:root {
    --bg-color: #0a0c0a;
    --terminal-green: #33ff33;
    --terminal-dim: #11aa11;
    --terminal-dark: #052205;
    --error-red: #ff3333;
    --font-stack: 'Courier New', Courier, monospace;
}

body {
    background-color: var(--bg-color);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    margin: 0;
    padding: 20px;
    overflow: hidden;
    height: calc(100vh - 40px);
}

.crt-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    background-size: 100% 4px, 6px 100%;
    z-index: 9999;
    pointer-events: none;
}

.panel {
    border: 2px solid var(--terminal-green);
    padding: 30px;
    max-width: 450px;
    margin: 100px auto;
    background-color: var(--bg-color);
    box-shadow: 0 0 15px var(--terminal-dark);
}

h2, h3, h4 {
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-bottom: 1px dashed var(--terminal-green);
    padding-bottom: 8px;
}

input, textarea {
    background-color: black;
    border: 1px solid var(--terminal-dim);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
    margin-top: 5px;
}
input:focus, textarea:focus {
    outline: none;
    border-color: var(--terminal-green);
    box-shadow: 0 0 5px var(--terminal-green);
}

button {
    background-color: var(--terminal-dark);
    color: var(--terminal-green);
    border: 1px solid var(--terminal-green);
    font-family: var(--font-stack);
    padding: 10px 20px;
    cursor: pointer;
    text-transform: uppercase;
    margin-top: 15px;
}
button:hover {
    background-color: var(--terminal-green);
    color: black;
}

.hidden { display: none !important; }
.error-msg { color: var(--error-red); margin-top: 15px; font-weight: bold; }

.status-bar {
    border: 1px solid var(--terminal-green);
    padding: 8px;
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    background-color: var(--bg-color);
}

.app-container {
    display: flex;
    height: calc(100vh - 120px);
    gap: 20px;
}

.sidebar {
    width: 200px;
    border: 1px solid var(--terminal-green);
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background-color: var(--bg-color);
}
.sidebar hr { border: none; border-top: 1px dashed var(--terminal-dim); width: 100%; }

.content-window {
    flex-grow: 1;
    border: 1px solid var(--terminal-green);
    padding: 20px;
    background-color: var(--bg-color);
    overflow-y: auto;
}

.mail-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.mail-card {
    border: 1px solid var(--terminal-dim);
    padding: 12px;
    background-color: var(--bg-color);
}
.mail-card .meta {
    font-size: 0.85em;
    color: var(--terminal-dim);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.mail-card .body {
    white-space: pre-wrap;
    line-height: 1.4;
}

.form-group { margin-bottom: 15px; }

.category-sublist {
    display: flex;
    flex-direction: column;
    padding-left: 12px;
    gap: 4px;
    margin-bottom: 5px;
}

.cat-item {
    font-size: 11px;
    color: var(--terminal-dim);
    cursor: pointer;
    padding: 4px 6px;
    border-left: 1px dashed var(--terminal-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.cat-item:hover {
    color: var(--terminal-green);
    background-color: var(--terminal-dark);
}
.cat-item.active {
    color: var(--terminal-green);
    font-weight: bold;
    border-left: 2px solid var(--terminal-green);
}

.terminal-dropdown-select {
    background-color: black;
    border: 1px solid var(--terminal-dim);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
    margin-top: 5px;
    outline: none;
    cursor: pointer;
}
.terminal-dropdown-select:focus {
    border-color: var(--terminal-green);
    box-shadow: 0 0 5px var(--terminal-green);
}

.settings-box {
    border: 1px solid var(--terminal-dim);
    padding: 20px;
    background-color: var(--bg-color);
    margin-bottom: 20px;
}

.group-help-text,
.group-description {
    color: var(--terminal-dim);
    font-size: 12px;
    line-height: 1.5;
}

.group-card {
    margin-bottom: 0;
}

.group-card-header {
    align-items: flex-start;
    display: flex;
    gap: 15px;
    justify-content: space-between;
}

.group-card-header h4 {
    flex: 1;
}

.group-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
}

.group-membership {
    border: 1px dashed var(--terminal-dim);
    color: var(--terminal-dim);
    font-size: 10px;
    letter-spacing: 1px;
    padding: 5px 8px;
}

.group-membership.joined {
    border-style: solid;
    color: var(--terminal-green);
}

.group-membership.private {
    border-color: #ffaa00;
    color: #ffaa00;
}

.group-meta {
    border-bottom: 1px dashed var(--terminal-dark);
    color: var(--terminal-dim);
    font-size: 11px;
    margin: 12px 0;
    padding-bottom: 12px;
}

.group-member-controls {
    align-items: flex-end;
    display: grid;
    gap: 10px;
    grid-template-columns: minmax(160px, 1fr) auto;
    margin-bottom: 18px;
}

.group-owner-controls {
    align-items: end;
    border: 1px dashed var(--terminal-dim);
    display: grid;
    gap: 10px;
    grid-template-columns: minmax(180px, 1fr) auto;
    margin-bottom: 15px;
    padding: 12px;
}

