/* ==========================================================================
   OmniTools - Premium Core Stylesheet
   ========================================================================== */

/* Design Tokens */
:root {
    --bg-dark: #0b0d19;
    --bg-sidebar: #0f1225;
    --bg-header: rgba(15, 18, 37, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Harmonious Harmonized Colors */
    --primary: #00f2fe;
    --primary-glow: rgba(0, 242, 254, 0.35);
    --secondary: #4facfe;
    --success: #00e676;
    --success-glow: rgba(0, 230, 118, 0.2);
    --danger: #ff1744;
    
    /* Text shades */
    --text-main: #f1f3f9;
    --text-muted: #8b92b6;
    --text-dark: #0b0d19;
    
    /* Shadows & Effects */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-blur: blur(12px);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glow-shadow: 0 0 20px var(--primary-glow);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.w-100 {
    width: 100%;
}

.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-end { align-items: flex-end; }
.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}
.flex-center-column {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.text-success { color: var(--success) !important; }

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

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

/* Sidebar Navigation */
.app-sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 100;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.logo-icon {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glow-shadow);
}

.logo-icon i {
    color: var(--text-dark);
    width: 18px;
    height: 18px;
}

.brand-logo span {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.4rem;
    background: linear-gradient(to right, #ffffff, #8b92b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.nav-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin: 1.5rem 0.5rem 0.5rem 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}

.nav-item i {
    width: 20px;
    height: 20px;
}

.nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.03);
}

.nav-item.active {
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    font-weight: 600;
    box-shadow: var(--glow-shadow);
}

.sidebar-footer {
    margin-top: auto;
}

.privacy-badge {
    background-color: rgba(0, 230, 118, 0.05);
    border: 1px solid rgba(0, 230, 118, 0.15);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success);
    font-size: 0.8rem;
    font-weight: 600;
}

.privacy-badge i {
    width: 16px;
    height: 16px;
}

/* Main Body Wrapper */
.main-wrapper {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-width: 0;
}

/* Header Area */
.app-header {
    height: 70px;
    background-color: var(--bg-header);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 99;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
}

.header-search {
    position: relative;
    width: 320px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 16px;
    height: 16px;
}

.header-search input {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.6rem 1rem 0.6rem 2.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.header-search input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
}

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

.header-action-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Content Area Viewport */
.content-viewport {
    padding: 2rem;
    flex-grow: 1;
    overflow-y: auto;
}

/* Tab Panels Switching */
.tab-panel {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hero Section (Dashboard) */
.hero-section {
    padding: 3rem;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.05), rgba(79, 172, 254, 0.02));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 2.5rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-section h1 {
    font-size: 2.8rem;
    line-height: 1.1;
    background: linear-gradient(to right, #ffffff, #00f2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.hero-section .subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.stat-badge {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.stat-badge i {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background-color: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.tool-card-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.tool-card-icon i {
    width: 24px;
    height: 24px;
    color: var(--text-dark);
}

.qr-gradient { background: linear-gradient(135deg, #00f2fe, #4facfe); }
.compress-gradient { background: linear-gradient(135deg, #f857a6, #ff5858); }
.css-gradient { background: linear-gradient(135deg, #11998e, #38ef7d); }
.finance-gradient { background: linear-gradient(135deg, #ffd200, #f7971e); }

.tool-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.tool-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.tool-action-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.tool-card:hover .tool-action-link {
    gap: 0.75rem;
}

.tool-action-link i {
    width: 16px;
    height: 16px;
}

/* Glassmorphism Card Style */
.glass-card {
    background-color: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

/* Tool Panel Details Header */
.panel-header {
    margin-bottom: 2rem;
}

.panel-header h2 {
    font-size: 2.2rem;
    background: linear-gradient(to right, #ffffff, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.panel-header p {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Grid Layout for Workspaces */
.grid-2 {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 900px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* Controls Components */
.control-group {
    margin-bottom: 1.5rem;
}

.control-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.small-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.form-control {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
}

/* Color Picker Styling Wrapper */
.color-picker-wrapper {
    display: flex;
    gap: 0.5rem;
}

.color-picker-wrapper input[type="color"] {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: none;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}
.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.hex-text {
    flex-grow: 1;
    text-align: center;
    font-family: monospace;
    letter-spacing: 0.05em;
}

/* Sliders */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary-glow);
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text-dark);
    box-shadow: var(--glow-shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 25px var(--primary-glow);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(255, 255, 255, 0.04);
}

/* File Upload Zone */
.file-upload-zone {
    border: 2px dashed var(--border-color);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.1);
}

