-subscribe-form {
        margin: 0 auto;
        width: 100%;
    }

    .hero-image-wrap {
        width: 100%;
        display: flex;
        justify-content: center;
        margin-bottom: 20px;
    }

    .hero-book-img {
        max-width: 380px;
        width: 80%;
    }

    .main-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .sidebar-categories {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 12px;
        white-space: nowrap;
        border-bottom: 1px solid var(--border-color);
    }
    
    .featured-article {
        grid-template-columns: 1fr;
    }
    
    .featured-image-wrapper {
        height: 280px;
    }
}

@media (max-width: 768px) {
    .main-header {
        padding: 16px 20px;
    }
    
    .main-nav {
        display: none;
    }
    
    .hero-section {
        padding: 20px 20px 20px 20px;
    }
    
    .hero-container {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
        gap: 0;
    }
    
    .hero-left-content {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .badge {
        margin-bottom: 12px;
    }
    
    .hero-title {
        font-size: 22px; /* Half of desktop size (42px) */
        line-height: 1.3;
        letter-spacing: -0.01em;
        margin-bottom: 8px;
    }
    
    .hero-subtitle {
        font-size: 15px;
        line-height: 1.6;
        margin-bottom: 16px;
    }
    
    .hero-image-wrap {
        width: 100%;
        display: flex;
        justify-content: center;
        margin-bottom: 20px;
    }
    
    .hero-book-img {
        max-width: 380px;
        width: 80%;
        height: auto;
    }
    
    .hero-subscribe-form {
        width: 100%;
    }
    
    .main-layout {
        padding: 20px;
    }
}

@media (max-width: 600px) {
    .posts-grid {
        grid-template-columns: 1fr;
    }
}

/* Opt-in Section below ticker */
.optin-section {
    background-color: var(--accent-lime);
    border-top: 1px solid #000;
    border-bottom: 1px solid #000;
    padding: 64px 32px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.optin-content {
    max-width: 640px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
}
.optin-text {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.6;
    color: #000;
    margin: 0;
}
.optin-form {
    display: flex;
    width: 100%;
    border: 1px solid #000;
    border-radius: 8px;
    background-color: var(--bg-white);
    padding: 6px;
    align-items: center;
    box-shadow: var(--shadow-xs);
}
.optin-input {
    flex-grow: 1;
    border: none;
    padding: 10px 14px;
    font-size: 15px;
    outline: none;
    color: var(--primary-color);
    background: none;
}
.btn-optin-submit {
    background-color: #1E2DFD;
    color: var(--bg-white);
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}
.btn-optin-submit:hover {
    background-color: #0A19E6;
}

@media (max-width: 768px) {
    .optin-section {
        padding: 40px 20px;
    }
    .optin-form {
        flex-direction: column;
        border: none;
        background: none;
        padding: 0;
        gap: 12px;
        box-shadow: none;
    }
    .optin-input {
        border: 1px solid var(--border-color);
        border-radius: 8px;
        width: 100%;
        background-color: var(--bg-white);
        padding: 12px 16px;
    }
    .btn-optin-submit {
        width: 100%;
        padding: 12px;
    }
}