/* CSS Variables & Design Tokens */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --secondary: #7C3AED;
  --secondary-hover: #6D28D9;
  --dark: #111827;
  --text: #374151;
  --text-light: #6B7280;
  --bg-light: #F8FAFC;
  --border: #E5E7EB;
  --success: #16A34A;
  --success-light: #DCFCE7;
  --white: #FFFFFF;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --font-family: 'Montserrat', sans-serif;
  --font-family-title: 'Outfit', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

html, body {
  min-height: 100vh;
  background-color: var(--bg-light);
  color: var(--text);
  font-family: var(--font-family);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-title);
  color: var(--dark);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text);
  margin-bottom: 1rem;
}

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

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

/* Navigation Header */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-family-title);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark);
}

.logo-link span {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  color: var(--white) !important;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.3);
}

/* Mobile Hamburger Menu */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--dark);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 2px;
}

/* Mobile Nav Styles */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 64px);
    background: var(--white);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    transition: var(--transition);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

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

  .header-actions {
    display: none;
  }
}

/* Main Content Wrapper */
.main-content {
  flex-grow: 1;
}

/* Hero Section */
.hero-section {
  padding: 5rem 1.5rem;
  background: linear-gradient(180deg, var(--white) 0%, rgba(248, 250, 252, 0.8) 100%);
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
}

.hero-section h1 {
  font-size: 3rem;
  margin-bottom: 1.2rem;
  letter-spacing: -0.5px;
}

.hero-section p {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

@media (max-width: 480px) {
  .hero-section h1 {
    font-size: 2.2rem;
  }
  .hero-buttons {
    flex-direction: column;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  color: var(--white);
}

.btn-secondary {
  background: var(--white);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-light);
  border-color: var(--text-light);
}

.btn-success {
  background: var(--success);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.2);
}

.btn-success:hover {
  background: #15803d;
  color: var(--white);
}

.btn-danger {
  background: var(--danger);
  color: var(--white);
}

.btn-danger:hover {
  background: #b91c1c;
  color: var(--white);
}

/* Card Styling */
.card-container {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

.card h2 {
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
  position: relative;
}

/* Image Compressor Tool Core UI */
.compressor-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Drag & Drop Zone */
.upload-zone {
  border: 3px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 4rem 2rem;
  text-align: center;
  background-color: var(--bg-light);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary);
  background-color: rgba(37, 99, 235, 0.04);
}

.upload-icon {
  font-size: 3.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
  display: block;
}

.upload-text {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--dark);
}

.upload-subtext {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.file-input {
  display: none;
}

/* Settings Bar */
.global-settings {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  background: var(--bg-light);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .global-settings {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.setting-group label {
  font-family: var(--font-family-title);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--dark);
  display: flex;
  justify-content: space-between;
}

.quality-slider-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.quality-slider {
  -webkit-appearance: none;
  flex-grow: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  outline: none;
}

.quality-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  transition: var(--transition);
}

.quality-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.quality-value {
  font-weight: 700;
  font-family: var(--font-family-title);
  color: var(--primary);
  min-width: 2.5rem;
  text-align: right;
}

.select-input {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  font-family: var(--font-family);
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
}

/* Tool Actions Bar */
.tool-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.hidden {
  display: none !important;
}

/* Compression Queue List */
.image-queue {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

.queue-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 80px 1.5fr 1.5fr 1fr;
  gap: 1.5rem;
  align-items: center;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
}

.queue-item:hover {
  box-shadow: var(--shadow-md);
}

.queue-thumb-wrapper {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.queue-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.queue-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.queue-name {
  font-weight: 700;
  color: var(--dark);
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 250px;
}

.queue-meta {
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.queue-settings {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.queue-results {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}

.reduction-badge {
  display: inline-block;
  align-self: flex-start;
  background-color: var(--success-light);
  color: var(--success);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-top: 0.3rem;
}

.queue-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.btn-remove {
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition);
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
}

.btn-remove:hover {
  color: var(--danger);
}

@media (max-width: 900px) {
  .queue-item {
    grid-template-columns: 80px 1.2fr 1fr;
    gap: 1rem;
  }
  .queue-actions {
    grid-column: 2 / -1;
    flex-direction: row;
  }
}

@media (max-width: 600px) {
  .queue-item {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
  .queue-thumb-wrapper {
    margin: 0 auto;
  }
  .queue-name {
    max-width: 100%;
  }
  .queue-meta {
    justify-content: center;
  }
  .queue-actions {
    grid-column: 1;
    width: 100%;
  }
  .queue-actions .btn {
    width: 100%;
  }
}

/* Compare Modal/View */
.compare-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1rem;
}

.compare-pane {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.compare-pane-title {
  font-family: var(--font-family-title);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-light);
  text-transform: uppercase;
}

