/* ── Theme Variables ────────────────────────────────────────────────── */

:root,
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-sidebar: #1b2a4a;
    --bg-sidebar-hover: rgba(255, 255, 255, 0.1);
    --bg-sidebar-active: rgba(212, 175, 55, 0.2);
    --bg-input: #ffffff;
    --bg-user-bubble: #1b2a4a;
    --bg-assistant-bubble: #f1f3f5;
    --text-user-bubble: #ffffff;
    --bg-login-gradient-start: #1b2a4a;
    --bg-login-gradient-end: #0f1b33;
    --bg-login-card: #ffffff;

    --text-primary: #1a1a2e;
    --text-secondary: #495057;
    --text-tertiary: #6c757d;
    --text-sidebar: #d0d7e3;
    --text-sidebar-active: #ffffff;
    --text-on-primary: #ffffff;
    --text-login-heading: #1b2a4a;

    --border-color: #dee2e6;
    --border-input: #ced4da;
    --border-input-focus: #d4af37;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.2);

    --accent: #1b2a4a;
    --accent-hover: #2a3f6e;
    --accent-gold: #d4af37;
    --accent-gold-hover: #c4a030;
    --danger: #dc3545;
    --warning-bg: #fff3cd;
    --warning-text: #856404;
    --warning-border: #ffc107;
}

[data-theme="dark"] {
    --bg-primary: #141e30;
    --bg-secondary: #0f1724;
    --bg-tertiary: #0b1018;
    --bg-sidebar: #0b1018;
    --bg-sidebar-hover: rgba(255, 255, 255, 0.06);
    --bg-sidebar-active: rgba(212, 175, 55, 0.15);
    --bg-input: #1b2740;
    --bg-user-bubble: #2a3f6e;
    --bg-assistant-bubble: #1b2740;
    --text-user-bubble: #e8e6e1;
    --bg-login-gradient-start: #141e30;
    --bg-login-gradient-end: #0b1018;
    --bg-login-card: #1b2740;

    --text-primary: #e8e6e1;
    --text-secondary: #8c95a4;
    --text-tertiary: #5a6577;
    --text-sidebar: #8c95a4;
    --text-sidebar-active: #ffffff;
    --text-on-primary: #ffffff;
    --text-login-heading: #e8e6e1;

    --border-color: #2a3a55;
    --border-input: #3a4b66;
    --border-input-focus: #d4af37;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);

    --accent: #d4af37;
    --accent-hover: #e0c050;
    --accent-gold: #d4af37;
    --accent-gold-hover: #e0c050;
    --danger: #f87171;
    --warning-bg: #422006;
    --warning-text: #fbbf24;
    --warning-border: #92400e;
}

/* ── Base ──────────────────────────────────────────────────────────── */

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    margin: 0;
    height: 100%;
    transition: background-color 0.2s, color 0.2s;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
}

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

a, .btn-link {
    color: var(--accent);
}

.btn-primary {
    color: var(--text-on-primary);
    background-color: var(--accent);
    border-color: var(--accent);
    font-weight: 600;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-outline-secondary {
    color: var(--text-primary);
    border-color: var(--border-color);
    background-color: transparent;
    font-weight: 500;
}

.btn-outline-secondary:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem var(--bg-primary), 0 0 0 0.25rem var(--accent);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn:focus:not(:focus-visible) {
    outline: none;
}

.btn:focus-visible,
.form-control:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #22c55e;
}

.invalid {
    outline: 1px solid var(--danger);
}

.validation-message {
    color: var(--danger);
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

/* ── App Shell / Sidebar Layout ────────────────────────────────────── */

.app-shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.app-sidebar {
    width: 220px;
    background: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    transition: background-color 0.2s;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1.25rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-logo {
    width: 2rem;
    height: 2rem;
    object-fit: contain;
    border-radius: 4px;
}

.sidebar-brand {
    font-size: 1.15rem;
    font-weight: 700;
    color: #d4af37;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0.75rem 0.5rem;
    gap: 0.25rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.15s, color 0.15s;
    border: none;
    background: none;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.sidebar-link:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

.sidebar-link:hover {
    background: var(--bg-sidebar-hover);
    color: var(--text-sidebar-active);
    text-decoration: none;
}

.sidebar-link.active {
    background: var(--bg-sidebar-active);
    color: var(--text-sidebar-active);
    border-left: 3px solid var(--accent-gold, #d4af37);
}

.new-chat-btn {
    border: 1px dashed rgba(255, 255, 255, 0.2);
    margin-bottom: 0.25rem;
}

