:root {
    --bs-primary: #16a34a;
    --bs-primary-rgb: 22, 163, 74;
    --fc-modal-surface: #ffffff;
    --fc-modal-surface-soft: #f9fbff;
    --fc-modal-border: #dfe7f4;
    --fc-modal-text: #1f2f48;
    --fc-modal-muted: #5b6f91;
    --fc-modal-shadow: 0 16px 40px rgba(16, 36, 75, 0.18);
}

html, body {
    height: 100%;
    margin: 0;
    overflow-wrap: break-word;
    word-break: break-word;
}

.app-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid #dfe6f1;
}

.app-navbar-inner {
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.app-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: #1f2f48;
    font-weight: 700;
    text-decoration: none;
    margin: 0;
}

.app-brand:hover {
    color: #166534;
}

.app-brand-mark {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: linear-gradient(135deg, #16a34a 0%, #34d399 100%);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.92rem;
}

.app-nav-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.app-nav-link {
    color: #2f5f3f;
    text-decoration: none;
    border: 1px solid #cfe9d6;
    background: #f4fcf7;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.app-nav-link:hover {
    color: #166534;
    background: #e9f9ef;
}

.app-user-badge {
    border: 1px solid #d7e1ef;
    background: #fff;
    color: #4a5f81;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.app-user-badge-btn {
    cursor: pointer;
    font: inherit;
    line-height: inherit;
}

.app-home-account {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.app-home-logout-btn {
    white-space: nowrap;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 1101;
    min-height: 36px;
    padding: 0.45rem 0.82rem;
    border-radius: 12px;
    border: 1px solid #f2c4c4;
    background: #fff4f4;
    color: #b42318;
    box-shadow: 0 10px 24px rgba(16, 36, 75, 0.14);
}

.app-home-logout-btn:hover {
    background: #ffe8e8;
    border-color: #eaa2a2;
    color: #8f1d1d;
}

.app-main {
    padding-top: 76px;
}

main {
    flex: 1 0 auto;
}

footer {
    flex-shrink: 0;
}

.modal-backdrop {
    --bs-backdrop-bg: #13223f;
    --bs-backdrop-opacity: 0.34;
}

.modal:not(#whiteboardModal) .modal-dialog {
    padding-left: 8px;
    padding-right: 8px;
}

.modal:not(#whiteboardModal) .modal-content {
    border: 0;
    border-radius: 18px;
    background: linear-gradient(180deg, var(--fc-modal-surface) 0%, var(--fc-modal-surface-soft) 100%);
    box-shadow: var(--fc-modal-shadow);
    overflow: hidden;
}

.modal:not(#whiteboardModal) .modal-header {
    border-bottom: 0;
    padding: 1rem 1.15rem 0.45rem;
}

.modal:not(#whiteboardModal) .modal-title {
    color: var(--fc-modal-text);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.modal:not(#whiteboardModal) .modal-body {
    padding: 0.8rem 1.15rem 1rem;
}

.modal:not(#whiteboardModal) .modal-footer {
    border-top: 0;
    padding: 0.45rem 1.15rem 1.05rem;
}

.modal:not(#whiteboardModal) .form-control,
.modal:not(#whiteboardModal) .form-select,
.modal:not(#whiteboardModal) textarea.form-control {
    border-color: #d6e0ef;
    border-radius: 11px;
    box-shadow: none;
    color: var(--fc-modal-text);
    background-color: #ffffff;
}

.modal:not(#whiteboardModal) .form-control:focus,
.modal:not(#whiteboardModal) .form-select:focus,
.modal:not(#whiteboardModal) textarea.form-control:focus {
    border-color: #9dbef7;
    box-shadow: 0 0 0 0.2rem rgba(67, 126, 236, 0.16);
}

.modal:not(#whiteboardModal) .text-muted,
.modal:not(#whiteboardModal) .small.text-muted,
.modal:not(#whiteboardModal) .form-label.text-muted {
    color: var(--fc-modal-muted) !important;
}

