:root {
    --primary-color: #2563eb;  /* Azul principal */
    --primary-light: #60a5fa;  /* Azul claro */
    --secondary-color: #e0f2fe;  /* Azul muito claro */
    --text-color: #1f2937;
    --text-color-light: #6b7280;
    --border-color: #bfdbfe;
    --success-color: #10b981;
    --error-color: #ef4444;
    --background-color: #ffffff;
    --message-bg-user: #2563eb;
    --message-bg-bot: #e0f2fe;
    --shadow-color: rgba(37, 99, 235, 0.1);
    --card-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.1), 0 2px 4px -1px rgba(37, 99, 235, 0.06);
    --hover-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.1), 0 4px 6px -2px rgba(37, 99, 235, 0.05);
}

[data-theme="dark"] {
    --primary-color: #60a5fa;
    --primary-light: #93c5fd;
    --secondary-color: #1f2937;
    --text-color: #e0f2fe;
    --text-color-light: #9ca3af;
    --border-color: #374151;
    --background-color: #111827;
    --message-bg-user: #2563eb;
    --message-bg-bot: #1f2937;
    --shadow-color: rgba(37, 99, 235, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s, transform 0.2s;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Utility Classes */
.hidden {
    display: none;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-color-light);
}

/* Header padrão reutilizável */
.clara-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    border-radius: 0 0 16px 16px;
}

.clara-header .logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.clara-header .logo-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
}

.clara-header .logo-icon i {
    font-size: 1.25rem;
    color: white;
}

.clara-header .clara-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0 2rem;
    flex: 1;
    text-align: center;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.08);
}

.clara-header .header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(8px);
}

.user-info span {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.95;
}
.clara-header .header-controls .user-info {
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.95;
    background: rgba(255,255,255,0.10);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    margin-right: 0.5rem;
}

.clara-header .header-controls button {
    background: rgba(255,255,255,0.15);
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.5rem;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s, color 0.3s, transform 0.2s;
}

.clara-header .header-controls button:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.05) rotate(15deg);
}

/* Remover estilos de seleção de tema */
.theme-toggle,
.theme-toggle-btn {
    display: none !important;
}