:root {
    /* Helix Premium Neon Dark Palette */
    --bg-dark: #050609;
    --bg-card: rgba(16, 18, 24, 0.75);
    --bg-sidebar: #090a0d;
    --bg-input: rgba(26, 29, 38, 0.7);
    --border-color: rgba(255, 255, 255, 0.07);
    --border-focus: #00d4ff;
    
    --primary: #ffffff;
    --primary-blue: #00d4ff; /* Neon Cyan */
    --primary-blue-hover: #33ddff;
    --primary-purple: #a855f7; /* Neon Purple */
    --primary-purple-hover: #bc7af9;
    
    --neon-gradient: linear-gradient(135deg, #00d4ff, #a855f7);
    --neon-gradient-hover: linear-gradient(135deg, #33ddff, #bc7af9);
    --neon-glow: 0 0 16px rgba(0, 212, 255, 0.35), 0 0 32px rgba(168, 85, 247, 0.2);
    
    --text-primary: #ffffff;
    --text-secondary: #9aa0b0;
    --text-muted: #5e6475;
    
    --danger: #ff3b30;
    --danger-glow: 0 0 12px rgba(255, 59, 48, 0.3);
    --success: #00e676;
    --success-glow: 0 0 12px rgba(0, 230, 118, 0.3);
    --warning: #ffb300;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Custom Premium Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--neon-gradient);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* App Container Layout */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(168, 85, 247, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 40%);
}

/* Sidebar Styling - Helix Neon Minimalist */
.sidebar {
    width: 270px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 32px 24px;
    z-index: 10;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    padding-left: 4px;
}

.logo-area svg {
    color: #00d4ff;
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.5));
    animation: logo-glow 3s ease-in-out infinite alternate;
}

.logo-area h1 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff 30%, #00d4ff 70%, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 8px rgba(0, 212, 255, 0.15));
}

@keyframes logo-glow {
    0% { filter: drop-shadow(0 0 4px rgba(0,212,255,0.4)); }
    100% { filter: drop-shadow(0 0 12px rgba(168,85,247,0.7)) color(#a855f7); color: #a855f7; }
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 12px;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.nav-item svg {
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.03);
}

.nav-item:hover svg {
    color: #00d4ff;
}

.nav-item.active {
    color: var(--text-primary);
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.15);
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.04);
}

.nav-item.active svg {
    color: #00d4ff;
    filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.6));
}

.sidebar-footer {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    padding-left: 4px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 100px;
    letter-spacing: 0.2px;
    transition: var(--transition-fast);
}

.status-offline {
    background: rgba(255, 59, 48, 0.08);
    color: var(--danger);
    border: 1px solid rgba(255, 59, 48, 0.15);
    box-shadow: var(--danger-glow);
}

.status-online {
    background: rgba(0, 230, 118, 0.08);
    color: var(--success);
    border: 1px solid rgba(0, 230, 118, 0.15);
    box-shadow: var(--success-glow);
}

/* Main Workspace Styling */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-dark);
    overflow-y: auto;
}

/* Content Header with Actions & Subnav */
.content-header {
    padding: 24px 40px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(5, 6, 9, 0.5);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 5;
}

.header-left-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.header-title-wrapper h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.header-title-wrapper p {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-top: 4px;
    font-weight: 400;
}

.header-subnav-pills {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.subnav-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-fast);
}

.subnav-pill:hover {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.header-right-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.profile-info-pill {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.2px;
}

/* Tab Content */
.tab-content-container {
    padding: 40px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    width: 100%;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Grid Layouts */
.grid-layout {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 28px;
    align-items: start;
}

.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}

/* Premium Glassmorphism Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(16px);
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.15), rgba(168, 85, 247, 0.15), transparent);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.35);
}

.card.flex-column {
    display: flex;
    flex-direction: column;
}

.card h3 {
    color: var(--text-primary);
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.3px;
    margin-bottom: 8px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-bottom: 28px;
    line-height: 1.5;
}

/* Form inputs - Premium Fields */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-wrapper label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

input[type="text"], input[type="password"], input[type="number"], textarea, select {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='%239aa0b0' height='20' viewBox='0 0 24 24' width='20' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--border-focus);
    background: rgba(26, 29, 38, 0.9);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.2), inset 0 2px 4px rgba(0,0,0,0.05);
}

select option {
    background-color: #090a0d !important;
    color: var(--text-primary) !important;
}

