/**
 * Sayuswa Blog Portal Stylesheet
 * Support for Clean Light Theme (Default) & Dark Theme Toggle
 * @package SayuswaTheme
 * @version 2.2.0
 */

/* ==========================================================================
   THEME VARIABLES
   ========================================================================== */
.sayuswa-blog-portal {
  /* Default: Clean Light Theme */
  --portal-bg: #F8FAFC;
  --portal-hero-bg: linear-gradient(135deg, #053C53 0%, #092535 100%);
  --portal-hero-glow: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.2) 0%, rgba(16, 185, 129, 0.08) 50%, transparent 70%);
  --portal-card-bg: #FFFFFF;
  --portal-card-border: #E2E8F0;
  --portal-card-border-hover: rgba(2, 132, 199, 0.4);
  --portal-card-shadow: 0 4px 15px rgba(15, 23, 42, 0.05);
  --portal-card-shadow-hover: 0 16px 36px rgba(15, 23, 42, 0.1);
  --portal-text-primary: #0F172A;
  --portal-text-secondary: #475569;
  --portal-text-muted: #64748B;
  --portal-pill-bg: #FFFFFF;
  --portal-pill-border: #E2E8F0;
  --portal-pill-text: #475569;
  --portal-tag-bg: rgba(2, 132, 199, 0.08);
  --portal-tag-border: rgba(2, 132, 199, 0.22);
  --portal-tag-text: #0284C7;
  --portal-stat-bg: rgba(255, 255, 255, 0.08);
  --portal-stat-border: rgba(255, 255, 255, 0.15);

  background-color: var(--portal-bg);
  color: var(--portal-text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dark Theme Overrides */
.sayuswa-blog-portal[data-theme="dark"] {
  --portal-bg: #070A11;
  --portal-hero-bg: linear-gradient(180deg, #0B1120 0%, #070A11 100%);
  --portal-hero-glow: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.22) 0%, rgba(16, 185, 129, 0.08) 40%, transparent 70%);
  --portal-card-bg: #0F172A;
  --portal-card-border: rgba(255, 255, 255, 0.08);
  --portal-card-border-hover: rgba(56, 189, 248, 0.45);
  --portal-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  --portal-card-shadow-hover: 0 16px 36px rgba(0, 0, 0, 0.5);
  --portal-text-primary: #FFFFFF;
  --portal-text-secondary: #94A3B8;
  --portal-text-muted: #64748B;
  --portal-pill-bg: rgba(15, 23, 42, 0.8);
  --portal-pill-border: rgba(255, 255, 255, 0.1);
  --portal-pill-text: #94A3B8;
  --portal-tag-bg: rgba(16, 185, 129, 0.15);
  --portal-tag-border: rgba(52, 211, 153, 0.3);
  --portal-tag-text: #34D399;
  --portal-stat-bg: rgba(15, 23, 42, 0.55);
  --portal-stat-border: rgba(255, 255, 255, 0.08);
}

.portal-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   1. HERO SECTION
   ========================================================================== */
.portal-hero {
  background: var(--portal-hero-bg);
  padding: 65px 0 55px;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-bg-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1000px;
  height: 350px;
  background: var(--portal-hero-glow);
  pointer-events: none;
}

.hero-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #38BDF8;
  padding: 7px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Theme Switcher Button */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  padding: 7px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: #38BDF8;
  color: #38BDF8;
}

.hero-title {
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.18;
  margin-bottom: 18px;
  max-width: 920px;
  letter-spacing: -0.02em;
}

.hero-title span {
  background: linear-gradient(135deg, #38BDF8 0%, #34D399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.08rem;
  color: #CBD5E1;
  line-height: 1.65;
  max-width: 820px;
  margin-bottom: 36px;
}

/* Search Bar */
.portal-search-wrap {
  position: relative;
  max-width: 680px;
  margin-bottom: 42px;
}

.portal-search-wrap i.search-icon {
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  color: #38BDF8;
  font-size: 1.15rem;
  pointer-events: none;
}