.new-chat-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.new-chat-btn .sidebar-icon {
    font-size: 1.3rem;
    font-weight: 700;
}

.sidebar-icon {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-label {
    white-space: nowrap;
}

.sidebar-footer {
    padding: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-footer form {
    display: contents;
}

.signout-btn:hover {
    color: var(--danger) !important;
}

/* Theme toggle visibility */
[data-theme="light"] .theme-label-dark {
    display: none;
}

[data-theme="dark"] .theme-label-light {
    display: none;
}

.app-main {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    transition: background-color 0.2s;
}

/* ── Mobile menu toggle ────────────────────────────────────────────── */

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 0.625rem;
    left: 0.625rem;
    z-index: 900;
    background: var(--accent);
    color: var(--text-on-primary);
    border: none;
    border-radius: 12px;
    width: 40px;
    height: 40px;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.2s ease;
}

.mobile-menu-toggle:hover {
    background: var(--accent-hover);
}

.mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* Mobile overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.sidebar-overlay.active {
    display: block;
}

/* ── Responsive breakpoints ─────────────────────────────────────────── */

/* 1. Mobile - Small (< 480px) */
@media (max-width: 480px) {
    .mobile-menu-toggle {
        display: flex;
        top: 0.5rem;
        left: 0.5rem;
        width: 36px;
        height: 36px;
    }

    .chat-header {
        display: none !important;
    }

    .chat-messages {
        padding: 0.5rem 0.5rem;
        gap: 0.75rem;
    }

    .message-bubble {
        padding: 0.625rem 0.75rem;
        font-size: 0.9rem;
        border-radius: 12px;
    }

    .chat-input-area {
        padding: 0.5rem 0.625rem;
    }

    .chat-input {
        padding: 0.625rem 0.75rem;
        font-size: 1rem;
        border-radius: 14px;
    }

    .chat-send-btn {
        padding: 0.625rem 0.875rem;
        min-width: 60px;
    }

    .login-card {
        padding: 1.5rem;
        border-radius: 12px;
    }

    .login-logo {
        font-size: 2.5rem;
    }
}

/* 2. Mobile - Standard (481px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .chat-header {
        display: none !important;
    }

    .chat-messages {
        padding: 0.75rem 1rem;
        gap: 1rem;
    }

    .message-bubble {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }

    .chat-input-area {
        padding: 0.75rem 1rem;
    }
}

/* 3. Tablets (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .app-sidebar {
        width: 200px;
    }

    .sidebar-brand {
        font-size: 1.125rem;
    }

    .chat-messages {
        padding: 1rem 2rem;
    }

    .chat-message {
        max-width: 100%;
    }

    .chat-input-wrapper {
        max-width: 85%;
    }
}

/* 4. Large Desktops (> 1024px) */
@media (min-width: 1025px) {
    .chat-messages {
        padding: 1.5rem 4rem;
    }

    .chat-message {
        max-width: 100%;
    }

    .chat-input-wrapper {
        max-width: 800px;
    }

    .markdown-content {
        font-size: 1.05rem;
    }
}

/* Common Mobile/Tablet Rules (up to 768px) */
@media (max-width: 768px) {
    /* Hide sidebar by default on mobile, show when active */
    .app-sidebar {
        position: fixed;
        top: 0;
        left: -240px;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s ease-in-out;
    }

    .app-sidebar.active {
        left: 0;
        box-shadow: var(--shadow-lg);
    }
    
    /* Push down chat header when menu is visible */
    .chat-header {
        position: relative;
        z-index: 1;
    }

    /* Make app-main full width */
    .app-main {
        width: 100%;
    }

    /* Mobile-specific chat adjustments */
    .chat-container {
        height: 100vh;
        height: 100dvh; /* Dynamic viewport height for mobile browsers */
    }

    .chat-header-info {
        gap: 0.5rem;
    }

    .chat-subtitle {
        font-size: 0.7rem;
    }

    .chat-message {
        max-width: 100%;
        gap: 0.4rem;
    }

    .message-avatar {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 1rem;
    }

    .message-time {
        font-size: 0.65rem;
    }

    /* Input area */
    .chat-input-area {
        padding: 0.625rem 0.75rem;
    }

    .chat-input-wrapper {
        max-width: 100%;
        gap: 0.5rem;
    }

    .chat-input {
        max-height: 120px;
    }

    .chat-send-btn {
        border-radius: 18px;
        font-size: 0.875rem;
    }

    /* Improve markdown readability on mobile */
    .markdown-content {
        line-height: 1.65;
    }

