/* ============================================================
   IM Concern Assistant — Premium SaaS Chat UI
   ============================================================ */

/* --- CSS Variables --- */
:root {
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --primary-light: #e8f0fe;
    --primary-glow: rgba(26, 115, 232, 0.15);
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --surface: #ffffff;
    --surface-hover: #f8f9fb;
    --bg: #f0f2f5;
    --bg-pattern: radial-gradient(circle at 20% 50%, rgba(26, 115, 232, 0.03) 0%, transparent 50%),
                  radial-gradient(circle at 80% 20%, rgba(108, 92, 231, 0.03) 0%, transparent 50%),
                  radial-gradient(circle at 50% 80%, rgba(0, 184, 148, 0.02) 0%, transparent 50%);
    --text-primary: #1a1d23;
    --text-secondary: #5f6368;
    --text-tertiary: #9aa0a6;
    --border: #e1e4e8;
    --border-light: #f0f1f3;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --bot-bg: rgba(241, 243, 244, 0.7);
    --user-bg: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    --header-bg: linear-gradient(135deg, #1557b0 0%, #1a73e8 40%, #4285f4 100%);
    --green: #00b894;
    --green-light: #e6f9f3;
    --yellow: #fdcb6e;
    --yellow-light: #fef9e7;
    --red: #e17055;
    --red-light: #fef0ed;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    background-image: var(--bg-pattern);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Chat Container --- */
.chat-container {
    width: 100%;
    max-width: 760px;
    height: 92vh;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

/* --- Header --- */
.chat-header {
    background: var(--header-bg);
    color: #fff;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: visible;
    z-index: 10;
}

.chat-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.chat-header::after {
    content: '';
    position: absolute;
    bottom: -60%;
    left: 10%;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.header-text h1 {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.chat-header p {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 2px;
    font-weight: 400;
}

.header-link {
    color: rgba(255, 255, 255, 0.7) !important;
    font-size: 11px;
    margin-left: 8px;
    text-decoration: none;
    border-bottom: 1px dotted rgba(255, 255, 255, 0.4);
    transition: color var(--transition);
}

.header-link:hover {
    color: #fff !important;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 500;
}

.user-avatar {
    width: 30px;
    height: 30px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
}

.logout-btn {
    color: #fff;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    transition: background var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* --- Login Section --- */
.login-section {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(180deg, var(--surface) 0%, #f8f9fc 100%);
}

.login-card {
    text-align: center;
    padding: 48px 40px;
    max-width: 400px;
}

.login-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-light);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.login-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.3px;
}

.login-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.6;
}

.atlassian-login-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 28px;
    background: linear-gradient(135deg, #0052cc 0%, #0065ff 100%);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition);
    box-shadow: 0 4px 14px rgba(0, 82, 204, 0.3);
}

.atlassian-login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 82, 204, 0.4);
}

.atlassian-login-btn:active {
    transform: translateY(0);
}

/* --- Chat Body --- */
.chat-body {
    flex: 1;
    flex-direction: column;
    overflow: hidden;
}

/* --- Messages Area --- */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: linear-gradient(180deg, #fafbfc 0%, #f5f6f8 100%);
}

/* --- Custom Scrollbar --- */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.12);
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

/* --- Message Bubbles --- */
.message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    font-size: 14px;
    line-height: 1.6;
    word-wrap: break-word;
    animation: messageAppear 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message.bot {
    align-self: flex-start;
    background: var(--surface);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.message.user {
    align-self: flex-end;
    background: var(--user-bg);
    color: #fff;
    border-bottom-right-radius: 4px;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.25);
}

/* --- Ticket Cards --- */
.message.bot .ticket-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    margin-top: 10px;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.message.bot .ticket-card:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px var(--primary-glow);
}

.ticket-card .ticket-key {
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    letter-spacing: -0.2px;
}

.ticket-card .ticket-key:hover {
    text-decoration: underline;
}

.ticket-card .ticket-summary {
    margin-top: 5px;
    font-size: 13px;
    color: var(--text-primary);
    line-height: 1.5;
}

.ticket-card .ticket-meta {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.ticket-card .ticket-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--surface-hover);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
}

/* --- Keywords --- */
.keywords-used {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.keywords-used span {
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    margin: 0 2px;
    font-weight: 500;
}

/* --- Ticket Preview --- */
.ticket-preview {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px;
    margin-top: 10px;
    box-shadow: var(--shadow-sm);
}

.ticket-preview-field {
    margin-bottom: 14px;
}

.ticket-preview-field label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.ticket-preview-field textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: all var(--transition);
    background: var(--surface-hover);
}

.ticket-preview-field textarea:focus,
.ticket-preview-field input:focus,
.ticket-preview-field select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: var(--surface);
}

