:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --background-color: #f8fafc;
    --text-color: #1e293b;
    --card-bg: #ffffff;
    --nav-height: 70px;
    --border-radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.7;
}

.background-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #dbeafe 25%, transparent 25%) -40px 0,
                linear-gradient(225deg, #dbeafe 25%, transparent 25%) -20px 0,
                linear-gradient(315deg, #dbeafe 25%, transparent 25%),
                linear-gradient(45deg, #dbeafe 25%, transparent 25%);
    background-size: 80px 80px;
    background-color: var(--background-color);
    opacity: 0.5;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    height: 40px;
    width: 40px;
}

.logo span {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    margin-left: auto;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.2s;
    padding: 0.5rem 0;
}

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

/* Mobile Menu Button */
.menu-btn {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    z-index: 1000;
}

.menu-btn__burger {
    width: 30px;
    height: 3px;
    background: var(--text-color);
    border-radius: 5px;
    transition: all 0.3s ease-in-out;
    position: relative;
}

.menu-btn__burger::before,
.menu-btn__burger::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 3px;
    background: var(--text-color);
    border-radius: 5px;
    transition: all 0.3s ease-in-out;
}

.menu-btn__burger::before {
    transform: translateY(-8px);
}

.menu-btn__burger::after {
    transform: translateY(8px);
}

/* Animation for burger menu */
.menu-btn.open .menu-btn__burger {
    transform: translateX(-50px);
    background: transparent;
}

.menu-btn.open .menu-btn__burger::before {
    transform: rotate(45deg) translate(35px, -35px);
}

.menu-btn.open .menu-btn__burger::after {
    transform: rotate(-45deg) translate(35px, 35px);
}

@media (max-width: 768px) {
    .menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: all 0.3s ease-in-out;
        z-index: 999;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links a {
        font-size: 1.2rem;
        padding: 1rem 2rem;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }

    .nav-links a:hover {
        background: rgba(37, 99, 235, 0.1);
    }

    .logo span {
        font-size: 1.1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
        padding: 0 1rem;
    }

    .hero p {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1rem;
    }

    .about-content {
        padding: 1rem;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .detector-container {
        padding: 1rem;
    }

    .input-container {
        width: 100%;
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        padding: 1rem;
    }

    .partner-logo img {
        max-width: 120px;
        height: auto;
    }
}

/* Partners section mobile optimization */
@media (max-width: 768px) {
    .partners-section {
        padding: 2rem 1rem;
    }

    .partners-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 1rem;
    }

    .partner-logo {
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 1rem;
        background: rgba(255, 255, 255, 0.8);
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
        transition: transform 0.3s ease;
    }

    .partner-logo:hover {
        transform: translateY(-5px);
    }

    .partner-logo img {
        max-width: 180px;
        width: 100%;
        height: auto;
        object-fit: contain;
    }
}

/* Main Content */
main {
    padding-top: var(--nav-height);
}

section {
    padding: 4rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    text-align: center;
    padding: 6rem 5% 4rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Detector Container */
.detector-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    margin: 2rem auto;
    max-width: 800px;
}

textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s;
}

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

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* About Section */
.about-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 2rem auto;
}

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

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s;
}

.faq-question:hover {
    background-color: rgba(37, 99, 235, 0.05);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-color);
}

.toggle-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 300;
    transition: transform 0.3s;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: rgba(37, 99, 235, 0.02);
}

.faq-answer p {
    margin: 0;
    padding: 1.5rem;
    color: var(--text-color);
    line-height: 1.6;
}

/* How to Use Section */
.how-to-use-section {
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    padding: 6rem 5%;
    position: relative;
    overflow: hidden;
}

.how-to-use-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
    position: relative;
}

.step-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.step-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
}

.step-card:hover::before {
    opacity: 1;
}

.step-number {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.step-content h3 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
    font-size: 1.3rem;
    font-weight: 600;
}

.step-content p {
    margin: 0;
    color: #64748b;
    line-height: 1.6;
    font-size: 1rem;
}

/* Partners Section */
.partners-section {
    text-align: center;
    padding: 6rem 5%;
    background: white;
    position: relative;
}

.partners-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
}

.partners-section h2 {
    margin-bottom: 1rem;
}

.partners-section p {
    color: #64748b;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 4rem auto;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.8), rgba(255, 255, 255, 0.8));
    border-radius: 20px;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.05);
}

.partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    filter: grayscale(100%) opacity(50%);
    transition: all 0.4s ease;
    position: relative;
}

.partner-logo::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: transform 0.3s ease;
}

.partner-logo:hover {
    filter: grayscale(0%) opacity(100%);
    transform: translateY(-5px);
}

.partner-logo:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.partner-logo img {
    max-width: 140px;
    max-height: 45px;
    object-fit: contain;
}

/* Contact Section */
.contact-section {
    padding: 6rem 5%;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    position: relative;
    text-align: center;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
}

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

.contact-intro {
    color: #64748b;
    font-size: 1.2rem;
    margin: 1.5rem 0 3rem;
    line-height: 1.6;
}

.contact-details {
    display: grid;
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.05);
    transition: transform 0.3s ease;
    text-align: left;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    flex-shrink: 0;
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.contact-text strong {
    color: var(--text-color);
    font-size: 1rem;
}