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

.range-inputs input {
    flex-grow: 1;
}

.range-inputs span {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Custom Premium Checkbox (Switch Toggle Style) */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
    position: relative;
    cursor: pointer;
}

.checkbox-wrapper input[type="checkbox"],
.checkbox-wrapper input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 38px;
    height: 20px;
    cursor: pointer;
    z-index: 2;
    margin: 0;
}

/* Modern switch slider */
.checkbox-wrapper::before {
    content: '';
    display: inline-block;
    width: 38px;
    height: 20px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-wrapper::after {
    content: '';
    position: absolute;
    left: 3px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    background: #9aa0b0;
    border-radius: 50%;
    transition: var(--transition-fast);
}

/* Switch Checked States */
.checkbox-wrapper:has(input[type="checkbox"]:checked)::before,
.checkbox-wrapper:has(input[type="radio"]:checked)::before {
    background: rgba(0, 212, 255, 0.15);
    border-color: rgba(0, 212, 255, 0.4);
}

.checkbox-wrapper:has(input[type="checkbox"]:checked)::after,
.checkbox-wrapper:has(input[type="radio"]:checked)::after {
    left: 21px;
    background: #00d4ff;
    box-shadow: 0 0 8px #00d4ff;
}

.checkbox-wrapper label {
    font-size: 0.88rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 500;
    user-select: none;
}

/* Premium Buttons Styling */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Primary Button - Sleek White Accent */
.btn-primary {
    background: var(--primary);
    color: #050609;
}

.btn-primary:hover:not(:disabled) {
    background: #eef0f5;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Secondary Button - Glass Dark accent */
.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

/* Premium Neon Gradient buttons (Launch action buttons) */
.btn-neon-gradient {
    background: var(--neon-gradient);
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.25);
    position: relative;
    z-index: 1;
}

.btn-neon-gradient::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--neon-gradient-hover);
    border-radius: 12px;
    z-index: -1;
    opacity: 0;
    transition: var(--transition-fast);
}

.btn-neon-gradient:hover:not(:disabled) {
    transform: translateY(-1.5px) scale(1.02);
    box-shadow: var(--neon-glow);
}

.btn-neon-gradient:hover:not(:disabled)::before {
    opacity: 1;
}

.btn-neon-gradient:active:not(:disabled) {
    transform: translateY(0) scale(1.0);
}

/* Primary Neon Solid Cyan Button */
.btn-primary-neon {
    background: #00d4ff;
    color: #050609;
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.2);
}

.btn-primary-neon:hover:not(:disabled) {
    background: #33ddff;
    transform: translateY(-1.5px) scale(1.02);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.4);
}

/* Secondary Neon Border Button */
.btn-secondary-neon {
    background: rgba(0, 212, 255, 0.03);
    color: #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.btn-secondary-neon:hover:not(:disabled) {
    background: rgba(0, 212, 255, 0.08);
    border-color: #00d4ff;
    transform: translateY(-1px);
}

.btn-danger-neon {
    background: rgba(255, 59, 48, 0.03);
    color: var(--danger);
    border: 1px solid rgba(255, 59, 48, 0.3);
}

.btn-danger-neon:hover:not(:disabled) {
    background: rgba(255, 59, 48, 0.08);
    border-color: var(--danger);
    transform: translateY(-1px);
    box-shadow: var(--danger-glow);
}

/* Tiny Button */
.btn-tiny {
    padding: 8px 14px;
    font-size: 0.72rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
}

.btn-tiny:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn:disabled {
    opacity: 0.25;
    cursor: not-allowed;
    box-shadow: none !important;
    transform: none !important;
}

.button-group {
    display: flex;
    gap: 12px;
}

/* Pulsing effect for running state */
.btn-pulse {
    animation: btnPulse 2s infinite alternate;
}

@keyframes btnPulse {
    0% { box-shadow: 0 4px 12px rgba(0, 212, 255, 0.2); }
    100% { box-shadow: 0 4px 24px rgba(168, 85, 247, 0.5); }
}

/* Preview / Screenshot Area */
.preview-box {
    margin-top: 24px;
    height: 240px;
    background: rgba(0, 0, 0, 0.3);
    border: 1.5px dashed var(--border-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: var(--transition-fast);
}

.preview-box.border-glow {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.05);
}

.preview-placeholder {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    text-align: center;
    padding: 20px;
}

