/* PulseChat - Estilos Completos */

/* Variables CSS */
:root {
  --background: #0a0a0a;
  --foreground: #fafafa;
  --card: #0f0f0f;
  --card-foreground: #fafafa;
  --primary: #22c55e;
  --primary-foreground: #052e16;
  --secondary: #262626;
  --muted: #262626;
  --muted-foreground: #a3a3a3;
  --border: #262626;
  --radius: 0.5rem;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

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

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

.logo-icon {
  width: 2rem;
  height: 2rem;
  color: var(--primary);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'Space Grotesk', sans-serif;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  color: var(--muted-foreground);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: color 0.2s;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.btn-primary:hover {
  opacity: 0.9;
}

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

.btn-outline:hover {
  background: var(--secondary);
}

.btn-ghost {
  background: transparent;
  color: var(--foreground);
}

.btn-ghost:hover {
  background: var(--secondary);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  padding: 0.5rem;
  background: transparent;
  border: none;
  color: var(--foreground);
  cursor: pointer;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.btn-icon:hover {
  background: var(--secondary);
}

/* Hero */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at top, rgba(34, 197, 94, 0.15) 0%, transparent 50%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 56rem;
  margin: 0 auto;
  animation: fadeIn 0.6s ease-out;
}

.hero-title {
  font-size: 3.75rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

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

.hero-description {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

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

/* Features */
.features {
  padding: 5rem 0;
}

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

.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  transition: all 0.2s;
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  background: rgba(34, 197, 94, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--muted-foreground);
}

/* Models */
.models {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.model-card {
  padding: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  transition: all 0.2s;
}

.model-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.model-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.model-card h3 {
  font-size: 1.25rem;
}

.badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: rgba(34, 197, 94, 0.1);
  color: var(--primary);
  border-radius: 999px;
}

.model-provider {
  color: var(--muted-foreground);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.rating {
  color: #fbbf24;
  font-size: 1rem;
}

/* CTA */
.cta {
  padding: 5rem 0;
}

.cta-card {
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
  padding: 3rem;
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: 1rem;
  background: rgba(34, 197, 94, 0.05);
}

.cta-card h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-card p {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
}

/* Footer */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  margin-top: 5rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--muted-foreground);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Chat Container */
.chat-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.sidebar-title {
  font-size: 1.25rem;
}

.conversations {
  flex: 1;
  overflow-y: auto;
  margin-top: 1rem;
}

.sidebar-footer {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* Chat Main */
.chat-main {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

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

.chat-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.chat-title {
  font-weight: 500;
}

.chat-subtitle {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.model-select {
  padding: 0.5rem 1rem;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--foreground);
  font-size: 0.875rem;
}

/* Messages */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 2rem 1rem;
}

.starter-prompts {
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
  padding: 3rem 0;
}

.starter-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.category-btn {
  padding: 1.5rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.category-btn:hover {
  border-color: var(--primary);
  background: var(--secondary);
}

.category-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.category-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: #FFF;
}

.prompts-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 42rem;
  margin: 0 auto;
}

.prompt-btn {
  padding: 1rem 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--foreground);
}

.prompt-btn:hover {
  border-color: var(--primary);
  background: var(--secondary);
}

.message {
  max-width: 700px;
  margin: 0 auto 1.5rem;
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
}

.message.user {
  background: var(--primary);
  color: var(--primary-foreground);
  margin-left: auto;
}

.message.assistant {
  background: var(--secondary);
  border: 1px solid var(--border);
}

.message pre {
  white-space: pre-wrap;
  word-wrap: break-word;
}

.typing-indicator {
  display: flex;
  gap: 0.25rem;
  padding: 1rem;
}

.typing-dot {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--muted-foreground);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; }
  30% { opacity: 1; }
}

/* Chat Input */
.chat-input-container {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--card);
}

.chat-input-form {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
}

.chat-input {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--foreground);
  font-size: 0.875rem;
}

.chat-input:focus {
  outline: none;
  border-color: var(--primary);
}

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

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .chat-container {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    width: 280px;
    z-index: 100;
    transition: left 0.3s;
  }
  
  .sidebar.open {
    left: 0;
  }
  
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background);
}

::-webkit-scrollbar-thumb {
  background: var(--muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--muted-foreground);
}