/* ==========================================
   OmniTool - Premium CSS Design System
   ========================================== */

/* Base Reset & Variables */
:root {
    --bg-main: #090d16;
    --bg-card: rgba(15, 23, 42, 0.55);
    --bg-sidebar: #0b0f19;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(99, 102, 241, 0.3);
    
    --primary-color: #6366f1; /* HSL indigo */
    --primary-glow: rgba(99, 102, 241, 0.25);
    --accent-color: #ec4899; /* HSL pink */
    --gradient-accent: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-success: #10b981;
    --text-danger: #ef4444;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.5);
    --glow-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode Variables */
[data-theme="light"] {
    --bg-main: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-sidebar: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(99, 102, 241, 0.4);
    
    --text-main: #0f172a;
    --text-muted: #64748b;
    
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.08);
    --glow-shadow: 0 0 20px rgba(99, 102, 241, 0.05);
}

/* Premium Theme Matrix */
[data-theme="matrix"] {
    --bg-main: #020202;
    --bg-card: rgba(5, 20, 5, 0.7);
    --bg-sidebar: #010501;
    --border-color: rgba(0, 255, 70, 0.15);
    --border-hover: rgba(0, 255, 70, 0.45);
    --primary-color: #00ff46;
    --primary-glow: rgba(0, 255, 70, 0.35);
    --accent-color: #008f11;
    --gradient-accent: linear-gradient(135deg, #00ff46 0%, #008f11 100%);
    --text-main: #ebffed;
    --text-muted: #74bf82;
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.9);
    --glow-shadow: 0 0 20px rgba(0, 255, 70, 0.25);
}

/* Premium Theme Cyberpunk */
[data-theme="cyberpunk"] {
    --bg-main: #0c001c;
    --bg-card: rgba(26, 0, 51, 0.65);
    --bg-sidebar: #070010;
    --border-color: rgba(255, 0, 128, 0.15);
    --border-hover: rgba(255, 0, 128, 0.4);
    --primary-color: #ff007f;
    --primary-glow: rgba(255, 0, 128, 0.3);
    --accent-color: #9d00ff;
    --gradient-accent: linear-gradient(135deg, #ff007f 0%, #9d00ff 100%);
    --text-main: #fcf5ff;
    --text-muted: #c2a6ff;
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.7);
    --glow-shadow: 0 0 20px rgba(255, 0, 128, 0.2);
}

/* Premium Theme Sunset */
[data-theme="sunset"] {
    --bg-main: #130702;
    --bg-card: rgba(35, 12, 5, 0.6);
    --bg-sidebar: #0a0301;
    --border-color: rgba(249, 115, 22, 0.15);
    --border-hover: rgba(249, 115, 22, 0.45);
    --primary-color: #f97316;
    --primary-glow: rgba(249, 115, 22, 0.3);
    --accent-color: #ef4444;
    --gradient-accent: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
    --text-main: #fffcfb;
    --text-muted: #fdba74;
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.6);
    --glow-shadow: 0 0 20px rgba(249, 115, 22, 0.2);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition-smooth);
}

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

/* Header Styling */
.app-header {
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition-smooth);
    backdrop-filter: blur(12px);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.logo-icon {
    font-size: 1.8rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rotateGlow 8s infinite linear;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--primary-color);
}

.search-container {
    position: relative;
    width: 100%;
    max-width: 450px;
    margin: 0 1.5rem;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

#tool-search {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.85rem 1rem 0.85rem 3rem;
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

#tool-search:focus {
    border-color: var(--primary-color);
    background-color: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.icon-btn {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 42px;
    height: 42px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.icon-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

.privacy-badge {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--text-success);
    padding: 0.5rem 0.85rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Layout Setup */
.main-layout {
    display: flex;
    flex: 1;
}

/* Sidebar Styling */
.app-sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transition: var(--transition-smooth);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    padding: 0.9rem 1.25rem;
    border-radius: 12px;
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-smooth);
}

.nav-item i {
    font-size: 1.1rem;
    width: 20px;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--text-main);
}

.nav-item.active {
    background: var(--gradient-accent);
    color: #ffffff;
    box-shadow: var(--glow-shadow);
}