.compare-img-box {
  width: 100%;
  aspect-ratio: 4/3;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: #f1f5f9;
  background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
  background-size: 16px 16px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.compare-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

@media (max-width: 600px) {
  .compare-container {
    grid-template-columns: 1fr;
  }
}

/* Detailed SEO Article Styling */
.seo-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.seo-article h2 {
  font-size: 2rem;
  margin-top: 2.5rem;
  margin-bottom: 1.2rem;
  color: var(--dark);
}

.seo-article h3 {
  font-size: 1.4rem;
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
  color: var(--dark);
}

.seo-article p {
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.seo-article ul,
.seo-article ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.seo-article li {
  margin-bottom: 0.6rem;
  font-size: 1.05rem;
}

.seo-table-container {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.seo-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.seo-table th,
.seo-table td {
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
}

.seo-table th {
  background-color: var(--bg-light);
  font-family: var(--font-family-title);
  font-weight: 700;
  color: var(--dark);
}

.seo-table tr:last-child td {
  border-bottom: none;
}

/* Contact Page Form styling */
.contact-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group label {
  font-family: var(--font-family-title);
  font-weight: 700;
  font-size: 0.9rem;
}

.input-field {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.input-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea.input-field {
  min-height: 150px;
  resize: vertical;
}

.form-alert {
  background: rgba(37, 99, 235, 0.05);
  border: 1px dashed var(--primary);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--primary);
}

/* Info box details (for sidebar) */
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

.info-item {
  display: flex;
  gap: 1rem;
}

.info-icon {
  font-size: 1.5rem;
  color: var(--primary);
}

.info-content h3 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.info-content p {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* FAQs accordion */
.faq-section {
  max-width: 800px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.faq-title {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 2rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.faq-item summary {
  padding: 1.2rem 1.5rem;
  font-weight: 700;
  font-family: var(--font-family-title);
  color: var(--dark);
  cursor: pointer;
  outline: none;
  user-select: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--text-light);
  font-weight: 400;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.5rem 1.5rem 1.5rem;
  border-top: 1px solid transparent;
  color: var(--text);
  font-size: 0.98rem;
}

.faq-item[open] .faq-answer {
  border-top-color: var(--border);
}

/* Legal Pages Styling */
.legal-container {
  max-width: 800px;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

.legal-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-md);
}

.legal-card h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.legal-meta {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.legal-card h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

.legal-card p {
  margin-bottom: 1.2rem;
}

.legal-card ul {
  margin-left: 1.5rem;
  margin-bottom: 1.2rem;
}

.legal-card li {
  margin-bottom: 0.4rem;
}

/* Site Footer */
.site-footer {
  background: var(--dark);
  color: #94a3b8;
  padding: 4rem 1.5rem 2rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-about h3 {
  color: var(--white);
  font-family: var(--font-family-title);
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 800;
}

.footer-about h3 span {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-about p {
  color: #94a3b8;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-nav-title {
  color: var(--white);
  font-family: var(--font-family-title);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-link {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-link:hover {
  color: var(--white);
}

.footer-bottom {
  max-width: 1200px;
  margin: 3rem auto 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* AdSense Placeholders */
.adsense-placeholder {
  background: rgba(229, 231, 235, 0.4);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  margin: 2rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-light);
  min-height: 90px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  user-select: none;
}

.adsense-placeholder::before {
  content: 'ADVERTISEMENT';
  display: block;
  font-weight: 700;
  margin-bottom: 0.3rem;
  letter-spacing: 1px;
}

/* Breadcrumbs */
.breadcrumbs {
  max-width: 1200px;
  margin: 1.5rem auto 0 auto;
  padding: 0 1.5rem;
  font-size: 0.85rem;
  color: var(--text-light);
}

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

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

.breadcrumbs span {
  margin: 0 0.5rem;
  user-select: none;
}

/* Modal overlay styling */
.compare-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
}

.compare-modal-overlay.hidden {
  display: none !important;
}

.compare-modal-content {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  border: 1px solid var(--border);
}

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

.compare-modal-header h3 {
  font-size: 1.4rem;
  font-family: var(--font-family-title);
  color: var(--dark);
}

.compare-modal-close {
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
}

.compare-modal-close:hover {
  color: var(--dark);
}

/* Mobile CTA Hide/Show Wrapper */
.mobile-cta-wrapper {
  display: none;
}

@media (max-width: 768px) {
  .mobile-cta-wrapper {
    display: block;
    width: 100%;
    text-align: center;
    margin-top: 1rem;
  }
  .mobile-cta-wrapper .header-cta {
    width: 100%;
  }
}

/* Hamburger active transformation animations */
.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 600px) {
  .compare-modal-content {
    padding: 1.2rem;
  }
}