/* ============================================================================
 * DCRai.BlazorChatAssistant - DCR Flow & Designer Theme
 * Inspired directly by DCR Flow (flow.css / flow-variables.css)
 * and DCR Designer / Sketcher (dcr-classic.css / DCR.js)
 * ============================================================================ */

:root {
    /* Brand Colors (from DCR Flow & DCR Designer) */
    --dcr-navy:          #162B43; /* Flow/Designer chrome background */
    --dcr-navy-dark:     #0F142E; /* Flow footer / dark chrome */
    --dcr-navy-surface:  #1F3754; /* Elevated navy layer */
    --dcr-navy-border:   #2B486B; /* Border for dark chrome */

    --dcr-blue:          #005387; /* DCR Signal Blue (Primary) */
    --dcr-blue-hover:    #004068; /* Signal Blue hover */
    --dcr-blue-active:   #003150; /* Signal Blue active */
    --dcr-blue-light:    #1A6BFF; /* Designer relation / accent blue */
    --dcr-blue-subtle:   #EBF3F9; /* Pale blue container */
    --dcr-blue-border:   #C5DCED;

    --dcr-sky:           #F5F7FA; /* DCR Flow Sky (Page Background) */
    --dcr-canvas:        #F1F6FE; /* DCR Designer Canvas */
    --dcr-surface:       #FFFFFF; /* White card surface */

    --dcr-activity-bg:   #FCFBF8; /* DCR Designer Activity Note Paper */
    --dcr-activity-border: #DCD8CD; /* DCR Activity stroke */

    --dcr-green:         #237F52; /* DCR Signal Green (Success / Executed / Accepting) */
    --dcr-green-subtle:  #EBF7EE;
    --dcr-green-border:  #B5E2C6;

    --dcr-amber:         #FFA800; /* DCR Designer Amber / Pending Warning */
    --dcr-yellow:        #F5A400; /* DCR School Bus Yellow */
    --dcr-amber-subtle:  #FFF9E6;
    --dcr-amber-border:  #FFE082;

    --dcr-auburn:        #922724; /* DCR Vivid Auburn (Mandatory / Alert) */
    --dcr-auburn-subtle: #FDF0F0;
    --dcr-auburn-border: #F5C6C6;

    --dcr-slate:         #7C878E; /* DCR Aluminium / Neutral Info */
    --dcr-border:        #E2E8F0; /* Clean border */
    --dcr-border-strong: #CBD5E1;

    /* Metrics & Geometry */
    --control-radius:    4px;
    --layer-radius:      8px;
    --font-sans:         'Public Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono:         'JetBrains Mono', ui-monospace, Consolas, monospace;
}

/* Global Typography & Background */
body {
    background-color: var(--dcr-sky);
    font-family: var(--font-sans);
    color: #1A1A2E;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

code, kbd, samp, pre {
    font-family: var(--font-mono);
}

/* Top Navigation Bar (DCR Navy Chrome) */
.dcr-navbar {
    background-color: var(--dcr-navy) !important;
    border-bottom: 1px solid var(--dcr-navy-border) !important;
    box-shadow: 0 2px 8px rgba(15, 20, 46, 0.15);
    height: 58px;
}

.dcr-navbar-brand {
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #FFFFFF !important;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.dcr-brand-logo {
    display: inline-flex;
    align-items: center;
    color: #FFFFFF;
}

.dcr-brand-logo svg {
    height: 22px;
    width: auto;
}

.dcr-navbar-tag {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.12);
    color: #9FDBFF;
    border: 1px solid rgba(159, 219, 255, 0.25);
    padding: 2px 6px;
    border-radius: var(--control-radius);
}

.dcr-nav-btn {
    border-radius: var(--control-radius);
    font-size: 0.82rem;
    font-weight: 500;
    transition: all 0.15s ease-in-out;
}

.dcr-breadcrumb-badge {
    background-color: var(--dcr-navy-surface);
    color: #E2E8F0;
    border: 1px solid var(--dcr-navy-border);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
}

/* Dual Pane Layout */
.cockpit-container {
    height: calc(100vh - 58px);
    overflow: hidden;
    background-color: var(--dcr-sky);
}

.chat-pane {
    height: 100%;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--dcr-border);
    background-color: var(--dcr-surface);
}

