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

:root {
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --border: #e5e7eb;
    --border-dark: #d1d5db;
    --text: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #eff6ff;
    --success: #16a34a;
    --success-soft: #f0fdf4;
    --warning: #d97706;
    --warning-soft: #fffbeb;
    --danger: #dc2626;
    --danger-soft: #fef2f2;
    --sidebar: #111827;
    --sidebar-hover: #1f2937;
    --sidebar-text: #d1d5db;
    --sidebar-muted: #6b7280;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
    --radius: 14px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

button,
input,
textarea {
    font: inherit;
}

button {
    border: none;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.hidden {
    display: none !important;
}

.app-shell {
    min-height: 100vh;
}

/* Sidebar */

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 250px;
    background: var(--sidebar);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.brand {
    height: 82px;
    padding: 0 22px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
}

.brand h1 {
    color: #ffffff;
    font-size: 17px;
    line-height: 1.2;
    font-weight: 700;
}

.brand span {
    display: block;
    color: var(--sidebar-muted);
    font-size: 11px;
    margin-top: 3px;
}

.sidebar-label {
    padding: 24px 20px 9px;
    color: var(--sidebar-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 10px;
    font-weight: 700;
}

.management-label {
    margin-top: 12px;
}

.sidebar-nav {
    padding: 0 10px;
}

.nav-item {
    width: 100%;
    height: 44px;
    padding: 0 12px;
    margin-bottom: 3px;
    border-radius: 8px;
    background: transparent;
    color: var(--sidebar-text);
    display: flex;
    align-items: center;
    gap: 11px;
    text-align: left;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: #ffffff;
}

.nav-item.active {
    background: #1e293b;
    color: #ffffff;
}

.nav-icon {
    width: 20px;
    text-align: center;
    color: #9ca3af;
    font-size: 15px;
}

.nav-item.active .nav-icon {
    color: #60a5fa;
}

.sidebar-footer {
    margin-top: auto;
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.system-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.system-status strong {
    display: block;
    color: #e5e7eb;
    font-size: 12px;
}

.system-status span:not(.status-dot) {
    display: block;
    color: var(--sidebar-muted);
    font-size: 10px;
    margin-top: 3px;
}

.status-dot {
    width: 8px;
    height: 8px;
    flex: 0 0 auto;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.12);
}

/* Main */

.main-content {
    margin-left: 250px;
    min-height: 100vh;
}

.topbar {
    height: 64px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
}

.topbar-left,
.topbar-right {
    display: flex;
    align-items: center;
}

.topbar-left {
    gap: 9px;
    color: var(--text-secondary);
    font-size: 13px;
}

.topbar-product {
    color: var(--text);
    font-weight: 650;
}

.topbar-divider {
    color: var(--text-muted);
}

.topbar-right {
    gap: 16px;
}

.environment-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 10px;
    border: 1px solid #bbf7d0;
    border-radius: 999px;
    color: #15803d;
    background: var(--success-soft);
    font-size: 11px;
    font-weight: 600;
}

.environment-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #22c55e;
}

.current-date {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
}

.page-content {
    padding: 34px 38px 60px;
    max-width: 1500px;
    margin: 0 auto;
}

.page-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 24px;
}

.eyebrow,
.section-eyebrow {
    display: block;
    color: var(--primary);
    font-size: 10px;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    margin-bottom: 7px;
}

.page-heading h2 {
    font-size: 28px;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.page-heading p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
}

/* Chat */

.chat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.chat-card-header {
    min-height: 72px;
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}

.chat-card-header h3 {
    font-size: 17px;
}

.assistant-status {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--success);
    font-size: 11px;
    font-weight: 650;
}

.chat-container {
    height: 500px;
    overflow-y: auto;
    padding: 24px;
    background: #fafbfc;
}

.chat-message {
    display: flex;
    align-items: flex-start;
    gap: 11px;
    margin-bottom: 20px;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    font-size: 12px;
    font-weight: 750;
}

