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

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Untitled UI Color System */
    --primary: #0080C0;
    --primary-dark: #006090;
    --primary-light: #F0F8FF;
    --primary-border: #D0E8FF;

    --primary-50: #F0F8FF;
    --primary-100: #E0F0FF;
    --primary-200: #B8E0FF;
    --primary-300: #8CD0FF;
    --primary-400: #40A0FF;
    --primary-500: #0080C0;
    --primary-600: #0070A8;
    --primary-700: #006090;
    --primary-800: #00486C;
    --primary-900: #003048;
    
    --gray-50: #F9FAFB;
    --gray-100: #F2F4F7;
    --gray-200: #EAECF0;
    --gray-300: #D0D5DD;
    --gray-400: #98A2B3;
    --gray-500: #667085;
    --gray-600: #475467;
    --gray-700: #344054;
    --gray-800: #1D2939;
    --gray-900: #101828;
    
    --success: #039855;
    --success-light: #D1FADF;
    --success-text: #027A48;
    
    --shadow-sm: 0px 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-md: 0px 4px 8px -2px rgba(16, 24, 40, 0.1), 0px 2px 4px -2px rgba(16, 24, 40, 0.06);
    --shadow-lg: 0px 12px 16px -4px rgba(16, 24, 40, 0.08), 0px 4px 6px -2px rgba(16, 24, 40, 0.03);
    --shadow-xl: 0px 20px 24px -4px rgba(16, 24, 40, 0.08), 0px 8px 8px -4px rgba(16, 24, 40, 0.03);
    
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    font-family: var(--font-sans);
    color: var(--gray-600);
    background-color: #FFFFFF;
    -webkit-font-smoothing: antialiased;
}

/* Header & Navbar */
.navbar-custom {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-100);
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 1030;
    transition: var(--transition-base);
}

.navbar-brand-custom {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--gray-900) !important;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.02em;
}

.brand-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary);
    display: inline-block;
}

.nav-link-custom {
    font-weight: 500;
    color: var(--gray-600) !important;
    transition: var(--transition-base);
    padding: 8px 16px !important;
    border-radius: 6px;
}

.nav-link-custom:hover {
    color: var(--gray-900) !important;
    background-color: var(--gray-50);
}

.nav-link-custom.active {
    color: var(--primary) !important;
    background-color: var(--primary-light);
}

/* Featured Blog Post */
.featured-section {
    padding: 64px 0 48px;
}

.featured-card {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    background: #FFFFFF;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 48px;
    transition: var(--transition-base);
}

@media (max-width: 991px) {
    .featured-card {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

.featured-img-wrapper {
    width: 100%;
    height: 100%;
    min-height: 380px;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
}

.featured-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.featured-card:hover .featured-img {
    transform: scale(1.03);
}

.featured-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 12px 0;
}

.post-meta-top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.badge-custom {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 4px 12px;
    border-radius: 16px;
    border: 1px solid var(--primary-border);
    display: inline-flex;
    align-items: center;
}

.post-date-meta {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
}

.featured-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    transition: var(--transition-base);
}

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

.featured-title a:hover {
    color: var(--primary);
}

.post-excerpt {
    font-size: 1.125rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* User Profile Badge */
.author-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--gray-100);
}

.author-name {
    font-weight: 600;
    color: var(--gray-900);
    font-size: 0.875rem;
}

.author-title {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Filter Controls */
.filter-container {
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 24px;
    margin-bottom: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.filter-group {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: -8px;
}

.btn-filter {
    background: transparent;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-600);
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn-filter:hover {
    color: var(--gray-900);
    background-color: var(--gray-50);
}

.btn-filter.active {
    color: var(--primary-dark);
    background-color: var(--primary-light);
}

/* Search Bar Custom */
.search-wrapper {
    position: relative;
    max-width: 320px;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--gray-900);
    outline: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0px 1px 2px rgba(16, 24, 40, 0.05), 0px 0px 0px 4px #F4EBFF;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    pointer-events: none;
    font-size: 1.1rem;
}

/* Blog Post Grid & Cards */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
    margin-bottom: 64px;
}

.blog-card {
    background: #FFFFFF;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-base);
}

.blog-card-img-wrapper {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
    border-radius: 12px;
    margin-bottom: 20px;
}

