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

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

* {
    scrollbar-width: thin;
    scrollbar-color: #333 transparent;
}

body {
    font-family: -apple-system, 'Segoe UI', system-ui, sans-serif;
    background: #0f0f0f;
    color: #e0e0e0;
    height: 100dvh;
    overflow: hidden;
}

#app { height: 100dvh; display: flex; flex-direction: column; }

/* ===== Setup Screen ===== */
.setup {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 14px;
    padding: 20px;
}

.setup h1 { color: #7c4dff; font-size: 1.6em; }
.setup .subtitle { color: #888; font-size: 0.85em; text-align: center; }
.setup .version-link { color: #555; font-size: 0.75em; margin-top: 4px; text-align: center; }
.setup .version-link a { color: #888; text-decoration: none; }
.setup .version-link a:hover { text-decoration: underline; }

.setup input, .setup button {
    width: 100%;
    max-width: 400px;
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px solid #333;
    background: #1a1a1a;
    color: #e0e0e0;
    font-size: 1em;
    -webkit-appearance: none;
}

.setup button {
    background: #7c4dff;
    border: none;
    cursor: pointer;
    font-weight: 600;
    touch-action: manipulation;
}

.setup button:active { background: #651fff; }
.setup button:disabled { background: #444; cursor: not-allowed; }

.setup .info {
    font-size: 0.8em;
    color: #888;
    max-width: 400px;
    word-break: break-all;
    text-align: center;
    padding: 10px;
    background: #1a1a1a;
    border-radius: 8px;
    position: relative;
}

.setup .info.copyable { cursor: pointer; }
.setup .info.copyable:active { background: #252525; }

.key-text { user-select: all; -webkit-user-select: all; font-size: 0.85em; }

.copy-hint { color: #666; font-size: 0.85em; font-weight: 400; }

.copied-toast {
    position: absolute;
    top: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: #4caf50;
    color: white;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.8em;
    font-weight: 600;
    animation: fadeOut 1.5s forwards;
}

@keyframes fadeOut {
    0%, 60% { opacity: 1; }
    100% { opacity: 0; }
}

.restore-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
    max-width: 400px;
    padding: 16px;
    background: #1a1a1a;
    border-radius: 10px;
    border: 1px solid #333;
}

.restore-label { font-size: 0.9em; color: #aaa; text-align: center; }

.restore-box input, .restore-box button {
    width: 100%;
}

.save-keys {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 400px;
}

.save-keys input, .save-keys button {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid #333;
    background: #1a1a1a;
    color: #e0e0e0;
    font-size: 0.95em;
    -webkit-appearance: none;
}

.save-keys button {
    background: #444;
    border: none;
    cursor: pointer;
    font-weight: 600;
    touch-action: manipulation;
}

.save-keys button:active { background: #555; }
.save-keys button:disabled { background: #333; cursor: not-allowed; }

.setup button.secondary {
    background: #333;
    font-size: 0.9em;
}

.setup button.secondary:active { background: #444; }

.setup .status { font-size: 0.9em; color: #4caf50; }

/* ===== Chat Screen ===== */
.chat {
    display: flex;
    flex-direction: column;
    height: 100dvh;
}

/* -- Top bar (mobile) -- */
.topbar {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    background: #1a1a1a;
    border-bottom: 1px solid #333;
    gap: 10px;
    flex-shrink: 0;
}

.topbar h2 { font-size: 1em; color: #7c4dff; flex: 1; }

.topbar .nick {
    font-size: 0.8em;
    color: #888;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar button {
    background: none;
    border: 1px solid #444;
    color: #ccc;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.85em;
    cursor: pointer;
    touch-action: manipulation;
}

.topbar button:active { background: #333; }

.topbar .logout-btn {
    color: #f44336;
    border-color: #f4433644;
}

.topbar .logout-btn:active { background: #f4433622; }

/* -- Responsive visibility -- */
.desktop-only { display: none; }
.mobile-only { display: inline-block; }

/* -- Desktop sidebar (not used on mobile) -- */
.desktop-sidebar { display: contents; }

/* -- Panels -- */
.panel-contacts, .panel-chat {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.panel-contacts.hidden, .panel-chat.hidden { display: none; }