.modal:not(#whiteboardModal) .btn-primary {
    border-radius: 12px;
    font-weight: 600;
}

.modal:not(#whiteboardModal) .btn-light,
.modal:not(#whiteboardModal) .btn-outline-secondary,
.modal:not(#whiteboardModal) .btn-secondary {
    border-radius: 12px;
}

.modal:not(#whiteboardModal) .modal-content::before {
    content: "";
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, #e6edf9 18%, #e6edf9 82%, transparent 100%);
}

.teacher-conflict-dialog {
    max-width: 520px;
}

.teacher-conflict-card {
    position: relative;
    border: 1px solid #dbe6f3 !important;
    background:
        radial-gradient(circle at top right, rgba(22, 163, 74, 0.12), transparent 34%),
        linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
}

.teacher-conflict-card::before {
    content: none !important;
    display: none !important;
}

.teacher-conflict-hero {
    position: relative;
    margin-top: -1px;
    min-height: 132px;
    background:
        linear-gradient(135deg, rgba(22, 163, 74, 0.14), rgba(59, 130, 246, 0.08));
    border-bottom: 1px solid #e4edf9;
    overflow: hidden;
}

.teacher-conflict-hero__orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(2px);
    opacity: 0.75;
}

.teacher-conflict-hero__orb--one {
    width: 126px;
    height: 126px;
    right: -26px;
    top: -30px;
    background: rgba(22, 163, 74, 0.16);
}

.teacher-conflict-hero__orb--two {
    width: 82px;
    height: 82px;
    left: -18px;
    bottom: -20px;
    background: rgba(59, 130, 246, 0.14);
}

.teacher-conflict-hero__icon {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.teacher-conflict-hero__icon i {
    width: 62px;
    height: 62px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #16a34a 0%, #22c55e 100%);
    color: #fff;
    font-size: 1.6rem;
    box-shadow: 0 14px 30px rgba(22, 163, 74, 0.28);
}

.teacher-conflict-body {
    padding: 1.15rem 1.2rem 1.2rem;
}

.teacher-conflict-title {
    color: var(--fc-modal-text);
    font-weight: 800;
    font-size: 1.15rem;
    line-height: 1.25;
}

.teacher-conflict-text {
    color: var(--fc-modal-muted);
    line-height: 1.55;
    font-size: 0.98rem;
}

.teacher-conflict-actions {
    display: flex;
    flex-direction: column;
    gap: 0.72rem;
}

.teacher-conflict-action {
    min-height: 44px;
    width: 100%;
    border-radius: 14px;
    font-weight: 700;
}

.teacher-conflict-action--secondary {
    color: #314866;
    background: #f4f7fb;
    border-color: #d6e0ef !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.teacher-conflict-action--primary {
    border: 1px solid #cfe9d6 !important;
    background: #effaf3;
    color: #166534;
    box-shadow: none;
    justify-content: center;
    text-align: center;
    gap: 0.35rem;
}

.teacher-conflict-action--primary:hover {
    background: #e7f7ec;
    border-color: #bedec9 !important;
    color: #14532d;
}

.teacher-conflict-action--secondary:hover {
    background: #eef3f9;
    color: #1f2f48;
    border-color: #c9d5e6 !important;
}

#lessonCsatModal .lesson-csat-dialog {
    max-width: 420px;
}

#lessonCsatModal .lesson-csat-content {
    border-radius: 20px;
}

#lessonCsatModal .lesson-csat-title {
    font-size: 1.06rem;
    font-weight: 700;
    color: #1e2f4e;
}

#lessonCsatModal .lesson-csat-question {
    font-size: 0.95rem;
    line-height: 1.45;
    color: #516486;
}

#lessonCsatModal .lesson-csat-stars {
    display: flex;
    width: 100%;
    gap: 0.35rem;
}

#lessonCsatModal .lesson-csat-star-btn {
    flex: 1;
    border: 1px solid #d8e3f4;
    background: #ffffff;
    color: #b7c1d2;
    padding: 0.2rem 0;
    border-radius: 12px;
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

