* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #08080c;
    color: #f3f3f3;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.app {
    display: grid;
    grid-template-columns: 320px 1fr;
    height: 100vh;
}

/* ---------------------------------------------------------
 * Sidebar
 * --------------------------------------------------------- */

.sidebar {
    display: flex;
    flex-direction: column;
    min-height: 0;
    background: #11111a;
    border-right: 1px solid #252535;
    padding: 22px;
}

.brand h1,
.sidebar h1 {
    margin: 0;
    font-size: 34px;
    letter-spacing: 1px;
}

.subtitle {
    color: #aaa;
    margin-top: 6px;
}

.status-box {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 22px;
    padding: 12px;
    background: #181824;
    border: 1px solid #2c2c3d;
    border-radius: 12px;
    font-size: 14px;
}

.dot {
    width: 12px;
    height: 12px;
    flex: 0 0 auto;
    border-radius: 999px;
    background: #777;
}

.dot.ok {
    background: #44d17a;
}

.dot.bad {
    background: #ff4d4d;
}

.new-chat-btn {
    width: 100%;
    margin-top: 16px;
    padding: 12px 14px;
    background: #27274a;
    color: #fff;
    border: 1px solid #3a3a66;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
    text-align: left;
}

.new-chat-btn:hover {
    background: #343466;
}

/* ---------------------------------------------------------
 * Chat history
 * --------------------------------------------------------- */

.history-panel {
    display: flex;
    flex-direction: column;
    min-height: 0;
    margin-top: 22px;
    flex: 1;
}

.history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.history-header h2 {
    margin: 0;
    font-size: 16px;
    color: #ddd;
}

.small-btn {
    width: 32px;
    height: 32px;
    background: #181824;
    color: #ddd;
    border: 1px solid #2c2c3d;
    border-radius: 10px;
    cursor: pointer;
}

.small-btn:hover {
    background: #242438;
}

.chat-history {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
}

.history-empty {
    color: #777;
    font-size: 14px;
    padding: 10px 2px;
}

.history-item {
    width: 100%;
    padding: 11px 12px;
    background: #181824;
    color: #ddd;
    border: 1px solid #2c2c3d;
    border-radius: 12px;
    cursor: pointer;
    text-align: left;
}

.history-item:hover {
    background: #202033;
}

.history-item.active {
    background: #27274a;
    border-color: #55558a;
}

.history-title {
    display: block;
    color: #f3f3f3;
    font-size: 14px;
    font-weight: 650;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-date {
    display: block;
    margin-top: 4px;
    color: #8f8fa3;
    font-size: 12px;
}

.commands {
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid #252535;
}

.commands h2 {
    font-size: 16px;
    color: #ddd;
}

.commands p {
    color: #bbb;
    margin: 8px 0;
}

code {
    background: #222233;
    padding: 4px 6px;
    border-radius: 6px;
}

/* ---------------------------------------------------------
 * Main chat area
 * --------------------------------------------------------- */

.chat {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    background: #11111a;
    border-bottom: 1px solid #252535;
}

.chat-label {
    color: #88889a;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.chat-header h2 {
    margin: 4px 0 0;
    font-size: 20px;
}

.save-status {
    color: #9999aa;
    font-size: 13px;
    white-space: nowrap;
}

.messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 28px;
}

.message {
    margin-bottom: 18px;
}

.name {
    font-size: 13px;
    color: #aaa;
    margin-bottom: 6px;
}

.bubble {
    max-width: 850px;
    white-space: pre-wrap;
    line-height: 1.55;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid #2c2c3d;
}

.user .bubble {
    margin-left: auto;
    background: #20203a;
}

.user .name {
    text-align: right;
}

.assistant .bubble {
    background: #141421;
}

.input-bar {
    display: flex;
    gap: 10px;
    padding: 18px;
    background: #11111a;
    border-top: 1px solid #252535;
}

.input-bar input {
    flex: 1;
    min-width: 0;
    padding: 14px;
    background: #08080c;
    color: #f3f3f3;
    border: 1px solid #333348;
    border-radius: 12px;
    outline: none;
    font-size: 16px;
}

.input-bar input:focus {
    border-color: #6666aa;
}

.input-bar button {
    padding: 0 18px;
    background: #27274a;
    color: #fff;
    border: 1px solid #3a3a66;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
}

.input-bar button:hover {
    background: #343466;
}

.input-bar button:disabled,
.input-bar input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ---------------------------------------------------------
 * Typing animation
 * --------------------------------------------------------- */

.typing-bubble {
    min-width: 72px;
}

.typing-dots {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 18px;
}

.typing-dots span {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: #aaa;
    display: inline-block;
    animation: jolliTypingDot 1.2s infinite ease-in-out;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.15s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes jolliTypingDot {
    0%, 80%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }

    40% {
        opacity: 1;
        transform: translateY(-5px);
    }
}

/* ---------------------------------------------------------
 * Scrollbars
 * --------------------------------------------------------- */

.messages::-webkit-scrollbar,
.chat-history::-webkit-scrollbar {
    width: 8px;
}

.messages::-webkit-scrollbar-track,
.chat-history::-webkit-scrollbar-track {
    background: transparent;
}

.messages::-webkit-scrollbar-thumb,
.chat-history::-webkit-scrollbar-thumb {
    background: #2d2d44;
    border-radius: 999px;
}

/* ---------------------------------------------------------
 * Mobile / PWA
 * --------------------------------------------------------- */

@media (max-width: 900px) {
    .app {
        grid-template-columns: 1fr;
        height: 100dvh;
    }

    .sidebar {
        display: none;
    }

    .chat {
        height: 100dvh;
    }

    .chat-header {
        padding: 14px 16px;
    }

    .chat-header h2 {
        font-size: 17px;
    }

    .save-status {
        display: none;
    }

    .messages {
        padding: 16px;
    }

    .bubble {
        max-width: 100%;
        font-size: 15px;
    }

    .input-bar {
        padding: 10px;
        gap: 8px;
    }

    .input-bar input {
        font-size: 16px;
        padding: 13px;
    }

    .input-bar button {
        padding: 0 12px;
    }
}