:root {
    --bg: #121212;
    --panel: #161616;
    --panel-2: #1d1d1d;
    --line: #2d2d2d;
    --text: #ececec;
    --muted: #a5a5a5;
    --accent: #ff8d3a;
    --ok: #58d2a3;
    --font: "JetBrains Mono", monospace;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
}

button,
input {
    font: inherit;
}

.transfer-shell {
    width: min(1080px, calc(100% - 28px));
    margin: 0 auto;
    padding: 18px 0 32px;
}

.transfer-header,
.workspace,
.panel {
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--panel);
}

.transfer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
}

.brand {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--accent);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.79rem;
}

.status-badge.connected {
    border-color: rgba(88, 210, 163, 0.42);
    color: var(--ok);
    background: rgba(88, 210, 163, 0.09);
}

.mode-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(110px, 1fr));
    gap: 6px;
    align-content: start;
    padding: 6px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    border-radius: 999px;
}

.mode-tabs.floating {
    position: fixed;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    z-index: 100;
    width: min(380px, calc(100vw - 24px));
}

.mode-tab,
.primary-btn,
.ghost-btn,
.icon-btn,
.code-value {
    min-height: 40px;
    border: 1px solid var(--line);
    border-radius: 4px;
    cursor: pointer;
    background: var(--panel-2);
    color: var(--text);
}

.mode-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.mode-tabs .mode-tab:first-child {
    border-top-left-radius: 999px;
    border-bottom-left-radius: 999px;
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
}

.mode-tabs .mode-tab:last-child {
    border-top-right-radius: 999px;
    border-bottom-right-radius: 999px;
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}

.mode-tab.active {
    border-color: rgba(255, 141, 58, 0.48);
    color: var(--accent);
}

.workspace {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 12px;
    padding: 12px;
    margin-bottom: 80px;
}

.panel {
    display: none;
    min-height: 430px;
    padding: 12px;
}

.panel.active {
    display: block;
}

.ui-message {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 4px;
    font-size: 0.84rem;
    color: var(--muted);
    background: #141414;
}

.ui-message.error {
    border-color: rgba(255, 107, 107, 0.45);
    color: #ff9e9e;
}

.ui-message.ok {
    border-color: rgba(88, 210, 163, 0.45);
    color: #9de6c8;
}

.drop-zone {
    display: grid;
    place-items: center;
    gap: 8px;
    min-height: 190px;
    padding: 18px;
    border: 1px dashed #3c3c3c;
    border-radius: 4px;
    background: #141414;
    text-align: center;
    cursor: pointer;
}

.drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(255, 141, 58, 0.08);
}

.drop-zone input {
    display: none;
}

.drop-zone i {
    color: var(--accent);
    font-size: 2rem;
}

.drop-zone strong {
    font-size: 0.95rem;
}

.drop-zone span,
.code-card small {
    color: var(--muted);
    font-size: 0.84rem;
}

.file-list,
.incoming-list {
    display: grid;
    gap: 8px;
    margin: 12px 0;
}

.file-list.empty,
.incoming-list.empty {
    color: var(--muted);
    font-size: 0.86rem;
}

.file-item,
.incoming-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: #141414;
}

.file-item strong,
.incoming-item strong {
    display: block;
    overflow-wrap: anywhere;
    font-size: 0.9rem;
}

.file-item span,
.incoming-item span {
    color: var(--muted);
    font-size: 0.8rem;
}

.transfer-meta {
    display: block;
    margin-top: 4px;
    color: var(--accent);
    font-size: 0.76rem;
}

.progress {
    grid-column: 1 / -1;
    height: 5px;
    overflow: hidden;
    border-radius: 999px;
    background: #252525;
}

.progress span {
    display: block;
    width: 0%;
    height: 100%;
    background: var(--accent);
    transition: width 0.15s linear;
}

.action-row,
.join-row {
    display: flex;
    gap: 8px;
}

.primary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 14px;
    border-color: rgba(255, 141, 58, 0.52);
    color: var(--accent);
}

.ghost-btn,
.icon-btn {
    width: 40px;
}

.code-card {
    display: grid;
    gap: 8px;
    margin-top: 12px;
    padding: 12px;
    border: 1px solid rgba(255, 141, 58, 0.4);
    border-radius: 4px;
    background: rgba(255, 141, 58, 0.06);
}

.hidden {
    display: none;
}

.code-value {
    width: fit-content;
    padding: 0 12px;
    font-size: 1.4rem;
    letter-spacing: 0.12em;
    color: var(--text);
    background: #141414;
}

.code-input-label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 0.86rem;
}

#join-code {
    width: min(280px, 100%);
    min-height: 42px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 4px;
    color: var(--text);
    background: #141414;
    font-size: 1rem;
    text-transform: uppercase;
    outline: none;
}

#join-code:focus {
    border-color: rgba(255, 141, 58, 0.55);
}

.download-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 10px;
    border-radius: 4px;
    border: 1px solid rgba(88, 210, 163, 0.42);
    color: var(--ok);
    text-decoration: none;
}

@media (max-width: 860px) {
    .workspace {
        padding: 10px;
    }

    .join-row,
    .action-row {
        flex-wrap: wrap;
    }

    #join-code,
    .primary-btn {
        width: 100%;
    }
}