/* ========= DARK THEME (default) ========= */
:root, [data-theme="dark"] {
    --sidebar-width: 280px;
    --sidebar-bg: #17212b;
    --sidebar-hover: #202b36;
    --sidebar-active: #2b5278;
    --chat-bg: #0e1621;
    --header-bg: #17212b;
    --input-bg: #17212b;
    --msg-bg: #182533;
    --msg-own-bg: #2b5278;
    --accent: #5eafdf;
    --accent-light: #6ab7e2;
    --accent-dark: #3a7eba;
    --danger: #e74c3c;
    --text-primary: #f5f5f5;
    --text-secondary: #6d7f8e;
    --border-color: rgba(255,255,255,.06);
    --input-field-bg: #0e1621;
    --input-field-border: rgba(255,255,255,.12);
    --dropdown-bg: #17212b;
    --badge-bg: #e74c3c;
    --toast-bg: #17212b;
    --modal-bg: #0e1621;
    --code-bg: rgba(0,0,0,.35);
    --reply-bg: rgba(94,175,223,.1);
    --hover-bg: rgba(255,255,255,.02);
    --scrollbar-thumb: rgba(255,255,255,.12);
    --bs-body-bg: #0e1621;
    --bs-body-color: #f5f5f5;
}

/* ========= LIGHT THEME ========= */
[data-theme="light"] {
    --sidebar-bg: #ffffff;
    --sidebar-hover: #f0f2f5;
    --sidebar-active: #3390ec;
    --chat-bg: #e6ebee;
    --header-bg: #ffffff;
    --input-bg: #ffffff;
    --msg-bg: #ffffff;
    --msg-own-bg: #effdde;
    --accent: #3390ec;
    --accent-light: #3390ec;
    --accent-dark: #2b7cd3;
    --danger: #e74c3c;
    --text-primary: #000000;
    --text-secondary: #708499;
    --border-color: rgba(0,0,0,.08);
    --input-field-bg: #f0f2f5;
    --input-field-border: rgba(0,0,0,.1);
    --dropdown-bg: #ffffff;
    --badge-bg: #e74c3c;
    --toast-bg: #ffffff;
    --modal-bg: #ffffff;
    --code-bg: rgba(0,0,0,.06);
    --reply-bg: rgba(51,144,236,.08);
    --hover-bg: rgba(0,0,0,.03);
    --scrollbar-thumb: rgba(0,0,0,.15);
    --bs-body-bg: #e6ebee;
    --bs-body-color: #000000;
}

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

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: var(--chat-bg);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    font-size: 14px;
}

/* ========= LAYOUT ========= */
#app-wrapper {
    display: flex;
    height: 100%;
    height: 100dvh;
    overflow: hidden;
}

/* ========= SIDEBAR ========= */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    height: 100%;
    border-right: 1px solid var(--border-color);
}

.sidebar-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sidebar-header h5 {
    font-size: 1rem;
    color: var(--text-primary);
}

.sidebar-stats {
    display: flex;
    gap: 12px;
    margin-top: 6px;
    font-size: .72rem;
    color: var(--text-secondary);
}

.sidebar-stats i {
    margin-right: 2px;
}

.online-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: #2ecc71;
    border-radius: 50%;
    margin: 0 1px;
    vertical-align: middle;
}

.sidebar-channels {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.sidebar-section-title {
    font-size: .65rem;
    letter-spacing: .5px;
    color: var(--text-secondary);
    padding: 8px 8px 4px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background .15s;
    margin-bottom: 1px;
    font-size: .9rem;
}

.sidebar-item:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

.sidebar-item.active {
    background: var(--sidebar-active);
    color: #fff;
}

.sidebar-footer {
    flex-shrink: 0;
    padding: 10px 12px;
    border-top: 1px solid var(--border-color);
}

.channel-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    object-fit: cover;
}

