/* ===== CSS Reset and Base Styles ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  padding-top: 70px;
}

/* ===== CSS Variables for Theme System ===== */
:root {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --header-bg: #1f1f1f;
  --container-bg: #1e1e1e;
  --border-color: #333;
  --accent-color: #4da3ff;
  --footer-bg: #1f1f1f;
  --nav-bg: #1a1a1a;
  --nav-border: #333;
  --card-bg: #1e1e1e;
  --shadow: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
  --bg-color: #f5f5f5;
  --text-color: #333;
  --header-bg: #ffffff;
  --container-bg: #ffffff;
  --border-color: #e0e0e0;
  --accent-color: #0073e6;
  --footer-bg: #f0f0f0;
  --nav-bg: #ffffff;
  --nav-border: #e0e0e0;
  --card-bg: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

/* ===== Top Navigation Bar ===== */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  z-index: 1000;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px var(--shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  margin-right: auto;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: #000;
  color: white;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  transition: all 0.3s ease;
  margin-right: 1rem;
}

[data-theme="light"] .logo-icon {
  background: #000;
  color: white;
}

.logo-icon:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.nav-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-title h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-color);
  margin: 0;
  letter-spacing: -0.02em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
  margin-right: 60px;
}

.theme-toggle-btn {
  background: var(--container-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 8px 15px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 5px;
}

.theme-toggle-btn:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-1px);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--nav-bg);
  border: 1px solid var(--border-color);
  cursor: pointer;
  padding: 8px;
  border-radius: 5px;
  transition: all 0.3s;
  z-index: 1004;
  position: fixed;
  right: 1rem;
  top: 15px;
  box-shadow: 0 2px 10px var(--shadow);
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
}

.menu-toggle:hover {
  background: var(--border-color);
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-color);
  transition: all 0.3s ease;
  border-radius: 1px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== Right Sidebar ===== */
.right-sidebar {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100vh;
  background: var(--nav-bg);
  border-left: 1px solid var(--nav-border);
  z-index: 1001;
  transition: right 0.3s ease;
  box-shadow: -5px 0 20px var(--shadow);
}

.right-sidebar.active {
  right: 0;
}

.sidebar-header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--nav-border);
  height: 70px;
  background: var(--nav-bg);
}

.sidebar-header h3 {
  color: var(--accent-color);
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}

.sidebar-menu {
  list-style: none;
  padding: 2rem 0;
  margin-top: 0;
}

.sidebar-menu li {
  margin: 0;
}

.sidebar-menu a {
  display: block;
  color: var(--text-color);
  text-decoration: none;
  padding: 1rem 2rem;
  font-weight: 500;
  transition: all 0.3s;
  border-left: 3px solid transparent;
}

.sidebar-menu a:hover {
  background: var(--border-color);
  border-left-color: var(--accent-color);
}

.sidebar-menu a.active {
  background: var(--accent-color);
  color: white;
  border-left-color: var(--accent-color);
}

.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

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

/* ===== Main Content Area ===== */
.main-content {
  min-height: calc(100vh - 70px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Headers ===== */
.hero-header {
  background: linear-gradient(135deg, var(--header-bg) 0%, var(--container-bg) 100%);
  padding: 8rem 0 6rem 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.hero-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(77, 163, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.page-header {
  background-color: var(--header-bg);
  padding: 4rem 0 2rem 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px var(--shadow);
}

.page-header h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.page-header p {
  font-size: 1.2rem;
  color: var(--text-color);
  opacity: 0.8;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--accent-color);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-color);
  opacity: 0.8;
  margin-bottom: 1rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}

.mvp-badge {
  display: inline-block;
  margin: 0.5rem auto 2rem auto;
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-color);
  background: var(--card-bg);
  border: 1px solid var(--accent-color);
}

.hero-accent {
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), transparent);
  margin: 0.75rem auto 0 auto;
  border-radius: 2px;
}

/* ===== Decentralization Section ===== */
.decentralization-section {
  padding: 8rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.decentralization-header {
  text-align: center;
  margin-bottom: 4rem;
}

.decentralization-header h2 {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.decentralization-header p {
  font-size: 1.3rem;
  color: var(--text-color);
  opacity: 0.9;
  max-width: 800px;
  margin: 0 auto 2rem auto;
}

.serverless-pill {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.decentralization-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.decentralization-card {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.decentralization-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
  box-shadow: 0 8px 32px var(--shadow);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.card-text {
  color: var(--text-color);
  opacity: 0.8;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.status-badge {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  align-self: flex-start;
}

.status-badge.mvp {
  background: var(--accent-color);
  color: white;
}

.status-badge.planned {
  background: var(--border-color);
  color: var(--text-color);
}

.title-star {
  color: var(--accent-color);
  font-weight: 700;
}

/* ===== Showcase Section ===== */
.talken-showcase {
  padding: 8rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-top: 4rem;
}

.showcase-item {
  background: var(--card-bg);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 32px var(--shadow);
  transition: transform 0.3s ease;
}