.ticket-preview-field input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    outline: none;
    transition: all var(--transition);
    background: var(--surface-hover);
}

.ticket-preview-row {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
}

.ticket-preview-field select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    outline: none;
    background: var(--surface-hover);
    transition: all var(--transition);
    cursor: pointer;
}

.required {
    color: var(--red);
    font-weight: normal;
}

.ticket-preview-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-secondary);
    padding-top: 10px;
    border-top: 1px solid var(--border-light);
}

/* --- Triage Card --- */
.triage-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 10px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.triage-card:hover {
    box-shadow: var(--shadow-md);
}

/* --- Solution Analysis Card --- */
.solution-analysis {
    background: var(--surface);
    border: 1px solid #c8e6c9;
    border-left: 4px solid var(--green);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 10px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.solution-analysis:hover {
    box-shadow: var(--shadow-md);
}

/* --- Template Grid --- */
.template-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.template-btn {
    padding: 7px 16px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    color: var(--primary);
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.template-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.template-btn:active {
    transform: translateY(0);
}

/* --- File Upload --- */
.file-upload-area {
    margin-top: 10px;
    display: flex;
    align-items: center;
}

.file-upload-btn {
    display: inline-block;
    padding: 8px 18px;
    background: linear-gradient(135deg, var(--primary) 0%, #4285f4 100%);
    color: #fff;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.25);
}

.file-upload-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
}

/* --- Input Area --- */
.chat-input-area {
    padding: 12px 16px 10px;
    background: var(--surface);
    border-top: 1px solid var(--border-light);
}

.chat-form {
    display: flex;
    gap: 8px;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 4px 4px 4px 6px;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.chat-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow), var(--shadow-md);
}

.chat-form input {
    flex: 1;
    padding: 10px 14px;
    border: none;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    background: transparent;
    color: var(--text-primary);
}

.chat-form input::placeholder {
    color: var(--text-tertiary);
}

.chat-form button {
    width: 40px;
    height: 40px;
    min-width: 40px;
    padding: 0;
    background: linear-gradient(135deg, var(--primary) 0%, #4285f4 100%);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

.chat-form button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 14px rgba(26, 115, 232, 0.4);
}

.chat-form button:active {
    transform: scale(0.95);
}

.chat-form button:disabled {
    background: var(--text-tertiary);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* --- Action Buttons --- */
.action-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    animation: messageAppear 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.action-buttons button {
    padding: 9px 20px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.action-buttons button:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.action-buttons button:active {
    transform: translateY(0);
}

.action-buttons button.primary {
    background: linear-gradient(135deg, var(--primary) 0%, #4285f4 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.25);
}

.action-buttons button.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #fff;
}

.action-buttons button.primary:active {
    transform: translateY(0);
}

.action-buttons button.disabled {
    opacity: 0.45;
    cursor: not-allowed;
    background: var(--surface-alt);
    color: var(--text-secondary);
    border-color: var(--border);
    pointer-events: auto;
}
.action-buttons button.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* --- Typing Indicator --- */
.typing-indicator {
    display: inline-flex;
    gap: 5px;
    padding: 10px 16px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--text-tertiary);
    border-radius: 50%;
    animation: bounce 1.4s ease-in-out infinite;
}

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

@keyframes bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
}

/* --- Toolbar --- */
.chat-toolbar {
    display: flex;
    gap: 4px;
    padding: 8px 4px 2px;
    justify-content: center;
}

.toolbar-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border: 1px solid var(--border-light);
    background: var(--surface);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition);
}

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

.toolbar-btn svg {
    opacity: 0.7;
}

.toolbar-btn:hover svg {
    opacity: 1;
}

/* --- Knowledge Base Card --- */
.kb-card {
    background: var(--yellow-light);
    border: 1px solid #fff3cd;
    border-left: 4px solid var(--yellow);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-top: 10px;
    box-shadow: var(--shadow-sm);
}

/* ============================================================
   DARK MODE
   ============================================================ */
body.dark-mode {
    --primary: #5b9aff;
    --primary-dark: #4080e0;
    --primary-light: rgba(91, 154, 255, 0.12);
    --primary-glow: rgba(91, 154, 255, 0.15);
    --surface: #1e2030;
    --surface-hover: #252840;
    --bg: #13141f;
    --bg-pattern: radial-gradient(circle at 20% 50%, rgba(91, 154, 255, 0.04) 0%, transparent 50%),
                  radial-gradient(circle at 80% 20%, rgba(108, 92, 231, 0.04) 0%, transparent 50%);
    --text-primary: #e2e4e9;
    --text-secondary: #9aa0b0;
    --text-tertiary: #6b7080;
    --border: #2a2d42;
    --border-light: #22253a;
    --bot-bg: rgba(30, 32, 48, 0.9);
    --user-bg: linear-gradient(135deg, #3a6fd8 0%, #5b9aff 100%);
    --header-bg: linear-gradient(135deg, #1a1d35 0%, #252a50 40%, #2d3560 100%);
    --green: #55efc4;
    --green-light: rgba(85, 239, 196, 0.1);
    --yellow: #ffeaa7;
    --yellow-light: rgba(255, 234, 167, 0.08);
    --red: #fab1a0;
    --red-light: rgba(250, 177, 160, 0.08);
    color: var(--text-primary);
    background: var(--bg);
    background-image: var(--bg-pattern);
}