/* ========= MAIN CHAT AREA ========= */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: 0;
    overflow: hidden;
    position: relative;
}

.chat-header {
    flex-shrink: 0;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    min-height: 50px;
    z-index: 10;
}

.chat-header h6 {
    margin: 0;
    font-size: .95rem;
}

.typing-indicator {
    flex-shrink: 0;
    font-size: .75rem;
    color: var(--accent);
    height: 20px;
    line-height: 20px;
    padding: 0 16px;
    background: var(--chat-bg);
}

/* Message feed */
.messages-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px 12px;
    -webkit-overflow-scrolling: touch;
}

/* Reply bar */
.reply-bar {
    flex-shrink: 0;
    background: var(--reply-bg);
    border-left: 3px solid var(--accent);
    padding: 6px 12px;
    display: none;
    align-items: center;
    justify-content: space-between;
}

.reply-bar.active {
    display: flex;
}

/* Upload preview */
.upload-preview-bar {
    flex-shrink: 0;
    display: flex;
    gap: 6px;
    padding: 6px 12px;
    flex-wrap: wrap;
    background: var(--input-bg);
}

.upload-preview-item {
    background: var(--hover-bg);
    border-radius: 6px;
    padding: 4px 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .8rem;
}

.upload-preview-item .remove-upload {
    cursor: pointer;
    color: var(--danger);
}

/* ========= INPUT BAR (Telegram-style) ========= */
.chat-input-area {
    flex-shrink: 0;
    background: var(--input-bg);
    border-top: 1px solid var(--border-color);
    padding: 8px 12px;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
}

.chat-input-row {
    display: flex;
    align-items: flex-end;
    gap: 6px;
}

.chat-input-row textarea {
    flex: 1;
    background: var(--input-field-bg);
    border: 1px solid var(--input-field-border);
    border-radius: 20px;
    color: var(--text-primary);
    padding: 8px 14px;
    resize: none;
    max-height: 120px;
    line-height: 1.4;
    font-size: 15px;
    outline: none;
    transition: border-color .15s;
}

.chat-input-row textarea:focus {
    border-color: var(--accent);
}

.chat-input-row textarea::placeholder {
    color: var(--text-secondary);
}

.input-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    cursor: pointer;
    transition: background .15s;
    font-size: 1.1rem;
    background: transparent;
    color: var(--text-secondary);
}

.input-btn:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}

.input-btn.send-btn {
    background: var(--accent);
    color: #fff;
}

.input-btn.send-btn:hover {
    background: var(--accent-dark);
}

/* ========= MESSAGES (Telegram-style column) ========= */
.message-item {
    display: flex;
    gap: 10px;
    padding: 2px 12px;
    margin-bottom: 6px;
    align-items: flex-start;
}

.msg-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    cursor: pointer;
    margin-top: 2px;
}

.message-bubble {
    background: var(--msg-bg);
    border-radius: 4px 12px 12px 12px;
    padding: 8px 12px;
    min-width: 0;
    max-width: 720px;
}

.msg-header {
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 2px;
}

.message-nick {
    font-weight: 600;
    font-size: .82rem;
    cursor: pointer;
}

.message-nick:hover {
    text-decoration: underline;
}

.role-admin { color: #e74c3c; }
.role-moderator { color: #f39c12; }
.role-user { color: var(--accent); }

.message-time {
    font-size: .68rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.message-edited {
    font-size: .68rem;
    color: var(--text-secondary);
    font-style: italic;
}

.message-text {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.45;
    font-size: .92rem;
}

.message-text a {
    color: var(--accent-light);
}

.message-text code {
    background: var(--code-bg);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: .85em;
}

.message-reply-quote {
    border-left: 2px solid var(--accent);
    padding: 3px 10px;
    margin-bottom: 4px;
    background: var(--reply-bg);
    border-radius: 0 6px 6px 0;
    font-size: .82rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.message-deleted .message-bubble {
    opacity: .55;
}

