/* Cấu hình biến màu sắc HSL nâng cao */
:root {
    --bg-app: #090a0f;
    --bg-sidebar: #0f111a;
    --bg-card: #151926;
    --bg-card-hover: #1c2234;
    --border-color: #232a3f;
    --border-color-active: #3b476b;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #7c3aed; /* Tím */
    --color-primary-glow: rgba(124, 58, 237, 0.15);
    --color-accent: #06b6d4;  /* Cyan */
    --color-accent-glow: rgba(6, 182, 212, 0.2);
    --color-success: #10b981; /* Xanh lá */
    --color-success-glow: rgba(16, 185, 129, 0.15);
    --color-error: #ef4444;   /* Đỏ */
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow: hidden;
    height: 100vh;
}

/* Layout chính */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* SIDEBAR */
.sidebar {
    width: 320px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 10;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.logo h2 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.setting-card, .info-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    transition: var(--transition-smooth);
}

.setting-card:hover {
    border-color: var(--border-color-active);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.setting-card h3, .info-card h3 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.setting-card h3 i {
    color: var(--color-primary);
}

.info-card h3 i {
    color: var(--color-accent);
}

.setting-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.input-group label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.input-group textarea {
    width: 100%;
    min-height: 110px;
    background-color: rgba(9, 10, 15, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 13px;
    line-height: 1.5;
    resize: vertical;
    transition: var(--transition-smooth);
}

.input-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.password-wrapper {
    position: relative;
    display: flex;
}

.password-wrapper input {
    width: 100%;
    background-color: rgba(9, 10, 15, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 40px 10px 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition-smooth);
}

.password-wrapper input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.password-wrapper button {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-wrapper button:hover {
    color: var(--text-primary);
}

/* Buttons */
.btn {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    background-color: #8b5cf6;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.btn-accent {
    background-color: var(--color-accent);
    color: #090a0f;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.btn-accent:hover {
    background-color: #22d3ee;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.btn-block {
    width: 100%;
}

/* Status badge */
.status-badge {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    padding: 8px 12px;
    border-radius: 8px;
    background-color: rgba(9, 10, 15, 0.4);
    border: 1px solid var(--border-color);
}

.status-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-connected {
    border-color: rgba(16, 185, 129, 0.3);
}

.status-connected .dot {
    background-color: var(--color-success);
    box-shadow: 0 0 10px var(--color-success-glow);
}

.status-disconnected {
    border-color: rgba(239, 68, 110, 0.3);
}

.status-disconnected .dot {
    background-color: var(--color-error);
}

.info-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
}

.info-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.info-card li {
    font-size: 12px;
    color: var(--text-secondary);
    position: relative;
    padding-left: 16px;
}

.info-card li::before {
    content: "•";
    color: var(--color-accent);
    position: absolute;
    left: 4px;
    font-weight: bold;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-footer p {
    font-size: 11px;
    color: var(--text-muted);
}

/* MAIN CONTENT */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-app);
    height: 100vh;
    overflow: hidden;
}

/* Header & Tabs */
.main-header {
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
}

.tabs {
    display: flex;
    height: 100%;
    gap: 8px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 500;
    padding: 0 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    height: 100%;
    position: relative;
    transition: var(--transition-smooth);
}

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

.tab-btn.active {
    color: var(--color-accent);
    font-weight: 600;
}

.tab-btn.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary), var(--color-accent));
    box-shadow: 0 -2px 10px var(--color-accent-glow);
}

/* Tab Panels */
.tab-content-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 32px 40px;
}

.tab-panel {
    display: none;
    flex-direction: column;
    gap: 24px;
    animation: fadeIn 0.4s ease-out;
}

.tab-panel.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-header h1 {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, white, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.panel-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Hộp Tìm Kiếm / Nhập Link */
.action-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.search-box {
    display: flex;
    align-items: center;
    position: relative;
    background-color: rgba(9, 10, 15, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 4px 4px 4px 48px;
    transition: var(--transition-smooth);
}

.search-box:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.search-icon {
    position: absolute;
    left: 18px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 15px;
    padding: 12px 8px;
}

.search-box input:focus {
    outline: none;
}

.search-box button {
    border-radius: 8px;
    padding: 10px 24px;
}

/* Vùng hiển thị kết quả */
.result-container {
    flex: 1;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    min-height: 350px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-muted);
    flex: 1;
    text-align: center;
    max-width: 400px;
    margin: 40px auto;
}

.empty-state i {
    width: 64px;
    height: 64px;
    stroke-width: 1.25px;
    color: var(--border-color-active);
}

.empty-state p {
    font-size: 14px;
    line-height: 1.6;
}

/* Skeleton Loading */
.skeleton-loader {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
}

.skeleton-line {
    background: linear-gradient(90deg, #181d2e 25%, #252d47 50%, #181d2e 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

.skeleton-line.title {
    height: 32px;
    width: 40%;
}

.skeleton-line.short {
    height: 18px;
    width: 20%;
    margin-bottom: 12px;
}

.skeleton-line.paragraph {
    height: 14px;
    width: 100%;
}

.skeleton-line.paragraph:nth-child(4) {
    width: 90%;
}

.skeleton-line.paragraph:nth-child(5) {
    width: 75%;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Kết quả Markdown */
.result-display {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    animation: fadeIn 0.4s ease-out;
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.badge {
    background-color: var(--color-success-glow);
    color: var(--color-success);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-icon {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.btn-icon:hover {
    background-color: var(--border-color-active);
    color: var(--text-primary);
}

/* Cấu trúc Markdown */
.markdown-body {
    line-height: 1.7;
    font-size: 15px;
    color: var(--text-primary);
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    font-family: var(--font-heading);
    margin-top: 24px;
    margin-bottom: 12px;
    font-weight: 600;
}

.markdown-body h1 { font-size: 22px; color: var(--color-accent); }
.markdown-body h2 { font-size: 19px; color: #a78bfa; border-bottom: 1px solid var(--border-color); padding-bottom: 6px; }
.markdown-body h3 { font-size: 16px; }

.markdown-body p {
    margin-bottom: 16px;
    color: #cbd5e1;
}

.markdown-body ul, .markdown-body ol {
    margin-bottom: 16px;
    padding-left: 20px;
}

.markdown-body li {
    margin-bottom: 8px;
    color: #cbd5e1;
}

.markdown-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding: 8px 16px;
    background-color: rgba(124, 58, 237, 0.05);
    border-radius: 4px;
    margin-bottom: 16px;
    font-style: italic;
    color: var(--text-secondary);
}

.markdown-body code {
    background-color: #1a1e2d;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 14px;
    color: #38bdf8;
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-active);
    border-left: 4px solid var(--color-accent);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
    animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}