:root {
     --bg: #0f172a;
     --card: #111827;
     --text: #e5e7eb;
     --muted: #9ca3af;
     --accent: #38bdf8;
     --success: #22c55e;
     --danger: #ef4444;
     --gradient-start: #1e293b;
     --gradient-end: #334155;
}

* {
     box-sizing: border-box;
}

body {
     margin: 0;
     font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
     background: linear-gradient(135deg, #020617, #020617);
     color: var(--text);
     min-height: 100vh;
     display: flex;
     align-items: center;
     justify-content: center;
     padding: 20px;
}

.card {
     width: 100%;
     max-width: 1000px;
     background: var(--card);
     border-radius: 16px;
     padding: 32px;
     box-shadow: 0 20px 40px rgba(0, 0, 0, .6);
}

h1,
h2,
h3 {
     margin-top: 0;
}

h1 {
     font-size: 2rem;
     margin-bottom: 8px;
     background: linear-gradient(135deg, var(--accent), #06b6d4);
     -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     background-clip: text;
}

.subtitle {
     color: var(--muted);
     margin-bottom: 24px;
     line-height: 1.6;
}

input {
     width: 100%;
     padding: 14px;
     border-radius: 10px;
     border: 2px solid #334155;
     outline: none;
     font-size: 1rem;
     margin-bottom: 12px;
     background: #1e293b;
     color: var(--text);
     transition: border-color 0.3s ease;
}

input:focus {
     border-color: var(--accent);
}

button {
     width: 100%;
     padding: 14px;
     border-radius: 10px;
     border: none;
     background: linear-gradient(135deg, var(--accent), #06b6d4);
     color: #020617;
     font-size: 1rem;
     font-weight: bold;
     cursor: pointer;
     transition: all 0.3s ease;
}

button:hover {
     transform: translateY(-2px);
     box-shadow: 0 10px 25px rgba(56, 189, 248, 0.3);
}

button:active {
     transform: translateY(0);
}

.error {
     color: var(--danger);
     margin-top: 12px;
     display: none;
     padding: 12px;
     background: rgba(239, 68, 68, 0.1);
     border-radius: 8px;
     border-left: 4px solid var(--danger);
}

.success {
     color: var(--success);
}

.content {
     display: none;
}

.footer {
     margin-top: 40px;
     font-size: .85rem;
     color: var(--muted);
     text-align: center;
     padding-top: 20px;
     border-top: 1px solid #334155;
}

.indice {
     display: grid;
     grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
     gap: 20px;
     margin-top: 32px;
     padding-top: 32px;
     border-top: 2px solid #334155;
}

.indice-card {
     background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
     border: 2px solid transparent;
     border-radius: 12px;
     padding: 24px;
     cursor: pointer;
     transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
     position: relative;
     overflow: hidden;
     display: flex;
     align-items: center;
     gap: 16px;
     min-height: 100px;
}

.indice-card::before {
     content: '';
     position: absolute;
     top: 0;
     left: -100%;
     width: 100%;
     height: 100%;
     background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.1), transparent);
     transition: left 0.5s ease;
}

.indice-card:hover::before {
     left: 100%;
}

.indice-card:hover {
     border-color: var(--accent);
     transform: translateY(-4px);
     box-shadow: 0 12px 30px rgba(56, 189, 248, 0.2);
}

.indice-card:active {
     transform: translateY(-2px);
}

.indice-icon {
     font-size: 2.5rem;
     min-width: 50px;
     text-align: center;
     flex-shrink: 0;
}

.indice-card h3 {
     margin: 0;
     font-size: 1.15rem;
     color: var(--text);
     line-height: 1.4;
     position: relative;
     z-index: 1;
     word-break: break-word;
}

.conteudo-visualizacao {
     margin-top: 32px;
     animation: fadeIn 0.3s ease-in-out;
}

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

     to {
          opacity: 1;
          transform: translateY(0);
     }
}

.btn-voltar {
     width: auto;
     padding: 12px 24px;
     margin-bottom: 24px;
     background: rgba(56, 189, 248, 0.1);
     border: 2px solid var(--accent);
     color: var(--accent);
     font-size: 0.95rem;
     font-weight: 600;
     display: inline-flex;
     align-items: center;
     gap: 8px;
}

.btn-voltar:hover {
     background: var(--accent);
     color: #020617;
     transform: translateX(-4px);
}

.btn-voltar-final {
     margin-top: 48px;
     margin-bottom: 0;
}

.titulo-conteudo {
     font-size: 2.2rem;
     margin-bottom: 24px;
     padding-bottom: 16px;
     border-bottom: 2px solid #334155;
     line-height: 1.3;
     word-break: break-word;
     background: linear-gradient(135deg, var(--accent), #06b6d4);
     -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     background-clip: text;
}

.loading {
     text-align: center;
     padding: 60px 20px;
     color: var(--muted);
     font-size: 1.1rem;
     animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

     0%,
     100% {
          opacity: 0.6;
     }

     50% {
          opacity: 1;
     }
}

.markdown-content {
     line-height: 1.7;
     color: var(--text);
}

.markdown-content h1,
.markdown-content h2 {
     color: var(--accent);
     margin-top: 2em;
     margin-bottom: 0.8em;
     line-height: 1.3;
}

.markdown-content h1 {
     font-size: 2em;
     border-bottom: 1px solid rgba(56, 189, 248, 0.3);
     padding-bottom: 0.3em;
}