.message-deleted .message-text {
    color: var(--text-secondary);
    font-style: italic;
}

/* Inline action links */
.msg-actions-row {
    display: flex;
    gap: 12px;
    margin-top: 4px;
    flex-wrap: wrap;
}

.msg-actions-row a {
    font-size: .75rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color .15s;
    white-space: nowrap;
}

.msg-actions-row a:hover {
    color: var(--accent);
}

.msg-actions-row a.msg-action-danger:hover {
    color: var(--danger);
}

/* ========= AVATARS ========= */
.avatar-sm {
    width: 36px;
    height: 36px;
    object-fit: cover;
    border-radius: 50%;
    flex-shrink: 0;
}

.avatar-md {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 50%;
}

.avatar-lg {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
}

.avatar-grid img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: 50%;
    transition: border-color .15s;
}

.avatar-grid img:hover,
.avatar-grid img.selected {
    border-color: var(--accent);
}

/* ========= ATTACHMENTS ========= */
.attachment-preview {
    max-width: 300px;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 6px;
    cursor: pointer;
}

.attachment-preview img,
.attachment-preview video {
    max-width: 100%;
    max-height: 250px;
    object-fit: contain;
    border-radius: 10px;
    display: block;
}

.attachment-file {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px 12px;
    margin-top: 6px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: background .15s;
}

.attachment-file:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

.attachment-file i {
    font-size: 1.4rem;
    color: var(--accent);
}

/* ========= DM ========= */
.dm-item {
    display: flex;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    transition: background .15s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.dm-item:hover {
    background: var(--hover-bg);
}

.dm-read-status { font-size: .7rem; }

/* ========= AUTH FORMS ========= */
.auth-wrapper {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--chat-bg);
    padding: 16px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--sidebar-bg);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border-color);
}

/* ========= ADMIN ========= */
.admin-wrapper {
    min-height: 100vh;
    background: var(--chat-bg);
}

.admin-sidebar {
    width: 240px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
}

.admin-sidebar .nav-link {
    color: var(--text-secondary);
    border-radius: 6px;
    margin: 2px 8px;
}

.admin-sidebar .nav-link:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

.admin-sidebar .nav-link.active {
    background: var(--accent);
    color: #fff;
}

.stat-card {
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.25rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

/* ========= EMOJI PICKER ========= */
emoji-picker {
    --background: var(--sidebar-bg);
    --border-color: var(--input-field-border);
    --input-border-color: var(--input-field-border);
    --text-color: var(--text-primary);
    --category-font-color: var(--text-secondary);
    height: 300px;
}

#emoji-picker-container {
    position: absolute;
    bottom: 70px;
    right: 16px;
    z-index: 100;
}

/* ========= SCROLLBAR ========= */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { opacity: .8; }

/* ========= SIDEBAR TOGGLE (mobile only) ========= */
.sidebar-toggle {
    display: none;
}

.sidebar-overlay {
    display: none;
}

/* ========= MOBILE ========= */
@media (max-width: 768px) {
    #app-wrapper {
        height: 100dvh;
        height: 100vh;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        z-index: 1050;
        transition: left .25s ease;
        height: 100%;
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-overlay.active {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,.55);
        z-index: 1040;
    }

    .sidebar-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        position: absolute;
        top: 7px;
        left: 8px;
        z-index: 20;
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: transparent;
        border: none;
        color: var(--text-primary);
        font-size: 1.2rem;
        cursor: pointer;
    }

    .sidebar-toggle:active {
        background: var(--hover-bg);
    }

    main {
        position: fixed;
        inset: 0;
        display: flex;
        flex-direction: column;
    }

    .chat-header {
        padding-left: 50px !important;
        flex-shrink: 0;
    }

    .messages-container {
        flex: 1;
        min-height: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 8px;
    }

    .chat-input-area {
        flex-shrink: 0;
        padding: 6px 8px;
        padding-bottom: max(6px, env(safe-area-inset-bottom));
    }

