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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
    color: white;
    padding: 50px 30px;
    text-align: center;
}

.header h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.header p {
    font-size: 18px;
    opacity: 0.9;
}

.content {
    padding: 40px 30px;
}

/* Search Section */
.search-section {
    margin-bottom: 30px;
}

.search-input {
    width: 100%;
    padding: 18px 20px;
    font-size: 18px;
    border: 3px solid #e0e0e0;
    border-radius: 12px;
    transition: all 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #4285f4;
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

.search-hint {
    margin-top: 8px;
    font-size: 14px;
    color: #666;
}

/* Filter Section */
.filter-section {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.filter-btn {
    padding: 12px 24px;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: #666;
}

.filter-btn:hover {
    border-color: #4285f4;
    color: #4285f4;
}

.filter-btn.active {
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
    color: white;
    border-color: transparent;
}

/* Glossary List */
.glossary-list {
    display: grid;
    gap: 25px;
}

.term-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.term-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: #4285f4;
}

.term-card.hidden {
    display: none;
}

.term-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 15px;
}

.term-title {
    color: #333;
    font-size: 22px;
    flex: 1;
}

.term-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    flex-shrink: 0;
}

.term-badge.basic {
    background: #e3f2fd;
    color: #1976d2;
}

.term-badge.metrics {
    background: #e8f5e9;
    color: #388e3c;
}

.term-badge.targeting {
    background: #fff3e0;
    color: #f57c00;
}

.term-badge.bidding {
    background: #f3e5f5;
    color: #7b1fa2;
}

.term-badge.optimization {
    background: #fce4ec;
    color: #c2185b;
}

.term-definition {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
}

.term-example {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #4285f4;
    margin-top: 15px;
}

.term-example strong {
    color: #333;
    display: block;
    margin-bottom: 8px;
}

.term-formula {
    background: #fff9c4;
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #fbc02d;
    margin: 15px 0;
    font-family: 'Courier New', monospace;
}

.term-formula strong {
    color: #333;
    display: block;
    margin-bottom: 8px;
}

.term-types {
    margin-top: 15px;
}

.match-type {
    background: #f5f5f5;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.match-type strong {
    color: #333;
    display: block;
    margin-bottom: 5px;
}

.match-type p {
    color: #666;
    font-size: 14px;
    margin-top: 5px;
}

.term-factors {
    background: #e8f5e9;
    padding: 15px;
    border-radius: 10px;
    margin-top: 15px;
}

.term-factors strong {
    color: #333;
    display: block;
    margin-bottom: 10px;
}

.term-factors ul {
    list-style: none;
    margin-left: 0;
}

.term-factors li {
    padding: 5px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.term-factors li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4caf50;
    font-weight: bold;
}

/* Results Count */
.results-count {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    font-size: 16px;
    color: #666;
    background: #f8f9fa;
    border-radius: 10px;
}

.results-count span {
    font-weight: 700;
    color: #4285f4;
    font-size: 18px;
}

/* Кнопка повернення */
.back-home-container {
    padding: 30px;
    text-align: center;
    background: white;
    border-top: 2px solid #e0e0e0;
}

.back-home-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(66, 133, 244, 0.3);
}

.back-home-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(66, 133, 244, 0.4);
}

.back-arrow {
    font-size: 20px;
    transition: transform 0.3s;
}

.back-home-btn:hover .back-arrow {
    transform: translateX(-5px);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        border-radius: 10px;
    }

    .header {
        padding: 30px 20px;
    }

    .header h1 {
        font-size: 26px;
    }

    .content {
        padding: 30px 20px;
    }

    .term-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .term-title {
        font-size: 20px;
    }

    .filter-section {
        gap: 8px;
    }

    .filter-btn {
        padding: 10px 18px;
        font-size: 14px;
    }
}

/* Адаптив для 420px */
@media (max-width: 420px) {
    body {
        padding: 10px;
    }

    .container {
        border-radius: 15px;
    }

    .header {
        padding: 25px 15px;
    }

    .header h1 {
        font-size: 22px;
        margin-bottom: 8px;
    }

    .header p {
        font-size: 14px;
    }

    .content {
        padding: 25px 15px;
    }

    /* Search Section */
    .search-section {
        margin-bottom: 25px;
    }

    .search-input {
        padding: 15px;
        font-size: 16px;
        border-width: 2px;
    }

    .search-hint {
        font-size: 12px;
    }

    /* Filter Section */
    .filter-section {
        gap: 8px;
        margin-bottom: 30px;
        padding-bottom: 15px;
    }

    .filter-btn {
        padding: 10px 16px;
        font-size: 13px;
        border-width: 2px;
    }

    /* Glossary List */
    .glossary-list {
        gap: 20px;
    }

    .term-card {
        padding: 20px 15px;
        border-width: 2px;
    }

    .term-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .term-title {
        font-size: 18px;
    }

    .term-badge {
        padding: 5px 12px;
        font-size: 11px;
    }

    .term-definition {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 12px;
    }

    .term-example {
        padding: 12px;
        border-left-width: 3px;
    }

    .term-example strong {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .term-example,
    .term-example p {
        font-size: 13px;
    }

    .term-formula {
        padding: 12px;
        border-left-width: 3px;
        font-size: 13px;
    }

    .term-formula strong {
        font-size: 13px;
    }

    .match-type {
        padding: 10px;
        margin-bottom: 8px;
    }

    .match-type strong {
        font-size: 13px;
        margin-bottom: 4px;
    }

    .match-type p {
        font-size: 12px;
    }

    .term-factors {
        padding: 12px;
    }

    .term-factors strong {
        font-size: 13px;
        margin-bottom: 8px;
    }

    .term-factors li {
        font-size: 13px;
        padding: 4px 0;
        padding-left: 20px;
    }

    /* Results Count */
    .results-count {
        padding: 15px;
        font-size: 14px;
    }

    .results-count span {
        font-size: 16px;
    }

    .back-home-container {
        padding: 20px 15px;
    }

    .back-home-btn {
        padding: 12px 20px;
        font-size: 14px;
        gap: 8px;
    }

    .back-arrow {
        font-size: 18px;
    }
}