/* -- Add toggle button -- */
.add-contact-toggle {
    padding: 10px 14px;
    border-bottom: 1px solid #333;
    color: #7c4dff;
    font-size: 0.9em;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    flex-shrink: 0;
    user-select: none;
}

.add-contact-toggle:active { background: #1a1a1a; }

/* -- Add Contact -- */
.add-contact {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px 14px;
    border-bottom: 1px solid #333;
    flex-shrink: 0;
}

.add-contact input {
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #333;
    background: #1e1e1e;
    color: #e0e0e0;
    font-size: 0.9em;
    -webkit-appearance: none;
}

.add-contact button {
    padding: 10px;
    border-radius: 8px;
    border: none;
    background: #7c4dff;
    color: white;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    touch-action: manipulation;
}

.my-key {
    padding: 8px 14px;
    border-bottom: 1px solid #333;
    flex-shrink: 0;
    cursor: pointer;
    position: relative;
}

.my-key:active { background: #222; }

.my-key-label { font-size: 0.75em; color: #666; margin-bottom: 4px; }

.my-key-value {
    font-size: 0.65em;
    color: #888;
    word-break: break-all;
    user-select: all;
    -webkit-user-select: all;
    line-height: 1.4;
}

/* -- Contact list -- */
.contacts-list {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.contact-item {
    padding: 14px;
    cursor: pointer;
    border-bottom: 1px solid #1e1e1e;
    display: flex;
    align-items: center;
    gap: 10px;
    touch-action: manipulation;
}

.contact-item:active { background: #252525; }

.contact-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #444;
    flex-shrink: 0;
}

.contact-status.online { background: #4caf50; }

.contact-name {
    flex: 1;
    font-size: 0.95em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.contact-badge {
    background: #7c4dff;
    color: white;
    font-size: 0.75em;
    font-weight: 700;
    min-width: 22px;
    height: 22px;
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
}

.contact-edit-input {
    flex: 1;
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid #7c4dff;
    background: #1e1e1e;
    color: #e0e0e0;
    font-size: 0.95em;
    outline: none;
    min-width: 0;
}

.contact-edit-btn {
    background: none;
    border: none;
    color: #555;
    cursor: pointer;
    font-size: 1em;
    padding: 4px 6px;
    touch-action: manipulation;
}

.contact-edit-btn:active { color: #7c4dff; }

.contact-delete {
    background: none;
    border: none;
    color: #555;
    cursor: pointer;
    font-size: 1.2em;
    padding: 4px 8px;
    touch-action: manipulation;
}

.contact-delete:active { color: #f44336; }

/* -- Chat area -- */
.chat-header {
    padding: 12px 14px;
    border-bottom: 1px solid #333;
    background: #1a1a1a;
    font-weight: 600;
    font-size: 0.95em;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.chat-header .back-btn {
    background: none;
    border: none;
    color: #7c4dff;
    font-size: 1.3em;
    cursor: pointer;
    padding: 0 4px;
    touch-action: manipulation;
}

.chat-header .online-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4caf50;
    display: inline-block;
}

.messages {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 0;
}

.message {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 0.95em;
    line-height: 1.4;
    word-break: break-word;
}

.message.sent {
    align-self: flex-end;
    background: #7c4dff;
    color: white;
    border-bottom-right-radius: 4px;
}

.message.received {
    align-self: flex-start;
    background: #252525;
    border-bottom-left-radius: 4px;
}

.message .time {
    font-size: 0.7em;
    opacity: 0.5;
    margin-top: 3px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
}

.msg-status .status-icon { font-size: 1.1em; letter-spacing: -2px; }
.msg-status.sending .status-icon { opacity: 0.5; }
.msg-status.sent .status-icon { opacity: 0.8; }
.msg-status.delivered .status-icon { opacity: 1; color: #a5d6a7; }
.msg-status.queued .status-icon { opacity: 0.7; }

.no-chat {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #444;
    font-size: 1em;
    padding: 20px;
    text-align: center;
}

.input-area {
    padding: 10px 12px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
    border-top: 1px solid #333;
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    background: #0f0f0f;
}

.input-area input {
    flex: 1;
    padding: 12px 14px;
    border-radius: 20px;
    border: 1px solid #333;
    background: #1a1a1a;
    color: #e0e0e0;
    font-size: 1em;
    -webkit-appearance: none;
}

