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

:root {
    --header-height: 57px;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.9);
    --bg-hover: rgba(59, 130, 246, 0.1);
    
    --accent-blue: #3b82f6;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-teal: #06b6d4;
    --accent-red: #ef4444;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #475569;
    --glow: 0 0 20px rgba(59, 130, 246, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --glass-bg: rgba(15, 23, 42, 0.8);
    --glass-border: rgba(71, 85, 105, 0.5);

    --primary-color: var(--accent-blue);
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
    width: 100%;
}

.header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    height: 100%;
}

.logo:hover {
    transform: translateY(-2px);
}

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

.fusion-logo-text {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-tagline {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-top: -2px;
}

.menu-toggle {
    display: none;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: 0.3s;
}

.sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    width: 220px;
    height: calc(100vh - var(--header-height));
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    overflow-y: auto;
    z-index: 110;
    transition: transform 0.3s ease;
}

.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}

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

.sidebar-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.category {
    margin-bottom: 0.5rem;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    background: transparent;
}

.category-header:hover {
    background: var(--bg-hover);
    border-left-color: var(--accent-blue);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: var(--text-primary);
}

.category-icon {
    font-size: 1.25rem;
}

.category-count {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.category-arrow {
    transition: transform 0.3s ease;
    color: var(--text-muted);
}

.category.active .category-arrow {
    transform: rotate(90deg);
}

.category-tools {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.category.active .category-tools {
    max-height: 1000px;
}

.tool-link {
    display: block;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    font-size: 0.875rem;
}

.tool-link:hover {
    color: var(--accent-blue);
    background: var(--bg-hover);
    border-left-color: var(--accent-blue);
    padding-left: 3.75rem;
}

.tool-link.active {
    color: var(--accent-blue);
    background: var(--bg-hover);
    border-left-color: var(--accent-blue);
    font-weight: 500;
}

.main-content {
    margin-left: 220px;
    padding: 1.5rem;
    min-height: calc(100vh - var(--header-height));
    width: calc(100% - 220px);
    box-sizing: border-box;
}

.home-hero {
    text-align: center;
    padding: 1.25rem 0 1rem;
    margin-bottom: 1.25rem;
}

.home-hero-kicker {
    display: inline-block;
    margin-bottom: 0.85rem;
    padding: 0.38rem 0.85rem;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.home-hero h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.85rem;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.home-hero h1 span {
    display: inline-block;
    margin-top: 0.3rem;
}

.home-hero p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.8;
}

.categories-grid {
    display: grid;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.category-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: all 0.3s ease;
}

.category-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-blue);
}

.category-section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
}

.category-section-icon {
    font-size: 1.75rem;
    filter: drop-shadow(0 0 10px currentColor);
}

.category-section-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.875rem;
    width: 100%;
}

.tool-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

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

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    background: var(--bg-hover);
}

.tool-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.tool-card-description {
    font-size: 0.825rem;
    color: var(--text-secondary);
    line-height: 1.4;
}


.tool-container {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
    animation: fadeInUp 0.4s ease;
    max-width: 100%;
    margin: 0 auto;
}


.tool-container.compact {
    padding: 1rem;
}

.tool-container.wide {
    max-width: 1400px;
}

.tool-container.narrow {
    max-width: 700px;
}

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

.tool-container.single-column {
    max-width: 600px;
}

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

.tool-container h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.tool-container > p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    line-height: 1.5;
}


.tool-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.tool-header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.tool-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin: 0;
}


.tool-body {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}


.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

/* Email Signature Generator - Preview styling */
.tool-section .preview h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}
.tool-section .preview #es-preview {
    background: #ffffff;
    color: #111111;
    border: 1px solid rgba(0,0,0,0.08);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(2,6,23,0.12);
    max-width: 100%;
}
.tool-section .preview #es-preview a {
    color: #2563eb;
    text-decoration: none;
}
.tool-section .preview #es-preview a:hover {
    text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
    .tool-section .preview #es-preview {
        background: #ffffff;
        color: #111111;
    }
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-sm);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}


.percentage-section {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.percentage-section h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}


.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}


.converter-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.converter-arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--accent-blue);
    margin: 1rem 0;
}


.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 1rem 0;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    color: var(--text-primary);
    font-weight: normal;
    cursor: pointer;
    transition: color 0.3s ease;
}

.checkbox-group label:hover {
    color: var(--accent-blue);
}


.password-output {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.password-display {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

.btn-icon {
    padding: 0.875rem;
    min-width: 50px;
    font-size: 1.25rem;
}