.blog-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.blog-card:hover .blog-card-img {
    transform: scale(1.04);
}

.blog-card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.4;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
    transition: var(--transition-base);
}

.blog-card-title a {
    color: inherit;
    text-decoration: none;
}

.blog-card-title a:hover {
    color: var(--primary);
}

.blog-card-desc {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.5;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--gray-100);
    padding-top: 16px;
}

/* Stats Badges */
.post-stats {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray-400);
    font-size: 0.75rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition-base);
}

.stat-item i {
    font-size: 0.875rem;
}

.stat-item:hover {
    color: var(--primary);
}

/* Newsletter Section */
.newsletter-section {
    background-color: var(--gray-50);
    border-radius: 16px;
    padding: 64px 48px;
    margin: 64px 0;
    text-align: center;
}

.newsletter-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.newsletter-subtitle {
    font-size: 1.125rem;
    color: var(--gray-500);
    margin-bottom: 32px;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 16px;
    max-width: 520px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.newsletter-input {
    flex-grow: 1;
    min-width: 260px;
    padding: 12px 18px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    outline: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.newsletter-input:focus {
    border-color: var(--primary);
    box-shadow: 0px 1px 2px rgba(16, 24, 40, 0.05), 0px 0px 0px 4px #F4EBFF;
}

.btn-primary-custom {
    background-color: var(--primary);
    color: #FFFFFF;
    border: 1px solid var(--primary);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.btn-primary-custom:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #FFFFFF;
}

/* Detail Page Custom Styles */
.article-container {
    max-width: 760px;
    margin: 64px auto;
}

.article-header {
    text-align: center;
    margin-bottom: 48px;
}

.article-title {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.article-hero-wrapper {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 48px;
    box-shadow: var(--shadow-lg);
}

.article-hero-img {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
}

.article-body {
    font-size: 1.125rem;
    color: var(--gray-700);
    line-height: 1.75;
    margin-bottom: 64px;
}

.article-body p {
    margin-bottom: 28px;
}

.article-body h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 48px;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.article-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 8px 24px;
    margin: 32px 0;
    font-style: italic;
    color: var(--gray-800);
    background-color: var(--gray-50);
    border-radius: 0 8px 8px 0;
}

/* Detail Interactions Block */
.interaction-bar {
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    padding: 24px 0;
    margin-bottom: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.like-button-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-like {
    background-color: var(--gray-50);
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-base);
    cursor: pointer;
}

.btn-like:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-border);
    color: var(--primary-dark);
}

.btn-like.liked {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #FFFFFF;
    animation: heartBeat 0.4s ease-in-out;
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    30% { transform: scale(1.15); }
    60% { transform: scale(0.95); }
    100% { transform: scale(1); }
}

.likes-list-display {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Comments Section */
.comments-container {
    margin-bottom: 64px;
}

.comments-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 32px;
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 48px;
}

.comment-card {
    background-color: var(--gray-50);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--gray-100);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

.commenter-name {
    font-weight: 600;
    color: var(--gray-900);
    font-size: 0.95rem;
}

.comment-date {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.comment-text {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* Form Styles */
.form-card {
    background-color: #FFFFFF;
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.form-group-custom {
    margin-bottom: 20px;
}

.form-label-custom {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: 6px;
    display: block;
}

.form-input-custom {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    outline: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.form-input-custom:focus {
    border-color: var(--primary);
    box-shadow: 0px 1px 2px rgba(16, 24, 40, 0.05), 0px 0px 0px 4px #F4EBFF;
}

/* Footer styling */
.footer-custom {
    background-color: var(--gray-900);
    color: var(--gray-400);
    padding: 64px 0 32px;
    border-top: 1px solid var(--gray-800);
    margin-top: auto;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-800);
    padding-bottom: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand {
    color: #FFFFFF !important;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.footer-link-item {
    color: var(--gray-400);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-base);
}

.footer-link-item:hover {
    color: #FFFFFF;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    flex-wrap: wrap;
    gap: 16px;
}

/* Like modal custom styling */
.like-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(16, 24, 40, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1050;
    display: none;
    align-items: center;
    justify-content: center;
}

.like-modal {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    transform: translateY(20px);
    transition: var(--transition-base);
}

.like-modal.active {
    transform: translateY(0);
}