/* ==========================================================================
   Adsterra CPM Optimized Web Portal - Styling & Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap');

:root {
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;

  /* Color Palette - Cyber Dark Theme */
  --bg-dark: #0a0d14;
  --bg-card: rgba(18, 24, 38, 0.7);
  --bg-card-hover: rgba(26, 35, 56, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(99, 102, 241, 0.4);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;

  --gradient-accent: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
  --gradient-btn: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-dark: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(99, 102, 241, 0.4);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Background Animated Gradient Mesh */
.bg-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bg-glow::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(0,0,0,0) 70%);
  animation: floatOrb 12s infinite alternate ease-in-out;
}

.bg-glow::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, rgba(0,0,0,0) 70%);
  animation: floatOrb 15s infinite alternate-reverse ease-in-out;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, 40px) scale(1.1); }
}

/* Utility Classes */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-cpm {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-hot {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-tech {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-primary);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

[data-theme="light"] header {
  background: rgba(248, 250, 252, 0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: var(--shadow-glow);
}

.logo span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition-fast);
}

.btn-icon:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}

.btn-ad-manager {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--gradient-btn);
  color: #fff;
  border: none;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
  transition: var(--transition-normal);
}

.btn-ad-manager:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.6);
}

/* ==========================================================================
   AD CONTAINERS & SLOTS (ADSTERRA OPTIMIZED)
   ========================================================================== */

.ad-wrapper {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.ad-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.ad-box {
  width: 100%;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  transition: var(--transition-fast);
}

.ad-box:hover {
  border-color: var(--accent-primary);
}

/* Demo ad fallback styling when ad codes aren't set yet */
.ad-demo-placeholder {
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted);
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(0,0,0,0) 70%);
}

.ad-demo-title {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  font-size: 1rem;
}

.ad-demo-subtitle {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.ad-demo-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(99, 102, 241, 0.2);
  color: var(--accent-primary);
}

/* Specific Banner Sizes */
.ad-leaderboard {
  min-height: 90px;
  max-width: 728px;
}

.ad-rectangle {
  min-height: 250px;
  max-width: 300px;
}

.ad-skyscraper {
  min-height: 600px;
  max-width: 160px;
}

.ad-native {
  min-height: 100px;
  max-width: 100%;
}

.ad-sticky-bottom {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 99;
  background: rgba(10, 13, 20, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-color);
  padding: 0.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.5);
  transition: transform 0.3s ease;
}

.ad-sticky-bottom.collapsed {
  transform: translateY(100%);
}

.ad-sticky-close {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.ad-sticky-close:hover {
  background: rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* Direct Link High-CPM Buttons */
.direct-link-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid var(--border-color-hover);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.direct-link-content h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.direct-link-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.btn-direct-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.95rem;
  box-shadow: var(--shadow-glow);
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-direct-link:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 35px rgba(168, 85, 247, 0.5);
}

/* ==========================================================================
   HERO & MAIN CONTENT LAYOUT
   ========================================================================== */

.hero-section {
  padding: 3rem 0 2rem;
  text-align: center;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(180deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .hero-title {
  background: linear-gradient(180deg, #0f172a 0%, #334155 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* Main Grid Layout */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (max-width: 992px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
}

/* Category Filter Bar */
.category-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  scrollbar-width: none;
}

.category-bar::-webkit-scrollbar {
  display: none;
}

.cat-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-fast);
}

.cat-btn:hover, .cat-btn.active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Article Cards Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.card-img-wrapper {
  position: relative;
  width: 100%;
  height: 180px;
  overflow: hidden;
}

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

.card:hover .card-img {
  transform: scale(1.05);
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.card-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.card-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.btn-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-read-more:hover {
  color: var(--accent-secondary);
  gap: 0.6rem;
}

/* Sidebar Styling */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.widget-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

/* Interactive Web Tool Widget */
.tool-box {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tool-input {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-main);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  outline: none;
}

.tool-input:focus {
  border-color: var(--accent-primary);
}

.tool-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.result-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.result-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* Popular Posts Widget */
.popular-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.popular-item {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.popular-item:hover .popular-title {
  color: var(--accent-primary);
}

.popular-num {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-dim);
  width: 24px;
}

.popular-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
}

/* ==========================================================================
   MODALS (AD MANAGER, ARTICLE READER, PRIVACY POLICY)
   ========================================================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-container {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 750px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: #ef4444;
}

.modal-body {
  padding: 1.5rem;
}

/* Adsterra Control Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-textarea, .form-input {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-main);
  font-family: monospace;
  font-size: 0.85rem;
  resize: vertical;
}

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

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.btn-secondary {
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
}

.btn-secondary:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.btn-primary {
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--gradient-btn);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  opacity: 0.9;
}

/* ==========================================================================
   FOOTER & POLICIES
   ========================================================================== */

footer {
  margin-top: auto;
  background: rgba(10, 13, 20, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 5rem; /* Extra bottom padding for sticky ad */
}

[data-theme="light"] footer {
  background: rgba(241, 245, 249, 0.95);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.footer-col h5 {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
}

@media (max-width: 600px) {
  .footer-bottom {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}