.tasklist-pane {
    height: 100%;
    overflow-y: auto;
    background-color: var(--dcr-sky);
    padding: 0.85rem 1rem 1rem 1rem;
}

/* Chat Messages */
.chat-messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background-color: #FFFFFF;
}

.chat-bubble {
    max-width: 82%;
    padding: 0.85rem 1.15rem;
    border-radius: 12px;
    font-size: 0.92rem;
    line-height: 1.55;
    word-break: break-word;
}

.chat-bubble-user {
    align-self: flex-end;
    background: linear-gradient(145deg, var(--dcr-blue) 0%, #004570 100%);
    color: #FFFFFF;
    border-bottom-right-radius: 3px;
    box-shadow: 0 2px 4px rgba(0, 83, 135, 0.2);
}

.chat-bubble-assistant {
    align-self: flex-start;
    background-color: #FFFFFF;
    color: #1A1A2E;
    border-bottom-left-radius: 3px;
    border: 1px solid var(--dcr-border);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.chat-bubble-system {
    align-self: center;
    background-color: var(--dcr-blue-subtle);
    color: var(--dcr-blue);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    border: 1px solid var(--dcr-blue-border);
}

.dcr-avatar-badge {
    width: 24px;
    height: 24px;
    background-color: var(--dcr-blue-subtle);
    color: var(--dcr-blue);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

/* Tool Approval Card (Human-in-the-Loop) */
.tool-approval-card {
    align-self: flex-start;
    max-width: 88%;
    width: 100%;
    border: 1px solid var(--dcr-amber-border);
    border-left: 5px solid var(--dcr-amber);
    background-color: var(--dcr-amber-subtle);
    border-radius: var(--layer-radius);
    padding: 1.1rem;
    box-shadow: 0 4px 12px rgba(245, 164, 0, 0.12);
}

.tool-proposal-item {
    background-color: #FFFFFF;
    border: 1px solid #EAE6DB;
    border-radius: 6px;
    padding: 0.85rem;
    margin-bottom: 0.75rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

/* Task Cards (DCR Designer / Flow Styling) */
.task-card {
    transition: all 0.2s ease-in-out;
    border-radius: 6px;
    margin-bottom: 0.65rem;
    background-color: var(--dcr-activity-bg);
    border: 1px solid var(--dcr-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.task-card:hover {
    border-color: var(--dcr-border-strong);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.06);
}

.task-card-mandatory {
    border-left: 4px solid var(--dcr-auburn) !important;
}

.task-card-optional {
    border-left: 4px solid var(--dcr-blue) !important;
}

.task-card-completed {
    border: 1.5px solid var(--dcr-green) !important;
    background-color: var(--dcr-green-subtle) !important;
}

.task-card-blocked {
    opacity: 0.65;
    background-color: #F1F5F9 !important;
    border-left: 4px solid var(--dcr-slate) !important;
}

.dcr-act-id {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--control-radius);
    background-color: var(--dcr-blue-subtle);
    color: var(--dcr-blue);
    border: 1px solid var(--dcr-blue-border);
}

.dcr-role-badge {
    font-size: 0.7rem;
    font-weight: 500;
    color: #475569;
    background-color: #F1F5F9;
    border: 1px solid var(--dcr-border);
    border-radius: var(--control-radius);
    padding: 2px 6px;
}

.dcr-recorded-value {
    background-color: #FFFFFF;
    border: 1px solid var(--dcr-green-border);
    border-radius: var(--control-radius);
    padding: 3px 8px;
    font-size: 0.78rem;
    color: var(--dcr-green);
    margin-top: 4px;
}

/* Chat Input Bar */
.chat-input-container {
    padding: 0.85rem 1.15rem;
    border-top: 1px solid var(--dcr-border);
    background-color: #FFFFFF;
}

.chat-input-box {
    border-radius: 20px;
    padding-left: 1rem;
    border: 1.5px solid var(--dcr-border);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.chat-input-box:focus {
    border-color: var(--dcr-blue);
    box-shadow: 0 0 0 3px rgba(0, 83, 135, 0.15);
}

.btn-dcr-send {
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--dcr-blue);
    color: #FFFFFF;
    border: none;
    transition: background-color 0.15s ease-in-out;
}