.assistant-message .message-avatar {
    background: var(--primary-soft);
    color: var(--primary);
}

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

.user-message .message-avatar {
    background: #e5e7eb;
    color: #374151;
}

.message-content {
    max-width: min(78%, 780px);
    min-width: 0;
    overflow-wrap: anywhere;
}

.user-message .message-content {
    text-align: right;
}

.message-author {
    color: var(--text-secondary);
    font-size: 10px;
    font-weight: 700;
    margin-bottom: 5px;
}

.message-bubble {
    display: inline-block;
    padding: 12px 15px;
    border-radius: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 13px;
    line-height: 1.65;
    text-align: left;
    box-shadow: var(--shadow-sm);

    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.user-message .message-bubble {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    border-bottom-right-radius: 4px;
}

.assistant-message .message-bubble {
    border-bottom-left-radius: 4px;
}

.message-source {
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 9px;
    text-align: left;
}

.user-message .message-source {
    text-align: right;
}

.loading-bubble {
    min-width: 58px;
    display: flex;
    gap: 4px;
    align-items: center;
}

.loading-bubble span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: typing 1.2s infinite ease-in-out;
}

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

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

@keyframes typing {
    0%,
    60%,
    100% {
        opacity: 0.3;
        transform: translateY(0);
    }

    30% {
        opacity: 1;
        transform: translateY(-3px);
    }
}

.chat-input-area {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    padding: 16px;
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.chat-input-area textarea {
    flex: 1;
    min-height: 44px;
    max-height: 180px;
    resize: none;
    padding: 12px 14px;
    border: 1px solid var(--border-dark);
    border-radius: 10px;
    background: var(--surface-soft);
    color: var(--text);
    outline: none;
    line-height: 1.45;
}

.chat-input-area textarea:focus {
    border-color: #93c5fd;
    background: #ffffff;
}

#sendButton {
    min-height: 44px;
    padding: 0 17px;
    border-radius: 10px;
    background: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 9px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 650;
}

#sendButton:hover {
    background: var(--primary-dark);
}

#sendButton:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.send-icon {
    font-size: 16px;
}

/* Quick actions */

.quick-actions-section {
    margin-top: 28px;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 13px;
}

.section-heading h3 {
    font-size: 17px;
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 13px;
}

.action-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.action-card:hover {
    border-color: #bfdbfe;
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.action-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex: 0 0 auto;
}

.action-card strong {
    display: block;
    color: var(--text);
    font-size: 12px;
    margin-bottom: 4px;
}

.action-card span:not(.action-icon) {
    display: block;
    color: var(--text-secondary);
    font-size: 10px;
    line-height: 1.5;
}

/* Operations */

.operations-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
}

.activity-card,
.agent-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 21px;
}

.card-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.card-heading h3 {
    font-size: 16px;
}

.text-button {
    background: transparent;
    color: var(--primary);
    cursor: pointer;
    font-size: 11px;
    font-weight: 650;
}

.activity-list {
    border-top: 1px solid var(--border);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-indicator {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    flex: 0 0 auto;
}

.activity-content {
    flex: 1;
}

.activity-content strong {
    display: block;
    font-size: 11px;
    margin-bottom: 3px;
}

.activity-content span {
    display: block;
    color: var(--text-secondary);
    font-size: 10px;
}

.activity-time {
    color: var(--text-muted);
    font-size: 9px;
}

.live-badge {
    padding: 4px 7px;
    border-radius: 5px;
    background: var(--success-soft);
    color: var(--success);
    font-size: 8px;
    font-weight: 800;
    letter-spacing: 0.07em;
}

.agent-pipeline {
    border-top: 1px solid var(--border);
    padding-top: 4px;
}

.pipeline-step {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 0;
}

.pipeline-number {
    width: 27px;
    height: 27px;
    border-radius: 7px;
    background: var(--surface-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 750;
    flex: 0 0 auto;
}

