/* ═══════════════════════════════════════════════════════════════
   LANA DM SYSTEM — Premium WhatsApp-Style Chat CSS
   ═══════════════════════════════════════════════════════════════ */

/* ─── DM Overlay (fullscreen chat layer) ─────────────────────── */
.dm-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    background: var(--bg, #f5f7fa);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.35s ease, transform 0.35s ease;
    pointer-events: none;
}
.dm-overlay.show {
    opacity: 1;
    transform: none;
    pointer-events: all;
}

/* ─── DM Layout (2-panel: contacts + chat) ───────────────────── */
.dm-layout {
    display: flex;
    width: 100%;
    height: 100%;
}

/* ─── Contacts Panel ─────────────────────────────────────────── */
.dm-contacts-panel {
    width: 360px;
    min-width: 300px;
    background: var(--card-bg, #fff);
    border-left: 1px solid var(--border, #e5e7eb);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.dm-contacts-header {
    padding: 1rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border, #e5e7eb);
    background: var(--card-bg, #fff);
}
.dm-contacts-header h2 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary, #1a1a2e);
    margin: 0;
}
.dm-close-btn {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: background 0.2s;
    color: var(--text-primary, #333);
}
.dm-close-btn:hover {
    background: var(--hover-bg, rgba(0,0,0,0.06));
}

/* Search Box */
.dm-search-box {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--border, #e5e7eb);
}
.dm-search-input {
    width: 100%;
    padding: 0.55rem 1rem;
    border: 1.5px solid var(--border, #ddd);
    border-radius: 24px;
    background: var(--input-bg, #f8f9fa);
    color: var(--text-primary, #333);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}
.dm-search-input:focus {
    border-color: var(--lana-green, #3d8e59);
}

/* Tab buttons (Contacts vs Conversations) */
.dm-tabs {
    display: flex;
    border-bottom: 1px solid var(--border, #e5e7eb);
}
.dm-tab {
    flex: 1;
    padding: 0.65rem;
    text-align: center;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted, #888);
    cursor: pointer;
    border-bottom: 2.5px solid transparent;
    transition: all 0.2s;
}
.dm-tab.active {
    color: var(--lana-green, #3d8e59);
    border-bottom-color: var(--lana-green, #3d8e59);
}
.dm-tab:hover:not(.active) {
    color: var(--text-primary, #333);
    background: var(--hover-bg, rgba(0,0,0,0.03));
}

/* Contact List */
.dm-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.3rem 0;
}
.dm-list::-webkit-scrollbar { width: 4px; }
.dm-list::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 4px; }

.dm-contact-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.75rem 1.2rem;
    cursor: pointer;
    transition: background 0.15s;
    position: relative;
}
.dm-contact-item:hover {
    background: var(--hover-bg, rgba(0,0,0,0.04));
}
.dm-contact-item.active {
    background: var(--active-bg, rgba(61,142,89,0.08));
}
.dm-contact-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    color: #2e7d32;
}
.dm-contact-avatar.doctor {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    color: #1565c0;
}
.dm-contact-avatar.beneficiary {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    color: #e65100;
}
.dm-contact-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}
.dm-contact-info {
    flex: 1;
    min-width: 0;
}
.dm-contact-name {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--text-primary, #1a1a2e);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.dm-contact-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted, #888);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}
.dm-contact-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    flex-shrink: 0;
}
.dm-contact-time {
    font-size: 0.72rem;
    color: var(--text-muted, #999);
}
.dm-unread-badge {
    background: var(--lana-green, #3d8e59);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    min-width: 20px;
    height: 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
}

/* ─── Chat Panel ─────────────────────────────────────────────── */
.dm-chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg, #f0f2f5);
    position: relative;
}

/* Empty state */
.dm-empty-chat {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: var(--text-muted, #888);
    text-align: center;
    padding: 2rem;
}
.dm-empty-chat .dm-empty-icon {
    font-size: 4rem;
    opacity: 0.5;
}
.dm-empty-chat p {
    font-size: 1.1rem;
    max-width: 280px;
}