    .markdown-content p {
        margin: 0 0 0.7rem 0;
    }

    .markdown-content h1 {
        font-size: 1.15rem;
        margin: 0.75rem 0 0.5rem 0;
    }
    .markdown-content h2 {
        font-size: 1.05rem;
        margin: 0.75rem 0 0.5rem 0;
    }
    .markdown-content h3 {
        font-size: 1rem;
        margin: 0.75rem 0 0.5rem 0;
    }

    .markdown-content pre {
        margin: 0.5rem -0.375rem;
        border-radius: 6px;
    }

    .markdown-content pre code {
        font-size: 0.78em;
        padding: 0.625rem 0.75rem;
    }

    .markdown-content ul,
    .markdown-content ol {
        padding-left: 1.25rem;
        margin: 0.5rem 0;
    }

    .markdown-content li {
        margin-bottom: 0.3rem;
    }

    .markdown-content blockquote {
        margin: 0.625rem 0;
        padding: 0.625rem 0.875rem;
        border-left-width: 3px;
    }

    .markdown-content table {
        font-size: 0.82em;
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Better touch targets */
    .btn {
        min-height: 44px;
        padding: 0.625rem 1rem;
    }

    .btn-sm {
        min-height: 38px;
        padding: 0.5rem 0.875rem;
        font-size: 0.85rem;
    }

    /* Empty state on mobile */
    .chat-empty {
        padding: 2rem 1rem;
    }

    .chat-empty-icon {
        font-size: 3rem;
    }

    .chat-empty-title {
        font-size: 1.25rem;
    }

    .chat-empty-subtitle {
        font-size: 0.875rem;
    }
}

/* ── Login page ─────────────────────────────────────────────────────── */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-login-gradient-start) 0%, var(--bg-login-gradient-end) 100%);
    padding: 1rem;
}

.login-card {
    background: var(--bg-login-card);
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-login-heading);
    margin-bottom: 0.25rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    letter-spacing: 0.04em;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.login-card .form-control {
    background: var(--bg-input);
    border-color: var(--border-input);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.6rem 0.9rem;
}

.login-card .form-control:focus {
    border-color: var(--border-input-focus);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

.login-card .form-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.login-card .btn-primary {
    border-radius: 10px;
    padding: 0.6rem;
    font-weight: 600;
}

.login-card .alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    color: var(--danger);
    border-radius: 10px;
}

/* ── Chat page ──────────────────────────────────────────────────────── */

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--bg-secondary);
    transition: background-color 0.2s;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    transition: background-color 0.2s, border-color 0.2s;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chat-logo {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
    border-radius: 6px;
}

.chat-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    letter-spacing: 0.02em;
}

.chat-subtitle {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.chat-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    text-align: center;
    color: var(--text-secondary);
    padding: 3rem;
}

.chat-empty-logo {
    width: 4.5rem;
    height: 4.5rem;
    margin-bottom: 1.5rem;
    object-fit: contain;
    border-radius: 12px;
}

.chat-empty-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

.chat-empty-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 420px;
    line-height: 1.6;
}

.chat-message {
    display: flex;
    gap: 0.6rem;
    max-width: 100%;
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.assistant-message {
    align-self: flex-start;
}

.message-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
    overflow: hidden;
}

.message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.message-content {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.user-message .message-content {
    align-items: flex-end;
}

.message-bubble {
    padding: 1rem 1.25rem;
    border-radius: 16px;
    line-height: 1.7;
    word-break: break-word;
    font-size: 0.95rem;
    max-width: 100%;
    overflow-wrap: break-word;
}

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

.assistant-message .message-bubble {
    background: var(--bg-assistant-bubble);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.message-time {
    font-size: 0.68rem;
    color: var(--text-tertiary);
    padding: 0 0.25rem;
}

/* ── Markdown content inside chat bubbles ──────────────────────────── */

.markdown-content {
    line-height: 1.7;
    font-size: 0.95rem;
}

.markdown-content p {
    margin: 0 0 0.8rem 0;
    line-height: 1.75;
}

.markdown-content p:last-child {
    margin-bottom: 0;
}

.markdown-content a {
    color: var(--accent-gold);
    text-decoration: underline;
    overflow-wrap: break-word;
    word-break: break-word;
}

.markdown-content a:hover {
    color: var(--accent-gold-hover);
}

.user-message .markdown-content a {
    color: #fef3c7;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.6);
}

