/* ==========================================================================
   Nova AI Chat - Modern Design System & CSS Styling
   ========================================================================== */

/* --- CSS variables & Design Tokens --- */
:root {
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'Fira Code', Consolas, Monaco, monospace;

    /* Theme-independent colors */
    --white: #ffffff;
    --black: #000000;
    
    /* Layout properties */
    --sidebar-width: 280px;
    --header-height: 70px;
    --border-radius-sm: 8px;
    --border-radius-md: 14px;
    --border-radius-lg: 20px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Box shadows & glow effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.2);
}

/* --- Dark Theme Colors (Default) --- */
html[data-theme="dark"] {
    --bg-primary: #0a0d14;
    --bg-secondary: #111420;
    --bg-tertiary: #161b2a;
    --bg-glass: rgba(13, 17, 28, 0.65);
    --bg-glass-solid: rgba(22, 27, 42, 0.85);
    --bg-user-bubble: rgba(255, 255, 255, 0.05);
    --bg-ai-bubble: rgba(255, 255, 255, 0.02);
    
    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-focus: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --scrollbar-thumb: rgba(255, 255, 255, 0.1);
    
    --glass-blur: blur(16px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.06);
    --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* --- Light Theme Colors --- */
html[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-solid: rgba(248, 250, 252, 0.9);
    --bg-user-bubble: rgba(0, 0, 0, 0.05);
    --bg-ai-bubble: rgba(0, 0, 0, 0.02);
    
    --border-color: rgba(0, 0, 0, 0.06);
    --border-color-focus: rgba(0, 0, 0, 0.15);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --scrollbar-thumb: rgba(0, 0, 0, 0.15);
    
    --glass-blur: blur(16px);
    --glass-border: 1px solid rgba(0, 0, 0, 0.06);
    --glass-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

/* --- Accent Colors Engine --- */
html[data-accent="purple"] {
    --accent: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #a78bfa 0%, #7c3aed 100%);
    --accent-glow: rgba(139, 92, 246, 0.3);
    --accent-glow-subtle: rgba(139, 92, 246, 0.08);
    --accent-muted: #8b5cf61a;
}
html[data-accent="cyan"] {
    --accent: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #22d3ee 0%, #0891b2 100%);
    --accent-glow: rgba(6, 182, 212, 0.3);
    --accent-glow-subtle: rgba(6, 182, 212, 0.08);
    --accent-muted: #06b6d41a;
}
html[data-accent="emerald"] {
    --accent: #10b981;
    --accent-gradient: linear-gradient(135deg, #34d399 0%, #059669 100%);
    --accent-glow: rgba(16, 185, 129, 0.3);
    --accent-glow-subtle: rgba(16, 185, 129, 0.08);
    --accent-muted: #10b9811a;
}
html[data-accent="orange"] {
    --accent: #f97316;
    --accent-gradient: linear-gradient(135deg, #fb923c 0%, #ea580c 100%);
    --accent-glow: rgba(249, 115, 22, 0.3);
    --accent-glow-subtle: rgba(249, 115, 22, 0.08);
    --accent-muted: #f973161a;
}
html[data-accent="pink"] {
    --accent: #ec4899;
    --accent-gradient: linear-gradient(135deg, #f472b6 0%, #db2777 100%);
    --accent-glow: rgba(236, 72, 153, 0.3);
    --accent-glow-subtle: rgba(236, 72, 153, 0.08);
    --accent-muted: #ec48991a;
}

/* --- Base & Reset Rules --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) transparent;
}

html, body {
    width: 100%;
    height: 100%;
    font-family: var(--font-body);
    font-size: 15px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    text-decoration: underline;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

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

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

/* --- Layout Grid Wrapper --- */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* --- Sidebar Glassmorphism Styling --- */
.sidebar {
    width: var(--sidebar-width);
    height: 100%;
    background-color: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 20px;
    z-index: 100;
    transition: transform var(--transition-normal), background-color var(--transition-normal), border var(--transition-normal);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

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

.brand-logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: 0 0 15px var(--accent-glow);
}

.brand-logo i {
    width: 18px;
    height: 18px;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-close-btn {
    display: none; /* Desktop hidden */
}

/* New Chat Button */
.new-chat-btn {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.new-chat-btn:hover {
    border-color: var(--accent);
    background: var(--accent-glow-subtle);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-glow-subtle);
}