body.dark-mode .chat-container {
    background: var(--surface);
    border-color: var(--border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

body.dark-mode .chat-header {
    background: var(--header-bg);
}

body.dark-mode .chat-messages {
    background: linear-gradient(180deg, #171928 0%, #13141f 100%);
}

body.dark-mode .message.bot {
    background: var(--surface);
    color: var(--text-primary);
    border-color: var(--border);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

body.dark-mode .message.user {
    background: var(--user-bg);
    box-shadow: 0 2px 8px rgba(91, 154, 255, 0.2);
}

body.dark-mode .chat-input-area {
    background: var(--surface);
    border-color: var(--border);
}

body.dark-mode .chat-form {
    background: var(--surface-hover);
    border-color: var(--border);
}

body.dark-mode .chat-form:focus-within {
    border-color: var(--primary);
}

body.dark-mode .chat-form input {
    color: var(--text-primary);
}

body.dark-mode .chat-form button {
    background: linear-gradient(135deg, #3a6fd8 0%, #5b9aff 100%);
}

body.dark-mode .ticket-preview {
    background: var(--surface);
    border-color: var(--border);
}

body.dark-mode .ticket-preview-field textarea,
body.dark-mode .ticket-preview-field input,
body.dark-mode .ticket-preview-field select {
    background: var(--surface-hover);
    color: var(--text-primary);
    border-color: var(--border);
}

body.dark-mode .ticket-preview-field textarea:focus,
body.dark-mode .ticket-preview-field input:focus,
body.dark-mode .ticket-preview-field select:focus {
    border-color: var(--primary);
    background: #1a1d35;
}

body.dark-mode .solution-analysis {
    background: var(--surface);
    border-color: var(--border);
    border-left-color: var(--green);
}

body.dark-mode .triage-card {
    background: var(--surface);
    border-color: var(--border);
    border-left-color: var(--primary);
}

body.dark-mode .ticket-card {
    background: var(--surface);
    border-color: var(--border);
}

body.dark-mode .ticket-card:hover {
    border-color: var(--primary);
}

body.dark-mode .template-btn {
    background: var(--surface-hover);
    color: var(--primary);
    border-color: var(--border);
}

body.dark-mode .template-btn:hover {
    background: var(--primary-light);
}

body.dark-mode .action-buttons button {
    border-color: var(--border);
    background: var(--surface-hover);
    color: var(--text-primary);
}

body.dark-mode .action-buttons button:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

body.dark-mode .action-buttons button.primary {
    background: linear-gradient(135deg, #3a6fd8 0%, #5b9aff 100%);
    color: #fff;
    border: none;
}

body.dark-mode .action-buttons button.primary:hover {
    background: linear-gradient(135deg, #2d5fc0 0%, #4a88ee 100%);
    color: #fff;
}

body.dark-mode .toolbar-btn {
    background: var(--surface-hover);
    color: var(--text-secondary);
    border-color: var(--border);
}

body.dark-mode .toolbar-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

body.dark-mode .kb-card {
    background: var(--yellow-light);
    border-color: rgba(255, 234, 167, 0.15);
    border-left-color: var(--yellow);
}

body.dark-mode a {
    color: var(--primary);
}

body.dark-mode .login-section {
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}

body.dark-mode .login-card h2 {
    color: var(--text-primary);
}

body.dark-mode .login-card p {
    color: var(--text-secondary);
}

body.dark-mode .login-icon {
    background: var(--primary-light);
}

body.dark-mode .login-icon svg {
    stroke: var(--primary);
}

body.dark-mode .chat-messages::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
}

body.dark-mode .chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

body.dark-mode .keywords-used span {
    background: var(--primary-light);
    color: var(--primary);
}

body.dark-mode .ticket-card .ticket-meta span {
    background: var(--surface-hover);
}

body.dark-mode .ticket-preview-meta {
    border-top-color: var(--border);
}

body.dark-mode .file-upload-btn {
    background: linear-gradient(135deg, #3a6fd8 0%, #5b9aff 100%);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    body {
        align-items: stretch;
    }

    .chat-container {
        max-width: 100%;
        height: 100vh;
        border-radius: 0;
        border: none;
    }

