/* =========================================================
   MERGE AUDIO
========================================================= */

.merge-audio-editor {

    width: 100%;

    box-sizing: border-box;
}


/* =========================================================
   SUMMARY
========================================================= */

.merge-audio-summary {

    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 15px;

    margin-bottom: 22px;
}


.merge-audio-counter {

    font-size: 22px;

    font-weight: 700;

    color: var(--violet);
}


.merge-secondary-btn {

    padding: 8px 15px;

    border-radius: 10px;

    border: 1px solid #d1d5db;

    background: #ffffff;

    font-weight: 600;

    cursor: pointer;

    transition:
        transform 0.2s ease,
        opacity 0.2s ease;
}


.merge-secondary-btn:not(:disabled):hover {

    transform: scale(1.03);
}


.merge-secondary-btn:disabled {

    opacity: 0.45;

    cursor: not-allowed;
}


/* =========================================================
   SECTIONS
========================================================= */

.merge-section {

    position: relative;

    z-index: 1;

    margin-bottom: 25px;

    padding: 18px;

    border: 1px solid #ddd6fe;

    border-radius: 14px;

    background: var(--submenu-bg);

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

.merge-section:hover {

    background: #f0fdf4;

    border-color: #86efac;

    box-shadow:
        0 5px 18px
        rgba(4, 120, 87, 0.08);

    transform: translateY(-1px);
}

.merge-section:hover,
.merge-section.help-open {

    z-index: 20;
}

.merge-section-title {

    margin-bottom: 7px;

    font-size: 17px;

    font-weight: 750;

    color: var(--green-text);
}


/* =========================================================
   SECTION TITLE + HELP
========================================================= */

.merge-section-heading {

    position: relative;

    display: flex;

    align-items: center;

    width: fit-content;

    gap: 8px;

    margin-bottom: 7px;
}


.merge-section-heading .merge-section-title {

    margin-bottom: 0;
}


/* =========================================================
   HELP BUTTON
========================================================= */

.merge-help-wrap {

    display: inline-flex;

    align-items: center;
}


.merge-help-btn {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    width: 22px;

    height: 22px;

    padding: 0;

    border: 1.5px solid var(--violet);

    border-radius: 50%;

    background: #ffffff;

    color: var(--violet);

    font-size: 13px;

    font-weight: 900;

    line-height: 1;

    cursor: help;

    transition:
        background 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}


.merge-help-btn:hover,
.merge-help-wrap.open .merge-help-btn {

    background: var(--violet);

    color: #ffffff;

    transform: scale(1.08);

    box-shadow:
        0 3px 10px
        rgba(0, 0, 0, 0.12);
}


.merge-help-btn:focus-visible {

    outline: 2px solid var(--violet);

    outline-offset: 3px;
}


/* =========================================================
   HELP POPOVER
========================================================= */

.merge-help-popover {

    position: absolute;

    z-index: 50;

    top: calc(100% + 8px);

    left: 0;

    width: min(340px, 80vw);

    box-sizing: border-box;

    padding: 14px 16px;

    border: 1px solid #ddd6fe;

    border-radius: 12px;

    background: #ffffff;

    box-shadow:
        0 10px 28px
        rgba(0, 0, 0, 0.14);

    color: #374151;

    opacity: 0;

    visibility: hidden;

    pointer-events: none;

    transform:
        translateY(-6px)
        scale(0.98);

    transition:
        opacity 0.2s ease,
        visibility 0.2s ease,
        transform 0.2s ease;
}


/*
 * Desktop hover
 * +
 * mobile / click state
 */

.merge-help-wrap:hover
.merge-help-popover,

.merge-help-wrap.open
.merge-help-popover {

    opacity: 1;

    visibility: visible;

    pointer-events: auto;

    transform:
        translateY(0)
        scale(1);
}


/* =========================================================
   HELP CONTENT
========================================================= */

.merge-help-item {

    display: flex;

    flex-direction: column;

    gap: 3px;
}


.merge-help-item
+ .merge-help-item {

    margin-top: 11px;

    padding-top: 11px;

    border-top: 1px solid #eeeafc;
}


.merge-help-item strong {

    color: var(--violet);

    font-size: 13px;

    font-weight: 800;
}


.merge-help-item span {

    font-size: 13px;

    line-height: 1.45;

    color: #4b5563;
}


/* =========================================================
   SUB-SETTING HELP
========================================================= */

