@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@500;700;900&family=Outfit:wght@400;500;600;700;800&family=Share+Tech+Mono&display=swap');

/* ==========================================
   CSS CUSTOM VARIABLES (THEME CONFIGURATION)
   ========================================== */
:root {
  /* BRIGHT MODE (Renamed from Light) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --border-color: rgba(226, 232, 240, 0.8);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-rgb: 37, 99, 235;
  --accent: #ec4899;
  --accent-hover: #db2777;
  --success: #10b981;
  --danger: #ef4444;
  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.02);
  --border-radius: 16px;
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --glow: 0 0 0 transparent;
  --glass-blur: 12px;
  --neon-border: none;
  --cyber-grid: transparent;
  
  /* Ad Slots Specifics */
  --ad-bg: rgba(241, 245, 249, 0.6);
  --ad-border: rgba(203, 213, 225, 0.8);
  --ad-text: #64748b;
}

[data-theme="dark"] {
  /* DARK MODE */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-glass: rgba(15, 23, 42, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-rgb: 59, 130, 246;
  --accent: #f43f5e;
  --accent-hover: #fb7185;
  --success: #10b981;
  --danger: #f87171;
  --card-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 1px 5px rgba(255, 255, 255, 0.02);
  --glow: 0 0 20px rgba(59, 130, 246, 0.35);
  
  /* Ad Slots Specifics */
  --ad-bg: rgba(30, 41, 59, 0.5);
  --ad-border: rgba(255, 255, 255, 0.05);
  --ad-text: #475569;
}

[data-theme="cyberpunk"] {
  /* CYBERPUNK MODE */
  --bg-primary: #0c0813;
  --bg-secondary: #140d21;
  --bg-glass: rgba(20, 13, 33, 0.85);
  --border-color: #00f0ff;
  --text-primary: #00f0ff;
  --text-secondary: #ff0055;
  --text-muted: #e2d5f1;
  --primary: #ff0055;
  --primary-hover: #ff3377;
  --primary-rgb: 255, 0, 85;
  --accent: #f0f33f;
  --accent-hover: #f5f768;
  --success: #39ff14;
  --danger: #ff003c;
  --card-shadow: 0 0 15px rgba(0, 240, 255, 0.2), 0 0 5px rgba(255, 0, 85, 0.2);
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Share Tech Mono', monospace;
  --border-radius: 0px;
  --glow: 0 0 15px #ff0055, 0 0 5px #00f0ff;
  --glass-blur: 5px;
  --neon-border: 1px solid #00f0ff;
  --cyber-grid: linear-gradient(to right, rgba(0, 240, 255, 0.04) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(0, 240, 255, 0.04) 1px, transparent 1px);
                
  /* Ad Slots Specifics */
  --ad-bg: rgba(20, 13, 33, 0.9);
  --ad-border: 1px dashed #ff0055;
  --ad-text: #ff0055;
}

/* ==========================================
   GLOBAL RESET & STYLES
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  background-image: var(--cyber-grid);
  background-size: 40px 40px;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Cyberpunk scanlines */
[data-theme="cyberpunk"]::before {
  content: "";
  display: block;
  position: fixed;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.15) 50%), 
              linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
  background-size: 100% 4px, 3px 100%;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.8;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

[data-theme="cyberpunk"] h1, 
[data-theme="cyberpunk"] h2, 
[data-theme="cyberpunk"] h3 {
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.6);
  letter-spacing: 0.05em;
}

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

button, input, textarea, select {
  font-family: inherit;
}

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

/* ==========================================
   COMMON GLASS CARD & LAYOUT UTILITIES
   ========================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.glass-card {
  background-color: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  padding: 32px;
  position: relative;
  overflow: hidden;
}

[data-theme="cyberpunk"] .glass-card {
  border: 1px solid #00f0ff;
  border-left: 5px solid #ff0055;
  box-shadow: 0px 0px 15px rgba(0, 240, 255, 0.15);
}

.glow-btn {
  background-color: var(--primary);
  color: #ffffff;
  padding: 14px 28px;
  border: var(--neon-border);
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--glow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 1rem;
  letter-spacing: 0.03em;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.glow-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(var(--primary-rgb), 0.5);
}

[data-theme="cyberpunk"] .glow-btn {
  background: transparent;
  color: #00f0ff;
  border: 1px solid #00f0ff;
  position: relative;
  text-shadow: 0 0 5px #00f0ff;
  text-transform: uppercase;
}

