/* ═══════════════════════════════════════════════
   🎧 ENHANCED SUPPORT SYSTEM — Feature 15.4
   Theme: Indigo/Purple (#6366f1, #818cf8)
   ═══════════════════════════════════════════════ */

/* Page Header */
.sup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0 16px;
    flex-wrap: wrap;
    gap: 12px;
}
.sup-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary, #f1f5f9);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sup-title svg { width: 28px; height: 28px; stroke: #6366f1; }

/* ═══════ TABS ═══════ */
.sup-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-elevated, #1e293b);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 20px;
    overflow-x: auto;
}
.sup-tab {
    flex: 1;
    min-width: 0;
    padding: 10px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary, #94a3b8);
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    white-space: nowrap;
    transition: all .2s;
}
.sup-tab.active {
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: #fff;
    box-shadow: 0 2px 8px rgba(99,102,241,.3);
}
.sup-tab:not(.active):hover { color: #818cf8; }

/* ═══════ PANELS ═══════ */
.sup-panel { display: none; }
.sup-panel.active { display: block; }

/* ═══════ CHATBOT ═══════ */
.sup-chat-container {
    background: var(--bg-elevated, #1e293b);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color, #334155);
    display: flex;
    flex-direction: column;
    height: 480px;
}
.sup-chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #fff;
}
.sup-chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.sup-chat-bot-info { flex: 1; }
.sup-chat-bot-name { font-weight: 700; font-size: 15px; }
.sup-chat-bot-status { font-size: 12px; opacity: .8; display: flex; align-items: center; gap: 4px; }
.sup-chat-bot-status::before {
    content: '';
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #22c55e;
    display: inline-block;
}
.sup-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}
.sup-msg {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
    animation: supMsgIn .3s ease;
}
@keyframes supMsgIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.sup-msg.bot {
    align-self: flex-start;
    background: var(--bg-surface, #0f172a);
    color: var(--text-primary, #f1f5f9);
    border-bottom-left-radius: 4px;
}
.sup-msg.user {
    align-self: flex-end;
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.sup-msg-time {
    font-size: 11px;
    opacity: .5;
    margin-top: 4px;
}
.sup-quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}
.sup-quick-btn {
    padding: 6px 12px;
    border-radius: 16px;
    border: 1px solid #6366f1;
    background: rgba(99,102,241,.1);
    color: #818cf8;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s;
}
.sup-quick-btn:hover {
    background: #6366f1;
    color: #fff;
}
.sup-chat-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color, #334155);
    background: var(--bg-elevated, #1e293b);
}
.sup-chat-input {
    flex: 1;
    background: var(--bg-surface, #0f172a);
    border: 1px solid var(--border-color, #334155);
    border-radius: 24px;
    padding: 10px 16px;
    color: var(--text-primary, #f1f5f9);
    font-size: 14px;
    outline: none;
    transition: border-color .2s;
}
.sup-chat-input:focus {
    border-color: #6366f1;
}
.sup-chat-input::placeholder { color: var(--text-secondary, #64748b); }
.sup-chat-send {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform .15s;
    flex-shrink: 0;
}
.sup-chat-send:hover { transform: scale(1.08); }
.sup-chat-send svg { width: 18px; height: 18px; }

.sup-live-chat-cta {
    margin-top: 16px;
    padding: 16px;
    background: var(--bg-elevated, #1e293b);
    border-radius: 12px;
    border: 1px solid var(--border-color, #334155);
    text-align: center;
}
.sup-live-chat-cta p {
    color: var(--text-secondary, #94a3b8);
    font-size: 13px;
    margin-bottom: 10px;
}
.sup-live-btn {
    padding: 10px 24px;
    border-radius: 8px;
    border: none;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all .2s;
}
.sup-live-btn:hover { box-shadow: 0 4px 12px rgba(34,197,94,.3); }

