/* Reset & Base Variables */
:root {
    --bg-light: #F5F5F5;
    --text-dark: #1A1A1A;
    --accent-yellow: #FACC15;
    --accent-blue: #3B82F6;
    --accent-green: #22C55E;
    --accent-red: #EF4444;
    --border-dark: #1A1A1A;
    
    --shadow-default: 6px 6px 0px var(--border-dark);
    --shadow-hover: 2px 2px 0px var(--border-dark);
    --border-thick: 3px solid var(--border-dark);
    --border-thin: 2px solid var(--border-dark);
    
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, .logo {
    font-family: var(--font-heading);
    color: var(--border-dark);
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.highlight {
    background-color: var(--accent-yellow);
    padding: 0 8px;
    display: inline-block;
}

.highlight-blue {
    background-color: var(--accent-blue);
    color: white;
    padding: 0 8px;
    display: inline-block;
}

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    border: var(--border-thick);
    border-radius: 8px;
    box-shadow: var(--shadow-default);
    transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

.btn:hover {
    transform: translate(4px, 4px);
    box-shadow: var(--shadow-hover);
}

.btn-primary {
    background-color: var(--accent-yellow);
    color: var(--text-dark);
}

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

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 5%;
    background-color: var(--bg-light);
    border-bottom: var(--border-thick);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.logo span {
    color: var(--accent-blue);
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: border-bottom 0.2s;
}

.nav-links a:hover:not(.btn) {
    border-bottom: 2px solid var(--text-dark);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    padding: 100px 5%;
    align-items: center;
    min-height: 85vh;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background-color: white;
    border: var(--border-thin);
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 24px;
    box-shadow: 3px 3px 0px var(--border-dark);
}

.hero-content h1 {
    font-size: 4.5rem;
    margin-bottom: 24px;
    font-weight: 800;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 540px;
}

.hero-ctas {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.social-proof {
    font-size: 0.875rem;
    font-weight: 600;
    color: #666;
}

/* Mockup UI */
.mockup-frame {
    background-color: white;
    border: var(--border-thick);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 12px 12px 0px var(--border-dark);
    aspect-ratio: 9/16;
    max-width: 380px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
    transform: rotate(2deg);
    transition: transform 0.3s ease;
}

.mockup-frame:hover {
    transform: rotate(0deg);
}

.mockup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.m-title {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
}

.m-stats {
    background-color: var(--bg-light);
    border: var(--border-thin);
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.8rem;
}

.matrix-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 16px;
    flex: 1;
}

.quadrant {
    border: var(--border-thin);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 4px 4px 0px var(--border-dark);
}

.q-icon {
    font-size: 1.5rem;
    font-weight: 900;
}

.q-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.q-green { background-color: #E8F8F0; border-color: var(--accent-green); box-shadow: 4px 4px 0px var(--accent-green); }
.q-yellow { background-color: #FEF5E7; border-color: #D68910; box-shadow: 4px 4px 0px #D68910;}
.q-blue { background-color: #EBF5FB; border-color: var(--accent-blue); box-shadow: 4px 4px 0px var(--accent-blue);}
.q-red { background-color: #FDECEA; border-color: var(--accent-red); box-shadow: 4px 4px 0px var(--accent-red);}


/* Features Section */
.features {
    padding: 100px 5%;
    border-top: var(--border-thick);
    background-color: white;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.feature-card {
    padding: 40px 32px;
    border: var(--border-thick);
    border-radius: 16px;
    background-color: var(--bg-light);
    box-shadow: 8px 8px 0px var(--border-dark);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translate(-4px, -4px);
    box-shadow: 12px 12px 0px var(--border-dark);
}

.f-icon {
    font-size: 2.5rem;
    margin-bottom: 24px;
    background: white;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: var(--border-thin);
    border-radius: 12px;
    box-shadow: 3px 3px 0px var(--border-dark);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.f-yellow { background-color: #FEF5E7; }
.f-blue { background-color: #EBF5FB; }
.f-green { background-color: #E8F8F0; }
.f-red { background-color: #FDECEA; }

/* Support Section */
.support {
    padding: 100px 5%;
    border-top: var(--border-thick);
    background-image: radial-gradient(#ccc 1px, transparent 1px);
    background-size: 20px 20px;
}

.support-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    background: white;
    padding: 64px;
    border: var(--border-thick);
    border-radius: 24px;
    box-shadow: 12px 12px 0px var(--border-dark);
}

.support-content h2 {
    font-size: 3rem;
    margin-bottom: 24px;
}

.support-content p {
    font-size: 1.125rem;
    margin-bottom: 48px;
}

/* FAQs */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    border: var(--border-thick);
    border-radius: 8px;
    background-color: var(--bg-light);
    box-shadow: 4px 4px 0px var(--border-dark);
    overflow: hidden;
}

.faq-item summary {
    padding: 20px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    list-style: none;
    position: relative;
    padding-right: 40px;
}

.faq-item summary::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
}

.faq-item[open] summary::after {
    content: '-';
}

.faq-answer {
    padding: 0 20px 20px;
    border-top: 2px solid rgba(0,0,0,0.1);
    margin-top: 10px;
    padding-top: 10px;
}

/* Contact Form */
.contact-form {
    background-color: var(--accent-yellow);
    padding: 40px;
    border: var(--border-thick);
    border-radius: 16px;
    box-shadow: 8px 8px 0px var(--border-dark);
}

.contact-form h3 {
    font-size: 2rem;
    margin-bottom: 32px;
}

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

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: var(--border-thick);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    background-color: white;
    transition: box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    box-shadow: 4px 4px 0px var(--border-dark);
}

/* Footer */
.footer {
    background-color: var(--border-dark);
    color: white;
    padding: 64px 5% 32px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 64px;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    gap: 64px;
}

.link-group h4 {
    color: var(--accent-yellow);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.link-group a {
    display: block;
    color: white;
    text-decoration: none;
    margin-bottom: 12px;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.link-group a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.2);
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 64px;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }
    
    .hero-content p {
        margin: 0 auto 32px;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .support-container {
        grid-template-columns: 1fr;
        padding: 32px;
    }
    
    .mockup-frame {
        transform: rotate(0);
    }
}

@media (max-width: 768px) {
    .nav-links a:not(.btn) {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .btn-large {
        width: 100%;
    }
}