:root {
    --primary: #3498db;
    --primary-hover: #2980b9;
    --secondary: #e74c3c;
    --accent: #1abc9c;
    --white: #ffffff;
    --radius: 12px;
    --transition: all 0.3s ease;

    /* Theme Variables - Light Mode Default */
    --bg: #f8f9fa;
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-hover-bg: rgba(255, 255, 255, 1);
    --tool-container-bg: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --border: #e0e0e0;
    --input-bg: #ffffff;
    --input-border: #ddd;
    --result-bg: #ebf5fb;
    --dropdown-bg: #ffffff;
    --dropdown-text: #333333;
    --dropdown-hover: #ebf5fb;
    --footer-bg: #2c3e50;
    --footer-text: #ffffff;
    --ad-bg: #eeeeee;
    --ad-border: #cccccc;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --nav-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg: #121212;
    --card-bg: rgba(30, 30, 30, 0.8);
    --card-hover-bg: rgba(40, 40, 40, 0.9);
    --tool-container-bg: #1e1e1e;
    --text: #e0e0e0;
    --text-light: #aaaaaa;
    --border: #333333;
    --input-bg: #2a2a2a;
    --input-border: #444;
    --result-bg: #1a2a35;
    --dropdown-bg: #1e1e1e;
    --dropdown-text: #e0e0e0;
    --dropdown-hover: #2a2a2a;
    --footer-bg: #000000;
    --ad-bg: #1a1a1a;
    --ad-border: #333333;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

/* Filter Buttons */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: -20px auto 40px;
    padding: 10px;
    background: var(--white);
    width: fit-content;
    border-radius: 50px;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 10;
}

.filter-btn {
    padding: 10px 20px;
    border-radius: 40px;
    background: transparent;
    color: var(--text);
    border: 1px solid transparent;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

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

.filter-btn:hover:not(.active) {
    background: var(--bg);
}

.coming-soon-card {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--bg) !important;
}

.coming-soon-card:hover {
    transform: none !important;
    box-shadow: none !important;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
}

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

/* Header & Navigation */
header {
    background: var(--primary);
    color: var(--white);
    padding: 0.8rem 0;
    position: sticky;
    top: 0;
    z-index: 1100;
    box-shadow: var(--nav-shadow);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    margin-left: 40px;
}

.theme-toggle {
    background: transparent;
    color: var(--white);
    padding: 10px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin-left: auto;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-links-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
}

.menu-toggle {
    display: none;
    background: transparent;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

.nav-item {
    position: relative;
    padding: 10px 0;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--accent);
}

/* Dropdown Styles */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--dropdown-bg);
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 1100;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--dropdown-text) !important;
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background: var(--dropdown-hover);
    color: var(--primary) !important;
}

/* Submenu Styles */
.submenu-item {
    position: relative;
}

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

.submenu {
    position: absolute;
    left: 100%;
    top: 0;
    background: var(--dropdown-bg);
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: var(--transition);
    z-index: 1101;
}

.submenu-item:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.submenu a {
    display: block;
    padding: 10px 20px;
    color: var(--dropdown-text) !important;
    font-size: 0.9rem;
}

.submenu a:hover {
    background: var(--dropdown-hover);
    color: var(--primary) !important;
}


/* Category Sections */
.category-section {
    margin-bottom: 60px;
}

.category-title {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.category-title div {
    display: flex;
    align-items: center;
    gap: 12px;
}

.category-title i {
    font-size: 1.5rem;
}

/* Tool Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #2980b9 100%);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 800;
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-container i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-size: 1.2rem;
}

.search-input {
    width: 100%;
    padding: 18px 20px 18px 55px;
    border-radius: 50px;
    border: none;
    font-size: 1.1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.search-input:focus {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* Ad Placeholders */
.ad-placeholder {
    background: var(--ad-bg);
    margin: 20px auto;
    padding: 20px;
    text-align: center;
    border: 2px dashed var(--ad-border);
    color: var(--text-light);
    max-width: 728px;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tool Layout */
.tool-container {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 40px;
}

.tool-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin: 40px 0;
}

/* Tool Card Enhancements */
.tool-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 5px solid var(--primary);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tool-thumb {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background: #f0f0f0;
}

.tool-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.tool-card:hover .tool-thumb img {
    transform: scale(1.1);
}

.tool-info {
    padding: 20px;
}


.tool-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 25px rgba(0, 106, 78, 0.15);
    background: var(--card-hover-bg);
}

.tool-card::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 100px;
    height: 100px;
    background: var(--primary);
    opacity: 0.05;
    border-radius: 50%;
    transition: var(--transition);
}

.tool-card:hover::after {
    transform: scale(2);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-container {
    animation: fadeIn 0.6s ease-out;
}

.tool-card h3 {
    margin-bottom: 10px;
    color: var(--primary);
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 12px;
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 106, 78, 0.1);
}

button {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

button:hover {
    background: var(--primary-hover);
    transform: scale(1.02);
}

/* Results Area */
.result-box {
    margin-top: 30px;
    padding: 30px;
    background: var(--result-bg);
    border-radius: var(--radius);
    border-left: 6px solid var(--primary);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tool Hero (Single Page) */
.tool-hero {
    text-align: center;
    margin-bottom: 40px;
    padding: 60px 20px;
    background: var(--tool-container-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.tool-hero h1 {
    font-size: 2.5rem;
    margin: 15px 0;
    color: var(--text);
    font-weight: 800;
}

.tool-hero p {
    color: var(--text-light);
    max-width: 650px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.tool-badge {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* SEO Content */
.seo-section {
    margin: 60px 0;
}

.seo-section h2 {
    margin-bottom: 20px;
    color: var(--primary);
}

.faq-section {
    margin: 40px 0;
}

.faq-item {
    margin-bottom: 20px;
}

.faq-item h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

/* Footer */
footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 40px 0;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

/* Upload & Dropzone */
.upload-zone {
    display: block;
    padding: 60px 40px;
    border: 3px dashed var(--border);
    text-align: center;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg);
}

#qrcode svg,
#qrcode canvas {
    max-width: 100% !important;
    height: auto !important;
}

.upload-zone:hover {
    border-color: var(--primary);
    background: rgba(52, 152, 219, 0.05);
}

.upload-zone i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.upload-zone p {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 992px) {
    .nav-links-wrapper {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: var(--primary);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links-wrapper.active {
        transform: translateY(0);
    }

    .nav-item {
        width: 100%;
        text-align: center;
        padding: 15px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.05);
        margin-top: 10px;
        display: none;
        width: 100%;
    }

    .nav-item:hover .dropdown-menu {
        display: block;
    }

    .menu-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .filter-tabs {
        width: 100%;
        margin-top: -30px;
        overflow-x: auto;
        justify-content: flex-start;
        padding: 8px 15px;
        white-space: nowrap;
        border-radius: 0;
    }

    .filter-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    /* Mobile Submenu Styles */
    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.03);
        margin-top: 5px;
        margin-left: 15px;
        display: none;
    }

    .submenu-item:hover .submenu {
        display: block;
    }

    .submenu-trigger {
        padding: 12px 20px !important;
    }
}

@media (max-width: 768px) {
    .tool-card-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }

    .tool-thumb {
        height: 120px;
    }

    .tool-info h3 {
        font-size: 1rem;
    }

    .tool-info p {
        font-size: 0.8rem;
    }

    .hero {
        padding: 50px 0;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .tool-hero {
        padding: 40px 15px;
    }

    .tool-hero h1 {
        font-size: 1.6rem;
    }
}