.contact-text a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 1.1rem;
}

.contact-text a:hover {
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .contact-section {
        padding: 4rem 5%;
    }

    .contact-item {
        padding: 1.2rem;
    }

    .contact-intro {
        font-size: 1.1rem;
        margin: 1rem 0 2rem;
    }
}

/* Footer */
footer {
    background: var(--card-bg);
    padding: 2rem 5%;
    box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
        padding: 1.5rem;
    }
    
    .partner-logo img {
        max-width: 120px;
        max-height: 40px;
    }
    
    .how-to-use-section,
    .partners-section {
        padding: 4rem 5%;
    }
}

/* Result Container Styles */
.result-container {
    margin-top: 2rem;
    width: 100%;
    max-width: 800px;
    transition: all 0.3s ease;
    padding: 0 1.5rem;
}

.result-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.result-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    padding-top: 3.5rem;
}

.score-circle {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto;
}

.progress-ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-ring-circle {
    transition: stroke-dashoffset 0.3s ease;
    stroke-linecap: round;
}

.score-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 80%;
}

.score-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.score-label {
    font-size: 1rem;
    color: var(--text-color);
    opacity: 0.8;
}

.detection-badge {
    position: absolute;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
    z-index: 1;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .result-container {
        margin-top: 1rem;
        padding: 0 1rem;
    }

    .result-card {
        padding: 2.5rem 1.5rem;
    }

    .score-circle {
        width: 160px;
        height: 160px;
    }

    .score-value {
        font-size: 2rem;
        margin-bottom: 0.3rem;
    }

    .score-label {
        font-size: 0.9rem;
    }

    .detection-badge {
        top: 1rem;
        padding: 0.5rem 1.2rem;
        font-size: 0.9rem;
    }

    .result-content {
        padding-top: 3rem;
    }
}

/* Small mobile optimizations */
@media (max-width: 480px) {
    .result-container {
        padding: 0 0.75rem;
    }

    .result-card {
        padding: 2rem 1.25rem;
    }

    .score-circle {
        width: 140px;
        height: 140px;
    }

    .score-content {
        width: 70%;
    }

    .score-value {
        font-size: 1.75rem;
        margin-bottom: 0.2rem;
    }

    .score-label {
        font-size: 0.8rem;
    }

    .detection-badge {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }

    .result-content {
        padding-top: 2.5rem;
    }
}

/* Loading Animation */
.loading {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    border: 3px solid rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading p {
    color: #64748b;
    font-size: 1.1rem;
}

/* Error State */
.error {
    background: #fff5f5;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    color: #e53e3e;
}

.error h3 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
}

.error p {
    margin: 0;
    color: #64748b;
}

@media (max-width: 768px) {
    .result-card {
        padding: 2rem 1.5rem;
    }

    .detection-badge {
        font-size: 1rem;
        padding: 0.4rem 1.2rem;
    }

    .score-value {
        font-size: 2rem;
    }

    .score-circle {
        width: 120px;
        height: 120px;
    }

    .progress-ring {
        width: 120px;
        height: 120px;
    }

    .progress-ring-circle {
        r: 52;
        cx: 60;
        cy: 60;
    }
}

/* Benefits Grid Styles */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.benefit-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 10px;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.benefit-item:hover {
    transform: translateY(-5px);
}

.benefit-item i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #4a90e2;
}

.benefit-item strong {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.benefit-item p {
    margin: 0;
    color: #666;
}

/* Features List Styles */
.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item i {
    font-size: 1.5rem;
    color: #4a90e2;
    flex-shrink: 0;
}

.feature-text {
    flex: 1;
}

.feature-text strong {
    display: block;
    margin-bottom: 0.5rem;
}

.feature-text p {
    margin: 0;
    color: #666;
}

.about-section h3 i {
    margin-right: 0.5rem;
    color: #4a90e2;
}

/* Privacy Policy Page */
.policy-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 5%;
    color: var(--text-color);
}

.policy-content h1 {
    font-size: 2.5rem;
    margin: 4rem 0 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

.policy-content > p:first-of-type {
    color: #64748b;
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.policy-content section {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.policy-content section:hover {
    box-shadow: 0 8px 12px rgba(37, 99, 235, 0.08);
    transform: translateY(-2px);
    transition: all 0.3s ease;
}

.policy-content h2 {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(37, 99, 235, 0.1);
}

.policy-content p {
    color: #334155;
    line-height: 1.7;
    margin: 1rem 0;
}

.policy-content ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.policy-content ul li {
    position: relative;
    padding-left: 1.5rem;
    margin: 0.8rem 0;
    color: #334155;
    line-height: 1.6;
}

.policy-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.policy-content strong {
    color: var(--text-color);
    font-weight: 600;
}

.policy-content a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.policy-content a:hover {
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .policy-content {
        padding: 1rem 5%;
    }

    .policy-content h1 {
        font-size: 2rem;
        margin: 3rem 0 1rem;
    }

    .policy-content section {
        padding: 1.5rem;
        margin: 1.5rem 0;
    }

    .policy-content h2 {
        font-size: 1.3rem;
    }
}