/* Chat Header */
.dm-chat-header {
    padding: 0.75rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--card-bg, #fff);
    border-bottom: 1px solid var(--border, #e5e7eb);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.dm-chat-back-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px;
    color: var(--text-primary, #333);
}
.dm-chat-header-info {
    flex: 1;
}
.dm-chat-header-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary, #1a1a2e);
}
.dm-chat-header-status {
    font-size: 0.78rem;
    color: var(--text-muted, #888);
}

/* Messages Container */
.dm-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.dm-messages::-webkit-scrollbar { width: 5px; }
.dm-messages::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); border-radius: 4px; }

/* Date Divider */
.dm-date-divider {
    text-align: center;
    margin: 0.8rem 0;
}
.dm-date-divider span {
    background: var(--card-bg, rgba(255,255,255,0.85));
    padding: 4px 14px;
    border-radius: 8px;
    font-size: 0.75rem;
    color: var(--text-muted, #888);
    font-weight: 600;
    backdrop-filter: blur(6px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* Message Bubble */
.dm-msg {
    display: flex;
    flex-direction: column;
    max-width: 75%;
    animation: dmFadeIn 0.25s ease;
}
@keyframes dmFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}
.dm-msg.mine {
    align-self: flex-end;
}
.dm-msg.theirs {
    align-self: flex-start;
}
.dm-bubble {
    padding: 0.55rem 0.9rem;
    border-radius: 18px;
    font-size: 0.92rem;
    line-height: 1.5;
    word-break: break-word;
    position: relative;
}
.dm-msg.mine .dm-bubble {
    background: linear-gradient(135deg, #3d8e59, #2d7a4a);
    color: #fff;
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}
.dm-msg.theirs .dm-bubble {
    background: var(--card-bg, #fff);
    color: var(--text-primary, #333);
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.dm-bubble-time {
    font-size: 0.65rem;
    margin-top: 2px;
    text-align: left;
    opacity: 0.7;
}
.dm-msg.mine .dm-bubble-time {
    color: rgba(255,255,255,0.7);
}
.dm-msg.theirs .dm-bubble-time {
    color: var(--text-muted, #999);
}

/* Read Ticks */
.dm-read-ticks {
    font-size: 0.75rem;
    margin-right: 4px;
}
.dm-read-ticks.read { color: #34b7f1; }
.dm-read-ticks.unread { opacity: 0.5; }

/* Media in Messages */
.dm-media-img {
    max-width: 260px;
    max-height: 260px;
    border-radius: 12px;
    cursor: pointer;
    object-fit: cover;
    margin-bottom: 4px;
    transition: transform 0.2s;
}
.dm-media-img:hover {
    transform: scale(1.02);
}
.dm-media-audio {
    width: 100%;
    max-width: 260px;
    margin-bottom: 4px;
    border-radius: 8px;
}

/* ─── Input Area ─────────────────────────────────────────────── */
.dm-input-area {
    padding: 0.6rem 1rem;
    background: var(--card-bg, #fff);
    border-top: 1px solid var(--border, #e5e7eb);
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
}
.dm-input-actions {
    display: flex;
    gap: 2px;
}
.dm-input-action-btn {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: background 0.2s;
    color: var(--text-muted, #888);
}
.dm-input-action-btn:hover {
    background: var(--hover-bg, rgba(0,0,0,0.06));
    color: var(--text-primary, #333);
}
.dm-text-input {
    flex: 1;
    min-height: 38px;
    max-height: 120px;
    padding: 0.5rem 0.9rem;
    border: 1.5px solid var(--border, #ddd);
    border-radius: 22px;
    background: var(--input-bg, #f8f9fa);
    color: var(--text-primary, #333);
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    outline: none;
    transition: border-color 0.2s;
    line-height: 1.4;
    overflow-y: auto;
}
.dm-text-input:focus {
    border-color: var(--lana-green, #3d8e59);
}
.dm-send-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #3d8e59, #2d7a4a);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.15s, box-shadow 0.2s;
    flex-shrink: 0;
}
.dm-send-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 12px rgba(61,142,89,0.35);
}
.dm-send-btn:active {
    transform: scale(0.95);
}