[data-theme="cyberpunk"] .glow-btn::before {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 240, 255, 0.1);
  opacity: 0;
  transition: opacity 0.2s;
}

[data-theme="cyberpunk"] .glow-btn:hover {
  color: #090d16;
  background-color: #00f0ff;
  text-shadow: none;
  box-shadow: 0 0 15px #00f0ff;
}

/* ==========================================
   NATIVE ADVERTISEMENT BANNERS (GOOGLE ADSENSE PREPARED)
   ========================================== */
.ad-slot-horizontal {
  width: 100%;
  max-width: 728px;
  height: 90px;
  background-color: var(--ad-bg);
  border: 1px dashed var(--ad-border);
  border-radius: var(--border-radius);
  margin: 30px auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  text-align: center;
}

.ad-slot-horizontal::after {
  content: "SPONSORED ADVERTISEMENT";
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--ad-text);
  font-weight: 700;
  position: absolute;
  top: 6px;
}

.ad-slot-horizontal .ad-inner-content {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 15px;
}

.ad-slot-sidebar {
  width: 100%;
  max-width: 300px;
  height: 250px;
  background-color: var(--ad-bg);
  border: 1px dashed var(--ad-border);
  border-radius: var(--border-radius);
  margin: 20px auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.ad-slot-sidebar::after {
  content: "SPONSORED AD";
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--ad-text);
  font-weight: 700;
  position: absolute;
  top: 8px;
}

.ad-slot-sidebar .ad-inner-content {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 20px;
  text-align: center;
  padding: 0 16px;
}

[data-theme="cyberpunk"] .ad-slot-horizontal,
[data-theme="cyberpunk"] .ad-slot-sidebar {
  border-radius: 0;
  border: 1px dashed #ff0055;
  background-color: #0c0813;
}

/* ==========================================
   STICKY NAVBAR
   ========================================== */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-color);
  height: 80px;
  display: flex;
  align-items: center;
}

[data-theme="cyberpunk"] .navbar {
  border-bottom: 2px solid #00f0ff;
  box-shadow: 0 5px 15px rgba(0, 240, 255, 0.2);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  text-transform: uppercase;
}

.nav-brand svg {
  width: 32px;
  height: 32px;
  fill: var(--primary);
  filter: drop-shadow(var(--glow));
}

[data-theme="cyberpunk"] .nav-brand svg {
  fill: #ff0055;
  filter: drop-shadow(0 0 5px #ff0055);
}

.nav-brand-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="cyberpunk"] .nav-brand-gradient {
  background: linear-gradient(90deg, #ff0055 0%, #00f0ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  cursor: pointer;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.3s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

[data-theme="cyberpunk"] .nav-link {
  color: #ff0055;
  text-shadow: 0 0 2px #ff0055;
}

[data-theme="cyberpunk"] .nav-link:hover {
  color: #00f0ff;
  text-shadow: 0 0 5px #00f0ff;
}

[data-theme="cyberpunk"] .nav-link::after {
  background-color: #00f0ff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile burger button */
.burger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1010;
}

.burger-menu span {
  width: 100%;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Open mobile navigation state */
.burger-menu.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.burger-menu.open span:nth-child(2) {
  opacity: 0;
}

.burger-menu.open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ==========================================
   FLOATING THEME TOGGLE PANEL
   ========================================== */
.theme-panel-floating {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-color);
  padding: 10px;
  border-radius: 50px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 999;
}

[data-theme="cyberpunk"] .theme-panel-floating {
  border: 2px solid #00f0ff;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
  border-radius: 0px;
  background-color: #0c0813;
}

.theme-btn {
  background: transparent;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  position: relative;
}

.theme-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.theme-btn:hover {
  color: var(--text-primary);
  background-color: rgba(var(--primary-rgb), 0.1);
}

.theme-btn.active {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: var(--glow);
}

[data-theme="cyberpunk"] .theme-btn.active {
  background-color: #00f0ff;
  color: #0c0813;
  box-shadow: 0 0 10px #00f0ff;
  border-radius: 0;
}

[data-theme="cyberpunk"] .theme-btn {
  border-radius: 0;
  color: #ff0055;
}

[data-theme="cyberpunk"] .theme-btn:hover {
  background-color: rgba(255, 0, 85, 0.2);
  color: #00f0ff;
}

