/* Lấy màu */
:root {
    --cnx-navy: #0B3D91;
    --cnx-primary: #1565D8;
    --cnx-light: #3FA9F5;
    --cnx-ice: #8FD3FF;
    --cnx-selected: #EAF3FF;
    --cnx-text: #0F1F3D;
    --cnx-muted: #5B6B88;
    --cnx-border: #D5DDED;
    --cnx-input-bg: #F4F7FD;
}

body {
    font-family: "Be Vietnam Pro",sans-serif;
    color: var(--cnx-text);
    margin: 0
}

a {
    color: var(--cnx-primary);
    text-decoration: none
}

.text-muted-cnx {
    color: var(--cnx-muted)
}

/* Nút */
.btn-primary {
    --bs-btn-bg: var(--cnx-primary);
    --bs-btn-border-color: var(--cnx-primary);
    --bs-btn-hover-bg: var(--cnx-navy);
    --bs-btn-hover-border-color: var(--cnx-navy);
    --bs-btn-active-bg: var(--cnx-navy);
    --bs-btn-active-border-color: var(--cnx-navy);
    border-radius: 999px;
    font-weight: 600
}

.btn-gray {
    background: #F5F5F5;
    border: 1px solid #D5D5D5;
    color: var(--cnx-muted);
    border-radius: 999px;
    font-weight: 600
}

    .btn-gray:hover {
        background: #EBEBEB
    }

/* Ô nhập */
.input-group {
    border: 1.5px solid var(--cnx-border);
    border-radius: 20px;
    background: var(--cnx-input-bg);
    overflow: hidden;
    flex-wrap: nowrap
}

    .input-group:focus-within {
        border-color: var(--cnx-primary)
    }

    .input-group .form-control, .input-group .input-group-text, .input-group .btn {
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
        padding: 15px 14px;
        color: var(--cnx-muted)
    }

    .input-group .form-control {
        color: var(--cnx-text);
        font-size: 14px
    }

    .input-group .input-group-text, .input-group .btn {
        font-size: 18px
    }

    .input-group .form-control::placeholder {
        color: var(--cnx-muted)
    }
    .input-group .btn:hover {
        background: transparent;
        color: var(--cnx-primary)
    }

/* Các trang( đăng nhập, đăng ký, quên mật khẩu ) */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 10% 20%,rgba(130,190,240,.75),transparent 28%), radial-gradient(circle at 92% 98%,#7CC0FA,transparent 34%), radial-gradient(rgba(255,255,255,.28) 1px,transparent 1.6px) 0 0/24px 24px, linear-gradient(135deg,#0F4DB5,#1565D8 60%,#2E86E8)
}

.auth-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 580px;
    padding: 48px 96px;
    background: #fff;
    border-radius: 32px;
    box-shadow: 0 20px 50px rgba(0,0,0,.25)
}

    .auth-card.sm {
        max-width: 470px;
        padding: 30px 48px
    }

.auth-logo {
    width: 96px;
    height: 96px;
    margin: 0 auto 12px;
    border-radius: 24px;
    background: linear-gradient(135deg,var(--cnx-navy),var(--cnx-light));
    color: #fff;
    font-size: 46px;
    display: flex;
    align-items: center;
    justify-content: center
}

.auth-card h4 {
    font-size: 28px;
    font-weight: 700;
    color: #000
}

.auth-card .form-label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: #000
}

.back-link {
    display: inline-block;
    font-size: 13px;
    color: var(--cnx-muted);
    margin-bottom: 14px
}

.otp {
    display: flex;
    gap: 12px;
    margin: 16px 0 24px
}

    .otp input {
        width: 48px;
        height: 56px;
        text-align: center;
        font-size: 20px;
        border: 2px solid var(--cnx-border);
        border-radius: 12px;
        background: var(--cnx-input-bg);
        outline: 0
    }

        .otp input:focus {
            border-color: var(--cnx-primary)
        }

/* khung app */
.app-shell {
    display: flex;
    height: 100vh;
    background: #fff
}

.app-sidebar {
    width: 76px;
    height: 100%;
    background: var(--cnx-primary);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    flex-shrink: 0
}

.sidebar-top {
    display: flex;
    flex-direction: column;
    gap: 12px
}

.sidebar-link {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    color: #fff;
    font-size: 26px;
    display: flex;
    align-items: center;
    justify-content: center
}

    .sidebar-link:hover, .sidebar-link.active {
        background: var(--cnx-navy);
        color: #fff
    }

.sidebar-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #D9D9D9
}

.app-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0
}

.titlebar {
    height: 20px;
    background: #D9D9D9;
    font-size: 11px;
    font-weight: 600;
    line-height: 20px;
    padding: 0 8px;
    color: #000
}