.markdown-content h2 {
     font-size: 1.5em;
     border-bottom: 1px solid rgba(56, 189, 248, 0.2);
     padding-bottom: 0.3em;
}

.markdown-content h3 {
     color: #60a5fa;
     font-size: 1.25em;
     margin-top: 1.5em;
     margin-bottom: 0.6em;
}

.markdown-content h4 {
     color: #93c5fd;
     font-size: 1.1em;
     margin-top: 1.2em;
     margin-bottom: 0.5em;
}

.markdown-content h5,
.markdown-content h6 {
     color: #93c5fd;
     font-size: 1em;
     margin-top: 1em;
     margin-bottom: 0.5em;
}

.markdown-content p {
     margin-bottom: 1em;
     line-height: 1.7;
}

.markdown-content ul,
.markdown-content ol {
     margin: 1em 0;
     padding-left: 2em;
}

.markdown-content li {
     margin: 0.5em 0;
     line-height: 1.7;
}

.markdown-content code {
     background: rgba(56, 189, 248, 0.1);
     color: #a5f3fc;
     padding: 0.2em 0.4em;
     border-radius: 3px;
     font-size: 0.9em;
     font-family: 'Courier New', Courier, monospace;
}

.markdown-content pre {
     background: #020617;
     border: 1px solid #1e293b;
     border-radius: 8px;
     padding: 1em;
     margin: 1.5em 0;
     overflow-x: auto;
}

.markdown-content pre code {
     background: transparent;
     padding: 0;
     border-radius: 0;
     display: block;
     line-height: 1.5;
}

.markdown-content a {
     color: var(--accent);
     text-decoration: none;
     border-bottom: 1px solid transparent;
     transition: border-color 0.2s;
}

.markdown-content a:hover {
     border-bottom-color: var(--accent);
}

.markdown-content blockquote {
     margin: 1.5em 0;
     padding: 0.8em 1.2em;
     border-left: 4px solid var(--accent);
     background: rgba(56, 189, 248, 0.05);
     border-radius: 4px;
}

.markdown-content blockquote p {
     margin: 0;
}

.markdown-content hr {
     border: none;
     border-top: 2px solid #334155;
     margin: 2em 0;
}

.markdown-content table {
     border-collapse: collapse;
     width: 100%;
     margin: 1.5em 0;
     overflow-x: auto;
     display: block;
}

.markdown-content thead {
     background: #1e293b;
}

.markdown-content th {
     padding: 0.8em;
     text-align: left;
     border-bottom: 2px solid var(--accent);
     color: var(--accent);
     font-weight: 600;
}

.markdown-content td {
     padding: 0.8em;
     border-bottom: 1px solid #334155;
}

.markdown-content tbody tr:hover {
     background: rgba(56, 189, 248, 0.05);
}

.markdown-content img {
     max-width: 100%;
     height: auto;
     border-radius: 8px;
     margin: 1em 0;
}

.markdown-content strong {
     color: var(--accent);
     font-weight: 600;
}

.markdown-content em {
     font-style: italic;
     color: #d1d5db;
}

@media (max-width: 768px) {
     body {
          padding: 16px;
          align-items: flex-start;
          padding-top: 32px;
     }

     .card {
          padding: 24px;
     }

     h1 {
          font-size: 1.6rem;
     }

     .subtitle {
          font-size: 0.95rem;
     }

     .indice {
          grid-template-columns: 1fr;
          gap: 16px;
     }

     .indice-card {
          padding: 20px;
          min-height: 90px;
     }

     .indice-icon {
          font-size: 2.2rem;
     }

     .indice-card h3 {
          font-size: 1.05rem;
     }

     .titulo-conteudo {
          font-size: 1.6rem;
     }

     .markdown-content h1 {
          font-size: 1.6em;
     }

     .markdown-content h2 {
          font-size: 1.3em;
     }

     .markdown-content h3 {
          font-size: 1.1em;
     }

     .markdown-content pre {
          padding: 0.8em;
     }

     .markdown-content code {
          font-size: 0.85em;
     }
}

@media (max-width: 480px) {
     body {
          padding: 12px;
          padding-top: 24px;
     }

     .card {
          padding: 20px;
     }

     h1 {
          font-size: 1.4rem;
     }

     .subtitle {
          font-size: 0.9rem;
     }

     input,
     button {
          padding: 12px;
          font-size: 0.95rem;
     }

     .indice {
          gap: 12px;
     }

     .indice-card {
          padding: 16px;
          min-height: 80px;
          gap: 12px;
     }

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

     .indice-card h3 {
          font-size: 0.95rem;
     }

     .btn-voltar {
          width: 100%;
          justify-content: center;
          padding: 12px 20px;
          font-size: 0.9rem;
     }

     .titulo-conteudo {
          font-size: 1.4rem;
     }

     .markdown-content h1 {
          font-size: 1.4em;
     }

     .markdown-content h2 {
          font-size: 1.2em;
     }

     .markdown-content h3 {
          font-size: 1.05em;
     }

     .markdown-content ul,
     .markdown-content ol {
          padding-left: 1.5em;
     }

     .markdown-content pre {
          padding: 0.7em;
     }

     .markdown-content code {
          font-size: 0.8em;
     }

     .markdown-content table {
          font-size: 0.9em;
     }

     .markdown-content th,
     .markdown-content td {
          padding: 0.6em;
     }

     .footer {
          font-size: 0.8rem;
     }
}