/* QBasic-style text editor: match classic QBasic IDE look */
/* Lock to viewport so the browser window has no scrollbars */
html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
html,
body {
    height: 100%;
    overflow: hidden;
    margin: 0;
}
body {
    padding: 0;
}

.qb-page {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    padding: 0;
    font-family: Consolas, "Courier New", monospace;
}

/* Top menu bar: yellowish-gold, dark text */
.qb-menu-bar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.25rem 0.5rem 0.35rem;
    padding-left: calc(0.5rem + env(safe-area-inset-left));
    padding-right: calc(0.5rem + env(safe-area-inset-right));
    padding-top: calc(0.35rem + env(safe-area-inset-top));
    background: #d4a84b;
    border-bottom: 1px solid #b8922e;
}

.qb-menu-items {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 13px;
    color: #000080;
    font-weight: 600;
}

.qb-menu-file-wrap {
    position: relative;
}

.qb-menu-trigger {
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    color: #000080;
    background: transparent;
    border: none;
    padding: 0.5rem 0.6rem;
    min-height: 44px;
    min-width: 44px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.qb-menu-trigger:hover {
    background: rgba(0, 0, 0, 0.1);
}

.qb-file-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    margin: 0;
    padding: 0.25rem 0;
    list-style: none;
    background: #e8e0b0;
    border: 1px solid #b8922e;
    box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    min-width: 8rem;
    z-index: 10;
    display: none;
}

.qb-file-dropdown.open {
    display: block;
}

.qb-file-dropdown button {
    display: block;
    width: 100%;
    font-family: inherit;
    font-size: 13px;
    color: #000080;
    background: none;
    border: none;
    padding: 0.6rem 1.25rem;
    min-height: 44px;
    box-sizing: border-box;
    text-align: left;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.qb-file-dropdown button:hover {
    background: #d4a84b;
}

.qb-menu-static {
    color: #000080;
}

#qb-file-input {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    overflow: hidden;
}

.qb-doc-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.35rem 0.6rem;
    min-height: 44px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 50%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    background: #e8e8e8;
    color: #000;
    font-size: 12px;
    border: 1px solid #a0a0a0;
    box-shadow: inset 1px 1px 0 #fff;
}

.qb-header-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.qb-menu-btn {
    padding: 0.5rem 0.6rem;
    min-height: 44px;
    min-width: 44px;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #d4a84b;
    color: #000080;
    border: 1px solid #b8922e;
    border-radius: 2px;
    font-size: 1.25rem;
    text-decoration: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.qb-menu-btn:hover {
    background: #c49a3d;
}

/* Editor area: bordered frame, royal blue, light borders */
.qb-editor-frame {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    margin: 0;
    border: 1px solid #808080;
    border-top: 1px solid #c0c0c0;
    border-left: 1px solid #a0a0a0;
    background: #0000aa;
}

#qb-editor {
    flex: 1;
    width: 100%;
    min-height: 0;
    margin: 0;
    padding: 0.5rem 0.75rem;
    padding-left: calc(0.75rem + env(safe-area-inset-left));
    padding-right: calc(0.75rem + env(safe-area-inset-right));
    box-sizing: border-box;
    font-family: Consolas, "Courier New", monospace;
    font-size: 16px;
    line-height: 1.4;
    background: #0000aa;
    color: #00ffff;
    border: none;
    resize: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

#qb-editor::placeholder {
    color: rgba(0, 255, 255, 0.5);
}

#qb-editor:focus {
    outline: none;
}

/* Scrollbars: grey, retro */
#qb-editor::-webkit-scrollbar {
    width: 16px;
    height: 16px;
}

#qb-editor::-webkit-scrollbar-track {
    background: #0000aa;
}

#qb-editor::-webkit-scrollbar-thumb {
    background: #606060;
    border: 1px solid #404040;
}

#qb-editor::-webkit-scrollbar-thumb:hover {
    background: #707070;
}

/* Dotted separator above Immediate */
.qb-immediate-sep {
    height: 0;
    border-top: 2px dotted #6080a0;
    background: #0000aa;
}

/* Immediate bar: same blue, label on right */
.qb-immediate-bar {
    min-height: 1.5rem;
    padding: 0.2rem 0.75rem;
    background: #0000aa;
    color: #00ffff;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.qb-immediate-label {
    color: #00ffff;
}

/* Bottom status bar: light blue/cyan, dark text */
.qb-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0.35rem 0.5rem;
    padding-left: calc(0.5rem + env(safe-area-inset-left));
    padding-right: calc(0.5rem + env(safe-area-inset-right));
    padding-bottom: calc(0.35rem + env(safe-area-inset-bottom));
    background: #55aaff;
    color: #000080;
    font-size: 12px;
    border-top: 1px solid #4090dd;
}

.qb-status-keys {
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.qb-status-pos {
    background: #4080c0;
    color: #fff;
    padding: 0.25rem 0.5rem;
    min-width: 5rem;
    flex-shrink: 0;
    text-align: right;
}

/* Mobile: hide decorative menu text, larger tap targets, compact status */
@media (max-width: 640px) {
    .qb-menu-static {
        display: none;
    }

    .qb-doc-title {
        max-width: 40%;
    }

    .qb-status-bar {
        font-size: 11px;
    }

    .qb-status-keys {
        max-width: 60%;
    }
}

@media (max-width: 380px) {
    .qb-doc-title {
        max-width: 30%;
    }
}