#screenshot-preview {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

/* Terminal / Log Output styling */
.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.terminal {
    flex-grow: 1;
    background: #06070a;
    border: 1px solid var(--border-color);
    border-top: 2px solid var(--primary-purple); /* Glowing purple top line */
    border-radius: 14px;
    padding: 20px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 0.78rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 420px;
    max-height: 480px;
    box-shadow: inset 0 8px 16px rgba(0,0,0,0.5);
}

.term-line {
    word-break: break-all;
    line-height: 1.5;
    font-weight: 500;
}

.term-system { color: #00d4ff; text-shadow: 0 0 8px rgba(0, 212, 255, 0.3); }
.term-info { color: #9aa0b0; }
.term-success { color: #00e676; text-shadow: 0 0 8px rgba(0, 230, 118, 0.3); }
.term-error { color: #ff3b30; text-shadow: 0 0 8px rgba(255, 59, 48, 0.3); }
.term-warning { color: #ffb300; text-shadow: 0 0 8px rgba(255, 179, 0, 0.3); }

/* Spinners */
.spinner {
    animation: rotate 2s linear infinite;
    width: 16px;
    height: 16px;
}

.spinner .path {
    stroke: #050609;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

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

@keyframes dash {
    0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

.hidden {
    display: none !important;
}

.margin-top {
    margin-top: 15px;
}

/* Drag drop uploader */
.drag-drop-area {
    border: 1.5px dashed var(--border-color);
    border-radius: 14px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.02);
}

.drag-drop-area:hover {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.02);
    box-shadow: inset 0 0 12px rgba(0, 212, 255, 0.05);
}

.drag-drop-area svg {
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.drag-drop-area:hover svg {
    color: #00d4ff;
    filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.4));
}

.drag-drop-area p {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.video-list {
    margin-top: 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    min-height: 80px;
}

.empty-list-text {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
    display: block;
}

/* Stats specific styling - clean grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    position: relative;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.15), transparent);
}

.stat-title {
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.8px;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.table-container {
    overflow-x: auto;
    margin-top: 20px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-card);
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.stats-table th {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.72rem;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.8px;
    background: rgba(255,255,255,0.01);
}

.stats-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.stats-table tr:last-child td {
    border-bottom: none;
}

.stats-table tr:hover td {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.01);
}

/* Custom Frameless Titlebar Styling */
.titlebar {
    height: 32px;
    background: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    user-select: none;
    -webkit-app-region: drag; /* Window dragging */
    z-index: 9999;
    position: relative;
    box-sizing: border-box;
}

.titlebar-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.titlebar-logo svg {
    color: #00d4ff;
    filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.4));
}

.titlebar-drag-spacer {
    flex-grow: 1;
    height: 100%;
}

.titlebar-controls {
    display: flex;
    height: 100%;
    align-items: center;
    -webkit-app-region: no-drag; /* Exclude buttons from dragging */
}

.titlebar-btn {
    width: 46px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.titlebar-btn-close:hover {
    background: var(--danger) !important;
    color: #ffffff !important;
}

/* Adjust application container layout for titlebar */
.app-container {
    height: calc(100vh - 32px); /* Subtract titlebar height */
    overflow: hidden;
}

/* Premium Floating Toast Notifications */
.toast-container {
    position: fixed;
    top: 48px; /* Below title bar */
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 99999;
    pointer-events: none;
}

.toast {
    background: rgba(10, 12, 17, 0.88);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 20px;
    min-width: 320px;
    max-width: 420px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(24px);
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text-primary);
    font-size: 0.82rem;
    font-weight: 500;
    pointer-events: auto;
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
    opacity: 0;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-success {
    border-left: 3px solid var(--success);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 16px rgba(0, 230, 118, 0.12);
}

.toast-error {
    border-left: 3px solid var(--danger);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 16px rgba(255, 59, 48, 0.12);
}

.toast-info {
    border-left: 3px solid #00d4ff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 16px rgba(0, 212, 255, 0.12);
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-message {
    flex-grow: 1;
    line-height: 1.4;
}

/* Global Headless Toggle Button */
#global-headless-toggle {
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}
#global-headless-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
#global-headless-toggle:active {
    transform: translateY(0);
}

/* HELIX LANDINGS BUILDER & SIMULATOR STYLES */
.theme-preset-btn {
    transition: var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.theme-preset-btn:hover {
    border-color: rgba(255, 255, 255, 0.3) !important;
    transform: translateY(-2px);
}
.theme-preset-btn.active {
    border-color: var(--accent-color) !important;
    box-shadow: 0 0 12px var(--accent-color);
}

