:root {
    --color-deep-blue: #020826; 
    --color-galaxy-purple: #47407A; 
    --color-matrix-green: #00E8C4; 
    --color-gold-dust: #E6D0AA; 
    --color-soft-light: #A0B9C9; 
    --color-accent-dark: #004d40;
}

body.is-standalone {
    display: block;
    padding: 20px;
    background-color: var(--color-deep-blue);
}

.schedule-container {
    width: 100%;
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background-color: rgba(3, 10, 48, 0.7);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 232, 196, 0.2);
}

h1 {
    color: var(--color-matrix-green);
    text-align: center;
    border-bottom: 2px solid var(--color-gold-dust);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.lecturer-info {
    font-size: 1.1em;
    font-weight: 500;
    color: var(--color-gold-dust);
    padding: 10px 0;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--color-galaxy-purple);
    border-top: 1px solid var(--color-galaxy-purple);
    background-color: rgba(71, 64, 122, 0.1);
    padding-left: 10px;
    border-radius: 4px;
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-matrix-green);
}

.session-info {
    color: var(--color-gold-dust);
    font-size: 1.5em;
    font-weight: bold;
}

.nav-buttons button {
    background-color: var(--color-galaxy-purple);
    color: var(--color-soft-light);
    padding: 8px 15px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
}
.nav-buttons button:hover {
    background-color: #5d5494;
}
.nav-buttons button:disabled {
    background-color: #333;
    color: #666;
    cursor: not-allowed;
}

/* Tabela Planu Zajęć */
.schedule-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    color: var(--color-soft-light);
}
.schedule-table th, .schedule-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--color-galaxy-purple);
}
.schedule-table th {
    background-color: var(--color-galaxy-purple);
    color: var(--color-matrix-green);
    text-transform: uppercase;
    font-size: 0.9em;
}
.schedule-table tbody tr:nth-child(even) {
    background-color: rgba(71, 64, 122, 0.05);
}
.schedule-table tbody tr:hover {
    background-color: rgba(71, 64, 122, 0.2);
}

.day-title {
    color: var(--color-gold-dust);
    background-color: var(--color-galaxy-purple);
    padding: 10px 15px;
    margin-top: 25px;
    margin-bottom: 0;
    border-radius: 8px 8px 0 0;
    font-size: 1.3em;
}

.lesson-subject {
    font-weight: bold;
    color: var(--color-matrix-green);
}

.lesson-groups {
    display: inline-block;
    background-color: var(--color-accent-dark);
    color: #E6D0AA;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8em;
    margin-right: 5px;
}

/* Nowy styl dla kolumny Uwagi (z tagiem Online) */
.online-tag {
    background-color: #ff9800;
    color: var(--color-deep-blue);
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    white-space: nowrap;
}

/* --- JEDNOLITE FILTRY (Styl Przyciskowy dla wszystkich grup) --- */
.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px 30px;
    padding: 15px;
    background-color: rgba(71, 64, 122, 0.2);
    border-radius: 8px;
    margin-bottom: 30px;
}
.filter-group {
    display: flex;
    align-items: center;
    color: var(--color-soft-light);
    font-size: 0.9em;
    flex-wrap: wrap;
}
.group-label {
    font-weight: bold;
    color: var(--color-gold-dust);
    margin-right: 15px;
    flex-shrink: 0;
    margin-bottom: 5px;
}

/* Ukrycie standardowych radio buttonów */
.filter-group input[type="radio"] {
    display: none;
}

/* Styl dla wszystkich przycisków radiowych (LAB, CW, JĘZYK) */
.unified-radio-btn {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    background-color: var(--color-galaxy-purple);
    color: var(--color-soft-light);
    cursor: pointer;
    border: 2px solid transparent;
    margin-right: 8px;
    margin-top: 5px;
    transition: all 0.2s;
    font-weight: 500;
    white-space: nowrap;
}

/* Stan zaznaczenia */
.filter-group input[type="radio"]:checked + .unified-radio-btn {
    background-color: var(--color-matrix-green);
    color: var(--color-deep-blue);
    border-color: var(--color-gold-dust);
    box-shadow: 0 0 8px rgba(0, 232, 196, 0.7);
}

.filter-group input[type="radio"]:hover + .unified-radio-btn {
    border-color: var(--color-matrix-green);
}

/* Styl dla wskaźnika ładowania */
#loading-indicator {
    color: var(--color-matrix-green);
    font-weight: bold;
    font-size: 1.2em;
    text-align: center;
    width: 100%;
    padding: 20px;
}

.back-to-main-btn {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: var(--color-matrix-green);
    color: var(--color-deep-blue);
    padding: 10px 15px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    z-index: 100;
}

/* RESPONSYWNOŚĆ (Mobile First) */
@media (max-width: 768px) {
    .schedule-container {
        margin: 10px;
        padding: 10px;
    }
    .schedule-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .session-info {
        margin-bottom: 10px;
    }
    .nav-buttons {
        width: 100%;
        display: flex;
        justify-content: space-between;
    }
    
    /* Tabela Stacked Table dla małych ekranów */
    .schedule-table, .schedule-table thead, .schedule-table tbody, .schedule-table th, .schedule-table td, .schedule-table tr {
        display: block;
    }
    .schedule-table thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    .schedule-table tr { 
        border: 1px solid var(--color-galaxy-purple);
        margin-bottom: 10px;
        border-radius: 8px;
        overflow: hidden;
    }
    .schedule-table td {
        border: none;
        border-bottom: 1px solid rgba(71, 64, 122, 0.5);
        position: relative;
        padding-left: 50%;
        text-align: right;
    }
    .schedule-table td:before {
        content: attr(data-label);
        position: absolute;
        left: 6px;
        width: 45%;
        padding-right: 10px;
        white-space: nowrap;
        text-align: left;
        font-weight: bold;
        color: var(--color-matrix-green);
    }
    
    .filter-controls {
        flex-direction: column;
        gap: 10px;
    }
    .filter-group {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 10px;
        border-bottom: 1px dashed rgba(230, 208, 170, 0.2);
        padding-bottom: 5px;
    }
    .group-label {
        margin-bottom: 8px;
    }
    .unified-radio-btn {
        margin-right: 10px;
    }
    
    .back-to-main-btn {
        position: static !important;
        display: block;
        text-align: center;
        margin-bottom: 20px;
        width: calc(100% - 40px);
    }
}