.btn-dcr-send:hover:not(:disabled) {
    background-color: var(--dcr-blue-hover);
    color: #FFFFFF;
}

.btn-dcr-send:disabled {
    background-color: #CBD5E1;
    color: #FFFFFF;
}

/* DCR Buttons */
.btn-dcr-primary {
    background-color: var(--dcr-blue);
    border-color: var(--dcr-blue);
    color: #FFFFFF;
    border-radius: var(--control-radius);
    font-weight: 500;
}

.btn-dcr-primary:hover,
.btn-dcr-primary:focus {
    background-color: var(--dcr-blue-hover);
    border-color: var(--dcr-blue-hover);
    color: #FFFFFF;
}

.btn-dcr-success {
    background-color: var(--dcr-green);
    border-color: var(--dcr-green);
    color: #FFFFFF;
    border-radius: var(--control-radius);
    font-weight: 500;
}

.btn-dcr-success:hover {
    background-color: #1B6541;
    border-color: #1B6541;
    color: #FFFFFF;
}

.btn-dcr-outline {
    border-color: var(--dcr-blue);
    color: var(--dcr-blue);
    border-radius: var(--control-radius);
    font-weight: 500;
}

.btn-dcr-outline:hover {
    background-color: var(--dcr-blue-subtle);
    border-color: var(--dcr-blue);
    color: var(--dcr-blue);
}

/* Modals */
.dcr-modal-header {
    background-color: var(--dcr-navy) !important;
    color: #FFFFFF !important;
    border-bottom: 2px solid var(--dcr-navy-border) !important;
}

/* Markdig Markdown Rendering */
.chat-bubble-assistant pre {
    background-color: #1E293B;
    color: #F8FAFC;
    padding: 0.65rem 0.9rem;
    border-radius: var(--control-radius);
    margin: 0.5rem 0;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.5;
}

.chat-bubble-assistant code:not(pre code) {
    background-color: #F1F5F9;
    color: #B91C1C;
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-size: 0.86em;
}

.chat-bubble-assistant ul,
.chat-bubble-assistant ol {
    margin: 0.35rem 0 0.35rem 1.25rem;
    padding-left: 0;
}

.chat-bubble-assistant li {
    margin-bottom: 0.2rem;
}

.chat-bubble-assistant p {
    margin-bottom: 0.45rem;
}

.chat-bubble-assistant p:last-child {
    margin-bottom: 0;
}

.chat-bubble-assistant table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88em;
    margin: 0.5rem 0;
}

.chat-bubble-assistant th,
.chat-bubble-assistant td {
    border: 1px solid var(--dcr-border);
    padding: 0.35rem 0.65rem;
    text-align: left;
}

.chat-bubble-assistant th {
    background-color: #F8FAFC;
    font-weight: 600;
}

/* DCR Flow Nav Pills */
.dcr-pills .nav-link {
    font-size: 0.82rem;
    font-weight: 600;
    color: #475569;
    border-radius: var(--control-radius);
    padding: 0.35rem 0.75rem;
    border: 1px solid transparent;
}

.dcr-pills .nav-link.active {
    background-color: var(--dcr-blue);
    color: #FFFFFF;
}

.dcr-pills .nav-link:hover:not(.active) {
    background-color: #E2E8F0;
    color: #0F172A;
}

/* Rich HTML Activity & Graph Descriptions */
.dcr-task-description,
.dcr-graph-description {
    line-height: 1.45;
    word-break: break-word;
}

.dcr-task-description p,
.dcr-graph-description p {
    margin-bottom: 0.35rem;
}

.dcr-task-description p:last-child,
.dcr-graph-description p:last-child {
    margin-bottom: 0;
}

.dcr-task-description ul,
.dcr-task-description ol,
.dcr-graph-description ul,
.dcr-graph-description ol {
    margin-bottom: 0.35rem;
    padding-left: 1.25rem;
}

.dcr-task-description a,
.dcr-graph-description a {
    color: var(--dcr-blue);
    text-decoration: underline;
}

.dcr-task-description a:hover,
.dcr-graph-description a:hover {
    color: var(--dcr-blue-hover);
}

/* Blazor Error UI default state (hidden unless activated by framework error) */
#blazor-error-ui {
    display: none;
}