.file-upload-zone:hover {
    border-color: var(--primary);
    background-color: rgba(0, 242, 254, 0.02);
}

.large-upload-icon {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.file-upload-zone:hover .large-upload-icon {
    color: var(--primary);
    transform: scale(1.1);
}

.file-upload-zone span {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.file-size-limit {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.hidden-file-input {
    display: none;
}

/* Control Tab Controls */
.control-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.control-tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

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

.control-tab-btn.active {
    color: var(--primary);
}

.control-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
    box-shadow: var(--glow-shadow);
}

.control-subpanel {
    display: none;
}

.control-subpanel.active {
    display: block;
}

/* Preview Output Blocks */
.workspace-preview {
    min-height: 400px;
    position: relative;
    border: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.2);
}

/* QR Preview Canvas */
.qr-output-wrapper {
    background: #ffffff;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.qr-canvas-holder canvas {
    max-width: 100%;
    height: auto;
}

/* Logo Preview styling inside controls */
.logo-preview-box {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.logo-preview-box img {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background-color: #ffffff;
    padding: 0.25rem;
}

.remove-logo-btn {
    background: none;
    border: none;
    color: var(--danger);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
}

/* Image Compressor preview holders */
.compress-preview-wrapper {
    width: 100%;
    flex-grow: 1;
    position: relative;
    min-height: 260px;
}

.compress-preview-wrapper img {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.empty-preview-state {
    color: var(--text-muted);
    text-align: center;
}

.empty-preview-state i {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    stroke-width: 1px;
}

/* Compression Stat boxes */
.compress-stat-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr 1fr;
    align-items: center;
    gap: 0.5rem;
}

.stat-box {
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.stat-box span {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.stat-box strong {
    font-size: 1.05rem;
}

.arrow-box {
    background: none;
    border: none;
    padding: 0;
}

.arrow-box i {
    color: var(--text-muted);
}

/* Simulation Preview (Glass Card) */
.simulated-glass-card {
    width: 320px;
    height: 190px;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.card-chip {
    width: 40px;
    height: 30px;
    background: linear-gradient(135deg, #ffd700, #ffa500);
    border-radius: 6px;
    position: relative;
}

.card-number {
    font-family: monospace;
    font-size: 1.3rem;
    letter-spacing: 0.1em;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
    margin-bottom: 0.5rem;
}

.card-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.05em;
}

.card-holder-name {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.brand-small-logo {
    color: #ffffff;
}

/* Simulated backgrounds presets */
.neon-gradient {
    background: radial-gradient(circle at 10% 20%, rgb(0, 107, 141) 0%, rgb(0, 0, 0) 90.7%);
}
.sunset-mesh {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    background: radial-gradient(circle at 20% 30%, #fbc2eb 0%, #a6c1ee 100%);
}
.minimalist-dark {
    background: #0d0f1b;
}

.code-export-box {
    position: relative;
}

.code-export-box pre {
    background-color: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

.code-export-box code {
    font-family: monospace;
    font-size: 0.8rem;
    color: #a6c1ee;
}

.copy-code-btn {
    position: absolute;
    right: 8px;
    top: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: var(--transition);
}

.copy-code-btn:hover {
    border-color: var(--primary);
    background-color: var(--primary);
    color: var(--text-dark);
}

/* Charts Holder */
.chart-canvas-holder {
    position: relative;
    max-height: 280px;
    width: 100%;
}

.finance-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
}

.highlight-box {
    border-color: var(--primary) !important;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.05), rgba(79, 172, 254, 0.01));
}

/* Sticky Toast Notification */
.toast-alert-badge {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--bg-sidebar);
    border: 1px solid var(--success);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 1000;
    transform: translateY(150%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease, visibility 0.3s ease;
}

.toast-alert-badge.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.toast-icon {
    color: var(--success);
    width: 20px;
    height: 20px;
}

/* Rich SEO Guides at Bottom of Panel */
.seo-guide-section {
    margin-top: 3.5rem;
    border: 1px solid var(--border-color);
}

.seo-guide-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.faq-item h4 {
    font-size: 1.05rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Footer Section */
.app-footer {
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Mobile responsive drawer toggles */
@media (max-width: 768px) {
    .app-sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        bottom: 0;
        transition: var(--transition);
        box-shadow: 10px 0 35px rgba(0,0,0,0.5);
    }
    
    .app-sidebar.mobile-active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .app-header {
        padding: 0 1rem;
    }
    
    .content-viewport {
        padding: 1rem;
    }
}