    .chat-input-row textarea {
        font-size: 16px;
        padding: 9px 14px;
        border-radius: 22px;
    }

    .typing-indicator { flex-shrink: 0; }
    .reply-bar { flex-shrink: 0; }
    .upload-preview-bar { flex-shrink: 0; }

    #emoji-picker-container {
        bottom: 56px !important;
        right: 6px !important;
        left: 6px !important;
    }

    emoji-picker { width: 100%; }

    .attachment-preview { max-width: 240px; }

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

    .msg-actions-row {
        gap: 10px;
    }
}

/* ========= THEME-ADAPTIVE UTILITIES ========= */
.theme-card {
    background: var(--sidebar-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.theme-modal {
    background: var(--header-bg) !important;
    color: var(--text-primary) !important;
}

/* ========= THEME TOGGLE ========= */
.theme-toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    font-size: 1.15rem;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color .2s, background .2s;
    flex-shrink: 0;
}

.theme-toggle-btn:hover {
    color: var(--accent);
    background: var(--hover-bg);
}

/* ========= LIGHT THEME OVERRIDES ========= */
[data-theme="light"] body,
[data-theme="light"] html {
    background: var(--chat-bg);
    color: var(--text-primary);
}

[data-theme="light"] .dropdown-menu {
    background: var(--dropdown-bg) !important;
    border-color: var(--border-color) !important;
}

[data-theme="light"] .dropdown-menu .dropdown-item {
    color: var(--text-primary) !important;
}

[data-theme="light"] .dropdown-menu .dropdown-item:hover {
    background: var(--sidebar-hover) !important;
}

[data-theme="light"] .dropdown-menu .dropdown-item.text-danger {
    color: var(--danger) !important;
}

[data-theme="light"] .dropdown-divider {
    border-color: var(--border-color) !important;
}

[data-theme="light"] .text-secondary {
    color: var(--text-secondary) !important;
}

[data-theme="light"] .modal-content {
    background: var(--modal-bg) !important;
    color: var(--text-primary) !important;
}

[data-theme="light"] .toast {
    background: var(--toast-bg) !important;
}

[data-theme="light"] .form-control,
[data-theme="light"] .form-select {
    background: var(--input-field-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--input-field-border) !important;
}

[data-theme="light"] .form-control:focus,
[data-theme="light"] .form-select:focus {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 .2rem rgba(51,144,236,.15) !important;
}

[data-theme="light"] .btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--input-field-border);
}

[data-theme="light"] .btn-outline-secondary:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

[data-theme="light"] .table {
    color: var(--text-primary);
}

[data-theme="light"] .table > :not(caption) > * > * {
    background-color: transparent;
    color: var(--text-primary);
    border-bottom-color: var(--border-color);
}

[data-theme="light"] .card,
[data-theme="light"] .stat-card {
    background: var(--sidebar-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="light"] .auth-card {
    box-shadow: 0 2px 12px rgba(0,0,0,.08);
}

[data-theme="light"] .sidebar-item.active {
    color: #fff;
}

[data-theme="light"] .btn-close,
[data-theme="light"] .btn-close-white {
    filter: none;
}

[data-theme="light"] .dropdown-menu-dark {
    background: var(--dropdown-bg) !important;
    color: var(--text-primary) !important;
}

[data-theme="light"] .dropdown-menu-dark .dropdown-item {
    color: var(--text-primary) !important;
}

[data-theme="light"] .dropdown-menu-dark .dropdown-item:hover {
    background: var(--sidebar-hover) !important;
}

[data-theme="light"] .border-secondary {
    border-color: var(--border-color) !important;
}

[data-theme="light"] .sidebar-overlay.active {
    background: rgba(0,0,0,.3);
}

/* ========= UNREAD BADGE PULSE ========= */
.unread-badge:not(.d-none) {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}