/* BMP Converter Styles */
:root {
    --primary-color: #4a6cf7;
    --primary-hover: #3a5ce4;
    --secondary-color: #6c757d;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
    --darker-gray: #2c3034;
    --border-color: #e1e4e8;
    --text-color: #333;
    --text-light: #6c757d;
    --text-lightest: #adb5bd;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --header-height: 70px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f5f7ff;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
.main-header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--dark-gray);
}

.main-nav ul {
    display: flex;
    gap: 2rem;
}

.main-nav a {
    color: var(--dark-gray);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 0.5rem 0;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-gray);
}

/* Main Content */
main {
    margin-top: calc(var(--header-height) + 2rem);
    padding: 2rem 0;
    min-height: calc(100vh - var(--header-height) - 200px);
}

.tool-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.tool-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.tool-header p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Converter Container */
.converter-container {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

/* Upload Section */
.upload-section {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 3rem 1.5rem;
    text-align: center;
    margin-bottom: 2rem;
    transition: var(--transition);
    cursor: pointer;
    background: #fff;
}

.upload-section:hover {
    border-color: var(--primary-color);
    background-color: rgba(74, 108, 247, 0.03);
}

.upload-section.highlight {
    border-color: var(--primary-color);
    background-color: rgba(74, 108, 247, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-section h3 {
    margin: 0 0 0.5rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.upload-section p {
    color: var(--text-light);
    margin: 0.5rem 0 1.5rem;
}

.file-types {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 1rem;
}

/* File List */
.file-list {
    margin-bottom: 1.5rem;
    display: none;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.file-info i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.file-name {
    font-weight: 500;
}

.file-size {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-left: 0.5rem;
}

/* Conversion Options */
.conversion-options {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
}

.conversion-options h3 {
    margin-bottom: 1.25rem;
    color: var(--dark-gray);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.option-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.1);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 108, 247, 0.2);
}

.btn-secondary {
    background-color: #f0f2f5;
    color: var(--dark-gray);
}

.btn-secondary:hover {
    background-color: #e2e6ea;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.875rem;
}

.btn-remove {
    color: var(--danger-color);
    background: none;
    padding: 0.25rem 0.5rem;
}

.btn-remove:hover {
    background: rgba(220, 53, 69, 0.1);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Results Section */
.results-section {
    margin-top: 2rem;
    display: none;
}

.results-section h3 {
    margin-bottom: 1.25rem;
    color: var(--dark-gray);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.result-item {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.result-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.result-preview {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-gray);
    color: var(--primary-color);
    font-size: 2.5rem;
}

.result-info {
    padding: 1rem;
}

.result-name {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-size {
    font-size: 0.85rem;
    color: var(--text-light);
}

.result-actions {
    padding: 0 1rem 1rem;
}

.btn-download {
    width: 100%;
    background-color: var(--success-color);
    color: white;
    padding: 0.5rem;
    text-align: center;
    border-radius: var(--border-radius);
}

.btn-download:hover {
    background-color: #218838;
    transform: none;
}

.bulk-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* Info Section */
.info-section {
    margin: 4rem 0;
}

.info-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-gray);
    position: relative;
    padding-bottom: 1rem;
}

.info-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

.info-section p {
    max-width: 800px;
    margin: 0 auto 2.5rem;
    text-align: center;
    color: var(--text-light);
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature {
    text-align: center;
    padding: 2rem 1.5rem;
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: rgba(74, 108, 247, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.feature:hover .feature-icon {
    background: var(--primary-color);
    color: #fff;
    transform: rotate(5deg) scale(1.05);
}

.feature h3 {
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.feature p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* FAQ Section */
.faq-section {
    margin: 4rem 0;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--dark-gray);
    position: relative;
    padding-bottom: 1rem;
}

.faq-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

.faq-item {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-left: 3px solid var(--primary-color);
}

.faq-question {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: rgba(74, 108, 247, 0.03);
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--dark-gray);
    margin: 0;
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    background-color: #f9f9ff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.faq-answer p {
    padding: 1.5rem 0;
    margin: 0;
    color: var(--text-light);
    line-height: 1.7;
}

/* Footer */
.main-footer {
    background-color: var(--darker-gray);
    color: var(--text-lightest);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: #fff;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-section p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
    color: var(--text-lightest);
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: var(--text-lightest);
    display: inline-block;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: #fff;
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 1rem;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--text-lightest);
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 1rem 0;
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }
    
    .main-nav.active {
        transform: translateY(0);
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 0 2rem;
        gap: 0;
    }
    
    .main-nav li {
        border-bottom: 1px solid var(--border-color);
    }
    
    .main-nav a {
        display: block;
        padding: 0.8rem 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .tool-header h1 {
        font-size: 2rem;
    }
    
    .converter-container {
        padding: 1.5rem;
    }
    
    .upload-section {
        padding: 2rem 1rem;
    }
    
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-section {
        text-align: center;
    }
    
    .footer-section h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .tool-header h1 {
        font-size: 1.75rem;
    }
    
    .tool-header p {
        font-size: 1rem;
    }
}

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

.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.font-weight-bold {
    font-weight: 600;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #b8c2cc;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a5aeb8;
}