/* ═══════ TICKET FORM ═══════ */
.sup-form-card {
    background: var(--bg-elevated, #1e293b);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color, #334155);
}
.sup-form-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary, #f1f5f9);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sup-form-group {
    margin-bottom: 16px;
}
.sup-form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary, #94a3b8);
    margin-bottom: 6px;
}
.sup-form-input,
.sup-form-select,
.sup-form-textarea {
    width: 100%;
    background: var(--bg-surface, #0f172a);
    border: 1px solid var(--border-color, #334155);
    border-radius: 8px;
    padding: 10px 14px;
    color: var(--text-primary, #f1f5f9);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color .2s;
    box-sizing: border-box;
}
.sup-form-input:focus,
.sup-form-select:focus,
.sup-form-textarea:focus {
    border-color: #6366f1;
}
.sup-form-textarea {
    min-height: 120px;
    resize: vertical;
}
.sup-form-select {
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}
.sup-form-submit {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: none;
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s;
    margin-top: 8px;
}
.sup-form-submit:hover { box-shadow: 0 4px 16px rgba(99,102,241,.4); }
.sup-form-submit:disabled {
    opacity: .5;
    cursor: not-allowed;
}

/* ═══════ TICKET LIST ═══════ */
.sup-ticket-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.sup-filter-btn {
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid var(--border-color, #334155);
    background: transparent;
    color: var(--text-secondary, #94a3b8);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all .2s;
}
.sup-filter-btn.active {
    background: #6366f1;
    color: #fff;
    border-color: #6366f1;
}
.sup-filter-btn:not(.active):hover {
    border-color: #818cf8;
    color: #818cf8;
}
.sup-ticket-card {
    background: var(--bg-elevated, #1e293b);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color, #334155);
    margin-bottom: 10px;
    cursor: pointer;
    transition: all .2s;
}
.sup-ticket-card:hover {
    border-color: #6366f1;
    transform: translateY(-1px);
}
.sup-ticket-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}
.sup-ticket-subject {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary, #f1f5f9);
    flex: 1;
}
.sup-ticket-badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
}
.sup-ticket-badge.open { background: rgba(34,197,94,.15); color: #22c55e; }
.sup-ticket-badge.in-progress { background: rgba(245,158,11,.15); color: #f59e0b; }
.sup-ticket-badge.resolved { background: rgba(99,102,241,.15); color: #818cf8; }
.sup-ticket-badge.closed { background: rgba(100,116,139,.15); color: #94a3b8; }
.sup-ticket-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-secondary, #64748b);
}
.sup-ticket-category {
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(99,102,241,.1);
    color: #818cf8;
    font-size: 11px;
    font-weight: 600;
}
.sup-ticket-preview {
    font-size: 13px;
    color: var(--text-secondary, #94a3b8);
    margin-top: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ═══════ TICKET DETAIL MODAL ═══════ */
.sup-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 9998;
    animation: supFadeIn .2s ease;
}
.sup-modal-overlay.active { display: flex; align-items: flex-end; justify-content: center; }
@keyframes supFadeIn { from { opacity: 0; } to { opacity: 1; } }
.sup-modal {
    background: var(--bg-modal, #27272a);
    border-radius: 20px 20px 0 0;
    width: 100%;
    max-width: 600px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    animation: supSlideUp .3s ease;
}
@keyframes supSlideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
.sup-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color, #334155);
}
.sup-modal-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary, #f1f5f9);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.sup-modal-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: var(--bg-surface, #0f172a);
    color: var(--text-secondary, #94a3b8);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.sup-modal-close:hover { color: #ef4444; }
.sup-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px 20px;
}
.sup-modal-messages {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.sup-tmsg {
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
}
.sup-tmsg.user-msg {
    background: rgba(99,102,241,.1);
    border: 1px solid rgba(99,102,241,.2);
    color: var(--text-primary, #f1f5f9);
}
.sup-tmsg.admin-msg {
    background: rgba(34,197,94,.1);
    border: 1px solid rgba(34,197,94,.2);
    color: var(--text-primary, #f1f5f9);
}
.sup-tmsg-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 12px;
}
.sup-tmsg-author {
    font-weight: 600;
    color: var(--text-primary, #f1f5f9);
}
.sup-tmsg-time {
    color: var(--text-secondary, #64748b);
    font-size: 11px;
}
.sup-modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color, #334155);
    display: flex;
    gap: 8px;
}
.sup-reply-input {
    flex: 1;
    background: var(--bg-surface, #0f172a);
    border: 1px solid var(--border-color, #334155);
    border-radius: 8px;
    padding: 10px 14px;
    color: var(--text-primary, #f1f5f9);
    font-size: 14px;
    outline: none;
    font-family: inherit;
}
.sup-reply-input:focus { border-color: #6366f1; }
.sup-reply-btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    background: #6366f1;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}
.sup-reply-btn:hover { background: #4f46e5; }
.sup-resolved-bar {
    background: rgba(34,197,94,.1);
    border: 1px solid rgba(34,197,94,.2);
    border-radius: 8px;
    padding: 10px 16px;
    text-align: center;
    color: #22c55e;
    font-weight: 600;
    font-size: 14px;
}

