/* ===============================================================================
   LIVE-EDITOR-FULLSCREEN.CSS - DevPanicZone
   ===============================================================================
   Standalone Fullscreen-Layout for Live Code Editor.
   No DPZ-Header/Footer – Editor only + Preview 100vh.
   =============================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
    overflow: hidden;
    /* background-color: var(--bg-body); */
    /* background-color: white; */
    background: linear-gradient(to bottom, var(--bg-secondary) 0%, var(--bg-secondary) 5%, white 5%);
    color: var(--text-primary);
    font-family: var(--font-body);
}

/* ---- Layout: Panels + Toolbar + Preview ---- */

.fs-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* ---- Panels (top, fix height) ---- */

.fs-panels {
    display: flex;
    flex-direction: row;
    gap: 0;
    flex: 0 0 40%;
    min-height: 0;
    border-bottom: 1px solid var(--border-color);
}

.fs-panel {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

.fs-panel.hidden {
    display: none;
}

.fs-panel:last-child {
    border-right: none;
}

.fs-panel-header {
    display: flex;
    align-items: center;
    padding: 0.3rem 0.75rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.fs-panel-lang {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.fs-textarea {
    flex: 1;
    width: 100%;
    font-family: var(--font-code);
    font-size: 0.875rem;
    line-height: 1.6;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border: none;
    resize: none;
    outline: none;
    tab-size: 2;
}

.fs-textarea:focus {
    background-color: var(--bg-secondary);
}

.fs-textarea::placeholder {
    color: var(--text-muted);
}

/* ---- Toolbar (Run-Button + Branding) ---- */

.fs-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 1rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.fs-brand {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.fs-toggle-btn {
    font-family: var(--font-code);
    font-size: 0.8rem;
    padding: 0.3rem 0.85rem;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}

.fs-toggle-btn:hover {
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.fs-toggle-btn.active {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: var(--bg-secondary);
}

.fs-toolbar-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.fs-btn-clear {
    font-family: var(--font-code);
    font-size: 0.875rem;
    padding: 0.3rem 1rem;
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}

.fs-btn-clear:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.fs-btn-clear:active {
    transform: scale(0.97);
}

.fs-btn-run,
.fs-btn-newtab {
    font-family: var(--font-code);
    font-size: 0.875rem;
    padding: 0.3rem 1rem;
    background-color: var(--accent-blue);
    color: var(--bg-secondary);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 150ms ease;
}

.fs-btn-run:hover,
.fs-btn-newtab:hover {
    background-color: var(--accent-blue-hover);
}

.fs-btn-run:active {
    transform: scale(0.97);
}

.fs-btn-newtab:active {
    background-color: var(--accent-blue);
}

/* ---- Preview ---- */

.fs-preview {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

#fsPreviewFrame {
    flex: 1;
    width: 100%;
    border: none;
    display: block;
}

@media (max-width: 767px) {
    .fs-layout {
        height: auto;
        min-height: 100vh;
    }

    .fs-panels {
        flex-direction: column;
        flex: 0 0 50%;
        overflow-y: auto;
    }

    .fs-brand {
        display: none;
    }

    .fs-toolbar {
        justify-content: flex-end;
    }

    .fs-textarea {
        min-height: 160px;
        font-size: 16px;
    }
}