/* Main Content Styling */
.content-area {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Ad Container Styling */
.ad-container {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    transition: var(--transition-smooth);
}

.ad-container:hover {
    border-color: var(--border-hover);
}

.ad-label {
    position: absolute;
    top: 4px;
    left: 8px;
    font-size: 0.65rem;
    letter-spacing: 1px;
    font-weight: 700;
    color: var(--text-muted);
}

.ad-space {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    gap: 0.5rem;
}

.ad-sidebar {
    height: 250px;
    margin-top: auto;
}

.ad-sidebar .ad-space {
    height: 100%;
    padding: 1rem;
    text-align: center;
}

.ad-sidebar i {
    font-size: 2rem;
    color: var(--primary-color);
}

.ad-leaderboard {
    max-width: 728px;
    width: 100%;
    height: 90px;
    margin: 0 auto;
}

.ad-leaderboard .ad-space {
    height: 100%;
}

.ad-leaderboard i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

/* Hero Section */
.hero-section {
    padding: 1.5rem 0 0.5rem 0;
}

.hero-section h1 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.75px;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section p {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 800px;
}

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

.tool-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition-smooth);
    backdrop-filter: blur(8px);
    box-shadow: var(--card-shadow);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: var(--glow-shadow), var(--card-shadow);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: #ffffff;
}

.img-icon { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); }
.qr-icon { background: linear-gradient(135deg, #10b981 0%, #047857 100%); }
.json-icon { background: linear-gradient(135deg, #f59e0b 0%, #b45309 100%); font-weight: bold; }
.pass-icon { background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%); }
.calc-icon { background: linear-gradient(135deg, #ec4899 0%, #be185d 100%); }

.tool-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.tool-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    flex: 1;
}

.tool-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Tool Workspace */
.tool-workspace {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    backdrop-filter: blur(8px);
    box-shadow: var(--card-shadow);
}

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

.back-btn {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.6rem 1.25rem;
    border-radius: 10px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
}

.back-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted);
    transform: translateX(-3px);
}

#current-tool-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
}

/* Buttons */
.primary-btn, .secondary-btn, .success-btn {
    border: none;
    padding: 0.85rem 1.75rem;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-smooth);
}

.primary-btn {
    background: var(--gradient-accent);
    color: #ffffff;
    box-shadow: var(--glow-shadow);
}

.primary-btn:hover {
    opacity: 0.95;
    transform: translateY(-2px);
}

.primary-btn:active {
    transform: translateY(0);
}

.secondary-btn {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.success-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.success-btn:hover {
    opacity: 0.95;
    transform: translateY(-2px);
}

.success-btn:disabled {
    background: #475569;
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Core Form Inputs */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
}

input[type="text"], input[type="number"], textarea, select {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.85rem 1rem;
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
    width: 100%;
}

input[type="text"]:focus, input[type="number"]:focus, textarea:focus, select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Image Compressor Tool View styles */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.01);
    transition: var(--transition-smooth);
}

.upload-zone:hover {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.02);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.upload-zone h3 {
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
}

.upload-zone p {
    color: var(--text-muted);
}

.image-editor-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.preview-box {
    background-color: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.preview-box h4 {
    font-family: var(--font-heading);
    color: var(--text-muted);
}

.img-wrapper {
    max-height: 350px;
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.3);
}

.img-wrapper img {
    max-width: 100%;
    max-height: 350px;
    object-fit: contain;
}

.img-size-badge {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
}

.size-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--text-success);
    border-color: rgba(16, 185, 129, 0.2);
}

.control-box {
    background-color: rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    align-items: flex-end;
    gap: 1.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.control-group label {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary-color);
    transition: var(--transition-smooth);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

/* QR Code Tool View styles */
.qr-tool-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
}

.qr-inputs {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.color-pickers-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 100%;
    height: 48px;
    border-radius: 10px;
    cursor: pointer;
    background: none;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.qr-output-pane {
    background-color: rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
}

.qr-preview-wrapper {
    background-color: #ffffff;
    width: 220px;
    height: 220px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.qr-placeholder {
    color: #64748b;
    text-align: center;
    padding: 1rem;
}

.qr-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.qr-preview-wrapper canvas {
    width: 100% !important;
    height: 100% !important;
}