.input-area button {
    padding: 12px 18px;
    border-radius: 20px;
    border: none;
    background: #7c4dff;
    color: white;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95em;
    touch-action: manipulation;
}

.input-area button:disabled { background: #333; }

/* ===== Resizable Log Panel ===== */
.log-wrapper {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: relative;
}

.log-drag-handle {
    height: 14px;
    background: #1a1a1a;
    border-top: 1px solid #333;
    cursor: ns-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: none;
    flex-shrink: 0;
}

.log-drag-handle .grip {
    width: 36px;
    height: 3px;
    border-radius: 2px;
    background: #444;
}

.log-area {
    background: #111;
    font-size: 0.75em;
    color: #666;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 6px 12px;
    font-family: 'SF Mono', 'Menlo', monospace;
    line-height: 1.5;
}

/* ===== Servers Panel ===== */
.panel-servers {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

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

.section-header {
    padding: 12px 14px;
    font-weight: 600;
    color: #7c4dff;
    border-bottom: 1px solid #333;
    font-size: 0.95em;
    flex-shrink: 0;
}

.add-server {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px 14px;
    border-bottom: 1px solid #333;
    flex-shrink: 0;
}

.add-server input {
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #333;
    background: #1e1e1e;
    color: #e0e0e0;
    font-size: 0.9em;
    -webkit-appearance: none;
}

.add-server button {
    padding: 10px;
    border-radius: 8px;
    border: none;
    background: #7c4dff;
    color: white;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    touch-action: manipulation;
}

.server-list {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.server-item {
    padding: 12px 14px;
    border-bottom: 1px solid #1e1e1e;
    display: flex;
    align-items: center;
    gap: 10px;
}

.server-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #444;
    flex-shrink: 0;
}

.server-status-dot.connected { background: #4caf50; }
.server-status-dot.connecting { background: #ff9800; }
.server-status-dot.disconnected { background: #555; }

.server-info {
    flex: 1;
    min-width: 0;
}

.server-name {
    font-size: 0.95em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.server-url {
    font-size: 0.7em;
    color: #666;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.server-btn {
    padding: 5px 10px;
    border-radius: 6px;
    border: none;
    font-size: 0.8em;
    cursor: pointer;
    touch-action: manipulation;
    font-weight: 600;
}

.server-btn.connect { background: #4caf50; color: white; }
.server-btn.disconnect { background: #f4433688; color: white; }
.server-btn:disabled { background: #444; color: #888; }

.empty-hint {
    padding: 30px 14px;
    color: #555;
    text-align: center;
    font-size: 0.9em;
}

/* ===== Desktop (side-by-side) ===== */
@media (min-width: 700px) {
    .desktop-only { display: inline-block; }
    .mobile-only { display: none; }

    .chat {
        display: grid;
        grid-template-columns: 300px 1fr;
        grid-template-rows: auto 1fr auto;
        height: 100dvh;
        overflow: hidden;
    }

    /* Topbar spans full width */
    .topbar {
        grid-column: 1 / -1;
        grid-row: 1;
    }

    /* Desktop sidebar: servers + contacts stacked in left column */
    .desktop-sidebar {
        display: flex;
        flex-direction: column;
        grid-column: 1;
        grid-row: 2;
        border-right: 1px solid #333;
        min-height: 0;
        overflow: hidden;
    }

    .panel-servers {
        flex: 0 0 auto;
        max-height: 45%;
        overflow-y: auto;
        border-bottom: 1px solid #333;
    }

    .panel-servers.hidden { display: flex; }
    .panel-servers.desktop-hidden { display: none; }

    .panel-contacts {
        flex: 1;
        min-height: 0;
        overflow: hidden;
    }

    .panel-contacts.hidden { display: flex; }

    /* Chat fills right column */
    .panel-chat {
        grid-column: 2;
        grid-row: 2;
        min-height: 0;
        overflow: hidden;
    }

    .panel-chat.hidden { display: flex; }

    .chat-header .back-btn { display: none; }

    /* Log spans full width at bottom */
    .log-wrapper {
        grid-column: 1 / -1;
        grid-row: 3;
    }
}