/* Tasklet Platform - Minimal UI Design */

/* Color Palette */
:root {
    --primary-green: var(--crimson);
    --dark-grey: #444745;
    --light-grey: #F5F5F5;
    --border-grey: #E0E0E0;
    --text-dark: #2C2C2C;
    --text-light: #666666;
    --white: #FFFFFF;
    --error: #DC3545;
    --success: #28A745;
    --info: #17A2B8;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--white);
    color: var(--text-dark);
}

body {
    overflow: hidden;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    background: var(--white);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--light-grey);
    border-right: 1px solid var(--border-grey);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-grey);
    background: var(--white);
}

.sidebar-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-green);
    letter-spacing: -0.5px;
}

/* Agent Selector */
.agent-selector {
    padding: 16px;
    border-bottom: 1px solid var(--border-grey);
    background: var(--white);
}

.agent-selector label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.agent-selector select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-grey);
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 12px;
    background: var(--white);
    color: var(--text-dark);
    cursor: pointer;
    transition: border-color 0.2s;
}

.agent-selector select:hover {
    border-color: var(--primary-green);
}

.agent-selector select:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(120, 190, 32, 0.1);
}

#new-thread-btn {
    width: 100%;
}

#new-thread-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Thread List */
.thread-list-container {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 16px;
}

.thread-list-container h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.thread-list {
    list-style: none;
    flex: 1;
    overflow-y: auto;
}

.thread-list li {
    padding: 12px;
    margin-bottom: 6px;
    background: var(--white);
    border: 1px solid var(--border-grey);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    color: var(--text-dark);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.thread-list li:hover {
    border-color: var(--primary-green);
    background: #FFFEF8;
}

.thread-list li.active {
    background: var(--primary-green);
    color: var(--white);
    border-color: var(--primary-green);
}

.thread-list li.empty-state {
    text-align: center;
    color: var(--text-light);
    cursor: default;
    font-size: 13px;
}

.thread-list li.empty-state:hover {
    background: var(--white);
    border-color: var(--border-grey);
}

/* Main Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--white);
    overflow: hidden;
}

.no-thread-state {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
}

.empty-message {
    text-align: center;
    max-width: 400px;
}

.empty-message h2 {
    color: var(--text-dark);
    margin-bottom: 12px;
    font-size: 18px;
}

.empty-message p {
    font-size: 14px;
    color: var(--text-light);
}

.thread-view {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Thread Header */
.thread-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-grey);
    background: var(--white);
}

.thread-header h2 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.thread-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 13px;
}

.agent-badge {
    background: var(--primary-green);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 600;
}

.thread-date {
    color: var(--text-light);
}

/* Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    display: flex;
    margin-bottom: 12px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    justify-content: flex-end;
}

.message.assistant {
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
    word-wrap: break-word;
}

.message.user .message-content {
    background: var(--primary-green);
    color: var(--white);
    border-bottom-right-radius: 4px;
}

.message.assistant .message-content {
    background: var(--light-grey);
    color: var(--text-dark);
    border-bottom-left-radius: 4px;
}

.message-timestamp {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
    text-align: right;
}

.message.assistant .message-timestamp {
    text-align: left;
}

/* Message Input Area */
.message-input-area {
    padding: 20px;
    border-top: 1px solid var(--border-grey);
    background: var(--white);
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 8px;
}

.message-input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-grey);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    color: var(--text-dark);
    transition: border-color 0.2s;
}

.message-input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(120, 190, 32, 0.1);
}

.message-input::placeholder {
    color: var(--text-light);
}

/* Buttons */
.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-green);
    color: var(--white);
}

.btn-primary:hover:not(:disabled) {
    background: #6BA61A;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(120, 190, 32, 0.3);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-send {
    background: var(--primary-green);
    color: var(--white);
    padding: 12px 24px;
    height: auto;
}

.btn-send:hover:not(:disabled) {
    background: #6BA61A;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(120, 190, 32, 0.3);
}

.btn-send:active:not(:disabled) {
    transform: translateY(0);
}

/* Status Message */
.status-message {
    font-size: 12px;
    min-height: 20px;
    color: var(--text-light);
}

.status-message.loading {
    color: var(--info);
    font-weight: 500;
}

.status-message.error {
    color: var(--error);
}

.status-message.success {
    color: var(--success);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-grey);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        max-height: 35vh;
        border-right: none;
        border-bottom: 1px solid var(--border-grey);
    }

    .chat-area {
        flex: 1;
    }

    .message-content {
        max-width: 90%;
    }

    .thread-list-container {
        max-height: 150px;
    }
}

/* Skill catalog: category chips + command buttons */
.skill-catalog { margin: 10px 0 4px; padding: 10px; border: 1px solid var(--border, #2a2a2a); border-radius: 12px; background: rgba(255,255,255,.02); }
.sc-cats { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.sc-cat { padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border, #333); background: transparent; color: var(--text, #ddd); font-size: 13px; cursor: pointer; }
.sc-cat:hover { border-color: var(--crimson); }
.sc-cat.active { background: var(--crimson); color: #0a0a0a; border-color: var(--crimson); font-weight: 600; }
.sc-cat .sc-n { opacity: .6; font-size: 11px; }
.sc-cmds { display: flex; flex-wrap: wrap; gap: 6px; }
.sc-cmd { padding: 5px 11px; border-radius: 8px; border: 1px solid var(--border, #333); background: rgba(255,255,255,.04); color: var(--text, #eee); font-size: 13px; font-family: ui-monospace, monospace; cursor: pointer; }
.sc-cmd:hover { border-color: var(--crimson); background: var(--color-sky-50); }
.sc-empty { opacity: .6; font-size: 13px; }

/* Learning routes approve-queue */
.rp-head { display:flex; flex-direction:column; gap:2px; margin-bottom:8px; }
.rp-item { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:8px 10px; border:1px solid var(--border,#333); border-radius:10px; margin-bottom:6px; background:rgba(255,255,255,.02); }
.rp-main { min-width:0; }
.rp-dest { font-weight:600; font-size:13px; }
.rp-cat { opacity:.55; font-weight:400; font-size:11px; margin-left:6px; }
.rp-goal { opacity:.7; font-size:12px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:420px; }
.rp-actions { display:flex; gap:6px; flex:0 0 auto; }
.rp-actions .btn { padding:5px 12px; font-size:12px; }
.rp-rules-head { margin:10px 0 6px; font-size:12px; opacity:.6; text-transform:uppercase; letter-spacing:.04em; }
.rp-auto { color:#0a0a0a; background:var(--crimson); border-radius:5px; padding:0 6px; font-weight:700; font-size:11px; }

/* Skills panel: contained, searchable (taste: dense, calm, no walls) */
.sc-search { width: 100%; margin-bottom: 8px; padding: 7px 11px; border-radius: 8px; border: 1px solid var(--border, #E7E6E2); background: var(--bg-2, #fff); color: var(--text-0, #1A1C20); font-size: 13px; outline: none; }
.sc-search:focus { border-color: var(--crimson); }
.sc-cmds { max-height: 200px; overflow-y: auto; }
.sc-cats { max-height: 90px; overflow-y: auto; }
.chip-select { white-space: nowrap; }