.theme-tooltip {
  position: absolute;
  bottom: 50px;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  font-size: 0.75rem;
  font-family: var(--font-heading);
  padding: 4px 8px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.theme-btn:hover .theme-tooltip {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   BACK TO TOP & FLOATING SHARING
   ========================================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  border: var(--neon-border);
  box-shadow: var(--glow);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 998;
}

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

.back-to-top:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(var(--primary-rgb), 0.4);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

[data-theme="cyberpunk"] .back-to-top {
  background-color: #ff0055;
  border: 1px solid #00f0ff;
  border-radius: 0;
  box-shadow: 0 0 10px #ff0055;
}

[data-theme="cyberpunk"] .back-to-top:hover {
  background-color: #00f0ff;
  color: #0c0813;
  box-shadow: 0 0 15px #00f0ff;
}

/* ==========================================
   TOAST NOTIFICATION STYLING
   ========================================== */
.toast-container {
  position: fixed;
  top: 30px;
  right: 30px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 380px;
  width: 100%;
}

.toast {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 6px solid var(--primary);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(120%);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
  transform: translateX(0);
}

.toast-success {
  border-left-color: var(--success);
}

.toast-danger {
  border-left-color: var(--danger);
}

.toast-info {
  border-left-color: var(--primary);
}

.toast-message {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

[data-theme="cyberpunk"] .toast {
  border-radius: 0;
  border-color: #00f0ff;
  background-color: #0c0813;
  color: #00f0ff;
}

[data-theme="cyberpunk"] .toast-success {
  border-left-color: #39ff14;
}

[data-theme="cyberpunk"] .toast-danger {
  border-left-color: #ff003c;
}

/* ==========================================
   ACCORDION & UTILITIES
   ========================================== */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 40px;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}

.faq-trigger {
  width: 100%;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: 12px 8px;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.faq-trigger svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-trigger svg {
  transform: rotate(180deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 8px;
}

.faq-item.active .faq-content {
  max-height: 200px;
  padding-top: 10px;
}

.faq-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

[data-theme="cyberpunk"] .faq-item {
  border-bottom: 1px dashed #00f0ff;
}

/* ==========================================
   PROFESSIONAL FOOTER
   ========================================== */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 40px 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

[data-theme="cyberpunk"] .footer {
  border-top: 2px solid #ff0055;
  background-color: #0c0813;
  box-shadow: 0 -5px 15px rgba(255, 0, 85, 0.2);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand-text {
  margin-top: 16px;
  font-size: 0.9rem;
  max-width: 320px;
  color: var(--text-muted);
}

.footer-title {
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-link {
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

.footer-link:hover {
  color: var(--primary);
  transform: translateX(3px);
}

[data-theme="cyberpunk"] .footer-link:hover {
  color: #00f0ff;
  text-shadow: 0 0 5px #00f0ff;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

.social-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.social-icon:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: rgba(var(--primary-rgb), 0.05);
  transform: translateY(-2px);
}

[data-theme="cyberpunk"] .social-icon {
  border-radius: 0;
  border-color: #00f0ff;
  color: #ff0055;
}

[data-theme="cyberpunk"] .social-icon:hover {
  border-color: #ff0055;
  color: #00f0ff;
  background-color: rgba(0, 240, 255, 0.1);
  box-shadow: 0 0 10px #00f0ff;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

[data-theme="cyberpunk"] .footer-bottom {
  border-top: 1px dashed #00f0ff;
}

/* ==========================================
   RESPONSIVE DESIGN (BREAKPOINTS)
   ========================================== */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .navbar {
    height: 70px;
  }

  .burger-menu {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--bg-secondary);
    flex-direction: column;
    padding: 60px 40px;
    gap: 24px;
    transform: translateY(-150%);
    transition: transform 0.4s cubic-bezier(0.77, 0.2, 0.05, 1.0);
    border-top: 1px solid var(--border-color);
    z-index: 995;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  }

  .nav-links.open {
    transform: translateY(0);
  }

  [data-theme="cyberpunk"] .nav-links {
    background-color: #0c0813;
    border-top: 2px solid #00f0ff;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .theme-panel-floating {
    bottom: 20px;
    right: 20px;
  }
  
  .back-to-top {
    bottom: 20px;
    left: 20px;
  }
}