.ghw-container { max-width: 1200px; margin: 0 auto; }

.filter-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 15px;
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}
.filter-container label {
    font-size: 1rem;
    align-self: center;
}
.filter-container select, .filter-container input {
    padding: 8px;
    font-size: 0.9rem;
    border-radius: 5px;
    border: 1px solid #ccc;
    background: white;
    cursor: pointer;
    width: 100%;
    max-width: 200px;
}
.filter-container input {
    max-width: 100%;
}
.topic-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.topic-button {
    padding: 8px 16px;
    font-size: 0.9rem;
    border: none;
    border-radius: 20px;
    background: #e0e0e0;
    color: #333;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease;
    touch-action: manipulation;
}
.topic-button.active {
    color: white;
}
.topic-button[data-topic="all"] { background: #e0e0e0; }
.topic-button[data-topic="all"].active { background: #4a90e2; }
.topic-button[data-topic="Technology"] { background: #e0e0e0; }
.topic-button[data-topic="Technology"].active { background: #50c9c3; }
.topic-button[data-topic="Policy"] { background: #e0e0e0; }
.topic-button[data-topic="Policy"].active { background: #f4a261; }
.topic-button[data-topic="Applications"] { background: #e0e0e0; }
.topic-button[data-topic="Applications"].active { background: #2a9d8f; }
.topic-button[data-topic="Innovation"] { background: #e0e0e0; }
.topic-button[data-topic="Innovation"].active { background: #e76f51; }
.topic-button:hover { opacity: 0.9; }
.calendar-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.calendar-container h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    text-align: center;
}
#calendar {
    max-width: 100%;
}
.calendar-day {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    min-height: 80px;
    background: #f9f9f9;
    font-size: 0.8rem;
    overflow-y: auto;
}
.calendar-day.header {
    background: #4a90e2;
    color: white;
    font-weight: bold;
    font-size: 0.9rem;
    padding: 10px;
}
.calendar-day.event {
    background: #e6f3ff;
    cursor: pointer;
}
.calendar-day.event:hover {
    background: #d0e6ff;
}
.calendar-day.past {
    background: #f0f0f0;
    color: #666;
}
.calendar-day.past.event {
    background: #d9e6ff;
}
.calendar-day p {
    margin: 5px 0;
    font-size: 0.75rem;
}
.webinar-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 15px;
}
.webinar-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    position: relative;
    display: none;
}
.webinar-card.show {
    display: block;
}
.webinar-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}
.webinar-card.past {
    background: #f9f9f9;
    opacity: 0.85;
}
.webinar-image {
    width: 100%;
    height: 160px !important;
    object-fit: cover;
    filter: brightness(0.9);
    transition: filter 0.3s ease;
}
.webinar-card:hover .webinar-image {
    filter: brightness(1);
}
.webinar-content {
    padding: 15px;
}
.webinar-title {
    font-size: 1.2rem;
    margin: 0 0 8px;
    color: #4a90e2;
}
.webinar-date {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 8px;
}
.webinar-desc {
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 12px;
}
.register-btn {
    display: inline-block;
    background: #50c9c3;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.9rem;
    transition: background 0.3s ease;
    touch-action: manipulation;
    margin: 5px;
}
.register-btn.view-recording {
    background: #e74c3c;
}
.register-btn:hover {
    background: #4a90e2;
}
.tag {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.8);
    padding: 4px 8px;
    border-radius: 15px;
    font-size: 0.75rem;
    color: #333;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    .filter-container {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 0 10px;
    }
    .filter-container select, .filter-container input {
        max-width: 100%;
        font-size: 0.85rem;
    }
    .topic-buttons {
        gap: 8px;
    }
    .topic-button {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    .calendar-container {
        padding: 10px;
    }
    .calendar-day {
        min-height: 60px;
        font-size: 0.7rem;
        padding: 5px;
    }
    .calendar-day.header {
        font-size: 0.8rem;
        padding: 8px;
    }
    .calendar-day p {
        font-size: 0.65rem;
    }
    .webinar-container {
        grid-template-columns: 1fr;
        gap: 10px;
        margin: 20px auto;
        padding: 0 10px;
    }
    .webinar-card {
        max-width: 100%;
    }
    .webinar-image {
        height: 140px;
    }
    .webinar-title {
        font-size: 1.1rem;
    }
    .webinar-date, .webinar-desc {
        font-size: 0.8rem;
    }
    .register-btn {
        font-size: 0.85rem;
        padding: 7px 14px;
    }
    .tag {
        font-size: 0.7rem;
        padding: 3px 6px;
    }
}
@media (max-width: 480px) {
    .calendar-container h2 {
        font-size: 1.2rem;
    }
    .calendar-day {
        min-height: 50px;
        font-size: 0.65rem;
    }
    .calendar-day.header {
        font-size: 0.75rem;
    }
    .calendar-day p {
        font-size: 0.6rem;
    }
    .webinar-image {
        height: 120px;
    }
    .webinar-title {
        font-size: 1rem;
    }
    .webinar-date, .webinar-desc {
        font-size: 0.75rem;
    }
    .register-btn {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    .topic-button {
        padding: 5px 10px;
        font-size: 0.8rem;
    }
}