:root {
    --bg-color: #FAFAFA;
    --text-color: #1A1A1A;
    --accent-color: #3B82F6;
    --secondary-text: #666666;
    --border-color: #E5E5E5;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s ease;
}

ul {
    list-style: none;
}

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

/* Utilities */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 50px;
    /* More rounded for modern feel */
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    font-size: 0.95rem;
    letter-spacing: -0.01em;
}

.btn-primary {
    background-color: var(--text-color);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background-color: black;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* Header */
.header {
    padding: 2rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(250, 250, 250, 0.9);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
    letter-spacing: -0.03em;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav a:not(.btn) {
    color: var(--secondary-text);
    font-size: 0.95rem;
}

.nav a:not(.btn):hover {
    color: var(--text-color);
}

/* Hero */
.hero {
    padding: 6rem 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary-text);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-image img {
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    /* Soft shadow for depth */
}

/* Features */
.features {
    padding: 6rem 0;
    background-color: white;
    /* Subtle contrast */
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.section-header h2 {
    font-size: 2.5rem;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--secondary-text);
    font-size: 1.125rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 16px;
    background-color: var(--bg-color);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--secondary-text);
    font-size: 0.95rem;
}

/* How it Works */
.how-it-works {
    padding: 6rem 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.step-item {
    position: relative;
}

.step-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: #E5E5E5;
    /* Watermark style */
    margin-bottom: 0.5rem;
    line-height: 1;
}

.step-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.step-item p {
    color: var(--secondary-text);
}

/* CTA */
.cta {
    padding: 8rem 0;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-color) 0%, #F0F0F0 100%);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    letter-spacing: -0.03em;
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
}

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

.footer-brand .logo {
    display: block;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--secondary-text);
    font-size: 0.875rem;
}

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

.footer-links a {
    color: var(--secondary-text);
    font-size: 0.875rem;
}

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

/* Mobile Responsive */
@media (max-width: 768px) {

    .hero-container,
    .feature-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 4rem 0;
        text-align: center;
    }

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

    .hero-image {
        order: -1;
        /* Image on top on mobile */
        margin-bottom: 2rem;
    }

    .nav {
        display: none;
        /* Simple hiding for now, normally would make hamburger */
    }

    .footer-container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

/* Demo/FAQ Styles */
.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.shortcut-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.keys {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    align-items: center;
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.key {
    background: #F3F4F6;
    border: 1px solid #E5E7EB;
    border-radius: 6px;
    padding: 0.25rem 0.75rem;
    font-family: monospace;
    font-weight: 600;
    color: var(--text-color);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.faq-list {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.faq-question .icon {
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding-right: 1rem;
}

.faq-answer p {
    padding-bottom: 1.5rem;
    color: var(--secondary-text);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    /* Approximate height for transition */
}

.faq-item.active .icon {
    transform: rotate(45deg);
}

@media (max-width: 768px) {
    .shortcuts-grid {
        grid-template-columns: 1fr;
    }
}