/* ===========================
   Pomogaem.help Blog Styles
   =========================== */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #5b5fc7;
  --color-primary-dark: #4a4eb5;
  --color-primary-light: #e8e9f8;
  --color-text: #2d3748;
  --color-text-light: #4a5568;
  --color-text-muted: #718096;
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-bg-card: #ffffff;
  --color-border: #e2e8f0;
  --color-border-light: #edf2f7;
  --color-success: #48bb78;
  --color-accent: #ed8936;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --content-width: 760px;
  --header-height: 64px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border-light);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #7c7fd9 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  flex-shrink: 0;
}

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

.nav-links a {
  color: var(--color-text-light);
  font-size: 0.925rem;
  font-weight: 500;
  transition: color 0.2s;
  white-space: nowrap;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  padding: 24px;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  display: block;
  padding: 14px 16px;
  color: var(--color-text);
  font-size: 1.05rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.mobile-nav a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.content-container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Hero Section --- */
.hero {
  padding: 60px 0 48px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
}

.hero-categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.category-chip {
  display: inline-block;
  padding: 8px 18px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 100px;
  transition: all 0.2s;
  text-decoration: none;
}

.category-chip:hover {
  background: var(--color-primary);
  color: #fff;
}

/* --- Featured Article --- */
.featured-article {
  margin-bottom: 48px;
}

.featured-article .card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
}

.featured-article .card-image {
  background: #e8e9f8 url('../images/hero-featured.svg') center/cover no-repeat;
  min-height: 340px;
}

.featured-article .card-body {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 4px;
  margin-bottom: 14px;
  width: fit-content;
}

.card h2 {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--color-text);
}

.card h2 a {
  color: inherit;
}

.card h2 a:hover {
  color: var(--color-primary);
}

.card-excerpt {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.825rem;
  color: var(--color-text-muted);
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- Section Title --- */
.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.section-title h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.section-title a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* --- Article Grid --- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}

.article-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.article-card .card-thumb {
  height: 180px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #e8e9f8;
}

.article-card .card-thumb[data-topic="productivity"] {
  background-image: url('../images/thumb-productivity.svg');
}

.article-card .card-thumb[data-topic="burnout"] {
  background-image: url('../images/thumb-burnout.svg');
}

.article-card .card-thumb[data-topic="sleep"] {
  background-image: url('../images/thumb-sleep.svg');
}

.article-card .card-thumb[data-topic="communication"] {
  background-image: url('../images/thumb-communication.svg');
}

.article-card .card-thumb[data-topic="boundaries"] {
  background-image: url('../images/thumb-boundaries.svg');
}

.article-card .card-body {
  padding: 20px;
}

.article-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
}

.article-card h3 a {
  color: var(--color-text);
}

.article-card h3 a:hover {
  color: var(--color-primary);
}

.article-card .card-excerpt {
  font-size: 0.875rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Article Page --- */
.article-header {
  padding: 48px 0 32px;
  text-align: center;
}

.article-header .card-tag {
  margin-bottom: 18px;
}

.article-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.article-header .article-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 20px;
}

.article-header .article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-hero-image {
  max-width: 900px;
  margin: 0 auto 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-hero-image .hero-placeholder {
  min-height: 360px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #e8e9f8;
}

.article-hero-image .hero-placeholder[data-topic="productivity"] {
  background-image: url('../images/thumb-productivity.svg');
}

.article-hero-image .hero-placeholder[data-topic="burnout"] {
  background-image: url('../images/thumb-burnout.svg');
}

.article-hero-image .hero-placeholder[data-topic="sleep"] {
  background-image: url('../images/thumb-sleep.svg');
}

.article-hero-image .hero-placeholder[data-topic="communication"] {
  background-image: url('../images/thumb-communication.svg');
}

.article-hero-image .hero-placeholder[data-topic="boundaries"] {
  background-image: url('../images/thumb-boundaries.svg');
}

/* --- Article Content --- */
.article-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px 60px;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--color-text);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--color-text);
}

.article-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
  color: var(--color-text);
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content li {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 8px;
  color: var(--color-text);
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 16px 24px;
  margin: 28px 0;
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-text-light);
}