/* ═══════ KNOWLEDGE BASE ═══════ */
.sup-search-box {
    position: relative;
    margin-bottom: 20px;
}
.sup-search-input {
    width: 100%;
    background: var(--bg-elevated, #1e293b);
    border: 1px solid var(--border-color, #334155);
    border-radius: 12px;
    padding: 12px 16px 12px 44px;
    color: var(--text-primary, #f1f5f9);
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
    transition: border-color .2s;
}
.sup-search-input:focus { border-color: #6366f1; }
.sup-search-input::placeholder { color: var(--text-secondary, #64748b); }
.sup-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-secondary, #64748b);
}
.sup-kb-categories {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.sup-kb-cat {
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid var(--border-color, #334155);
    background: transparent;
    color: var(--text-secondary, #94a3b8);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all .2s;
}
.sup-kb-cat.active {
    background: #6366f1;
    color: #fff;
    border-color: #6366f1;
}
.sup-kb-cat:not(.active):hover { border-color: #818cf8; color: #818cf8; }
.sup-kb-article {
    background: var(--bg-elevated, #1e293b);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color, #334155);
    margin-bottom: 10px;
    cursor: pointer;
    transition: all .2s;
}
.sup-kb-article:hover {
    border-color: #6366f1;
}
.sup-kb-article-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary, #f1f5f9);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sup-kb-article-title svg {
    width: 18px;
    height: 18px;
    color: #6366f1;
    flex-shrink: 0;
}
.sup-kb-article-preview {
    font-size: 13px;
    color: var(--text-secondary, #94a3b8);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.sup-kb-article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    font-size: 11px;
    color: var(--text-secondary, #64748b);
}
.sup-kb-tag {
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(99,102,241,.1);
    color: #818cf8;
    font-size: 10px;
    font-weight: 600;
}

/* Article expanded view */
.sup-kb-expanded {
    background: var(--bg-elevated, #1e293b);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color, #334155);
    margin-bottom: 10px;
}
.sup-kb-expanded-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary, #f1f5f9);
    margin-bottom: 12px;
}
.sup-kb-expanded-body {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary, #cbd5e1);
}
.sup-kb-expanded-body p { margin-bottom: 12px; }
.sup-kb-expanded-body strong { color: var(--text-primary, #f1f5f9); }
.sup-kb-expanded-body ul { padding-left: 20px; margin-bottom: 12px; }
.sup-kb-expanded-body li { margin-bottom: 6px; }
.sup-kb-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color, #334155);
    background: transparent;
    color: #818cf8;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 16px;
}
.sup-kb-back-btn:hover { background: rgba(99,102,241,.1); }
.sup-kb-helpful {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color, #334155);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-secondary, #94a3b8);
}
.sup-helpful-btn {
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color, #334155);
    background: transparent;
    color: var(--text-secondary, #94a3b8);
    font-size: 13px;
    cursor: pointer;
    transition: all .2s;
}
.sup-helpful-btn:hover { border-color: #6366f1; color: #818cf8; }
.sup-helpful-btn.selected { background: rgba(99,102,241,.15); color: #818cf8; border-color: #6366f1; }

/* ═══════ EMPTY STATE ═══════ */
.sup-empty {
    text-align: center;
    padding: 40px 16px;
    color: var(--text-secondary, #94a3b8);
    font-size: 14px;
}
.sup-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

/* ═══════ UTILITIES ═══════ */
.sup-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 32px;
    color: var(--text-secondary, #94a3b8);
    font-size: 14px;
}
.sup-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color, #334155);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: supSpin .8s linear infinite;
}
@keyframes supSpin { to { transform: rotate(360deg); } }

.sup-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary, #f1f5f9);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ═══════ RESPONSIVE ═══════ */
@media (max-width: 600px) {
    .sup-tab { font-size: 12px; padding: 8px 6px; }
    .sup-chat-container { height: 420px; }
    .sup-modal { max-height: 90vh; }
    .sup-form-card { padding: 16px; }
    .sup-kb-expanded { padding: 16px; }
}