:root {
    --bg-color: #f4f7f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --card-bg: #ffffff;
    --blue-accent: #007bff;
    --orange-accent: #ff5722;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    margin: 0;
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.navbar {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.badge {
    background: var(--text-primary);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
}

/* Main Content */
.hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 1rem;
    text-align: center;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.hero-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

/* Card Grid */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 800px;
}

/* Tool Cards */
.tool-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Icon Styles */
.icon-box {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.icon-box svg {
    width: 28px;
    height: 28px;
}

/* Specific Card Colors */
.passport-card .icon-box {
    background-color: #eff6ff;
    color: var(--blue-accent);
}

.pdf-card .icon-box {
    background-color: #fff7ed;
    color: var(--orange-accent);
}

/* Text Styles */
.tool-card h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0 0 1.5rem 0;
    flex: 1; /* Pushes the link to bottom */
}

.link-text {
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.passport-card .link-text { color: var(--blue-accent); }
.pdf-card .link-text { color: var(--orange-accent); }

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Mobile Responsiveness */
@media (max-width: 600px) {
    .hero-content h1 { font-size: 2rem; }
    .tool-grid { grid-template-columns: 1fr; }
}

/* Merge Card Color */
.merge-card .icon-box {
    background-color: #f3f0ff;
    color: #6f42c1;
}

.merge-card .link-text {
    color: #6f42c1;
}