.new-chat-btn i {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.new-chat-btn:hover i {
    transform: rotate(90deg);
}

/* History Conversations List */
.history-section {
    flex: 1;
    margin-top: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-header {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    padding: 0 6px 6px;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.history-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 40px 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
}

.history-empty-state i {
    width: 24px;
    height: 24px;
    opacity: 0.5;
}

/* Chat Item Bubble in Sidebar */
.chat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    position: relative;
    user-select: none;
    overflow: hidden;
}

.chat-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.chat-item.active {
    background: var(--accent-glow-subtle);
    border-color: rgba(var(--accent), 0.15);
    color: var(--accent);
    font-weight: 500;
}

.chat-item-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.chat-item i {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.chat-item-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.chat-item-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.chat-item:hover .chat-item-actions,
.chat-item.active .chat-item-actions {
    opacity: 1;
}

.chat-item-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-muted);
    padding: 2px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.chat-item-btn:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

.chat-item-btn.delete-btn:hover {
    color: #ef4444;
}

/* Sidebar Footer */
.sidebar-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sidebar-footer-item {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--border-radius-md);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-footer-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-footer-item i {
    width: 18px;
    height: 18px;
}

/* Light / Dark Mode Toggle specifics */
html[data-theme="dark"] .sun-icon { display: block; }
html[data-theme="dark"] .moon-icon { display: none; }
html[data-theme="light"] .sun-icon { display: none; }
html[data-theme="light"] .moon-icon { display: block; }


/* --- Main Chat Area Layout --- */
.chat-area {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal);
}

/* Header Area */
.chat-header {
    height: var(--header-height);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    z-index: 90;
    transition: all var(--transition-normal);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.sidebar-toggle-btn {
    display: none; /* Show only on tablets/mobile */
}

.chat-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.chat-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Badge displaying the AI engine model */
.engine-badge {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
    border-radius: 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    margin-top: 2px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    animation: pulseGlow 2s infinite;
}

.badge-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.2px;
}

@keyframes pulseGlow {
    0% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(1); opacity: 0.5; }
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Icons styling */
.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.icon-btn i {
    width: 18px;
    height: 18px;
}

/* Export Dropdown Box */
.export-dropdown-container {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 220px;
    background-color: var(--bg-glass-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 6px;
    display: none;
    flex-direction: column;
    gap: 4px;
    z-index: 120;
    box-shadow: var(--glass-shadow);
    transform: translateY(10px);
    opacity: 0;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.dropdown-menu.show {
    display: flex;
    transform: translateY(0);
    opacity: 1;
}

.dropdown-item {
    border: none;
    background: transparent;
    padding: 10px 14px;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    width: 100%;
    text-align: left;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.dropdown-item i {
    width: 16px;
    height: 16px;
}


/* --- Messages Container Space --- */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Welcome/Hero Screen (Shown when empty) */
.welcome-screen {
    max-width: 800px;
    width: 100%;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.welcome-hero {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.welcome-logo {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: 0 0 30px var(--accent-glow);
    margin-bottom: 8px;
}

.welcome-logo i {
    width: 36px;
    height: 36px;
}

.welcome-hero h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-hero p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.6;
    max-width: 500px;
}

/* Suggestion prompt cards grid */
.suggestion-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.suggestion-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
    box-shadow: var(--shadow-sm);
}

.suggestion-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), 0 0 20px var(--accent-glow-subtle);
    background-color: var(--bg-tertiary);
}

.card-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--accent-muted);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.card-icon i {
    width: 18px;
    height: 18px;
}

.suggestion-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.suggestion-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Chat Transcript Elements */
.messages-list {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Message Bubble Wrapper */
.message-wrapper {
    display: flex;
    gap: 16px;
    animation: messageSlideIn var(--transition-normal);
}

@keyframes messageSlideIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-wrapper.user {
    justify-content: flex-end;
}

.message-wrapper.ai {
    justify-content: flex-start;
}

/* Avatars */
.bot-avatar {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--accent-gradient);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.bot-avatar i {
    width: 18px;
    height: 18px;
}

/* Bubble styling */
.message-bubble {
    max-width: 80%;
    padding: 14px 18px;
    border-radius: var(--border-radius-md);
    line-height: 1.6;
    font-size: 0.95rem;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.message-wrapper.user .message-bubble {
    background-color: var(--accent);
    color: var(--white);
    border-bottom-right-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.message-wrapper.ai .message-bubble {
    background-color: var(--bg-glass);
    border: var(--glass-border);
    color: var(--text-primary);
    border-top-left-radius: 4px;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