.merge-setting-label-group {

    display: flex;

    flex-direction: column;

    gap: 3px;
}


.merge-setting-label-group label {

    font-weight: 650;
}


.merge-inline-help {

    font-size: 12px;

    line-height: 1.4;

    color: #6b7280;
}


.merge-section-help,
.merge-format-help {

    margin-bottom: 14px;

    font-size: 13px;

    color: #6b7280;
}


/* =========================================================
   EMPTY
========================================================= */

.merge-audio-empty {

    padding: 22px;

    border: 1px dashed #d1d5db;

    border-radius: 12px;

    text-align: center;

    color: #6b7280;

    background: #f9fafb;
}


/* =========================================================
   FILE LIST
========================================================= */

.merge-audio-list {

    display: flex;

    flex-direction: column;

    gap: 10px;
}


.merge-audio-item {

    display: grid;

    grid-template-columns:
        auto
        minmax(0, 1fr)
        auto;

    align-items: center;

    gap: 14px;

    padding: 12px 14px;

    border: 1px solid #e5e7eb;

    border-radius: 12px;

    background: #ffffff;

    cursor: grab;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        opacity 0.2s ease;
}


.merge-audio-item:hover {

    box-shadow:
        0 5px 18px
        rgba(0, 0, 0, 0.08);
}


.merge-audio-item.dragging {

    opacity: 0.5;
}


.merge-audio-item.drag-over {

    transform: scale(1.015);

    border-color: var(--violet);
}


.merge-audio-item.locked {

    cursor: default;
}


.merge-drag-handle {

    min-width: 30px;

    text-align: center;

    font-size: 20px;

    font-weight: 900;

    color: #9ca3af;

    user-select: none;
}


.merge-file-info {

    min-width: 0;
}


.merge-file-name {

    overflow: hidden;

    white-space: nowrap;

    text-overflow: ellipsis;

    font-weight: 700;
}


.merge-file-meta {

    margin-top: 3px;

    font-size: 13px;

    color: #6b7280;
}


.merge-file-actions {

    display: flex;

    align-items: center;

    gap: 7px;
}


.merge-file-action {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    min-width: 38px;

    height: 36px;

    padding: 0 10px;

    border: 1px solid #d1d5db;

    border-radius: 9px;

    background: #ffffff;

    cursor: pointer;
}


.merge-file-action:disabled {

    opacity: 0.4;

    cursor: not-allowed;
}


.merge-file-action svg {

    width: 18px;

    height: 18px;
}


/* =========================================================
   CHOICES
========================================================= */

.merge-choice-group {

    display: flex;

    flex-wrap: wrap;

    gap: 10px;
}


.merge-choice-btn {

    padding: 9px 16px;

    border-radius: 10px;

    border: 1px solid #d1d5db;

    background: #ffffff;

    font-weight: 650;

    cursor: pointer;
}


.merge-choice-btn.active {

    border-color: var(--violet);

    background: var(--violet-light);
}


.merge-choice-btn:disabled {

    opacity: 0.45;

    cursor: not-allowed;
}


/* =========================================================
   SUB SETTINGS
========================================================= */

.merge-sub-setting {

    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 15px;

    margin-top: 16px;

    padding-top: 15px;

    border-top: 1px solid #e5e7eb;
}


.merge-sub-setting.hidden {

    display: none;
}


.merge-number-control {

    display: inline-flex;

    align-items: center;

    gap: 7px;
}


.merge-number-control input {

    width: 90px;

    box-sizing: border-box;

    padding: 8px 9px;

    border: 1px solid #d1d5db;

    border-radius: 9px;

    font: inherit;
}


/* =========================================================
   FADES
========================================================= */

.merge-fade-grid {

    display: flex;

    flex-direction: column;

    gap: 12px;
}


.merge-fade-row {

    display: flex;

    justify-content: space-between;

    align-items: center;

    gap: 15px;
}


.merge-check-label {

    display: inline-flex;

    align-items: center;

    gap: 9px;

    cursor: pointer;
}


/* =========================================================
   FORMAT
========================================================= */