.portal-search-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  padding: 16px 120px 16px 54px;
  font-size: 0.98rem;
  color: #FFFFFF;
  outline: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.portal-search-input::placeholder {
  color: #94A3B8;
}

.portal-search-input:focus {
  border-color: #38BDF8;
  background: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.35);
}

.search-key-hint {
  position: absolute;
  right: 48px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.78rem;
  color: #94A3B8;
  pointer-events: none;
}

.search-key-hint kbd {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  padding: 2px 6px;
  color: #E2E8F0;
  font-family: inherit;
}

.portal-search-clear {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  font-size: 1rem;
  display: none;
  padding: 4px;
  transition: color 0.2s ease;
}

.portal-search-clear:hover {
  color: #FFFFFF;
}

/* Stats Bar */
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--portal-stat-bg);
  border: 1px solid var(--portal-stat-border);
  padding: 20px 22px;
  border-radius: 14px;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.stat-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
  transform: translateY(-2px);
}

.stat-number {
  font-size: 1.35rem;
  font-weight: 800;
  color: #38BDF8;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.83rem;
  color: #CBD5E1;
}

/* ==========================================================================
   2. CATEGORY FILTER NAV (Responsive Scroll Bar)
   ========================================================================== */
.category-filter-nav {
  padding: 36px 0 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 768px) {
  .category-filter-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 14px;
    margin-right: -24px;
    padding-right: 24px;
  }
  .category-filter-nav::-webkit-scrollbar {
    display: none;
  }
}

.cat-pill {
  background: var(--portal-pill-bg);
  border: 1px solid var(--portal-pill-border);
  color: var(--portal-pill-text);
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  user-select: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.cat-pill:hover {
  border-color: #0284C7;
  color: #0284C7;
}

.cat-pill.active {
  background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  border-color: #0284C7;
  color: #FFFFFF;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.35);
}

/* ==========================================================================
   3. FEATURED EDITOR'S CHOICE SECTION
   ========================================================================== */
.featured-section {
  padding: 36px 0 50px;
}

.section-header-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--portal-text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, #0284C7, #10B981);
  border-radius: 2px;
}

.editor-pick-badge {
  font-size: 0.82rem;
  color: #D97706;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 600;
}

.featured-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 28px;
}

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

/* Main Featured Card */
.main-featured-card {
  background: var(--portal-card-bg);
  border: 1px solid var(--portal-card-border);
  border-radius: 22px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--portal-card-shadow);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.main-featured-card:hover {
  transform: translateY(-4px);
  border-color: var(--portal-card-border-hover);
  box-shadow: var(--portal-card-shadow-hover);
}

.main-featured-img-wrap {
  position: relative;
  width: 100%;
  height: 330px;
  overflow: hidden;
  background: #E2E8F0;
}

.main-featured-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.main-featured-card:hover .main-featured-img-wrap img {
  transform: scale(1.06);
}

.img-gradient-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 45%;
  background: linear-gradient(180deg, transparent, rgba(15, 23, 42, 0.5));
  pointer-events: none;
}

.featured-content {
  padding: 30px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.click-filter-tag {
  align-self: flex-start;
  background: var(--portal-tag-bg);
  border: 1px solid var(--portal-tag-border);
  color: var(--portal-tag-text);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.click-filter-tag:hover {
  background: rgba(2, 132, 199, 0.18);
  border-color: #0284C7;
  color: #0284C7;
}

.featured-title {
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 12px;
}

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

.featured-title a:hover {
  color: #0284C7;
}

.meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--portal-text-muted);
  margin-bottom: 16px;
}

.meta-bar span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.featured-excerpt {
  font-size: 0.94rem;
  color: var(--portal-text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.btn-read-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #0284C7;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: gap 0.25s ease, color 0.25s ease;
}

.btn-read-more:hover {
  gap: 14px;
  color: #10B981;
}

/* Secondary Stack Cards */
.secondary-stack {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.secondary-card {
  background: var(--portal-card-bg);
  border: 1px solid var(--portal-card-border);
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  gap: 16px;
  height: 130px;
  box-shadow: var(--portal-card-shadow);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.secondary-card:hover {
  transform: translateX(6px);
  border-color: var(--portal-card-border-hover);
  box-shadow: var(--portal-card-shadow-hover);
}

