.presentations-main {
    width: 100%;
    max-width: 980px;
    margin: 0 auto;
    padding: 1rem 1rem 2.5rem 1rem;
}

.presentations-card {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.presentations-card--hero {
    text-align: left;
}

.presentations-card--hero p:last-child {
    margin-bottom: 0;
}

.presentations-card--footer p {
    margin: 0;
}

.presentations-card--form {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.subject-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.subject-list li {
    margin: 0;
}

.subject-list-link {
    display: block;
    padding: 1rem 1.1rem;
    border: 1px solid var(--line-color);
    border-radius: 12px;
    background: #fff;
    color: var(--text-color);
    text-decoration: none;
    transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.08s ease;
}

.subject-list-link:hover,
.subject-list-link:focus-visible {
    border-color: var(--link-color);
    background: #f7faff;
    color: var(--text-color);
    text-decoration: none;
}

.subject-list-title {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.subject-list-meta {
    display: block;
    color: var(--muted-color);
    font-size: 0.92rem;
}

.presentations-table {
    min-width: 720px;
}

.presentations-table th,
.presentations-table td {
    vertical-align: top;
}

.slots {
    display: flex;
    gap: 0.45rem;
    flex-wrap: wrap;
    width: 100%;
}

.slot {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.45rem 0.7rem;
    border-radius: 999px;
    font-size: 0.9rem;
    line-height: 1.2;
    text-decoration: none;
    border: 1px solid transparent;
    min-height: 38px;
}

.slot small {
    font-size: 0.84em;
    opacity: 0.9;
}

.slot.free,
.slot.slot-free {
    background: #e8f5ec;
    color: #155b37;
    border-color: #cfe6d6;
}

.slot.free:hover,
.slot.free:focus-visible,
.slot.slot-free:hover,
.slot.slot-free:focus-visible {
    background: #dbefe2;
    color: #11492c;
    text-decoration: none;
}

.slot.occupied,
.slot.slot-occupied {
    background: #f5e3e6;
    color: #8a2130;
    border-color: #ebc8cf;
}

.slot.slot-current {
    background: #fff2cc;
    color: #7a5a00;
    border-color: #ead48a;
    font-weight: 600;
}

.presentation-form .formRow {
    margin-bottom: 1rem;
}

.presentation-form label {
    display: block;
    margin-bottom: 0.45rem;
}

.presentation-form input[type="text"],
.presentation-form input[type="email"] {
    width: 100%;
}

.form-actions-centered {
    justify-content: center;
}

.change-link-box {
    margin: 1rem 0 1.25rem 0;
    padding: 0.9rem 1rem;
    border: 1px dashed var(--line-color);
    border-radius: 12px;
    background: #fff;
    word-break: break-word;
}

.ok-message {
    margin-top: 0.9rem;
    padding: 0.8rem 1rem;
    border: 1px solid #cfe6d6;
    border-radius: 10px;
    background: #edf8f1;
    color: #17663a;
}

.teacher-applet {
    margin-top: 1.5rem;
}

.teacher-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

.teacher-table th,
.teacher-table td {
    border: 1px solid #ddd;
    padding: 0.55rem 0.65rem;
    text-align: left;
    vertical-align: top;
}

.copy-email,
.copy-all {
    cursor: pointer;
}

@media (max-width: 768px) {
    .presentations-main {
        padding: 0.8rem 0.8rem 2rem 0.8rem;
    }

    .subject-list-link {
        padding: 0.9rem 0.95rem;
    }

    .presentations-table {
        min-width: 620px;
    }

    .slot {
        font-size: 0.86rem;
        min-height: 36px;
        padding: 0.42rem 0.62rem;
    }
}

@media (max-width: 480px) {
    .presentations-main {
        padding: 0.7rem 0.7rem 1.5rem 0.7rem;
    }

    .presentations-card {
        margin-top: 0.8rem;
        margin-bottom: 0.8rem;
    }

    .subject-list {
        gap: 0.6rem;
    }

    .subject-list-link {
        border-radius: 10px;
    }

    .presentations-table {
        min-width: 560px;
    }

    .form-actions-centered .button-link,
    .form-actions-centered a.button-link {
        width: 100%;
    }
}