/* === GLOBAL BACKGROUND & LAYOUT === */
body {
    font-family: Arial, sans-serif;
    margin: 30px;
    display: flex;
    gap: 40px;

    background-image: url("/pictures/background.jpg");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;

    backdrop-filter: brightness(0.85);
}

/* === GLASS PANELS === */
#calendar, #day-details {
    width: 360px;
    padding: 20px;
    border-radius: 16px;

    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px) brightness(1.1);
    -webkit-backdrop-filter: blur(12px) brightness(1.1);

    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

/* === HEADER === */
#calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
}

#admin {
    margin: 0 10px;
}

#admin-button {
    padding: 6px 12px;
    cursor: pointer;
}

#calendar-header button {
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 8px;
    border: none;

    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    font-weight: bold;

    transition: 0.2s;
}

#calendar-header button:hover {
    background: rgba(255, 255, 255, 0.4);
}

#month-label {
    font-size: 22px;
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 6px rgba(0,0,0,0.4);
    text-transform: capitalize;
}

/* === CALENDAR GRID === */
#calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.day {
    padding: 12px;
    text-align: center;
    border-radius: 10px;
    min-height: 45px;
    font-size: 16px;
    font-weight: bold;

    transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

/* nieaktywne dni */
.day.inactive {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.4);
    cursor: default;
}

/* aktywne dni */
.day.active {
    background: rgba(255, 180, 80, 0.35);
    color: #fff;
    border: 1px solid rgba(255, 200, 120, 0.6);
    box-shadow: 0 0 6px rgba(255, 150, 50, 0.4);
    cursor: pointer;
}

.day.active:hover {
    transform: scale(1.12);
    background: rgba(255, 180, 80, 0.65);
    box-shadow: 0 0 12px rgba(255, 150, 50, 0.6);
}

/* === DAY DETAILS === */
#selected-date {
    color: #fff;
    text-shadow: 0 0 6px rgba(0,0,0,0.4);
    margin-bottom: 15px;
}

/* === SLOT CARDS === */
.slot {
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 10px;

    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);

    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);

    transition: transform 0.25s ease, background 0.25s ease;
}

.slot:hover {
    transform: scale(1.03);
    background: rgba(255, 255, 255, 0.28);
}

.slot strong {
    color: #ffe0b0;
}

/* === THEME TOGGLE BUTTON === */
#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;

    background: rgba(255, 255, 255, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);

    color: #fff;
    font-size: 22px;
    padding: 10px 14px;
    border-radius: 50%;
    cursor: pointer;

    transition: 0.3s ease;
    z-index: 999;
}

#theme-toggle:hover {
    background: rgba(255, 255, 255, 0.45);
    transform: scale(1.15) rotate(10deg);
}

/* === DARK MODE === */
body.dark {
    backdrop-filter: brightness(0.55);
}

body.dark #calendar,
body.dark #day-details {
    background: rgba(0, 0, 0, 0.35);
    border-color: rgba(255, 255, 255, 0.15);
}

body.dark #month-label,
body.dark #selected-date {
    color: #ffe0b0;
}

body.dark .day.inactive {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.25);
}

body.dark .day.active {
    background: rgba(255, 140, 40, 0.45);
    border-color: rgba(255, 180, 80, 0.5);
}

body.dark .slot {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
}

body.dark #theme-toggle {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}