.pipeline-step div {
    flex: 1;
}

.pipeline-step strong {
    display: block;
    font-size: 10px;
    margin-bottom: 2px;
}

.pipeline-step span:not(.pipeline-number):not(.pipeline-status) {
    display: block;
    color: var(--text-muted);
    font-size: 9px;
}

.pipeline-status {
    color: var(--success);
    font-size: 9px;
    font-weight: 650;
}

.pipeline-line {
    width: 1px;
    height: 9px;
    background: var(--border-dark);
    margin-left: 13px;
}

/* Tickets */

.tickets-view {
    width: 100%;
}

.ticket-summary-card {
    display: inline-flex;
    min-width: 180px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 22px;
    margin-bottom: 18px;
}

.ticket-summary-card strong {
    display: block;
    font-size: 27px;
    margin-top: 5px;
}

.secondary-button {
    padding: 9px 14px;
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font-size: 11px;
    font-weight: 650;
}

.secondary-button:hover {
    background: var(--surface-soft);
}

.tickets-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.tickets-header,
.tickets-row {
    display: grid;
    grid-template-columns: 110px minmax(220px, 1.5fr) 120px 100px 100px 120px;
    gap: 16px;
    align-items: center;
}

.tickets-header {
    padding: 13px 18px;
    background: var(--surface-soft);
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 9px;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tickets-row {
    padding: 15px 18px;
    border-bottom: 1px solid var(--border);
    font-size: 10px;
}

.tickets-row:last-child {
    border-bottom: none;
}

.ticket-id {
    color: var(--primary);
    font-weight: 700;
}

.ticket-issue strong {
    display: block;
    font-size: 10px;
    margin-bottom: 4px;
}

.ticket-issue small {
    display: block;
    color: var(--text-secondary);
    line-height: 1.45;
}

.priority-badge,
.status-badge {
    display: inline-flex;
    width: fit-content;
    padding: 4px 7px;
    border-radius: 5px;
    font-size: 8px;
    font-weight: 700;
}

.priority-badge.high,
.priority-badge.critical {
    color: var(--danger);
    background: var(--danger-soft);
}

.priority-badge.medium {
    color: var(--warning);
    background: var(--warning-soft);
}

.priority-badge.low {
    color: var(--success);
    background: var(--success-soft);
}

.status-badge.open {
    color: var(--primary);
    background: var(--primary-soft);
}

.tickets-empty {
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 7px;
    color: var(--text-secondary);
    text-align: center;
}

.tickets-empty strong {
    color: var(--text);
    font-size: 13px;
}

.tickets-empty span {
    font-size: 11px;
}

/* Ticket confirmation */

.ticket-message {
    min-width: min(100%, 500px);
}

.ticket-message p {
    margin: 8px 0 14px;
    color: var(--text-secondary);
    font-size: 11px;
}

.ticket-chat-card {
    border: 1px solid var(--border);
    border-radius: 9px;
    overflow: hidden;
    margin-bottom: 14px;
}

.ticket-chat-field {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    padding: 9px 11px;
    border-bottom: 1px solid var(--border);
    font-size: 10px;
}

.ticket-chat-field:last-child {
    border-bottom: none;
}

.ticket-chat-field span {
    color: var(--text-muted);
}

.ticket-chat-field strong {
    text-align: right;
}

.ticket-chat-description {
    align-items: flex-start;
}

.ticket-chat-description strong {
    max-width: 70%;
    line-height: 1.45;
}

.chat-ticket-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.ticket-chat-cancel,
.ticket-chat-confirm {
    padding: 8px 12px;
    border-radius: 7px;
    cursor: pointer;
    font-size: 10px;
    font-weight: 650;
}

.ticket-chat-cancel {
    background: var(--surface-soft);
    border: 1px solid var(--border-dark);
    color: var(--text);
}