.showcase-item:hover {
  transform: translateY(-8px);
}

.showcase-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  font-size: 1.1rem;
  opacity: 0.7;
  overflow: hidden;
  position: relative;
  border-radius: 12px 12px 0 0;
  border: 1px solid var(--border-color);
  border-bottom: none;
}

.showcase-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: var(--bg-color);
}

.showcase-content {
  padding: 2rem;
}

.showcase-content h3 {
  color: var(--accent-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.showcase-content p {
  color: var(--text-color);
  opacity: 0.8;
  line-height: 1.6;
}

/* ===== Section Styles ===== */
.content {
  padding: 8rem 0;
}

.intro-section {
  padding: 6rem 0;
}

.features-section {
  padding: 10rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.about-section {
  padding: 10rem 0;
}

.section-title {
  font-size: 3.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--accent-color);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.section-description {
  font-size: 1.3rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem auto;
  line-height: 1.6;
  color: var(--text-color);
  opacity: 0.9;
}

.features-title {
  font-size: 2.5rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 5rem;
  color: var(--text-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-top: 4rem;
}

.feature-card {
  background: var(--card-bg);
  padding: 3rem 2.5rem;
  border-radius: 20px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 32px var(--shadow);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), transparent);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px var(--shadow);
  border-color: var(--accent-color);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 2rem;
  display: block;
}

.feature-card h4 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--accent-color);
}

.feature-card p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-color);
  opacity: 0.8;
}

.about-content {
  max-width: 1000px;
  margin: 0 auto;
}

.text-blocks {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-top: 4rem;
}

.text-block {
  font-size: 1.2rem;
  line-height: 1.8;
  padding: 2.5rem;
  background: var(--card-bg);
  border-radius: 15px;
  border-left: 4px solid var(--accent-color);
  box-shadow: 0 4px 20px var(--shadow);
}

/* ===== Download Section Styles ===== */
.download-section {
  margin-bottom: 6rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.2rem;
  color: var(--text-color);
  opacity: 0.8;
}

.celebration-banner {
  background: linear-gradient(135deg, var(--accent-color), rgba(77, 163, 255, 0.5));
  color: white;
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  font-size: 1.2rem;
  font-weight: 600;
  margin: 2rem 0 3rem 0;
  box-shadow: 0 8px 32px var(--shadow);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.download-card {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.download-card:hover:not(.coming-soon):not(.disabled) {
  transform: translateY(-5px);
  border-color: var(--accent-color);
  box-shadow: 0 8px 32px var(--shadow);
}

.download-card.featured {
  border: 2px solid var(--accent-color);
  position: relative;
}

.available-badge,
.coming-soon-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.4rem 0.8rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.available-badge {
  background: #00ff88;
  color: #000;
}

.coming-soon-badge {
  background: var(--accent-color);
  color: white;
}

.download-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.download-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.download-card p {
  color: var(--text-color);
  opacity: 0.8;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.download-details {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-color);
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.7;
}

.download-btn {
  padding: 12px 24px;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  font-size: 1rem;
}

.download-btn.primary {
  background: var(--accent-color);
  color: white;
}

.download-btn.primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.download-btn.disabled {
  background: var(--border-color);
  color: var(--text-color);
  cursor: not-allowed;
  opacity: 0.6;
}

.category-section {
  margin-bottom: 5rem;
}

.category-title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-color);
}

.store-logo {
  margin-bottom: 2rem;
}

.store-tagline {
  font-size: 1rem;
  color: var(--text-color);
  opacity: 0.8;
  margin-top: 0.5rem;
}

.store-info {
  background: var(--card-bg);
  padding: 3rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  margin-top: 4rem;
  text-align: center;
}

.store-info h3 {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.store-info p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
  opacity: 0.9;
  margin-bottom: 2rem;
}

.store-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.feature-icon {
  font-size: 2rem;
}

/* ===== About Developer Styles ===== */
.developer-intro {
  padding: 4rem 0;
  background: var(--container-bg);
  border-bottom: 1px solid var(--border-color);
}

.developer-profile {
  display: flex;
  align-items: center;
  gap: 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.profile-image-placeholder {
  flex-shrink: 0;
}

.profile-icon {
  width: 120px;
  height: 120px;
  background: var(--accent-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 700;
  box-shadow: 0 8px 32px var(--shadow);
}

.profile-info h2 {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.profile-title {
  font-size: 1.3rem;
  color: var(--text-color);
  opacity: 0.8;
  margin-bottom: 0.5rem;
}

.profile-location {
  font-size: 1.1rem;
  color: var(--text-color);
  opacity: 0.7;
}

.hardware-section {
  padding: 6rem 0;
  background: var(--bg-color);
}

.hardware-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hardware-card {
  background: var(--card-bg);
  padding: 3rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 32px var(--shadow);
  margin-top: 3rem;
}

.hardware-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.spec-item {
  background: var(--bg-color);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.spec-label {
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.7;
  margin-bottom: 0.5rem;
}

.spec-value {
  font-weight: 600;
  color: var(--accent-color);
}

.journey-timeline {
  padding: 6rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.timeline-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 4rem;
  align-items: flex-start;
}

.timeline-date {
  flex-shrink: 0;
  background: var(--accent-color);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 20px;
  font-weight: 600;
  min-width: 120px;
  text-align: center;
}