.group-owner-controls label {
    font-size: 11px;
    grid-column: 1 / -1;
}

.group-owner-controls button {
    margin-top: 5px;
}

.group-owner-note {
    color: var(--terminal-dim);
    font-size: 11px;
    grid-column: 1 / -1;
    padding: 7px 0;
}

.group-member-directory {
    background: rgba(0, 0, 0, 0.35);
    border: 1px dashed var(--terminal-dim);
    margin-bottom: 15px;
    padding: 12px;
}

.group-member-directory-title {
    font-size: 11px;
    margin-bottom: 8px;
}

.group-member-directory ul {
    color: var(--terminal-dim);
    font-size: 12px;
    line-height: 1.6;
    list-style: none;
    margin: 0;
    padding: 0;
}

.group-member-directory li::before {
    content: "> ";
    color: var(--terminal-green);
}

.group-member-controls > button:only-child {
    grid-column: 2;
}

.group-member-controls button,
.group-send-button {
    margin-top: 5px;
}

.group-send-button {
    width: 100%;
}

.group-send-label {
    display: block;
    font-size: 12px;
    margin-bottom: 3px;
}

.group-card-status,
.group-success-msg {
    color: var(--terminal-green);
    font-size: 12px;
    margin-top: 12px;
}

.group-empty-state {
    border: 1px dashed var(--terminal-dim);
    color: var(--terminal-dim);
    padding: 20px;
    text-align: center;
}

@media (max-width: 700px) {
    .group-member-controls {
        grid-template-columns: 1fr;
    }

    .group-owner-controls {
        grid-template-columns: 1fr;
    }

    .group-member-controls > button:only-child {
        grid-column: 1;
    }
}
.history-wrapper { position: relative; margin-top: 5px; }
.history-toggle { background: transparent; color: var(--terminal-dim); border: 1px dashed var(--terminal-dim); padding: 4px 10px; cursor: pointer; font-family: var(--font-stack); font-size: 11px; text-transform: uppercase; }
.history-toggle:hover { color: var(--terminal-green); border-color: var(--terminal-green); }
.history-dropdown { position: absolute; top: 28px; left: 0; width: 100%; max-width: 400px; z-index: 100; max-height: 155px; overflow-y: auto; background-color: var(--bg-color); border: 1px solid var(--terminal-green); }
.history-item { padding: 6px 10px; cursor: pointer; font-size: 13px; border-bottom: 1px solid var(--terminal-dark); }
.history-item:hover { background: var(--terminal-dark); color: #fff; }
.history-item.empty { color: var(--terminal-dim); cursor: default; }

.file-upload-input { background: transparent; color: var(--terminal-green); border: 1px solid var(--terminal-dim); padding: 5px; width: 100%; margin-top: 5px; box-sizing: border-box; }
.custom-category-input { background: transparent; color: var(--terminal-green); border: 1px solid var(--terminal-dim); padding: 7px; width: 100%; margin-top: 7px; box-sizing: border-box; font-family: var(--font-stack); text-transform: uppercase; }
.custom-category-input:focus { border-color: var(--terminal-green); outline: none; box-shadow: 0 0 6px var(--terminal-dark); }
.attachment-payload-box { margin-top: 12px; padding: 8px; border: 1px dashed var(--terminal-green); background: rgba(0, 0, 0, 0.4); display: flex; flex-direction: column; align-items: flex-start; gap: 8px; max-width: min(100%, 760px); box-sizing: border-box; }
.attachment-embed { display: block; width: 100%; max-width: 720px; border: 1px solid var(--terminal-dim); background: #000; box-sizing: border-box; }
.attachment-image { width: auto; max-height: 520px; object-fit: contain; }
.attachment-audio { min-width: min(100%, 320px); border: 0; }
.attachment-video { max-height: 520px; }
.attachment-document { height: min(65vh, 640px); min-height: 320px; }
.download-link { text-decoration: none; font-weight: bold; color: var(--terminal-green); font-size: 12px; }
.download-link:hover { color: #fff; text-shadow: 0 0 5px var(--terminal-green); }

.color-picker-group { display: flex; align-items: center; gap: 15px; margin-top: 12px; }
.color-picker-group label { font-size: 12px; flex: 1; }
.matrix-color-wheel { background: transparent; border: 1px solid var(--terminal-green); cursor: pointer; width: 50px; height: 30px; padding: 0; }
.system-version-tag { position: fixed; bottom: 10px; left: 15px; font-size: 12px; color: var(--terminal-dim); pointer-events: none; letter-spacing: 1px; }