/* Builder Link Edit Row */
.builder-link-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    padding: 10px;
    transition: var(--transition-fast);
}
.builder-link-row:hover {
    border-color: rgba(255,255,255,0.12);
    background: rgba(255, 255, 255, 0.04);
}
.builder-link-row input, .builder-link-row select {
    background: var(--bg-input);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-primary);
    padding: 8px;
    border-radius: 6px;
    font-size: 0.8rem;
}
.builder-link-row input[type="text"] {
    flex-grow: 1;
}

/* Mobile Simulator themes mapping */
#preview-simulator-viewport {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Theme: glass-dark simulator */
#preview-simulator-viewport.theme-glass-dark {
    --card-bg-solid: #0d1423;
    background: #080c14;
    background-image: radial-gradient(circle at top left, rgba(0, 82, 212, 0.15), transparent 60%),
                      radial-gradient(circle at bottom right, rgba(110, 13, 208, 0.15), transparent 60%);
}
#preview-simulator-viewport.theme-glass-dark .sim-btn {
    background: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
    color: #fff;
    box-shadow: 0 4px 10px rgba(0, 114, 255, 0.2);
}
#preview-simulator-viewport.theme-glass-dark .sim-btn.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: none;
}

/* Theme: sunset-glow simulator */
#preview-simulator-viewport.theme-sunset-glow {
    --card-bg-solid: #1a0c2f;
    background: radial-gradient(circle at top, #2b1055, #0f051d);
    background-image: radial-gradient(circle at 50% -20%, rgba(255, 81, 47, 0.3), transparent 70%);
}
#preview-simulator-viewport.theme-sunset-glow #sim-title {
    background: linear-gradient(to right, #ffffff, #ffd269);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
#preview-simulator-viewport.theme-sunset-glow #sim-avatar-container {
    border-color: rgba(255, 81, 47, 0.3);
}
#preview-simulator-viewport.theme-sunset-glow .sim-btn {
    background: linear-gradient(135deg, #ff512f 0%, #dd2476 100%);
    color: #fff;
    box-shadow: 0 4px 10px rgba(221, 36, 118, 0.25);
}
#preview-simulator-viewport.theme-sunset-glow .sim-btn.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid rgba(255, 81, 47, 0.2);
    box-shadow: none;
}

/* Theme: cyber-neon simulator */
#preview-simulator-viewport.theme-cyber-neon {
    --card-bg-solid: #0a0a0c;
    background: #030303;
    background-image: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), 
                      linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.02));
    background-size: 100% 4px, 6px 100%;
}
#preview-simulator-viewport.theme-cyber-neon #sim-title {
    color: #00ffff;
    text-shadow: 0 0 8px rgba(0,255,255,0.6);
    font-family: monospace;
}
#preview-simulator-viewport.theme-cyber-neon #sim-subtitle {
    color: #00ffff;
    opacity: 0.7;
    font-family: monospace;
}
#preview-simulator-viewport.theme-cyber-neon #sim-avatar-container {
    background: #000;
    border-color: #ff007f;
    color: #ff007f;
    text-shadow: 0 0 6px #ff007f;
    font-family: monospace;
}
#preview-simulator-viewport.theme-cyber-neon .sim-btn {
    background: #000;
    border: 1.5px solid #ff007f;
    color: #ff007f;
    box-shadow: 0 0 8px rgba(255, 0, 127, 0.15);
    font-family: monospace;
    font-size: 12px;
}
#preview-simulator-viewport.theme-cyber-neon .sim-btn.btn-secondary {
    background: #000;
    border: 1.5px solid #00ffff;
    color: #00ffff;
    box-shadow: 0 0 8px rgba(0, 255, 255, 0.15);
    font-family: monospace;
    font-size: 12px;
}