.user-message .markdown-content a:hover {
    color: #ffffff;
    text-decoration-color: rgba(255, 255, 255, 0.9);
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin: 1rem 0 0.6rem 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.4;
    font-weight: 600;
}

.markdown-content h1:first-child,
.markdown-content h2:first-child,
.markdown-content h3:first-child {
    margin-top: 0;
}

.markdown-content h1 { font-size: 1.3rem; font-weight: 700; }
.markdown-content h2 { font-size: 1.2rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.3rem; }
.markdown-content h3 { font-size: 1.1rem; }
.markdown-content h4 { font-size: 1rem; }

.markdown-content code {
    background: rgba(0, 0, 0, 0.08);
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.85em;
}

.user-message .markdown-content code {
    background: rgba(255, 255, 255, 0.15);
}

.markdown-content pre {
    margin: 0.5rem 0;
    border-radius: 8px;
    overflow-x: auto;
}

.markdown-content pre code {
    display: block;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 8px;
    font-size: 0.83em;
    line-height: 1.5;
    white-space: pre;
}

[data-theme="dark"] .assistant-message .markdown-content pre code {
    background: rgba(0, 0, 0, 0.3);
}

.user-message .markdown-content pre code {
    background: rgba(0, 0, 0, 0.2);
}

.markdown-content ul,
.markdown-content ol {
    margin: 0.6rem 0;
    padding-left: 1.75rem;
    line-height: 1.8;
}

.markdown-content li {
    margin-bottom: 0.4rem;
}

.markdown-content li > p {
    margin: 0.25rem 0;
}

.markdown-content blockquote {
    margin: 0.75rem 0;
    padding: 0.75rem 1rem;
    border-left: 4px solid var(--accent-gold);
    background: rgba(212, 175, 55, 0.08);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    line-height: 1.7;
}

.user-message .markdown-content blockquote {
    border-left-color: rgba(255, 255, 255, 0.5);
    background: rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .markdown-content blockquote {
    background: rgba(212, 175, 55, 0.12);
}

.markdown-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 0.75rem 0;
}

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

.markdown-content th,
.markdown-content td {
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.6rem;
    text-align: left;
}

.markdown-content th {
    background: rgba(0, 0, 0, 0.04);
    font-weight: 600;
}

.markdown-content strong {
    font-weight: 700;
    color: var(--text-primary);
}

.markdown-content em {
    font-style: italic;
}

/* Legal citation styling */
.markdown-content p:has(> strong:first-child) {
    margin-top: 0.75rem;
}

/* Better spacing for structured legal content */
.assistant-message .message-bubble {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

/* Improve readability of dense legal text */
@media (min-width: 769px) {
    .assistant-message .message-bubble {
        max-width: 750px;
    }
}

/* Ensure long URLs don't break layout */
.markdown-content a {
    display: inline-block;
    max-width: 100%;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    align-items: center;
    padding: 0.75rem 1rem;
    min-width: 60px;
}

.typing-indicator span {
    width: 7px;
    height: 7px;
    background: var(--text-tertiary);
    border-radius: 50%;
    animation: typing 1.2s infinite;
}

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

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

/* Plan execution status */
.plan-status {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 0.35rem;
    font-style: italic;
}

/* Chat input */
.chat-input-area {
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    transition: background-color 0.2s, border-color 0.2s;
}

.chat-input-wrapper {
    display: flex;
    gap: 0.6rem;
    align-items: flex-end;
    max-width: 860px;
    margin: 0 auto;
}

.chat-input {
    flex: 1;
    padding: 0.75rem 1.125rem;
    border: 2px solid var(--border-input);
    border-radius: 24px;
    resize: none;
    font-size: 0.95rem;
    line-height: 1.5;
    max-height: 150px;
    overflow-y: auto;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
    font-family: inherit;
    background: var(--bg-input);
    color: var(--text-primary);
}

.chat-input::placeholder {
    color: var(--text-tertiary);
    font-style: italic;
}

.chat-input:focus {
    border-color: var(--border-input-focus);
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.15);
}

.chat-input:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

.chat-send-btn {
    border-radius: 22px;
    padding: 0.65rem 1.25rem;
    white-space: nowrap;
    flex-shrink: 0;
    font-weight: 600;
    font-size: 0.9rem;
}

/* ── Alert overrides ───────────────────────────────────────────────── */

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
    border-color: var(--warning-border);
    border-radius: 10px;
}

/* ── Blazor error UI ───────────────────────────────────────────────── */

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

/* ── Scrollbar styling ─────────────────────────────────────────────── */

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}