/* JSON Formatter View Styles */
.json-tool-layout {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.25rem;
    align-items: stretch;
}

.json-input-pane, .json-output-pane {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pane-header h4 {
    font-family: var(--font-heading);
    color: var(--text-muted);
}

.pane-actions {
    display: flex;
    gap: 0.5rem;
}

.icon-btn-text {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 5px;
    transition: var(--transition-smooth);
}

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

.danger-text { color: var(--text-danger) !important; }
.danger-text:hover { background-color: rgba(239, 68, 68, 0.08) !important; }
.success-text { color: var(--text-success) !important; }
.success-text:hover { background-color: rgba(16, 185, 129, 0.08) !important; }

#json-input {
    height: 380px;
    font-family: monospace;
    font-size: 0.85rem;
    resize: none;
}

.json-actions-divider {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.json-output-wrapper {
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    height: 380px;
    overflow: auto;
}

.json-output-pre {
    font-family: monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-all;
    color: #e2e8f0;
}

.error-badge {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--text-danger);
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Password Generator View Styles */
.password-tool-layout {
    max-width: 550px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.password-display-box {
    position: relative;
    display: flex;
    align-items: center;
}

.password-display-box input {
    font-family: monospace;
    font-size: 1.25rem;
    font-weight: 600;
    padding: 1rem 3.5rem 1rem 1.25rem;
    letter-spacing: 0.5px;
}

.password-display-box button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
}

.password-strength-meter {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.strength-bar {
    height: 8px;
    width: 100px;
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.strength-bar::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.strength-bar.weak::before { width: 33%; background-color: var(--text-danger); }
.strength-bar.medium::before { width: 66%; background-color: #f59e0b; }
.strength-bar.strong::before { width: 100%; background-color: var(--text-success); }

#strength-label {
    font-size: 0.85rem;
    font-weight: 700;
}

.form-group-range {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.form-group-range label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
}

.checkbox-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

/* Custom Checkbox styles */
.checkbox-container {
    display: block;
    position: relative;
    padding-left: 2.25rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    user-select: none;
    color: var(--text-muted);
}

.checkbox-container:hover {
    color: var(--text-main);
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 22px;
    width: 22px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.checkbox-container:hover input ~ .checkmark {
    background-color: rgba(255, 255, 255, 0.1);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 6px;
    height: 11px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Loan Calculator styles */
.loan-tool-layout {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 2rem;
}

.loan-inputs {
    background-color: rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: fit-content;
}

.loan-results {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.result-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.result-card {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.result-card h4 {
    font-family: var(--font-heading);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.result-value {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.loan-schedule-wrapper {
    background-color: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.loan-schedule-wrapper h4 {
    margin-bottom: 1rem;
    font-family: var(--font-heading);
    color: var(--text-muted);
}

.table-scroll {
    max-height: 250px;
    overflow-y: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

th, td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-muted);
    position: sticky;
    top: 0;
    background-color: #0b0f19;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Footer styles */
.app-footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem 0;
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.footer-seo-content h3 {
    font-family: var(--font-heading);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.footer-seo-content p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-badge-row {
    display: flex;
    gap: 0.5rem;
}

.footer-badge {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
}

.footer-badge i {
    color: var(--primary-color);
    margin-right: 0.25rem;
}

/* No Results section */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
}

.no-results i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.no-results h2 {
    font-family: var(--font-heading);
    margin-bottom: 0.5rem;
}

.no-results p {
    color: var(--text-muted);
}

/* Animations */
@keyframes rotateGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==========================================
   Advanced Tools New Styles
   ========================================== */

/* Color Kit styles */
.color-tool-layout {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 2rem;
}

.color-picker-wrapper-large {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 12px;
}

.color-picker-wrapper-large input[type="color"] {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
}

.active-color-preview {
    flex: 1;
    height: 60px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    transition: var(--transition-smooth);
}

.color-values-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.palette-color-card {
    background-color: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    transition: var(--transition-smooth);
}

.palette-color-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.color-swatch {
    width: 100%;
    height: 100px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.15);
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    transition: var(--transition-smooth);
}

.color-swatch:hover {
    transform: scale(1.05);
}

.color-hex-label {
    font-family: monospace;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-main);
}