/* Theme: emerald-mint simulator */
#preview-simulator-viewport.theme-emerald-mint {
    --card-bg-solid: #0e1c18;
    background: linear-gradient(135deg, #09201a 0%, #050e0c 100%);
    background-image: radial-gradient(circle at top left, rgba(56, 239, 125, 0.1), transparent 60%);
}
#preview-simulator-viewport.theme-emerald-mint #sim-title {
    color: #e6fffa;
    font-family: serif;
    font-style: italic;
}
#preview-simulator-viewport.theme-emerald-mint #sim-subtitle {
    color: #8caba3;
}
#preview-simulator-viewport.theme-emerald-mint #sim-avatar-container {
    background: linear-gradient(135deg, #11998e, #38ef7d);
}
#preview-simulator-viewport.theme-emerald-mint .sim-btn {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: #09201a;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(56, 239, 125, 0.15);
}
#preview-simulator-viewport.theme-emerald-mint .sim-btn.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    color: #38ef7d;
    border: 1px solid rgba(56, 239, 125, 0.2);
    box-shadow: none;
}

/* Simulator Buttons styling */
.sim-btn {
    width: 100%;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    text-decoration: none;
    box-sizing: border-box;
}

/* Mobile Simulator avatar fallback layout */
#preview-simulator-viewport img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}
#preview-simulator-viewport .avatar-img {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.1);
}
#preview-simulator-viewport .avatar-fallback {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
}

/* Simulator Background image header styling */
#sim-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 180px;
    background-size: cover;
    background-position: center top;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
    display: none;
}
#sim-header-bg.active {
    display: block;
}
#sim-header-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to bottom, transparent 35%, var(--card-bg-solid) 100%),
                linear-gradient(to right, var(--card-bg-solid) 0%, transparent 20%, transparent 80%, var(--card-bg-solid) 100%);
}

#sim-avatar-container, #sim-title, #sim-subtitle, #sim-links-container {
    position: relative;
    z-index: 2;
}

/* Custom styling for Смарт-лендинг checkbox */
input#use_landing_bridge {
    display: inline-block !important;
    opacity: 1 !important;
    position: static !important;
    pointer-events: auto !important;
    width: 14px !important;
    height: 14px !important;
    margin: 0 !important;
}

.landing-bridge-toggle-wrapper {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
}

.landing-bridge-toggle-wrapper:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
}

.landing-bridge-toggle-wrapper:has(input#use_landing_bridge:checked) {
    background: rgba(0, 212, 255, 0.12) !important;
    border: 1px solid rgba(0, 212, 255, 0.35) !important;
    color: #00d4ff !important;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.08);
}

/* Simulator Visual Layout Modes & Banner Buttons */
#preview-simulator-viewport.layout-visual {
    padding-top: 0px !important;
    padding-left: 0px !important;
    padding-right: 0px !important;
}
#preview-simulator-viewport.layout-visual #sim-header-bg {
    position: relative;
    display: block;
    height: 180px;
    margin-bottom: 10px;
    width: 100%;
    background-size: cover;
    background-position: center 50%;
    background-repeat: no-repeat;
}
#preview-simulator-viewport.layout-visual #sim-avatar-container {
    display: none !important;
}
#preview-simulator-viewport.layout-visual #sim-title {
    margin-top: 10px;
    color: #ffffff;
    text-shadow: 0 2px 6px rgba(0,0,0,0.4);
    position: relative;
    z-index: 5;
    padding-left: 16px;
    padding-right: 16px;
}
#preview-simulator-viewport.layout-visual #sim-username {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.75);
    text-shadow: 0 1px 4px rgba(0,0,0,0.4);
    position: relative;
    z-index: 5;
    padding-left: 16px;
    padding-right: 16px;
}
#preview-simulator-viewport.layout-visual #sim-subtitle {
    padding-left: 16px;
    padding-right: 16px;
    margin-bottom: 12px !important;
}
#preview-simulator-viewport.layout-visual .sim-btn {
    width: calc(100% - 32px);
    margin-left: 16px;
    margin-right: 16px;
}

#sim-username {
    font-size: 12px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.45);
    margin-top: 2px;
    margin-bottom: 15px;
    text-align: center;
}

.sim-btn-banner {
    width: calc(100% - 32px);
    margin: 0 16px 12px 16px;
    aspect-ratio: 16 / 9;
    border-radius: 16px; /* Rounded corners */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
    display: block;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    border: 1.5px solid rgba(255,255,255,0.12);
}
.sim-banner-watermark {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
}
.sim-banner-watermark svg {
    width: 11px;
    height: 11px;
    fill: currentColor;
    color: inherit;
}
.sim-banner-text-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 8px 8px 8px;
    background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.6) 60%, transparent 100%);
    text-align: center;
    font-weight: 700;
    font-size: 11px;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.6);
}