/* ==================== CHAT APP (chat.html) ==================== */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700;800&display=swap');

:root {
    --bg: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #141414;
    --border: #1e1e1e;
    --border-light: #2a2a2a;
    --green: #00ffff;
    --green-dim: #00ccdd;
    --green-dark: #0099aa;
    --green-glow: rgba(0, 255, 255, 0.15);
    --green-glow-strong: rgba(0, 255, 255, 0.3);
    --text: #b0b0b0;
    --text-bright: #e0e0e0;
    --text-dim: #666;
    --white: #fff;
    --red: #ff4444;
    --yellow: #ffcc00;
    --cyan: #00ccff;
    --font: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 14px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--green) !important;
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none !important;
    margin-bottom: 12px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--green-glow);
    border-radius: 2px;
    color: var(--green);
}

.new-chat-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.78rem;
    cursor: pointer;
    border-radius: 2px;
    transition: all 0.2s;
}

.new-chat-btn:hover {
    border-color: var(--green);
    color: var(--green);
    background: var(--green-glow);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.history-label {
    font-size: 0.65rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    padding: 4px 8px;
    margin-bottom: 4px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    font-size: 0.78rem;
    color: var(--text);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s;
}

.history-item:hover {
    background: var(--bg-card);
}

.history-item.active {
    background: var(--green-glow);
    color: var(--green);
}

.sidebar-footer {
    padding: 14px;
    border-top: 1px solid var(--border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.user-avatar {
    width: 28px;
    height: 28px;
    background: var(--border-light);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--text);
    font-weight: 600;
}

.user-info span {
    font-size: 0.78rem;
    color: var(--text);
}

.sidebar-links {
    display: flex;
    gap: 14px;
}

.sidebar-links a {
    font-size: 0.7rem;
    color: var(--text-dim);
}

.sidebar-links a:hover {
    color: var(--green);
}

/* ==================== SIDEBAR MOBILE ==================== */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 2px;
    color: var(--green);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.sidebar-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* ==================== MAIN CHAT ==================== */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* ==================== EMPTY STATE ==================== */
.chat-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
}

.empty-logo {
    margin-bottom: 20px;
    color: var(--green);
}

.chat-empty h1 {
    font-size: 1.6rem;
    color: var(--text-bright);
    margin-bottom: 12px;
    text-align: center;
}

.dev-notice {
    text-align: center;
    margin-bottom: 30px;
}

.notice-badge {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(255, 204, 0, 0.1);
    border: 1px solid rgba(255, 204, 0, 0.3);
    color: var(--yellow);
    font-size: 0.65rem;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.dev-notice > :last-child {
    display: block;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 4px;
}

.suggestion-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    width: 100%;
    max-width: 520px;
}

.suggestion-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s;
}

.suggestion-card:hover {
    border-color: var(--green-dark);
    background: var(--green-glow);
}

.card-icon {
    color: var(--green);
    flex-shrink: 0;
    opacity: 0.7;
}

.card-text strong {
    display: block;
    font-size: 0.78rem;
    color: var(--text-bright);
    margin-bottom: 2px;
}

.card-text span {
    font-size: 0.72rem;
    color: var(--text-dim);
}

/* ==================== MESSAGES ==================== */
.messages-container {
    display: none;
    flex-direction: column;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
    padding: 20px 24px;
}

.messages-container.active {
    display: flex;
}

.message-row {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.message-row.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 30px;
    height: 30px;
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
}

.message-row.user .message-avatar {
    background: var(--green-glow);
    border-color: var(--green-dark);
    color: var(--green);
}

.message-content {
    max-width: 80%;
}

.message-sender {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 4px;
}

.message-row.user .message-sender {
    text-align: right;
}

.message-text {
    font-size: 0.82rem;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: 2px;
    word-wrap: break-word;
}

.message-row.user .message-text {
    background: var(--green-glow);
    border-color: var(--green-dark);
    color: var(--text-bright);
}

.message-text pre {
    background: var(--bg-card);
    padding: 10px;
    border-radius: 2px;
    margin: 8px 0;
    overflow-x: auto;
    font-size: 0.78rem;
    border: 1px solid var(--border);
}

.message-text code {
    font-family: var(--font);
    font-size: 0.78rem;
    color: var(--green);
    background: var(--bg-card);
    padding: 1px 4px;
    border-radius: 2px;
}

/* Typing */
.typing-row {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.typing-dots {
    display: flex;
    gap: 4px;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 2px;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    animation: dotBounce 1.4s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBounce {
    0%, 60%, 100% { opacity: 0.3; transform: scale(0.8); }
    30% { opacity: 1; transform: scale(1); }
}

/* ==================== INPUT AREA ==================== */
.input-area {
    padding: 16px 24px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.input-wrapper {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    gap: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 8px 10px;
    align-items: flex-end;
}

.input-wrapper:focus-within {
    border-color: var(--green);
}

.input-wrapper textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-bright);
    font-family: var(--font);
    font-size: 0.82rem;
    resize: none;
    outline: none;
    min-height: 24px;
    max-height: 200px;
    line-height: 1.5;
}

.input-wrapper textarea::placeholder {
    color: var(--text-dim);
}

.send-btn {
    width: 32px;
    height: 32px;
    background: var(--border-light);
    border: none;
    border-radius: 2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    transition: all 0.2s;
    flex-shrink: 0;
}

.send-btn.active {
    background: var(--green);
    color: var(--bg);
}

.send-btn svg {
    width: 16px;
    height: 16px;
}

.input-disclaimer {
    text-align: center;
    font-size: 0.65rem;
    color: var(--text-dim);
    margin-top: 8px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        bottom: 0;
        z-index: 1000;
        transition: left 0.3s;
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-toggle {
        display: flex;
    }

    .suggestion-cards {
        grid-template-columns: 1fr;
    }

    .chat-empty h1 {
        font-size: 1.2rem;
    }
}