.article-content blockquote p {
  margin-bottom: 0;
}

.article-content strong {
  font-weight: 700;
  color: var(--color-text);
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content a:hover {
  color: var(--color-primary-dark);
}

/* --- Table of Contents --- */
.toc {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 36px;
}

.toc h3 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.toc ol {
  list-style: decimal;
  padding-left: 20px;
}

.toc li {
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.toc a {
  color: var(--color-text-light);
}

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

/* --- Newsletter --- */
.newsletter-section {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  margin-bottom: 60px;
}

.newsletter-section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.newsletter-section p {
  color: var(--color-text-muted);
  margin-bottom: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form {
  display: flex;
  gap: 10px;
  max-width: 440px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-bg);
  transition: border-color 0.2s;
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.newsletter-form button {
  padding: 12px 28px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
  white-space: nowrap;
}

.newsletter-form button:hover {
  background: var(--color-primary-dark);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-disclaimer {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  margin-bottom: 20px;
}

.footer-disclaimer p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 900px;
}

.footer-business {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-business span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* --- Page Header (non-article pages) --- */
.page-header {
  padding: 48px 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* --- Page Content (static pages) --- */
.page-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 48px 24px 60px;
}

.page-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 36px 0 14px;
}

.page-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 28px 0 10px;
}

.page-content p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--color-text);
}

.page-content ul,
.page-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.page-content ul {
  list-style: disc;
}

.page-content ol {
  list-style: decimal;
}

.page-content li {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 6px;
}

.page-content strong {
  font-weight: 700;
}

/* --- Contact Form --- */
.contact-form {
  max-width: 560px;
}

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

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-bg);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-submit {
  padding: 12px 32px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
}

.form-submit:hover {
  background: var(--color-primary-dark);
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.contact-info-item {
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  text-align: center;
}

.contact-info-item .contact-info-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

.contact-info-item .contact-info-icon[data-icon="email"] {
  background-image: url('../images/icon-email.svg');
}

.contact-info-item .contact-info-icon[data-icon="location"] {
  background-image: url('../images/icon-location.svg');
}

.contact-info-item .contact-info-icon[data-icon="clock"] {
  background-image: url('../images/icon-clock.svg');
}

.contact-info-item h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.contact-info-item p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --- About Page --- */
.about-mission {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.about-mission-text h2 {
  margin-top: 0;
}

.about-mission-image {
  background: #e8e9f8 url('../images/about-hero.svg') center/cover no-repeat;
  border-radius: var(--radius-lg);
  min-height: 280px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.value-card {
  padding: 28px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  text-align: center;
}

.value-card .value-icon {
  display: block;
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

.value-card .value-icon[data-icon="mission"] {
  background-image: url('../images/value-mission.svg');
}

.value-card .value-icon[data-icon="science"] {
  background-image: url('../images/value-science.svg');
}

.value-card .value-icon[data-icon="community"] {
  background-image: url('../images/value-community.svg');
}

.value-card .value-icon[data-icon="growth"] {
  background-image: url('../images/value-growth.svg');
}

.value-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* --- Reading Progress Bar --- */
.reading-progress {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-primary);
  z-index: 101;
  transition: width 0.1s linear;
}

/* --- Tags --- */
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: all 0.2s;
}

.tag:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}

/* --- Search --- */
.search-bar {
  display: flex;
  max-width: 480px;
  margin: 0 auto 40px;
}

.search-bar input {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-bar button {
  padding: 12px 22px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: inherit;
}

/* --- Related Articles --- */
.related-articles {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px 60px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .featured-article .card {
    grid-template-columns: 1fr;
  }

  .featured-article .card-image {
    min-height: 220px;
  }

  .featured-article .card-body {
    padding: 28px;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-section {
    padding: 36px 24px;
  }

  .about-mission {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }

  .footer-business {
    flex-direction: column;
    gap: 8px;
  }

  .article-header .article-meta {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 40px 0 32px;
  }

  .container {
    padding: 0 16px;
  }

  .article-content {
    padding: 0 16px 40px;
  }
}