/* Variables */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --container-width: 1100px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
}

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

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    color: #fff !important;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
}

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

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-color) !important;
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-weight: 600;
}

.btn-outline {
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 8px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.1rem;
}

/* Hero */
.hero {
    padding: 100px 0 140px;
    text-align: center;
    background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

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

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Features */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 40px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: 0.3s;
}

.feature-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.icon-box {
    width: 48px;
    height: 48px;
    background: #eff6ff;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.25rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    margin-bottom: 16px;
    font-size: 1.25rem;
}

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

/* Testimonials */
.testimonials {
    padding: 100px 0;
    background: var(--bg-light);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.testimonial-card {
    background: #fff;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.quote {
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: 24px;
    color: var(--text-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.user-info strong {
    display: block;
    font-size: 1rem;
}

.user-info span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: #fff;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand p {
    margin-top: 16px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 80px;
}

.link-group h4 {
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.link-group a {
    display: block;
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: var(--text-color);
}

.social-icons {
    display: flex;
    gap: 16px;
}

.social-icons a {
    font-size: 1.2rem;
    color: var(--text-muted);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 992px) {
    .features-grid, .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    .hero-btns {
        flex-direction: column;
    }
}