.merge-output-format {

    width: 100%;

    max-width: 320px;

    padding: 10px 12px;

    border: 1px solid #d1d5db;

    border-radius: 10px;

    font: inherit;

    background: #ffffff;
}


/* =========================================================
   DURATION
========================================================= */

.merge-duration-section {

    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 15px;

    padding: 14px 16px;

    border: 1px solid #ddd6fe;

    border-radius: 12px;

    background: var(--submenu-bg);
}


.merge-duration-section strong {

    color: var(--green-text);

    font-weight: 800;
}


.merge-duration-section {

    font-weight: 700;

    color: var(--green-text);
}

/* =========================================================
   VALIDATION
========================================================= */

.merge-validation {

    padding: 12px 14px;

    border-radius: 10px;

    background: #f3f4f6;

    color: #6b7280;

    font-weight: 600;
}


.merge-validation.valid {

    background: var(--green-hover);

    color: var(--green-text);
}


.merge-validation.error {

    background: #fee2e2;

    color: #991b1b;
}


/* =========================================================
   RESULT
========================================================= */

.merge-audio-result {

    display: flex;

    justify-content: space-between;

    align-items: center;

    gap: 18px;

    margin-top: 24px;

    padding: 18px;

    border: 1px solid var(--green-text);

    border-radius: 14px;

    background: var(--green-hover);
}


.merge-audio-result.hidden {

    display: none;
}

/* =========================================================
   PREVIOUS / STALE RESULT
========================================================= */

.merge-audio-result.stale {

    border-color: #c2410c;

    background: #fff7ed;

    box-shadow:
        0 0 0 2px rgba(194, 65, 12, 0.08);
}


/* MESSAGE D'AVERTISSEMENT */

.merge-audio-result.stale #mergeAudioResultSize {

    display: inline-flex;

    align-items: center;

    gap: 7px;

    width: fit-content;

    margin-top: 4px;

    padding: 6px 10px;

    border-radius: 8px;

    background: #ffedd5;

    color: #9a3412;

    font-weight: 800;

    line-height: 1.3;
}


/* TRIANGLE D'ALERTE */

.merge-result-warning-icon {

    width: 18px;

    height: 18px;

    flex-shrink: 0;

    color: #c2410c;

    stroke-width: 2.5;
}

.merge-result-info { 

    display: flex; 

    flex-direction: column; 

    gap: 4px; 
}

.merge-result-title {

    color: var(--violet);

    font-size: 20px;
}


.merge-result-download {

    display: inline-flex;

    align-items: center;

    gap: 8px;

    padding: 10px 16px;

    border: none;

    border-radius: 10px;

    background: var(--violet);

    color: #ffffff;

    font-weight: 700;

    cursor: pointer;

    position: relative;

    overflow: hidden;

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


/* =========================================================
   DOWNLOAD RESULT — HOVER
========================================================= */

.merge-result-download:hover {

    transform: scale(1.05);

    box-shadow:
        0 5px 14px
        rgba(0, 0, 0, 0.18);
}


/* =========================================================
   DOWNLOAD RESULT — SHINE
========================================================= */

.merge-result-download::before {

    content: "";

    position: absolute;

    top: 0;

    left: -75%;

    width: 50%;

    height: 100%;

    background:
        linear-gradient(
            120deg,
            rgba(255, 255, 255, 0) 0%,
            rgba(255, 255, 255, 0.55) 50%,
            rgba(255, 255, 255, 0) 100%
        );

    transform: skewX(-20deg);
}


.merge-result-download:hover::before {

    animation:
        merge-result-download-shine
        0.7s
        forwards;
}


@keyframes merge-result-download-shine {

    0% {
        left: -75%;
    }

    100% {
        left: 125%;
    }
}


.merge-result-download svg {

    width: 19px;

    height: 19px;
}


/* =========================================================
   RESPONSIVE
========================================================= */

@media (max-width: 700px) {

    .merge-audio-summary,
    .merge-fade-row,
    .merge-sub-setting,
    .merge-audio-result {

        align-items: stretch;

        flex-direction: column;
    }


    .merge-audio-item {

        grid-template-columns:
            auto
            minmax(0, 1fr);
    }


    .merge-file-actions {

        grid-column:
            1 / -1;

        justify-content: flex-end;
    }


    .merge-output-format {

        max-width: none;
    }

}