#lessonCsatModal .lesson-csat-star-btn:hover,
#lessonCsatModal .lesson-csat-star-btn:focus-visible {
    background: #f5f8ff;
    border-color: #bfd2f7;
    color: #7f95ba;
    outline: none;
    transform: translateY(-1px);
}

#lessonCsatModal .lesson-csat-star-btn.is-selected {
    border-color: #f6d079;
    background: #fff8e7;
    color: #f2c94c;
}

#lessonCsatModal .lesson-csat-star-icon {
    font-size: clamp(1.8rem, 5.2vw, 2.1rem);
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(15, 23, 42, 0.18));
}

#lessonCsatModal .lesson-csat-comment {
    border-radius: 12px;
    border-color: #d5e1f2;
    font-size: 0.93rem;
}

#lessonCsatModal .lesson-csat-comment:focus {
    border-color: #9dbef7;
    box-shadow: 0 0 0 0.2rem rgba(67, 126, 236, 0.16);
}

.section-title {
    font-weight: 600;
    margin-bottom: 1rem;
}

.confirm-action-overlay {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(16, 36, 75, 0.34);
    backdrop-filter: blur(3px);
}

.confirm-action-modal {
    width: min(380px, 100%);
    border-radius: 18px;
    border: 1px solid #dce6f6;
    background: #ffffff;
    box-shadow: 0 14px 36px rgba(16, 36, 75, 0.16);
    padding: 18px 18px 16px;
    text-align: center;
}

.confirm-action-message {
    margin-bottom: 14px;
    color: #1f2f48;
    font-size: 0.95rem;
    line-height: 1.45;
    font-weight: 600;
}

.confirm-action-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.confirm-action-btn {
    min-height: 38px;
    min-width: 94px;
    border-radius: 999px;
    font-size: 0.86rem;
    font-weight: 700;
    padding: 0.36rem 0.95rem;
    border: 1px solid transparent;
}

.confirm-action-btn-confirm {
    background: #16a34a;
    border-color: #16a34a;
    color: #ffffff;
}

.confirm-action-btn-confirm:hover {
    background: #15803d;
    border-color: #15803d;
    color: #ffffff;
}

.confirm-action-btn-cancel {
    background: #ffffff;
    border-color: #d7e1ef;
    color: #4a5f81;
}

.confirm-action-btn-cancel:hover {
    background: #f8fbff;
    border-color: #cdd9ea;
    color: #2f4568;
}

.confirm-action-btn:focus-visible {
    outline: 2px solid #73b5ff;
    outline-offset: 2px;
}

.drag-handle {
    cursor: grab;
    user-select: none;
}

.drag-handle:active {
    cursor: grabbing;
}

@media (max-width: 575.98px) {
    .app-navbar-inner {
        min-height: 54px;
    }

    .app-brand {
        font-size: 0.96rem;
    }

    .app-brand-mark {
        width: 27px;
        height: 27px;
        border-radius: 9px;
    }

    .app-nav-link {
        font-size: 0.8rem;
    }

    .app-user-badge {
        display: inline-flex;
    }

    .app-main {
        padding-top: 70px;
    }

    .modal:not(#whiteboardModal) .modal-content {
        border-radius: 16px;
    }

    .modal:not(#whiteboardModal) .modal-header {
        padding: 0.9rem 0.9rem 0.35rem;
    }

    .modal:not(#whiteboardModal) .modal-body {
        padding: 0.7rem 0.9rem 0.9rem;
    }

    .modal:not(#whiteboardModal) .modal-footer {
        padding: 0.35rem 0.9rem 0.9rem;
    }

    .confirm-action-modal {
        width: min(360px, 100%);
        border-radius: 16px;
        padding: 15px 14px 14px;
    }

    .confirm-action-message {
        font-size: 0.9rem;
        margin-bottom: 12px;
    }

    .confirm-action-actions {
        gap: 8px;
    }

    .confirm-action-btn {
        min-width: 86px;
    }
}