.secondary-img-wrap {
  width: 145px;
  min-width: 145px;
  height: 100%;
  overflow: hidden;
  background: #CBD5E1;
}

.secondary-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.secondary-card:hover .secondary-img-wrap img {
  transform: scale(1.08);
}

.secondary-body {
  padding: 16px 18px 16px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-grow: 1;
  overflow: hidden;
}

.secondary-title {
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.secondary-title a:hover {
  color: #0284C7;
}

/* ==========================================================================
   4. LEAD MAGNET BANNER
   ========================================================================== */
.portal-lead-banner {
  background: linear-gradient(135deg, #053C53 0%, #0F172A 100%);
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: 22px;
  padding: 38px 44px;
  margin: 36px 0 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 35px rgba(15, 23, 42, 0.15);
}

.lead-banner-glow {
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

@media (max-width: 768px) {
  .portal-lead-banner {
    flex-direction: column;
    text-align: center;
    padding: 30px 24px;
  }
}

.lead-banner-text h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.lead-banner-text p {
  font-size: 0.94rem;
  color: #CBD5E1;
  margin: 0;
}

.btn-whitepaper {
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.96rem;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-whitepaper:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(16, 185, 129, 0.5);
  color: #FFFFFF;
}

/* ==========================================================================
   5. POST GRID SECTION
   ========================================================================== */
.portal-grid-section {
  padding: 20px 0 90px;
}

.section-header-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.results-count-badge {
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid rgba(2, 132, 199, 0.2);
  color: var(--portal-text-muted);
  font-size: 0.85rem;
  padding: 5px 16px;
  border-radius: 20px;
}

.results-count-badge strong {
  color: #0284C7;
}

.post-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 28px;
}

@media (max-width: 480px) {
  .post-cards-grid {
    grid-template-columns: 1fr;
  }
}

.grid-card {
  background: var(--portal-card-bg);
  border: 1px solid var(--portal-card-border);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--portal-card-shadow);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  animation: fadeInUp 0.4s ease forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.grid-card:hover {
  transform: translateY(-6px);
  border-color: var(--portal-card-border-hover);
  box-shadow: var(--portal-card-shadow-hover);
}

.card-img-wrap {
  position: relative;
  width: 100%;
  height: 210px;
  overflow: hidden;
  background: #CBD5E1;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.grid-card:hover .card-img-wrap img {
  transform: scale(1.07);
}

.card-overlay-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(-8px);
  transition: all 0.3s ease;
}

.card-overlay-btn a {
  color: #38BDF8;
  font-size: 0.9rem;
}

.grid-card:hover .card-overlay-btn {
  opacity: 1;
  transform: translateY(0);
}

.card-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.card-title a:hover {
  color: #0284C7;
}

.card-excerpt {
  font-size: 0.9rem;
  color: var(--portal-text-secondary);
  line-height: 1.6;
  margin-bottom: 22px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.no-results-msg {
  display: none;
  text-align: center;
  padding: 70px 20px;
  color: var(--portal-text-secondary);
  grid-column: 1 / -1;
  background: var(--portal-card-bg);
  border: 1px dashed var(--portal-card-border);
  border-radius: 20px;
}

.no-results-msg i {
  font-size: 3.2rem;
  color: #0284C7;
  margin-bottom: 16px;
}

.btn-reset-search {
  background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  color: #FFFFFF;
  border: none;
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 16px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-reset-search:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(2, 132, 199, 0.35);
}

/* ==========================================================================
   6. MODAL WHITEPAPER
   ========================================================================== */
.portal-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(12px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 20px;
}

.portal-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.portal-modal-content {
  background: #0F172A;
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 24px;
  padding: 38px;
  max-width: 520px;
  width: 100%;
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  transform: translateY(24px);
  transition: transform 0.35s ease;
}

.portal-modal-overlay.active .portal-modal-content {
  transform: translateY(0);
}

.portal-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94A3B8;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.portal-modal-close:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.2);
}