/* Voice Recording State */
.dm-recording-indicator {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0 0.8rem;
    color: #e53935;
    font-weight: 600;
    font-size: 0.9rem;
}
.dm-recording-dot {
    width: 10px;
    height: 10px;
    background: #e53935;
    border-radius: 50%;
    animation: dmPulseRec 1s infinite;
}
@keyframes dmPulseRec {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.3); }
}
.dm-recording-timer {
    font-variant-numeric: tabular-nums;
}
.dm-cancel-record-btn {
    background: none;
    border: none;
    color: var(--text-muted, #888);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px 8px;
}
.dm-cancel-record-btn:hover {
    color: #e53935;
}

/* ─── Image Lightbox ─────────────────────────────────────────── */
.dm-lightbox {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(0,0,0,0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    animation: dmFadeIn 0.2s ease;
}
.dm-lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 12px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}

/* ─── Nav Badge for DM ───────────────────────────────────────── */
.dm-nav-badge {
    background: #e53935;
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    position: absolute;
    top: -2px;
    left: -2px;
}

/* ─── Image Preview before send ──────────────────────────────── */
.dm-image-preview {
    padding: 0.5rem 1rem;
    background: var(--card-bg, #fff);
    border-top: 1px solid var(--border, #e5e7eb);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.dm-image-preview img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 10px;
    border: 2px solid var(--border, #ddd);
}
.dm-image-preview-remove {
    background: #e53935;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.8rem;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
    .dm-contacts-panel {
        width: 100%;
        min-width: 0;
    }
    .dm-chat-panel {
        position: absolute;
        inset: 0;
        z-index: 2;
        display: none;
    }
    .dm-chat-panel.mobile-show {
        display: flex;
    }
    .dm-chat-back-btn {
        display: block;
    }
    .dm-msg {
        max-width: 88%;
    }
}

/* ─── Dark Mode Overrides ────────────────────────────────────── */
[data-theme="dark"] .dm-overlay {
    background: var(--lana-bg);
}
[data-theme="dark"] .dm-chat-panel {
    background: var(--lana-bg);
}
[data-theme="dark"] .dm-contacts-panel,
[data-theme="dark"] .dm-contacts-header,
[data-theme="dark"] .dm-chat-header,
[data-theme="dark"] .dm-input-area,
[data-theme="dark"] .dm-image-preview {
    background: var(--card-bg);
    border-color: var(--border);
}
[data-theme="dark"] .dm-close-btn,
[data-theme="dark"] .dm-chat-back-btn,
[data-theme="dark"] .dm-input-action-btn {
    color: var(--text-primary);
}
[data-theme="dark"] .dm-close-btn:hover,
[data-theme="dark"] .dm-input-action-btn:hover,
[data-theme="dark"] .dm-contact-item:hover,
[data-theme="dark"] .dm-tab:hover:not(.active) {
    background: rgba(255, 255, 255, 0.08); color: var(--text-primary);
}
[data-theme="dark"] .dm-contact-item.active {
    background: rgba(255, 255, 255, 0.12);
}
[data-theme="dark"] .dm-contact-name,
[data-theme="dark"] .dm-chat-header-name,
[data-theme="dark"] .dm-contacts-header h2 {
    color: var(--text-primary);
}
[data-theme="dark"] .dm-contact-subtitle,
[data-theme="dark"] .dm-contact-time,
[data-theme="dark"] .dm-chat-header-status,
[data-theme="dark"] .dm-tab,
[data-theme="dark"] .dm-empty-chat,
[data-theme="dark"] .dm-msg.theirs .dm-bubble-time {
    color: var(--text-muted);
}
[data-theme="dark"] .dm-search-input,
[data-theme="dark"] .dm-text-input {
    background: var(--input-bg);
    color: var(--text-body);
    border-color: var(--border);
}
[data-theme="dark"] .dm-msg.theirs .dm-bubble {
    background: var(--input-bg);
    color: var(--text-body);
    box-shadow: none;
}
[data-theme="dark"] .dm-date-divider span {
    background: var(--card-bg);
    color: var(--text-primary);
}