/* macOS Style Variables */
:root {
   /* --macos-bg: #f5f5f7;*/
    --macos-sidebar: #ffffff;
    --macos-card: #ffffff;
    --macos-text: #1d1d1f;
    --macos-text-secondary: #86868b;
    --macos-primary: #007aff;
    --macos-border: #e5e5e7;
    --macos-hover: #f5f5f7;
    --macos-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --macos-radius: 12px;
    --macos-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth transitions */
.copyright-container,
.chat-input-container {
    transition: all 0.3s ease;
}

/* macOS Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", sans-serif;
    background: var(--macos-bg);
    color: var(--macos-text);
    line-height: 1.4;
}

/* Đảm bảo không có khoảng trống giữa các component */
.perplexity-layout {
    overflow: hidden;
}

.sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--macos-sidebar);
    border-right: 1px solid var(--macos-border);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--macos-bg);
}

.top-navbar {
    height: 60px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--macos-border);
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: #a8a8a8;
    }

/* macOS Utilities */
.macos-glass {
   /* background: rgba(255, 255, 255, 0.8);*/
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--macos-border);
}

.macos-shadow {
    box-shadow: var(--macos-shadow);
}

.macos-radius {
    border-radius: var(--macos-radius);
}

.macos-transition {
    transition: var(--macos-transition);
}

/* Text styles */
.text-macos-primary {
    color: var(--macos-primary);
}

.text-macos-secondary {
    color: var(--macos-text-secondary);
}

.bg-macos-card {
    background: var(--macos-card);
}

/* Custom macOS Button Styles */
.btn-macos {
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: var(--macos-transition);
}

.btn-macos-primary {
    background: var(--macos-primary);
    /*color: white;*/
}

    .btn-macos-primary:hover {
        background: #0066cc;
        transform: translateY(-1px);
    }

/* macOS Input Styles */
.macos-input {
    border: 1px solid var(--macos-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    background: var(--macos-card);
    transition: var(--macos-transition);
}

    .macos-input:focus {
        outline: none;
        border-color: var(--macos-primary);
        box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
    }
/* Thêm vào file CSS chính */
.form-control:focus {
    border-color: var(--macos-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
    outline: none;
}

.btn:focus {
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
    outline: none;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .chat-input-container {
        left: 0 !important;
        padding: 1rem !important;
    }

    .macos-chat-input {
        border-radius: 16px !important;
    }

    .btn-attachment {
        height: 60px !important;
    }

        .btn-attachment span {
            font-size: 0.7rem !important;
        }
}


/* Đảm bảo content area scroll properly */
.content-area {
    scroll-padding-bottom: 100px;
}

/* Đảm bảo copyright luôn hiển thị đúng */
.copyright-container {
    will-change: transform;
    backface-visibility: hidden;
}

/* Tránh conflict với các element khác */
.main-content {
    isolation: isolate;
}

.copyright-container {
    z-index: 950; /* Tăng z-index lên một chút */
}

.chat-input-container {
    z-index: 1000; /* Vẫn cao hơn copyright */
}