.password-strength {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.strength-indicator {
    height: 8px;
    border-radius: 4px;
    margin-top: 0.5rem;
    background: var(--bg-secondary);
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    transition: width 0.3s ease, background-color 0.3s ease;
}

.strength-weak { background: var(--accent-red); }
.strength-medium { background: var(--accent-orange); }
.strength-strong { background: var(--accent-green); }


.form-group {
    margin-bottom: 1rem;
}

.form-group.compact {
    margin-bottom: 0.75rem;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-range {
    width: 100%;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="date"],
input[type="datetime-local"],
input[type="file"],
select,
textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-secondary);
}

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

input[type="checkbox"],
input[type="radio"] {
    width: auto;
    margin-right: 0.5rem;
    accent-color: var(--accent-blue);
}

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

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 50%;
    cursor: pointer;
    border: none;
}


button,
.button {
    padding: 0.65rem 1.25rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    text-decoration: none;
    display: inline-block;
}

button:hover,
.button:hover,
.btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

button:active,
.button:active,
.btn:active {
    transform: translateY(0);
}

button.primary,
.button.primary,
.btn-primary,
.btn.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border: none;
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

button.secondary,
.btn-secondary,
.btn.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

button.primary:hover,
.button.primary:hover,
.btn-primary:hover,
.btn.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.button-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}


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

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn:hover {
    color: var(--accent-blue);
    background: var(--bg-hover);
    border-radius: 8px 8px 0 0;
}

.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}


#result,
#output,
.result-container,
.output-container {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 1rem;
    min-height: 80px;
}


#imagePreview,
.image-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}


#qrcode,
.qr-display {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    display: inline-block;
    margin: 1rem 0;
}


.info-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1.25rem;
    font-size: 0.85rem;
}

.info-box h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.info-box ul,
.info-box p {
    margin: 0.5rem 0;
    font-size: 0.85rem;
    line-height: 1.5;
}

.info-box ul {
    padding-left: 1.25rem;
}

.info-box li {
    margin: 0.25rem 0;
}


#validationMessage,
.validation-message {
    padding: 0.85rem;
    border-radius: 8px;
    margin: 0.85rem 0;
    border-left: 4px solid;
}

.validation-message.success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.validation-message.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}


.info-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-blue);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.info-box.success {
    border-left-color: var(--accent-green);
}

.info-box.warning {
    border-left-color: var(--accent-orange);
}

.info-box.error {
    border-left-color: var(--accent-red);
}

.info-box.info {
    border-left-color: var(--accent-teal);
}

.info-box h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.info-box ul {
    list-style: none;
    padding-left: 0;
}

.info-box li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.info-box li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: bold;
}

.info-box code {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    color: var(--accent-blue);
    font-size: 0.9em;
}

.info-box p {
    color: var(--text-secondary);
}

.info-box strong {
    color: var(--text-primary);
}


.notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideInUp 0.3s ease;
    min-width: 300px;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(100%);
    }
}

.notification.success {
    border-left: 4px solid var(--accent-green);
}

.notification.error {
    border-left: 4px solid var(--accent-red);
}


.calculator {
    max-width: 450px;
    margin: 0 auto;
}

.calculator-display,
#display {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: right;
    font-size: 2.5rem;
    font-family: 'Courier New', monospace;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    word-wrap: break-word;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
    width: 100%;
    box-sizing: border-box;
}

.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    width: 100%;
}

.calculator-buttons button,
.calculator-buttons .btn-calc {
    padding: 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    aspect-ratio: 1;
    min-height: 60px;
}

.calculator-buttons button.operator,
.calculator-buttons .btn-operator {
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-red));
    color: white;
    border: none;
}

.calculator-buttons button.equals,
.calculator-buttons .btn-equals {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-teal));
    color: white;
    border: none;
}

.calculator-buttons .btn-secondary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}


table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 10px;
    text-align: left;
    color: var(--text-primary);
}

th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

tr {
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background: var(--bg-hover);
}


pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}


.footer {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
    padding: 3rem 0 2rem;
    color: var(--text-secondary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.75rem;
    margin-bottom: 2rem;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
    align-items: flex-start;
}

.footer-section h4 {
    margin: 0 0 1rem 0;
    font-weight: 600;
    color: var(--text-primary);
}

.footer-title {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-text {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
}

.footer-link-icon {
    font-size: 1.2rem;
}

.footer-support-text {
    margin: 0 0 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.footer-support-btn {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, #ffdd00 0%, #fbb034 100%);
    color: #000;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(255, 221, 0, 0.3);
}