/* Markdown response rendering within AI bubbles */
.message-bubble p {
    margin-bottom: 12px;
}

.message-bubble p:last-child {
    margin-bottom: 0;
}

.message-bubble strong {
    font-weight: 700;
}

.message-bubble ul, .message-bubble ol {
    margin: 8px 0 12px 20px;
}

.message-bubble li {
    margin-bottom: 4px;
}

/* Code Snippet Styles inside bubbles */
.message-bubble code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background-color: rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    word-break: break-all;
}

/* Block code code snippets */
.code-block-container {
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background-color: #0b0e14;
    margin: 14px 0;
    overflow: hidden;
}

.code-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: #111420;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.code-block-header button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.code-block-header button:hover {
    color: var(--accent);
}

.code-block-header button i {
    width: 14px;
    height: 14px;
}

.code-block-container pre {
    margin: 0;
    padding: 16px;
    overflow-x: auto;
}

.code-block-container pre code {
    background-color: transparent !important;
    padding: 0 !important;
    border-radius: 0 !important;
    color: #e2e8f0;
    word-break: normal;
    white-space: pre;
    font-size: 0.85rem;
}

/* Generating / Typing Indicator Bubble */
.typing-indicator-wrapper {
    display: flex;
    gap: 16px;
    align-self: flex-start;
    animation: messageSlideIn var(--transition-normal);
}

.typing-indicator-wrapper.hidden {
    display: none;
}

.indicator-bubble {
    background-color: var(--bg-glass);
    border: var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 14px 22px;
    border-radius: var(--border-radius-md);
    border-top-left-radius: 4px;
    display: flex;
    align-items: center;
    gap: 5px;
    box-shadow: var(--shadow-sm);
}

.indicator-bubble .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    opacity: 0.4;
    animation: typingBlink 1.4s infinite both;
}

.indicator-bubble .dot:nth-child(2) {
    animation-delay: 0.2s;
}

.indicator-bubble .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBlink {
    0% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.15); }
    100% { opacity: 0.4; transform: scale(1); }
}


/* --- Footer Input Workspace Area --- */
.input-area {
    padding: 16px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.input-container-wrapper {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    position: relative;
}

.input-container {
    background-color: var(--bg-glass-solid);
    border: var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--glass-shadow), 0 0 25px var(--accent-glow-subtle);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 8px 8px 8px 16px;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    transition: all var(--transition-normal);
}

.input-container:focus-within {
    border-color: var(--accent);
    box-shadow: var(--glass-shadow), 0 0 35px var(--accent-glow);
}

.input-container textarea {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    line-height: 1.5;
    padding: 10px 0;
    resize: none;
    max-height: 200px;
    min-height: 24px;
}

.input-container textarea::placeholder {
    color: var(--text-muted);
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.action-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.action-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.action-btn i {
    width: 18px;
    height: 18px;
}

.action-btn.active {
    color: var(--accent);
    background: var(--accent-muted);
    animation: breathe 1.5s infinite;
}

@keyframes breathe {
    0% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(1); opacity: 0.8; }
}

/* Send Message Button styling */
.send-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-md);
    border: none;
    background: var(--accent-gradient);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 10px var(--accent-glow);
}

.send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 6px 15px var(--accent-glow);
}

.send-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.send-btn:disabled {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
}

.send-btn i {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.send-btn:hover:not(:disabled) i {
    transform: translate(2px, -2px);
}

.input-disclaimer {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}


/* --- Settings Modals Area Styling --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
}

.modal-container {
    width: 100%;
    max-width: 580px;
    background-color: var(--bg-secondary);
    border: var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.show .modal-container {
    transform: scale(1);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

/* Settings grouping */
.settings-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.settings-group h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.settings-group h3 i {
    width: 18px;
    height: 18px;
    color: var(--accent);
}

.form-control {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-control label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Settings Form Select inputs */
.form-control select,
.form-control input[type="text"],
.form-control input[type="password"] {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-fast);
}

.form-control select:focus,
.form-control input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow-subtle);
}

/* Password eye switcher toggle wrapper */
.password-input-wrapper {
    position: relative;
    display: flex;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: 48px !important;
}