.ticket-chat-confirm {
    background: var(--primary);
    color: #ffffff;
}

.ticket-chat-confirm:hover {
    background: var(--primary-dark);
}

/* Knowledge Management */

.knowledge-view {
    width: 100%;
}

.knowledge-upload-card {
    max-width: 850px;
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.knowledge-upload-icon {
    width: 54px;
    height: 54px;
    flex: 0 0 auto;
    border-radius: 12px;
    background: var(--primary-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 25px;
    font-weight: 700;
}

.knowledge-upload-content {
    flex: 1;
    min-width: 0;
}

.knowledge-upload-content h3 {
    color: var(--text);
    font-size: 19px;
    margin: 4px 0 8px;
}

.knowledge-upload-content p {
    max-width: 680px;
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.65;
    margin-bottom: 20px;
}

.file-upload-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 14px;
    margin-bottom: 9px;
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    background: var(--surface-soft);
    color: var(--text);
    font-size: 11px;
    font-weight: 650;
    cursor: pointer;
}

.file-upload-label:hover {
    border-color: #93c5fd;
    background: var(--primary-soft);
    color: var(--primary);
}

#pdfFileInput {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.selected-file {
    width: 100%;
    max-width: 650px;
    min-height: 40px;
    padding: 10px 12px;
    margin-bottom: 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-soft);
    color: var(--text-secondary);
    font-size: 11px;
    display: flex;
    align-items: center;
}

.upload-button {
    padding: 10px 17px;
    border-radius: 8px;
    background: var(--primary);
    color: #ffffff;
    cursor: pointer;
    font-size: 11px;
    font-weight: 650;
}

.upload-button:hover {
    background: var(--primary-dark);
}

.upload-button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.upload-status {
    min-height: 20px;
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 11px;
    line-height: 1.5;
}

.knowledge-process {
    max-width: 850px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 13px;
    margin-top: 18px;
}

.knowledge-process-card {
    padding: 17px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 11px;
}

.knowledge-process-card span {
    display: block;
    color: var(--primary);
    font-size: 10px;
    font-weight: 750;
    margin-bottom: 9px;
}

.knowledge-process-card strong {
    display: block;
    font-size: 12px;
    margin-bottom: 5px;
}

.knowledge-process-card p {
    color: var(--text-secondary);
    font-size: 10px;
    line-height: 1.5;
}

/* Responsive */

@media (max-width: 1100px) {
    .quick-actions-grid {
        grid-template-columns: 1fr;
    }

    .operations-grid {
        grid-template-columns: 1fr;
    }

    .tickets-header,
    .tickets-row {
        grid-template-columns: 90px minmax(180px, 1.5fr) 100px 90px 90px 105px;
    }
}

@media (max-width: 850px) {
    .sidebar {
        width: 210px;
    }

    .main-content {
        margin-left: 210px;
    }

    .page-content {
        padding: 28px 22px 50px;
    }

    .topbar {
        padding: 0 22px;
    }

    .tickets-card {
        overflow-x: auto;
    }

    .tickets-header,
    .tickets-row {
        min-width: 750px;
    }

    .knowledge-process {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 650px) {
    .sidebar {
        position: static;
        width: 100%;
        min-height: auto;
    }

    .sidebar-nav {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        padding-bottom: 10px;
    }

    .sidebar-label {
        padding-top: 15px;
    }

    .management-label,
    .sidebar-footer {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .topbar {
        min-height: 58px;
        height: auto;
        padding: 12px 16px;
    }

    .topbar-left {
        display: none;
    }

    .topbar-right {
        width: 100%;
        justify-content: space-between;
    }

    .page-content {
        padding: 22px 15px 40px;
    }

    .page-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .page-heading h2 {
        font-size: 23px;
    }

    .chat-container {
        height: 430px;
        padding: 16px;
    }

    .message-content {
        max-width: 82%;
    }

    .chat-input-area {
        flex-direction: column;
        align-items: stretch;
    }

    #sendButton {
        justify-content: center;
    }

    .knowledge-upload-card {
        padding: 22px;
        flex-direction: column;
    }

    .knowledge-process {
        grid-template-columns: 1fr;
    }
}