:root {
  --bg-color: #0b0c10;
  --panel-bg: rgba(22, 26, 37, 0.45);
  --panel-border: rgba(255, 255, 255, 0.08);
  --accent-color: #00f0ff;
  --accent-glow: rgba(0, 240, 255, 0.25);
  --secondary-color: #a370f7;
  --text-primary: #f5f6f8;
  --text-secondary: #8f9aa8;
  --error-color: #ff4a5a;
  --success-color: #10b981;
}

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

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

.glow-bg {
  position: absolute;
  top: -10%;
  left: 20%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, var(--accent-glow) 0%, rgba(163, 112, 247, 0.05) 50%, rgba(0,0,0,0) 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-color);
  text-shadow: 0 0 10px var(--accent-glow);
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.hero-section {
  text-align: center;
  max-width: 800px;
  margin: 2rem auto 0 auto;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.2rem;
  background: linear-gradient(135deg, #ffffff 40%, var(--accent-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 300;
}

.showcase-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.tabs-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  background: var(--panel-bg);
  padding: 0.4rem;
  border-radius: 30px;
  border: 1px solid var(--panel-border);
  align-self: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.6rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent-color);
  box-shadow: inset 0 0 1px rgba(255,255,255,0.2);
}

.content-cards {
  position: relative;
  min-height: 400px;
}

.showcase-card {
  display: none;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 3rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  transition: opacity 0.5s ease-in-out;
}

.showcase-card.active {
  display: grid;
  animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.2rem;
}

.card-text h2 {
  font-size: 2rem;
  font-weight: 600;
}

.card-text p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1.05rem;
  font-weight: 300;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.feature-list li::before {
  content: "✦";
  color: var(--accent-color);
}

.card-image-wrapper {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--panel-border);
  position: relative;
  aspect-ratio: 1.33 / 1;
}

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

.showcase-card:hover .showcase-img {
  transform: scale(1.03);
}

/* Buttons */
.btn {
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  font-family: inherit;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--panel-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary {
  background: var(--accent-color);
  color: #050608;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  background: #33f3ff;
  box-shadow: 0 6px 18px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--panel-border);
  margin-top: auto;
  z-index: 10;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 6, 8, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

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

.glassmorphism {
  background: rgba(16, 20, 30, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255,255,255,0.1);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.modal-content {
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
  padding: 2.5rem;
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1.2rem;
  background: transparent;
  border: none;
  font-size: 1.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-header {
  margin-bottom: 2rem;
  text-align: center;
}

.modal-header h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.modal-header p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 300;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-group input {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
}

.form-group input:focus {
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.15);
}

/* Messages */
.message-container {
  margin-top: 1.2rem;
  padding: 0.8rem;
  border-radius: 8px;
  font-size: 0.9rem;
  text-align: center;
  display: none;
}

.message-container.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--success-color);
  color: #34d399;
}

.message-container.error {
  display: block;
  background: rgba(255, 74, 90, 0.15);
  border: 1px solid var(--error-color);
  color: #ff6b76;
}

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

/* Responsive */
@media (max-width: 900px) {
  .showcase-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }
  
  .card-image-wrapper {
    order: -1;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
}

@media (max-width: 600px) {
  header {
    padding: 1rem;
  }
  
  main {
    padding: 1rem;
    gap: 2.5rem;
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .tabs-container {
    flex-direction: column;
    border-radius: 16px;
    width: 100%;
  }
  
  .tab-btn {
    width: 100%;
    text-align: center;
  }
}

/* Authentication Status Panel */
.auth-controls {
  display: flex;
  align-items: center;
}

.auth-status-panel {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn 0.3s ease;
}

.status-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--success-color);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success-color);
  animation: pulseGlow 2s infinite ease-in-out;
}

.status-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: #a7f3d0;
}

.btn-logout {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 400;
  cursor: pointer;
  text-decoration: underline;
  margin-left: 0.5rem;
  font-family: inherit;
  transition: color 0.2s ease;
}

.btn-logout:hover {
  color: var(--text-primary);
}

@keyframes pulseGlow {
  0%, 100% {
    opacity: 0.6;
    transform: scale(0.9);
  }
  50% {
    opacity: 1;
    transform: scale(1.15);
    box-shadow: 0 0 12px var(--success-color);
  }
}