/* ==========================================================================
   PixelSwap Master Stylesheet
   Theme: Deep Indigo, Electric Violet, Neon Lime Accents
   ========================================================================== */

:root {
  /* Colors */
  --bg-main: #0b0f19;
  --bg-card: #151c2e;
  --bg-card-hover: #1e2842;
  --bg-input: #0f1523;
  --border-color: #273352;
  
  --primary-violet: #8b5cf6;
  --primary-violet-hover: #7c3aed;
  --accent-lime: #a3e635;
  --accent-lime-hover: #84cc16;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dark: #111827;
  
  --danger: #ef4444;
  --danger-hover: #dc2626;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Layout & Utility */
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-main: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(139, 92, 246, 0.25);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-center {
  text-align: center;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary-violet), var(--accent-lime));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-size: 1.1rem;
}

.logo-text .highlight {
  color: var(--accent-lime);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary-violet);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
  background: var(--primary-violet-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent-lime);
  color: var(--text-dark);
  box-shadow: 0 4px 14px rgba(163, 230, 53, 0.3);
}

.btn-accent:hover {
  background: var(--accent-lime-hover);
  transform: translateY(-2px);
}

.btn-outline-danger {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
}

.btn-outline-danger:hover {
  background: var(--danger);
  color: #ffffff;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* Hero Section */
.hero-section {
  padding: 60px 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--primary-violet);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, #a78bfa, var(--accent-lime));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px auto;
}

/* Converter Tool Card */
.converter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-main);
  position: relative;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
  background: var(--bg-input);
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.form-control {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-violet);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.slider {
  accent-color: var(--accent-lime);
  height: 6px;
  margin-top: 10px;
  cursor: pointer;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  background: rgba(15, 21, 35, 0.5);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary-violet);
  background: rgba(139, 92, 246, 0.05);
}

.file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.dropzone-icon {
  font-size: 3rem;
  color: var(--primary-violet);
  margin-bottom: 16px;
}

.dropzone h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.dropzone p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* Error Banner */
.error-banner {
  margin-top: 20px;
  padding: 12px 16px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--danger);
  border-radius: var(--radius-sm);
  color: #fca5a5;
  font-size: 0.9rem;
}

/* File Preview Grid */
.file-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.action-buttons {
  display: flex;
  gap: 12px;
}

.file-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.file-card {
  display: grid;
  grid-template-columns: 80px 1fr auto auto;
  align-items: center;
  gap: 20px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: var(--radius-md);
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.file-preview-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: #000;
}

.file-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}

.file-name {
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.savings-badge {
  color: var(--accent-lime);
  background: rgba(163, 230, 53, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.8rem;
}

.savings-badge.negative {
  color: #f87171;
  background: rgba(248, 113, 113, 0.1);
}

.file-status {
  font-size: 0.85rem;
  font-weight: 600;
}

.file-status.processing {
  color: var(--primary-violet);
}

.file-actions {
  display: flex;
  gap: 8px;
}

/* AdSense Slots */
.ad-slot {
  margin: 40px 0;
  text-align: center;
}

.ad-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.ad-placeholder {
  min-height: 100px;
  background: rgba(21, 28, 46, 0.5);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Sections Common */
.section {
  padding: 80px 0;
}

.section-title {
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* How It Works Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: var(--transition);
}

.step-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-violet);
}

.step-number {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.05);
  position: absolute;
  top: 16px;
  right: 24px;
}

.step-icon {
  width: 56px;
  height: 56px;
  background: rgba(139, 92, 246, 0.1);
  color: var(--primary-violet);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(163, 230, 53, 0.4);
}

.feature-icon {
  font-size: 1.8rem;
  color: var(--accent-lime);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

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

/* FAQ Accordion */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-main);
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 1.05rem;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--primary-violet);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: var(--bg-input);
}

.faq-answer p {
  padding: 0 24px 20px 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.faq-item.active .faq-answer {
  max-height: 200px;
}

/* Footer */
.footer {
  background: #080b12;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px 0;
  margin-top: 40px;
}

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

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

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text-main);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .file-card {
    grid-template-columns: 60px 1fr;
    gap: 12px;
  }

  .file-actions {
    grid-column: span 2;
    justify-content: flex-end;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 71px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 71px);
    background: var(--bg-main);
    flex-direction: column;
    padding: 40px 24px;
    gap: 24px;
    transition: var(--transition);
  }

  .nav-menu.active {
    left: 0;
  }

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

  .hero-title {
    font-size: 2rem;
  }

  .converter-card {
    padding: 20px;
  }
}/* ==========================================================================
   Hero Animated Background (Glow & Grid)
   ========================================================================== */

.hero-section {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

/* Subtle background grid pattern */
.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  pointer-events: none;
  z-index: -2;
}

/* Animated Glow Blobs */
.hero-section::after {
  content: '';
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, rgba(163, 230, 53, 0.15) 50%, rgba(11, 15, 25, 0) 70%);
  filter: blur(80px);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  animation: floatGlow 12s ease-in-out infinite alternate;
}

@keyframes floatGlow {
  0% {
    transform: translate(-50%, -10px) scale(1);
  }
  50% {
    transform: translate(-45%, 20px) scale(1.1);
  }
  100% {
    transform: translate(-55%, -20px) scale(0.95);
  }
}

/* Additional Page Hero / Content Styles for Inner Pages */
.page-header {
  padding: 60px 0 40px 0;
}

.legal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-main);
  margin-bottom: 60px;
}

.legal-content h2 {
  font-size: 1.5rem;
  margin: 32px 0 16px 0;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p, .legal-content ul {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.legal-content ul {
  list-style: disc;
  padding-left: 24px;
}

.legal-content a {
  color: var(--primary-violet);
  text-decoration: underline;
}

.legal-content a:hover {
  color: var(--accent-lime);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 32px;
}

.contact-info-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
}

.contact-info-item i {
  font-size: 1.5rem;
  color: var(--accent-lime);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .legal-content {
    padding: 24px;
  }
}