.footer-links a {
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-blue) !important;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.footer-bottom p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.footer-bottom p:first-child {
    font-weight: 500;
    color: var(--text-primary);
}

.footer-tagline {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.footer-brand-links {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

.footer-brand-link {
    text-decoration: none;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.footer-brand-link-craxor {
    color: #00ff00;
}

.footer-brand-link-bitfusion {
    color: #00ffff;
}

.footer-brand-separator {
    color: var(--text-muted);
    margin: 0 0.5rem;
}


@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1.5rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .home-hero h1 {
        font-size: 2rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .tool-container {
        padding: 1.5rem;
    }
    
    .notification {
        right: 1rem;
        left: 1rem;
        min-width: auto;
    }
    
    .calculator {
        max-width: 100%;
    }
    
    .calculator-display,
    #display {
        font-size: 2rem;
        padding: 1rem;
        min-height: 60px;
    }
    
    .calculator-buttons {
        gap: 0.5rem;
    }
    
    .calculator-buttons button,
    .calculator-buttons .btn-calc {
        padding: 1rem;
        font-size: 1.1rem;
        min-height: 50px;
    }
    
    .tool-header h1 {
        font-size: 1.75rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 0.75rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .form-row,
    .converter-row {
        grid-template-columns: 1fr;
    }
    
    .password-output {
        flex-direction: column;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .button-group button {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer {
        padding: 2.25rem 0 1.75rem;
    }
}


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

.loader {
    border: 4px solid var(--bg-tertiary);
    border-top: 4px solid var(--accent-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}


::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}


::selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}


.logo-image { display: inline-block; vertical-align: middle; }
.ad-container { margin: 2rem 0; text-align: center; }
.ad-container ins { background: transparent; }

/* Compact Hash Generator Styles */
.compact-hash .form-row { display:flex; gap:12px; align-items:flex-start; }
.compact-hash .form-row textarea.form-control { min-height:64px; resize:vertical; }
.hash-results.compact { display: grid; grid-template-columns: repeat(2, 1fr); gap:10px; margin-top:12px; }
.hash-result-item { background: var(--bg-tertiary); padding:8px; border-radius:8px; border:1px solid var(--border-color); display:flex; flex-direction:column; gap:6px; }
.hash-result-item label { font-size:0.85rem; color:var(--text-muted); }
.hash-output-row { display:flex; gap:8px; align-items:center; }
.hash-output-row input.form-control { font-family: monospace; font-size:0.9rem; padding:6px; }
.btn.btn-icon { padding:6px 8px; font-size:14px; background:transparent; border:1px solid var(--border-color); border-radius:6px; cursor:pointer; }

@media (max-width:600px) {
    .compact-hash .form-row { flex-direction:column; }
    .hash-results.compact { grid-template-columns: 1fr; }
}

/* Consistent sizing for color inputs across all tools */
input[type="color"] {
    width: 40px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    vertical-align: middle;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

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

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: 4px;
}

@media (max-width: 480px) {
    input[type="color"] { width: 36px; height: 24px; }
}

/* Code Comparison Tool Styles */
.comparison-inputs {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
}

.code-input-group {
    flex: 1;
}

.code-input-group textarea {
    width: 100%;
    min-height: 300px;
    resize: vertical;
}

.diff-output {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.diff-side-by-side {
    display: flex;
    gap: 1rem;
}

.diff-panel {
    flex: 1;
}

.diff-panel h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.diff-content {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
}

.diff-line {
    display: flex;
    min-height: 1.4em;
}

.line-num {
    width: 3rem;
    text-align: right;
    padding-right: 0.5rem;
    color: var(--text-muted);
    user-select: none;
    flex-shrink: 0;
}

.line-content {
    flex: 1;
}

.diff-delete {
    background: rgba(239, 68, 68, 0.2);
    text-decoration: line-through;
}

.diff-insert {
    background: rgba(16, 185, 129, 0.2);
    font-weight: bold;
}

.diff-empty {
    background: var(--bg-tertiary);
    opacity: 0.5;
}

.diff-inline {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
}

.diff-inline .diff-delete {
    background: rgba(239, 68, 68, 0.3);
    text-decoration: line-through;
}

.diff-inline .diff-insert {
    background: rgba(16, 185, 129, 0.3);
    font-weight: bold;
}

.diff-unified {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    white-space: pre;
    overflow-x: auto;
}

@media (max-width: 768px) {
    .comparison-inputs {
        flex-direction: column;
    }
    
    .diff-side-by-side {
        flex-direction: column;
    }
}