.password-toggle {
    position: absolute;
    right: 4px;
    top: 4px;
    bottom: 4px;
    width: 40px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: color var(--transition-fast);
}

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

.password-toggle i {
    width: 18px;
    height: 18px;
}

.hidden {
    display: none !important;
}

.field-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.field-hint code {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: var(--font-mono);
}

/* Notice banners in settings */
.engine-info-note {
    background-color: var(--bg-tertiary);
    border-left: 3px solid var(--accent);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.engine-info-note i {
    width: 18px;
    height: 18px;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 1px;
}

/* Design Picker dots */
.accent-picker {
    display: flex;
    gap: 12px;
    align-items: center;
}

.accent-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.accent-dot:hover {
    transform: scale(1.1);
}

.accent-dot.active {
    transform: scale(1.1);
    box-shadow: 0 0 12px var(--dot-color);
}

.accent-dot.purple { background-color: #8b5cf6; --dot-color: rgba(139, 92, 246, 0.6); }
.accent-dot.cyan { background-color: #06b6d4; --dot-color: rgba(6, 182, 212, 0.6); }
.accent-dot.emerald { background-color: #10b981; --dot-color: rgba(16, 185, 129, 0.6); }
.accent-dot.orange { background-color: #f97316; --dot-color: rgba(249, 115, 22, 0.6); }
.accent-dot.pink { background-color: #ec4899; --dot-color: rgba(236, 72, 153, 0.6); }

.accent-dot.purple.active { border-color: rgba(255, 255, 255, 0.25); }
.accent-dot.cyan.active { border-color: rgba(255, 255, 255, 0.25); }
.accent-dot.emerald.active { border-color: rgba(255, 255, 255, 0.25); }
.accent-dot.orange.active { border-color: rgba(255, 255, 255, 0.25); }
.accent-dot.pink.active { border-color: rgba(255, 255, 255, 0.25); }

/* Danger Zone block styling */
.danger-zone {
    border: 1px dashed #ef4444;
    padding: 20px;
    border-radius: var(--border-radius-lg);
    background-color: rgba(239, 68, 68, 0.02);
}

.danger-zone h3 {
    border-bottom: none;
    color: #ef4444 !important;
}

.danger-zone h3 i {
    color: #ef4444 !important;
}

.danger-zone p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.danger-btn {
    border: 1px solid rgba(239, 68, 68, 0.3);
    background-color: rgba(239, 68, 68, 0.08);
    color: #ef4444;
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all var(--transition-fast);
}

.danger-btn:hover {
    background-color: #ef4444;
    color: var(--white);
    border-color: #ef4444;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.danger-btn i {
    width: 18px;
    height: 18px;
}

/* Modals Footers */
.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

/* General Button Styling */
.btn {
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    border: none;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--white);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px var(--accent-glow);
}


/* --- Mobile & Responsive Styling --- */
@media (max-width: 900px) {
    :root {
        --sidebar-width: 260px;
    }
    
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-close-btn {
        display: flex;
    }
    
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 95;
        display: none;
        opacity: 0;
        transition: opacity var(--transition-normal);
    }
    
    .sidebar-overlay.show {
        display: block;
        opacity: 1;
    }
    
    .sidebar-toggle-btn {
        display: flex;
    }
    
    .suggestion-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .messages-container {
        padding: 20px 16px;
    }
    
    .message-bubble {
        max-width: 90%;
    }
    
    .welcome-hero h2 {
        font-size: 1.8rem;
    }
    
    .chat-header {
        padding: 0 16px;
    }
    
    .input-area {
        padding: 10px 16px 16px;
    }
    
    .modal-container {
        max-height: 95vh;
    }
    
    .modal-body {
        padding: 16px;
    }
}

/* ==========================================================================
   Server Latency Status Monitor Styling
   ========================================================================== */
.status-section {
    border-top: 1px solid var(--border-color);
    padding: 15px 0 0;
    margin-top: auto; /* Push down to footer block area */
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.status-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-heading);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    padding: 0 4px;
}

.status-toggle-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.status-toggle-btn:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

.status-toggle-btn i {
    width: 13px;
    height: 13px;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.status-item {
    display: flex;
    align-items: center;
    padding: 8px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.status-item:hover {
    border-color: var(--border-color-focus);
    background: var(--bg-glass);
}