    .chat-header {
        padding: 12px 14px;
    }

    .header-logo {
        width: 34px;
        height: 34px;
    }

    .header-logo svg {
        width: 22px;
        height: 22px;
    }

    .header-text h1 {
        font-size: 15px;
    }

    .chat-messages {
        padding: 14px;
        gap: 10px;
    }

    .message {
        max-width: 92%;
        font-size: 13px;
        padding: 10px 13px;
    }

    .chat-input-area {
        padding: 10px 12px 8px;
    }

    .action-buttons {
        gap: 6px;
    }

    .action-buttons button {
        padding: 8px 14px;
        font-size: 12px;
    }

    .chat-toolbar {
        gap: 3px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .toolbar-btn {
        padding: 4px 10px;
        font-size: 10px;
    }

    .toolbar-btn svg {
        width: 12px;
        height: 12px;
    }

    .ticket-preview-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 400px) {
    .header-text h1 {
        font-size: 14px;
    }

    .chat-header p {
        font-size: 11px;
    }

    .header-link {
        display: none;
    }

    .logout-btn {
        font-size: 11px;
        padding: 4px 10px;
    }
}

/* ============================================================
   FEATURE: Ticket Status Timeline
   ============================================================ */
.timeline {
    border-left: 3px solid var(--border);
    margin: 10px 0 10px 8px;
    padding-left: 16px;
}

.timeline-item {
    position: relative;
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -22px;
    top: 10px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    border: 2px solid var(--surface);
}

.timeline-item.active {
    color: var(--primary);
    font-weight: 600;
}

.timeline-item.active::before {
    background: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

body.dark-mode .timeline {
    border-left-color: var(--border);
}

body.dark-mode .timeline-item::before {
    border-color: var(--surface);
}

/* ============================================================
   FEATURE: Similar Ticket Warning
   ============================================================ */
.similar-warning {
    background: var(--yellow-light);
    border: 1px solid var(--yellow);
    border-left: 4px solid var(--yellow);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin: 10px 0;
    font-size: 13px;
}

.similar-warning-title {
    font-weight: 600;
    color: #856404;
    margin-bottom: 6px;
}

.similar-warning-item {
    padding: 4px 0;
}

.similar-warning-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.similar-warning-item a:hover {
    text-decoration: underline;
}

body.dark-mode .similar-warning {
    background: rgba(253, 203, 110, 0.1);
    border-color: rgba(253, 203, 110, 0.3);
}

body.dark-mode .similar-warning-title {
    color: var(--yellow);
}

/* ============================================================
   FEATURE: Smart Brand Suggestions (Recent Brands)
   ============================================================ */
.recent-brands {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 8px 0;
}

.recent-brand-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(26, 115, 232, 0.2);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.recent-brand-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

body.dark-mode .recent-brand-btn {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--border);
}

/* ============================================================
   FEATURE: Chat History Cards
   ============================================================ */
.chat-history-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 8px 0;
}

.chat-history-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition);
    max-width: 220px;
    min-width: 160px;
}

.chat-history-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.chat-history-card .history-brand {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.chat-history-card .history-concern {
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-history-card .history-date {
    color: var(--text-tertiary);
    font-size: 11px;
    margin-top: 4px;
}

body.dark-mode .chat-history-card {
    background: var(--surface);
    border-color: var(--border);
}

/* ============================================================
   FEATURE: Voice Input Button
   ============================================================ */
.mic-btn {
    width: 40px;
    height: 40px;
    min-width: 40px;
    padding: 0;
    background: transparent;
    color: var(--text-tertiary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mic-btn:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.mic-btn.recording {
    color: var(--red);
    background: var(--red-light);
    animation: micPulse 1.2s ease-in-out infinite;
}

@keyframes micPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(225, 112, 85, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(225, 112, 85, 0); }
}

/* ============================================================
   FEATURE: Notification Bell
   ============================================================ */
.notification-bell {
    position: relative;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #fff;
    transition: all var(--transition);
}

.notification-bell:hover {
    background: rgba(255, 255, 255, 0.25);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--red);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary-dark);
}

.notification-dropdown {
    position: absolute;
    top: 40px;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: 300px;
    max-height: 360px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.notification-dropdown.show {
    display: block;
}

.notification-dropdown-header {
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notification-item {
    padding: 10px 14px;
    font-size: 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    cursor: default;
}

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

.notification-item .notif-time {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.notification-empty {
    padding: 20px 14px;
    text-align: center;
    font-size: 13px;
    color: var(--text-tertiary);
}

body.dark-mode .notification-dropdown {
    background: var(--surface);
    border-color: var(--border);
}

/* ============================================================
   FEATURE: PWA Install Button
   ============================================================ */
.pwa-install-btn {
    display: none;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-family: inherit;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.pwa-install-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.pwa-install-btn svg {
    width: 14px;
    height: 14px;
}