/* ===== CSS VARIABLES ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #f97316;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --text-dark: #111827;
     --text-gray: #374151;
    --border: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --radius: 12px;
}

/* ===== RESET ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
}

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

section {
    padding: 80px 0;
}

/* ===== HEADER ===== */
.header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    font-weight: 500;
    color: var(--text-gray);
    transition: color 0.2s;
}

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

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

/* ===== HERO ===== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 100px;
    text-align: center;
}

 .hero h1 {
     font-size: 3rem;
     font-weight: 800;
     margin-bottom: 20px;
     line-height: 1.1;
 }

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
}

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

.cta-btn {
    background: var(--secondary);
    color: white;
    padding: 16px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.2s;
}

.cta-btn:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-floating {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    padding: 18px 36px;
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    animation: pulse 2s infinite;
}

.submit-btn {
    background: var(--secondary);
    color: white;
    padding: 16px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    width: 100%;
    display: block;
    text-align: center;
}

.submit-btn:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

/* ===== SECTIONS ===== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-gray);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 60px;
}

/* ===== FEATURES ===== */
.features {
    background: var(--bg-light);
}

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

.feature-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-gray);
}

/* ===== HOW IT WORKS ===== */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    counter-reset: step;
}

.step-card {
    text-align: center;
    position: relative;
}

.step-card::before {
    counter-increment: step;
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    margin: 0 auto 20px;
}

.step-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.step-card p {
    color: var(--text-gray);
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    background: var(--bg-light);
}

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

.testimonial-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 20px;
    color: var(--text-gray);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.author-name {
    font-weight: 600;
}

.author-location {
    font-size: 0.875rem;
    color: var(--text-gray);
}

/* ===== FAQ ===== */
.faq-item {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1.125rem;
    font-weight: 600;
    text-align: left;
    background: none;
    color: var(--text-dark);
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    transition: transform 0.2s;
    flex-shrink: 0;
}

.faq-question[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 24px 24px;
    color: var(--text-gray);
    line-height: 1.7;
}

.faq-question[aria-expanded="true"] + .faq-answer {
    display: block;
}

/* ===== CONTACT FORM ===== */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===== BLOG ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.blog-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

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

.blog-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.blog-image svg {
    width: 64px;
    height: 64px;
    opacity: 0.8;
}

.blog-content {
    padding: 24px;
}

.blog-content h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.3;
}

.blog-content p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.blog-link {
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ===== ARTICLE ===== */
.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content h1 {
    font-size: 2.5rem;
    margin-bottom: 24px;
    line-height: 1.2;
}

.article-meta {
    color: var(--text-gray);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.article-content h2 {
    font-size: 1.75rem;
    margin: 40px 0 20px;
}

.article-content p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-gray);
}

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
    color: var(--text-gray);
}

.article-content li {
    margin-bottom: 8px;
}

.article-content strong {
    color: var(--text-dark);
}

.article-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.article-nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
}

.article-nav-link.prev {
    margin-right: auto;
}

.article-nav-link.next {
    margin-left: auto;
}

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

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

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

 /* ===== UTILITY CLASSES ===== */
 .mt-40 { margin-top: 40px; }
 .text-center { text-align: center; }

 /* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .nav.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-floating {
        bottom: 16px;
        right: 16px;
        padding: 14px 28px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

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

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}