.status-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-muted);
    margin-right: 6px;
    flex-shrink: 0;
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.status-indicator.online {
    background-color: #10b981;
    box-shadow: 0 0 6px rgba(16, 185, 129, 0.6);
}

.status-indicator.slow {
    background-color: #f97316;
    box-shadow: 0 0 6px rgba(249, 115, 22, 0.6);
}

.status-indicator.offline {
    background-color: #ef4444;
    box-shadow: 0 0 6px rgba(239, 68, 68, 0.6);
}

.status-name {
    flex: 1;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.status-val {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
}

.status-item:hover .status-val {
    color: var(--text-primary);
}

/* ==========================================================================
   IR_NETLIFY VPN Generator Custom Styling
   ========================================================================== */
.form-control-row {
    display: flex;
    gap: 12px;
}

.text-action-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.text-action-btn:hover {
    color: var(--accent);
    background-color: var(--accent-muted);
}

.server-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
    max-height: 160px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px;
    background-color: var(--bg-tertiary);
}

.server-checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px 8px;
    border-radius: var(--border-radius-sm);
    background-color: rgba(255, 255, 255, 0.02);
    transition: all var(--transition-fast);
    user-select: none;
}

.server-checkbox-item:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.server-checkbox-item input {
    accent-color: var(--accent);
    cursor: pointer;
    width: 14px;
    height: 14px;
}

.advanced-settings-accordion {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
}

.advanced-settings-accordion summary {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none; /* Hide default arrow */
    user-select: none;
}

.advanced-settings-accordion summary::-webkit-details-marker {
    display: none; /* Hide webkit arrow */
}

.advanced-settings-accordion summary:hover {
    color: var(--text-primary);
}

.advanced-settings-accordion[open] summary {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 8px;
}

.form-control textarea {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    resize: vertical;
    transition: all var(--transition-fast);
}

.form-control textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow-subtle);
}

.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-border {
    border-color: #ef4444 !important;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.25) !important;
}

/* ==========================================================================
   Creator Announcement & Donation Card Premium Styling
   ========================================================================== */
.creator-announcement-card {
    direction: rtl;
    text-align: right;
    background: rgba(124, 58, 237, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(124, 58, 237, 0.25);
    border-radius: var(--border-radius-lg);
    padding: 22px;
    margin: 10px auto 30px auto;
    max-width: 900px;
    width: 100%;
    box-shadow: 0 8px 32px 0 rgba(124, 58, 237, 0.08);
    transition: all var(--transition-normal);
    box-sizing: border-box;
}

.creator-announcement-card:hover {
    border-color: rgba(124, 58, 237, 0.4);
    box-shadow: 0 12px 40px 0 rgba(124, 58, 237, 0.15);
    transform: translateY(-2px);
}

.announcement-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.announcement-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(124, 58, 237, 0.15);
    color: #c084fc;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    border: 1px solid rgba(124, 58, 237, 0.3);
}

.announcement-badge i {
    width: 14px;
    height: 14px;
}

.creator-tag {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.announcement-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.announcement-text {
    font-size: 0.92rem;
    line-height: 1.75;
    color: var(--text-primary);
    margin: 0;
}

.announcement-text strong {
    color: var(--accent);
    font-weight: 600;
}

.announcement-warning {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(249, 115, 22, 0.08);
    border: 1px solid rgba(249, 115, 22, 0.2);
    border-radius: var(--border-radius-md);
    padding: 14px;
    color: #fdba74;
    font-size: 0.85rem;
    line-height: 1.65;
    margin: 0;
}

.announcement-warning i {
    flex-shrink: 0;
    margin-top: 2px;
    color: #f97316;
    width: 18px;
    height: 18px;
}

.donation-section {
    margin-top: 8px;
}

.donation-section h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin: 0 0 12px 0;
    font-weight: 600;
}

.donation-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.donation-item {
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    transition: all var(--transition-fast);
}

.donation-item:hover {
    background: rgba(0, 0, 0, 0.25);
    border-color: rgba(124, 58, 237, 0.35);
}

.donation-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 10px;
}

.coin-name {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.3px;
}

.copy-addr-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: #c084fc;
    padding: 4px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-addr-btn:hover {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}

.addr-text {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    word-break: break-all;
    direction: ltr;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.03);
}














/* Unique Deployment Signature: b5ugm9gx */
:root {
    --rand-sig: "b5ugm9gx";
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --transition-fast: 0.19s;
}