static/style.css

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-app: #f8fafc;
    --bg-sidebar: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', system-ui, sans-serif; background: var(--bg-app); color: var(--text-main); height: 100vh; overflow: hidden; }

.app-container { display: flex; height: 100vh; }

/* Sidebar */
.sidebar { width: 350px; background: var(--bg-sidebar); border-right: 1px solid var(--border); padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 1.5rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }

.upload-box { border: 2px dashed var(--border); border-radius: 12px; padding: 30px 20px; text-align: center; transition: all 0.3s; cursor: pointer; }
.upload-box:hover { border-color: var(--primary); background: #f0f7ff; }
.upload-label { cursor: pointer; display: flex; flex-direction: column; gap: 8px; color: var(--text-muted); }
.upload-label i { font-size: 2rem; color: var(--primary); }

.preview-card { position: relative; margin-top: 10px; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); }
#imagePreview { width: 100%; display: block; max-height: 200px; object-fit: contain; background: #000; }
.badge { position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.7); color: white; padding: 4px 10px; border-radius: 20px; font-size: 0.7rem; }

.ocr-text-container { margin-top: 15px; font-size: 0.85rem; }
#extractedText { background: #f1f5f9; padding: 12px; border-radius: 8px; height: 120px; overflow-y: auto; color: var(--text-muted); margin-top: 5px; border: 1px solid var(--border); line-height: 1.4; }

/* Chat Area */
.chat-area { flex: 1; display: flex; flex-direction: column; position: relative; }
.chat-header { padding: 20px 30px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: white; }
.chat-log { flex: 1; padding: 10px; overflow-y: auto; display: flex; flex-direction: column; gap: 20px; }

.message { max-width: 80%; padding: 12px 16px; border-radius: 12px; line-height: 1.5; font-size: 0.95rem; }
.message.system { align-self: center; background: #f1f5f9; color: var(--text-muted); font-size: 0.8rem; }
.message.user { align-self: flex-end; background: var(--primary); color: white; border-bottom-right-radius: 2px; }
.message.assistant { align-self: flex-start; background: white; border: 1px solid var(--border); border-bottom-left-radius: 2px; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }

/* Input */
.input-container { padding: 30px; background: linear-gradient(transparent, var(--bg-app) 20%); }
.input-wrapper { display: flex; gap: 12px; background: white; padding: 8px; border-radius: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.08); border: 1px solid var(--border); }
input[type="text"] { flex: 1; border: none; padding: 10px 15px; outline: none; font-size: 1rem; }
button#btnEnviar { background: var(--primary); color: white; border: none; width: 45px; height: 45px; border-radius: 12px; cursor: pointer; transition: 0.3s; }
button#btnEnviar:disabled { background: var(--border); cursor: not-allowed; }
button#btnEnviar:hover:not(:disabled) { background: var(--primary-hover); transform: scale(1.05); }

.hidden { display: none; }
.btn-icon { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.1rem; }
.btn-icon:hover { color: #ef4444; }