/* Diff Checker styles */
.diff-tool-layout {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.diff-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.diff-inputs textarea {
    height: 220px;
    font-family: monospace;
    font-size: 0.85rem;
    resize: none;
}

.diff-input-box h4, .diff-output-box h4 {
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
    color: var(--text-muted);
}

.diff-output-pane {
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    font-family: monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-all;
    min-height: 250px;
    max-height: 450px;
    overflow-y: auto;
    color: #e2e8f0;
}

.diff-added {
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border-radius: 2px;
    padding: 1px 4px;
    border-bottom: 1px solid rgba(16, 185, 129, 0.3);
}

.diff-removed {
    background-color: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border-radius: 2px;
    padding: 1px 4px;
    text-decoration: line-through;
    border-bottom: 1px solid rgba(239, 68, 68, 0.3);
}

/* Markdown Preview styles */
.markdown-tool-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    height: 500px;
}

.md-input-pane textarea {
    height: 460px;
    font-family: monospace;
    font-size: 0.85rem;
    resize: none;
}

.md-output-pane .markdown-body {
    height: 460px;
    overflow-y: auto;
    background-color: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    color: #e2e8f0;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    font-family: var(--font-heading);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding-bottom: 0.25rem;
}

.markdown-body p {
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.markdown-body ul, .markdown-body ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.markdown-body code {
    font-family: monospace;
    background-color: rgba(255,255,255,0.08);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* URL and Base64 tabs & layouts */
.url-action-row {
    display: flex;
    gap: 1rem;
    margin: 1.25rem 0;
}

.base64-tabs, .timer-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}

.base64-tab, .timer-tab, .age-tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.base64-tab:hover, .timer-tab:hover, .age-tab:hover {
    color: var(--text-main);
    background-color: rgba(255,255,255,0.03);
}

.base64-tab.active, .timer-tab.active, .age-tab.active {
    color: #ffffff;
    background-color: var(--primary-color);
    box-shadow: var(--glow-shadow);
}

/* Timer and Stopwatch styles */
.time-display {
    font-family: monospace;
    font-size: 3.5rem;
    font-weight: 700;
    text-align: center;
    padding: 2.5rem 0;
    background-color: rgba(0,0,0,0.25);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    color: var(--primary-color);
    text-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.laps-container {
    margin-top: 2rem;
    background-color: rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    max-height: 200px;
    overflow-y: auto;
}

.laps-container h4 {
    margin-bottom: 0.75rem;
    font-family: var(--font-heading);
    color: var(--text-muted);
}

#laps-list {
    list-style: none;
    font-family: monospace;
    font-size: 0.95rem;
}

#laps-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    display: flex;
    justify-content: space-between;
}

.timer-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 350px;
    margin: 0 auto 1.5rem auto;
}

/* Age Calculator styles */
.age-tool-layout {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 2rem;
}

.age-inputs {
    background-color: rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 16px;
    height: fit-content;
}

.age-results-panel {
    background-color: rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

#age-result-summary {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    text-align: center;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Unit Converter styles */
.unit-tool-layout {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.converter-inputs-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1.5rem;
}

.converter-arrow {
    font-size: 1.8rem;
    color: var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
}

/* ==========================================
   21-in-1 Advanced Tools Styles
   ========================================== */

/* SEO density list */
.density-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.density-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-family: var(--font-body);
}

.density-word {
    font-weight: 600;
    color: var(--text-main);
}

.density-count-badge {
    background-color: var(--primary-glow);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

/* Lorem Settings Row */
.lorem-settings-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 400px;
}

/* Regex Layout Elements */
.regex-input-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 10px;
}

.regex-delimiter {
    font-family: monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
}

#regex-pattern {
    border: none;
    background: transparent;
    padding: 0.35rem 0;
    font-family: monospace;
}