.timeline-content {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  flex: 1;
}

.timeline-content h3 {
  color: var(--accent-color);
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

.launched-badge,
.upcoming-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

.launched-badge {
  background: #00ff88;
  color: #000;
}

.upcoming-badge {
  background: var(--accent-color);
  color: white;
}

.projects-gallery {
  padding: 6rem 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.project-card {
  background: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  transition: transform 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
}

.project-image {
  width: 100%;
  height: 180px;
  background: var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  opacity: 0.7;
  font-size: 0.9rem;
  overflow: hidden;
  position: relative;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.project-info {
  padding: 1.5rem;
}

.project-info h4 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.project-info p {
  color: var(--text-color);
  opacity: 0.8;
  font-size: 0.9rem;
  line-height: 1.5;
}

.project-type {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 0.3rem 0.8rem;
  border-radius: 12px;
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.certifications-section {
  padding: 6rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.cert-item {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  text-align: center;
}

.cert-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cert-item h4 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.cert-count {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

.achievements-section {
  padding: 6rem 0;
}

.achievements {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.achievement-item {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.achievement-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-color);
}

.achievement-label {
  font-size: 1.1rem;
  color: var(--text-color);
  opacity: 0.8;
}

.achievement-link {
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease;
}

.achievement-link:hover {
  transform: translateY(-5px);
}

.skills-section {
  padding: 6rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.skill-category {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
}

.skill-category h3 {
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.skill-tag {
  background: var(--accent-color);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

.skill-tag.advanced {
  background: linear-gradient(135deg, var(--accent-color), #00ff88);
}

.skill-tag.basic {
  background: var(--border-color);
  color: var(--text-color);
}

.philosophy-section {
  padding: 6rem 0;
}

.philosophy-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.philosophy-card {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform 0.3s ease;
  box-shadow: 0 4px 20px var(--shadow);
}

.philosophy-card:hover {
  transform: translateY(-5px);
}

.philosophy-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.philosophy-card h3 {
  color: var(--accent-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.contact-section {
  padding: 6rem 0;
  background: var(--container-bg);
  border-top: 1px solid var(--border-color);
}

.contact-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-content > p {
  font-size: 1.2rem;
  margin-bottom: 3rem;
  opacity: 0.9;
}

.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
}

.contact-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.contact-info h4 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.contact-info p,
.contact-info a {
  color: var(--text-color);
  opacity: 0.8;
}

.cta-section {
  margin-top: 4rem;
  padding: 3rem;
  background: var(--card-bg);
  border-radius: 20px;
  border: 2px solid var(--accent-color);
  box-shadow: 0 8px 32px var(--shadow);
}

.cta-section h3 {
  color: var(--accent-color);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.cta-section p {
  margin-bottom: 2rem;
  opacity: 0.8;
}

.cta-button {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 12px 30px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.cta-button:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

/* ===== Legal Pages ===== */
.legal-content {
  background: var(--card-bg);
  padding: 3rem;
  border-radius: 15px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px var(--shadow);
}

.legal-content h2 {
  color: var(--accent-color);
  margin: 2rem 0 1rem 0;
  font-size: 1.8rem;
}

.legal-content h3 {
  color: var(--accent-color);
  margin: 1.5rem 0 0.8rem 0;
  font-size: 1.3rem;
}

.legal-content p,
.legal-content li {
  margin: 1rem 0;
  line-height: 1.8;
  opacity: 0.9;
}

.legal-content ul {
  margin-left: 2rem;
}

.privacy-highlight,
.terms-highlight {
  background: var(--bg-color);
  padding: 2.5rem;
  border-left: 4px solid var(--accent-color);
  border-radius: 10px;
  margin: 2.5rem 0;
}

.privacy-highlight h3,
.terms-highlight h3 {
  color: var(--accent-color);
  margin-bottom: 1rem;
}

/* ===== Footer ===== */
footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  margin-top: 6rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.footer-left p {
  margin: 0.5rem 0;
  font-size: 0.95rem;
  color: var(--text-color);
  opacity: 0.8;
}

.footer-left a {
  color: var(--accent-color);
  text-decoration: none;
  transition: all 0.3s;
}

.footer-left a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.tiny-footnote {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.7;
  margin-top: 2rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  body {
    padding-top: 70px;
  }

  .nav-title {
    display: none;
  }

  .nav-actions {
    margin-right: 50px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

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

  .section-description {
    font-size: 1.1rem;
  }

  .features-grid,
  .showcase-grid,
  .skills-grid,
  .cert-grid,
  .download-grid,
  .projects-grid,
  .decentralization-grid {
    grid-template-columns: 1fr;
  }

  .developer-profile {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .timeline-item {
    flex-direction: column;
    gap: 1rem;
  }

  .timeline-date {
    min-width: auto;
  }

  .contact-methods {
    grid-template-columns: 1fr;
  }

  .contact-item {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .container {
    padding: 0 1rem;
  }

  .feature-card,
  .download-card,
  .decentralization-card {
    padding: 1.5rem;
  }

  .download-details {
    flex-direction: column;
    gap: 0.5rem;
  }
}