:root {
    --primary-color: #0078d4;
    --secondary-color: #50e6ff;
    --bg-color: #f3f2f1;
    --card-bg: #ffffff;
    --text-color: #323130;
    --text-muted: #605e5c;
    --border-color: #edebe9;
    --success-color: #107c10;
    --container-width: 1000px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

header {
    background-color: var(--primary-color);
    color: white;
    padding: 40px 0;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.language-switcher {
    margin-top: 20px;
}

.language-switcher select {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: white;
    cursor: pointer;
}

.language-switcher select option {
    color: #323130;
}

.section {
    padding: 40px 0;
}

h2 {
    margin-bottom: 30px;
    text-align: center;
}

/* Roles Grid */
.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.role-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.role-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.role-card .icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.role-card h3 {
    font-size: 1.1rem;
}

/* Sticky Header */
.sticky-header {
    position: sticky;
    top: 0;
    background: var(--bg-color);
    padding: 20px 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.role-info {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.progress-container {
    flex-grow: 1;
    display: flex;
    align-items: center;
    gap: 15px;
}

.progress-bar-bg {
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    flex-grow: 1;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--success-color);
    width: 0%;
    transition: width 0.3s;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}

#search-input {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    flex-grow: 1;
}

#category-filter {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.9rem;
}

/* Tools Grid */
.tool-group {
    margin-bottom: 40px;
}

.tool-group h3 {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.tool-card.completed {
    border-left: 5px solid var(--success-color);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.tool-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.tool-name {
    font-weight: bold;
    font-size: 1.2rem;
    cursor: pointer;
}

.tool-name:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.tool-description {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 15px;
    flex-grow: 1;
}

.tool-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 12px;
    background: #e1dfdd;
}

.badge.os { background: #dff6dd; color: #107c10; }
.badge.cat { background: #deecf9; color: #0078d4; }

.btn-primary, .btn-secondary {
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    display: inline-block;
    text-align: center;
}

.btn-primary { background: var(--primary-color); color: white; }
.btn-primary:hover { background: #005a9e; }
.btn-secondary { background: #edebe9; color: var(--text-color); }
.btn-secondary:hover { background: #e1dfdd; }

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 30px;
    border-radius: 8px;
    max-width: 600px;
    position: relative;
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.modal-info { margin: 20px 0; }
.modal-info p { margin-bottom: 10px; }
.modal-actions { display: flex; gap: 10px; margin-top: 20px; }

footer {
    background: #323130;
    color: white;
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
}

footer nav { margin-top: 10px; }
footer nav a { color: var(--secondary-color); text-decoration: none; }

@media (max-width: 600px) {
    .sticky-header { position: relative; }
    .role-info { flex-direction: column; align-items: flex-start; }
    .controls { flex-direction: column; align-items: stretch; }
}