/* ===== Global Styles ===== */
:root {
    --primary-color: #edb826;
    --secondary-color: #2b2b2b;
    --text-color: #333;
    --light-gray: #f8f9fa;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ===== Navigation ===== */
.navbar {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    animation: slideDown 0.5s ease;
}

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

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--secondary-color);
    text-decoration: none;
}

.logo i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
}

.dropdown-toggle i {
    font-size: 0.8rem;
    transition: var(--transition);
}

.dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    box-shadow: var(--shadow-hover);
    border-radius: 10px;
    padding: 20px;
    min-width: 900px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    margin-top: 10px;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    margin-top: 20px;
}

.dropdown-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.dropdown-column h4 {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-column h4 i {
    color: var(--primary-color);
}

.dropdown-column a {
    display: block;
    padding: 8px 0;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.dropdown-column a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--secondary-color);
    cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
    text-align: center;
    color: white;
    overflow: hidden;
}

.particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s;
    animation-fill-mode: backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.4s;
    animation-fill-mode: backwards;
}

.btn {
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(237, 184, 38, 0.4);
}

.btn-primary:hover {
    background: #d4a520;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(237, 184, 38, 0.6);
}

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

.btn-secondary:hover {
    background: var(--light-gray);
    transform: translateY(-2px);
}

.hero-features {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s;
    animation-fill-mode: backwards;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.2);
    padding: 10px 20px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
}

.feature-badge i {
    color: var(--primary-color);
}

/* ===== Tools Section ===== */
.tools-section {
    padding: 80px 0;
    background: var(--light-gray);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 60px;
    font-size: 1.1rem;
}

.tools-category {
    margin-bottom: 60px;
}

.category-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.category-title i {
    color: var(--primary-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.tool-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-decoration: none;
    color: var(--text-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

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

.tool-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), #f4c542);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.tool-card:hover .tool-icon {
    transform: scale(1.1) rotate(5deg);
}

.tool-icon i {
    font-size: 2rem;
    color: white;
}

.tool-card h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.tool-card p {
    color: #666;
    font-size: 0.95rem;
}

/* ===== Features Section ===== */
.features-section {
    padding: 80px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-item {
    text-align: center;
    padding: 30px;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), #f4c542);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.feature-item p {
    color: #666;
}

/* ===== FAQ Section ===== */
.faq-section {
    padding: 80px 0;
    background: var(--light-gray);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--secondary-color);
}

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

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 30px 25px;
    max-height: 500px;
}

.faq-answer p {
    color: #666;
    line-height: 1.8;
}

/* ===== Footer ===== */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-logo i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.footer-logo strong {
    color: var(--primary-color);
}

.footer-description {
    color: rgba(255,255,255,0.8);
    margin-bottom: 20px;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

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

.footer-column h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
}

.footer-bottom i {
    color: var(--primary-color);
}

/* ===== Tool Page Styles ===== */
.tool-page {
    min-height: 100vh;
    background: var(--light-gray);
}

.tool-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.tool-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.tool-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.tool-content {
    padding: 60px 0;
}

.tool-container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 15px;
    padding: 60px 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    margin-bottom: 30px;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(237, 184, 38, 0.05);
}

.upload-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.upload-area h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.upload-area p {
    color: #666;
    margin-bottom: 20px;
}

.file-input {
    display: none;
}

.upload-btn {
    background: var(--primary-color);
    color: white;
    padding: 12px 30px;
    border-radius: 50px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.upload-btn:hover {
    background: #d4a520;
    transform: translateY(-2px);
}

.options-section {
    margin: 30px 0;
    padding: 30px;
    background: var(--light-gray);
    border-radius: 10px;
}

.options-section h3 {
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.option-group {
    margin-bottom: 20px;
}

.option-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--secondary-color);
}

.option-group select,
.option-group input[type="text"],
.option-group input[type="number"],
.option-group input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
}

.process-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    padding: 15px;
    border-radius: 10px;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 20px;
}

.process-btn:hover:not(:disabled) {
    background: #d4a520;
    transform: translateY(-2px);
}

.process-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.progress-container {
    display: none;
    margin: 30px 0;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    width: 0;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    color: #666;
    font-weight: 500;
}

.result-container {
    display: none;
    margin-top: 30px;
    padding: 30px;
    background: #e8f5e9;
    border-radius: 10px;
    border: 2px solid #4caf50;
}

.result-info {
    margin-bottom: 20px;
}

.result-info h3 {
    color: #2e7d32;
    margin-bottom: 15px;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-item {
    background: white;
    padding: 15px;
    border-radius: 8px;
}

.stat-item strong {
    display: block;
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.stat-item span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.download-btn {
    width: 100%;
    background: #4caf50;
    color: white;
    padding: 15px;
    border-radius: 10px;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.download-btn:hover {
    background: #45a049;
    transform: translateY(-2px);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .dropdown-menu {
        min-width: 700px;
    }
    
    .dropdown-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .dropdown-menu {
        position: static;
        transform: none;
        min-width: auto;
        margin-top: 10px;
        display: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .dropdown-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .tool-container {
        padding: 20px;
    }
}

/* ===== Animations ===== */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

.slide-up {
    animation: slideUp 0.5s ease;
}

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