:root {
    --bg-color: #ffffff;
    --text-color: #1d1d1f;
    --accent-color: #0071e3;
}

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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    padding: 0;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: color 0.2s ease;
}

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

nav a.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 2px;
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 2rem;
    text-align: center;
}

main h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

main p {
    font-size: 1.125rem;
    color: #515154;
    margin-bottom: 1.5em;
}

footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.875rem;
    color: #6e6e73;
}

/* Tools & Apps page styles */
.tools-container, .apps-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    text-align: left;
}

.tools-container h2, .apps-container h2 {
    text-align: center;
    margin-bottom: 0.5rem;
}

.page-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 2rem;
}

/* Accordion styles */
.accordion {
    border: 1px solid #e5e5e7;
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: #f5f5f7;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
}

.accordion-header:hover {
    background: #e8e8ed;
}

.accordion-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
    flex: none;
}

.accordion-header .count {
    font-size: 0.875rem;
    color: #6e6e73;
    margin-left: 0.75rem;
    flex: none;
}

.accordion-header .chevron {
    font-size: 1.25rem;
    color: #86868b;
    transition: transform 0.3s ease;
    flex: none;
}

.accordion.open .accordion-header .chevron {
    transform: rotate(180deg);
}

.accordion-content {
    display: none;
    padding: 1.5rem;
    background: #fff;
}

.accordion.open .accordion-content {
    display: block;
}

/* Card grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.card {
    border: 1px solid #e5e5e7;
    border-radius: 10px;
    padding: 1.25rem;
    background: #fff;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    gap: 0.5rem;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    flex: none;
}

.card-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.card-title a:hover {
    color: var(--accent-color);
}

.card-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    background: #f0f0f5;
    color: #515154;
    border-radius: 4px;
    white-space: nowrap;
    flex: none;
}

.card-description {
    font-size: 0.875rem;
    color: #515154;
    line-height: 1.5;
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tools-container, .apps-container {
        padding: 1rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .accordion-header {
        padding: 0.875rem 1rem;
    }

    .accordion-content {
        padding: 1rem;
    }
}