.verity-goodbye { position: fixed; z-index: 10000; right: 18px; bottom: 12px; display: flex; flex-direction: column; align-items: flex-end; pointer-events: none; text-shadow: none; }
.verity-goodbye-speech { position: relative; box-sizing: border-box; width: 300px; height: 200px; padding: 31px 28px 44px; }
.verity-goodbye-frame { position: absolute; z-index: 0; inset: 0; width: 300px; height: 200px; transform: scaleX(-1); image-rendering: pixelated; image-rendering: crisp-edges; }
.verity-goodbye-speech p { position: relative; z-index: 1; margin: 0; color: #000; font-family: Arial, Helvetica, sans-serif; font-size: 15px; font-weight: 600; line-height: 1.35; text-shadow: none; }
.verity-goodbye-character { width: 129px; height: 132px; object-fit: contain; object-position: right bottom; image-rendering: pixelated; image-rendering: crisp-edges; filter: drop-shadow(0 6px 9px rgba(0, 0, 0, .55)); }

@media (max-width: 700px) {
    .verity-goodbye { right: 8px; bottom: 8px; }
}

.mail-delete-button {
    width: auto;
    margin: 0 0 0 auto;
    padding: 3px 8px;
    border-color: #ff3333;
    color: #ff3333;
    font-size: 10px;
}

.mail-delete-button:hover {
    background: #ff3333;
    color: #000;
    box-shadow: none;
    text-shadow: none;
}

/* Responsive application shell */
@media (max-width: 820px) {
    body {
        box-sizing: border-box;
        height: 100dvh;
        min-height: 100dvh;
        overflow: hidden;
        padding: 0;
    }

    .panel {
        border-width: 1px;
        box-sizing: border-box;
        margin: 0;
        max-width: none;
        min-height: 100dvh;
        padding: max(30px, 7vh) 22px 40px;
        width: 100%;
    }

    .panel > div[style*="display: flex"] { flex-wrap: wrap; }
    .panel > div[style*="display: flex"] button { flex: 1 1 145px !important; }

    .status-bar {
        align-items: center;
        box-sizing: border-box;
        font-size: 11px;
        gap: 12px;
        height: 54px;
        margin: 0;
        padding: 9px 12px;
    }

    .status-bar span:first-child { flex: 0 0 auto; }
    #user-display {
        min-width: 0;
        overflow: hidden;
        text-align: right;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .app-container {
        display: grid;
        gap: 0;
        grid-template-rows: auto minmax(0, 1fr);
        height: calc(100dvh - 54px);
    }

    .sidebar {
        -webkit-overflow-scrolling: touch;
        border-width: 0 0 1px;
        box-sizing: border-box;
        display: flex;
        flex-direction: row;
        gap: 7px;
        overflow-x: auto;
        overscroll-behavior-inline: contain;
        padding: 8px;
        scrollbar-width: none;
        width: 100%;
    }

    .sidebar::-webkit-scrollbar { display: none; }
    .sidebar > button {
        flex: 0 0 auto !important;
        font-size: 11px;
        margin: 0;
        min-height: 42px;
        padding: 9px 12px;
        white-space: nowrap;
    }

    .sidebar > button:first-child { background: var(--terminal-green); color: #000; }
    .sidebar hr, .sidebar .category-sublist { display: none !important; }

    .content-window {
        border-width: 0;
        box-sizing: border-box;
        min-height: 0;
        overflow-x: hidden;
        overflow-y: auto;
        padding: 20px 14px 80px;
    }

    h2 { font-size: 20px; line-height: 1.25; }
    h3 { font-size: 17px; line-height: 1.3; }
    h4 { font-size: 14px; line-height: 1.35; }
    input, textarea, select { font-size: 16px !important; }

    .mail-card, .settings-box { box-sizing: border-box; max-width: 100%; padding: 14px; }
    .mail-card .meta { align-items: flex-start; display: grid; grid-template-columns: minmax(0, 1fr) auto; }
    .mail-card .meta > * { min-width: 0; overflow-wrap: anywhere; }
    .mail-card .body, .group-description, .group-meta { overflow-wrap: anywhere; }

    .group-card-header { align-items: stretch; flex-direction: column; gap: 8px; }
    .group-badges { justify-content: flex-start; }
    .group-member-controls, .group-owner-controls { grid-template-columns: minmax(0, 1fr); }
    .group-member-controls > button:only-child { grid-column: 1; }
    .group-member-controls button, .group-owner-controls button, .group-send-button { width: 100%; }

    .attachment-payload-box { width: 100%; }
    .attachment-embed, .attachment-image, .attachment-video { height: auto; max-width: 100%; width: 100%; }
    .attachment-audio { min-width: 0; width: 100%; }
    .attachment-document { height: 55dvh; min-height: 260px; }
    .color-picker-group { align-items: flex-start; flex-direction: column; }
    .system-version-tag { bottom: 4px; font-size: 9px; left: 6px; opacity: .65; }
    .verity-goodbye { display: none !important; }
}

@media (max-width: 420px) {
    .status-bar span:first-child { max-width: 38%; }
    .content-window { padding: 16px 10px 70px; }
    .settings-box, .mail-card { padding: 12px; }
    button { max-width: 100%; }
}