:root {
    --primary-color: #b74b4b;
    --background-color: #0c0c0c;
    --card-background: #1a1a1a;
    --text-color: #e0e0e0;
    --heading-color: #ffffff;
    --input-background: #2c2c2c;
    --border-color: rgba(183, 75, 75, 0.2);
    --warning-color: #ffc107;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
}

.tools-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem 2rem;
}

.tools-container h1 {
    font-size: 4.5rem;
    color: var(--heading-color);
    text-align: center;
    margin-bottom: 1rem;
}

.tools-container h1 span {
    color: var(--primary-color);
}

.tools-description {
    text-align: center;
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.tools-section h2 {
    font-size: 3rem;
    color: var(--heading-color);
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.tool-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
    border-color: var(--primary-color);
}

.tool-card-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    background: rgba(0,0,0,0.2);
}

.tool-card-header i {
    font-size: 2.2rem;
    color: var(--primary-color);
}

.tool-card-header h3 {
    font-size: 2rem;
    color: var(--heading-color);
    margin: 0;
}

.tool-card-body {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex-grow: 1;
}

.tool-card-footer {
    padding: 0 2rem 2rem;
}

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

.file-upload-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload-label:hover {
    border-color: var(--primary-color);
    background: rgba(183, 75, 75, 0.1);
}

.file-upload-label i {
    margin-right: 1rem;
    color: var(--primary-color);
}

.file-upload-label .file-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size-warning {
    display: none;
    color: var(--warning-color);
    font-size: 1.4rem;
    margin-top: 1rem;
    text-align: left;
}

.file-size-warning i {
    margin-right: 0.5rem;
}

.tool-card input[type="text"],
.tool-card textarea {
    width: 100%;
    padding: 1.2rem;
    border: 1px solid var(--input-background);
    border-radius: 8px;
    background: var(--input-background);
    color: var(--text-color);
    font-size: 1.6rem;
    resize: vertical;
}

.tool-card .btn {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: 1.2rem;
    border-radius: 8px;
    font-size: 1.6rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
    width: 100%;
}

.tool-card .btn:hover {
    background: #c95d5d;
}

#pdfOutput canvas,
#qrOutput,
#fileQrOutput {
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 1.5rem;
}

#imgOutput a, #strikeOutput {
    color: var(--primary-color);
    font-size: 1.6rem;
    margin-top: 1.5rem;
    display: block;
    word-wrap: break-word;
}

#strikeOutput del {
    text-decoration-thickness: 2px;
}

.copy-notification {
    color: var(--primary-color);
    font-weight: 600;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease;
    text-align: center;
    margin-top: 1rem;
}

.copy-notification.show {
    visibility: visible;
    opacity: 1;
}

.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 1.5rem auto 0;
}

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

@media (max-width: 768px) {
    .tools-container {
        padding: 6rem 1rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* Password Generator Styles */
.checkbox-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    margin: 1.5rem 0;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 0.5rem;
    width: auto;
}

input[type="range"] {
    width: 100%;
    margin: 1rem 0;
    background: var(--input-background);
    outline: none;
    border-radius: 8px;
}

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

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    border: none;
}

/* Color Picker Styles */
input[type="color"] {
    width: 100%;
    height: 50px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: none;
}

/* Word Counter Styles */
#countOutput {
    background: var(--input-background);
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

#countOutput p {
    margin: 0.5rem 0;
    font-size: 1.4rem;
}

#countOutput span {
    color: var(--primary-color);
    font-weight: 600;
}

/* URL Encoder/Decoder Styles */
#urlOutput {
    margin-top: 1rem;
}

#urlOutput input[type="text"] {
    margin: 0.5rem 0;
    font-family: 'Courier New', monospace;
    font-size: 1.4rem;
}

#urlOutput .btn {
    margin-top: 0.5rem;
}

/* Enhanced responsive adjustments */
@media (max-width: 768px) {
    .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* Advanced Tools Styles with Smooth Animations */

/* Button Group */
.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

/* Hash Options */
.hash-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
    margin: 1.5rem 0;
}

.hash-options label {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    cursor: pointer;
}

.hash-options input[type="checkbox"] {
    margin-right: 0.5rem;
    width: auto;
}

/* Result Box Styles */
.result-box {
    background: var(--input-background);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    animation: fadeInUp 0.5s ease;
}

.result-box:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(183, 75, 75, 0.1);
}

.result-box h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.6rem;
}

.result-box textarea,
.result-box input[type="text"] {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 0.5rem 0;
    font-family: 'Courier New', monospace;
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

.result-box textarea:focus,
.result-box input[type="text"]:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(183, 75, 75, 0.2);
}

/* Hash Results */
.hash-results {
    display: grid;
    gap: 1rem;
}

.hash-item {
    background: var(--input-background);
    padding: 1.2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.hash-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.hash-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 1.4rem;
}

/* Markdown Preview */
.markdown-preview {
    background: var(--input-background);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 1rem;
    border: 1px solid var(--border-color);
    min-height: 100px;
    transition: all 0.3s ease;
    opacity: 0;
    display: none;
}

.markdown-preview.show {
    opacity: 1;
    display: block;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
    color: var(--primary-color);
    margin: 1rem 0;
}

.markdown-preview a {
    color: var(--primary-color);
    text-decoration: underline;
}

.markdown-preview code {
    background: rgba(183, 75, 75, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

/* Size Info */
.size-info {
    color: #4caf50;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

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

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

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

/* Tool Card Hover Effects */
.tool-card {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(183, 75, 75, 0.1), transparent);
    transition: left 0.5s ease;
}

.tool-card:hover::before {
    left: 100%;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(183, 75, 75, 0.2);
}

/* Smooth Fade Transitions */
.tool-card-footer > div {
    transition: all 0.3s ease;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

/* Enhanced Button Effects */
.tool-card .btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.tool-card .btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.tool-card .btn:hover::after {
    width: 300px;
    height: 300px;
}

/* Success Animation */
.success-animation {
    animation: successPulse 0.6s ease;
}

@keyframes successPulse {
    0% {
        transform: scale(1);
        background: var(--primary-color);
    }
    50% {
        transform: scale(1.1);
        background: #4caf50;
    }
    100% {
        transform: scale(1);
        background: var(--primary-color);
    }
}

/* Error Shake Animation */
.error-shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Smooth Input Focus Effects */
.tool-card input:focus,
.tool-card textarea:focus {
    transform: scale(1.02);
    transition: all 0.3s ease;
}

/* Enhanced Mobile Responsive */
@media (max-width: 768px) {
    .button-group {
        grid-template-columns: 1fr;
    }
    
    .hash-options {
        grid-template-columns: 1fr;
    }
    
    .result-box {
        padding: 1rem;
    }
    
    .tool-card:hover {
        transform: none;
        box-shadow: none;
    }
}