#regex-pattern:focus {
    box-shadow: none;
}

/* JSON XML Grid */
.json-xml-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.json-xml-grid textarea {
    font-family: monospace;
    font-size: 0.85rem;
    resize: none;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .app-sidebar {
        width: 70px;
        padding: 2rem 0.5rem;
        align-items: center;
    }
    .nav-item span, .ad-sidebar {
        display: none;
    }
    .nav-item {
        justify-content: center;
        padding: 0.9rem;
    }
    .json-tool-layout, .color-tool-layout, .markdown-tool-layout, .age-tool-layout {
        grid-template-columns: 1fr;
    }
    .markdown-tool-layout {
        height: auto;
    }
    .md-input-pane textarea, .md-output-pane .markdown-body {
        height: 250px;
    }
    .json-actions-divider {
        flex-direction: row;
    }
    .loan-tool-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-layout {
        flex-direction: column;
    }
    .app-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
    }
    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    .nav-item {
        white-space: nowrap;
        width: auto;
    }
    .preview-container, .diff-inputs, .converter-inputs-row {
        grid-template-columns: 1fr;
    }
    .converter-arrow {
        transform: rotate(90deg);
        margin-top: 0;
        margin-bottom: 0;
    }
    .control-box {
        grid-template-columns: 1fr;
    }
    .qr-tool-layout {
        grid-template-columns: 1fr;
    }
    .result-cards-grid {
        grid-template-columns: 1fr;
    }
    .checkbox-options-grid {
        grid-template-columns: 1fr;
    }
    .ad-leaderboard {
        height: 60px;
    }
}

/* Sponsored Grid Card Ad Custom Styling */
.ad-grid-card {
    border: 1px dashed rgba(99, 102, 241, 0.4) !important;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    opacity: 0.85;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.ad-grid-card:hover {
    border-color: var(--primary-color) !important;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(99, 102, 241, 0.02) 100%) !important;
    opacity: 1;
}

/* PWA Install Banner Premium Styling */
.pwa-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(236, 72, 153, 0.04) 100%);
    border: 1px solid rgba(99, 102, 241, 0.22);
    border-radius: 16px;
    padding: 1.25rem 1.75rem;
    margin-bottom: 2rem;
    gap: 1.5rem;
    box-shadow: 0 8px 32px 0 rgba(99, 102, 241, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    animation: slideDownPWA 0.5s ease-out;
}

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

.pwa-banner-content {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.pwa-banner-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    text-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.pwa-banner-text h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 0.25rem 0;
}

.pwa-banner-text p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.4;
}

.pwa-banner-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

@media (max-width: 768px) {
    .pwa-banner {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.25rem;
        gap: 1rem;
    }
    .pwa-banner-actions {
        width: 100%;
        justify-content: space-between;
    }
    .pwa-banner-icon {
        font-size: 1.8rem;
    }
}

/* Export Share Card Button Styling */
.share-card-btn {
    background: linear-gradient(135deg, #ec4899 0%, #db2777 100%) !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 4px 14px rgba(236, 72, 153, 0.3) !important;
    transition: var(--transition-smooth) !important;
}

.share-card-btn:hover {
    background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%) !important;
    box-shadow: 0 6px 18px rgba(244, 63, 94, 0.4) !important;
    transform: translateY(-2px);
}

@keyframes blinker {
    50% { opacity: 0; }
}

#terminal-output::-webkit-scrollbar {
    width: 6px;
}
#terminal-output::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
}
#terminal-output::-webkit-scrollbar-thumb {
    background: rgba(16, 185, 129, 0.3);
    border-radius: 3px;
}

/* Premium Affiliate Card Styling */
.affiliate-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    gap: 1rem;
    text-align: left;
    transition: var(--transition-smooth);
}

.affiliate-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
}

.affiliate-icon {
    font-size: 1.75rem;
    color: var(--accent-color);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.affiliate-text {
    flex-grow: 1;
}

.affiliate-text h5 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 0.15rem 0;
}

.affiliate-text p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.35;
}

.affiliate-link-btn {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.45rem 0.85rem;
    border-radius: 8px;
    background: rgba(236, 72, 153, 0.1);
    border: 1px solid rgba(236, 72, 153, 0.3);
    color: var(--accent-color);
    text-decoration: none;
    white-space: nowrap;
    text-align: center;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.affiliate-link-btn:hover {
    background: var(--accent-color);
    color: white !important;
    box-shadow: 0 0 12px rgba(236, 72, 153, 0.4);
    transform: translateY(-1px);
}

@media (max-width: 576px) {
    .affiliate-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    .affiliate-link-btn {
        width: 100%;
    }
}