.app-content {
    flex: 1;
    display: flex;
    min-height: 0
}

/* cột danh sách hội thoại */
.list-panel {
    width: 460px;
    border-right: 1px solid var(--cnx-border);
    display: flex;
    flex-direction: column;
    padding: 14px 16px;
    overflow: auto
}

.search {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    border: 2px solid var(--cnx-border);
    border-radius: 999px;
    background: var(--cnx-input-bg);
    padding: 7px 14px;
    color: var(--cnx-muted);
    margin: 0
}

    .search input {
        border: 0;
        background: transparent;
        outline: 0;
        width: 100%;
        font-size: 13px
    }

.icon-btn {
    border: 0;
    background: transparent;
    font-size: 22px;
    color: #333;
    padding: 0 4px
}

.tab-pill {
    border: 0;
    border-radius: 999px;
    padding: 6px 22px;
    background: var(--cnx-selected);
    color: var(--cnx-muted);
    font-size: 13px;
    font-weight: 500
}

    .tab-pill.active {
        background: var(--cnx-primary);
        color: #fff
    }

.empty-text {
    margin: auto;
    text-align: center;
    color: var(--cnx-muted);
    font-size: 20px;
    font-weight: 500
}

.conv {
    display: flex;
    gap: 12px;
    padding: 12px;
    border-radius: 14px;
    cursor: pointer;
    align-items: center
}

    .conv.active {
        background: var(--cnx-selected)
    }

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--cnx-primary);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative
}

    .avatar.dark {
        background: #1C3F94
    }

    .avatar .dot {
        position: absolute;
        right: 0;
        bottom: 0;
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background: #22A05A;
        border: 2px solid #fff
    }

.conv-info {
    flex: 1;
    min-width: 0
}

.conv-name {
    font-weight: 700;
    display: flex;
    justify-content: space-between
}

    .conv-name small {
        font-weight: 400;
        color: var(--cnx-muted)
    }

.conv-last {
    font-size: 13px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    gap: 8px
}

    .conv-last span:first-child {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis
    }

.badge-count {
    background: #2F5FD0;
    color: #fff;
    border-radius: 999px;
    font-size: 11px;
    min-width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center
}

/* cột chat bên phải */
.chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--cnx-selected);
    min-width: 0
}

.chat-head {
    height: 64px;
    background: #fff;
    border-bottom: 1px solid var(--cnx-border);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 12px;
    flex-shrink: 0
}

.mini-logo {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg,var(--cnx-navy),var(--cnx-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-head .avatar {
    width: 34px;
    height: 34px;
    font-size: 15px
}

.online-text {
    color: #22A05A;
    font-size: 12px
}

.chat-body {
    flex: 1;
    overflow: auto;
    padding: 14px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px
}

.day-chip {
    align-self: center;
    background: #fff;
    border-radius: 999px;
    padding: 4px 28px;
    font-size: 12px;
    color: var(--cnx-muted)
}

.msg {
    max-width: 60%;
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 13px
}

    .msg small {
        display: block;
        font-size: 10px;
        opacity: .7;
        margin-top: 2px
    }

.msg-in {
    background: #fff;
    align-self: flex-start;
    margin-left: 28px
}

.msg-out {
    background: var(--cnx-navy);
    color: #fff;
    align-self: flex-end
}

.chat-input {
    background: #fff;
    border-top: 1px solid var(--cnx-border);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px
}

.hidden {
    display: none !important
}
/* thẻ nhỏ gọn (trang đăng ký) */
.auth-card.compact {
    padding-top: 28px;
    padding-bottom: 28px
}

.auth-card.compact .auth-logo {
        width: 72px;
        height: 72px;
        font-size: 34px;
        border-radius: 18px
}
/* Trang trí cho nền trang bằng bong bóng(Bubbleee)*/
.bubble {
    position: absolute;
    background: url("../assets/bubble.svg") no-repeat;
    background-size: contain;
    aspect-ratio: 2 / 1
}

.b1 {
    left: 22%;
    top: 13%;
    width: 260px
}

.b2 {
    right: -6%;
    top: 16%;
    width: 300px
}

.b3 {
    left: 0;
    top: 51%;
    width: 340px
}

.b4 {
    right: 21%;
    top: 38%;
    width: 240px
}

/* Danh bạ */
.contacts-top {
    padding: 14px 16px;
    border-bottom: 1px solid var(--cnx-border)
}
    .contacts-top .search {
        flex: 0 1 480px
    }
.sort-box {
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--cnx-border);
    border-radius: 10px;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--cnx-text)
}
.contacts-body {
    flex: 1;
    background: var(--cnx-selected);
    padding: 16px 24px;
    overflow: auto;
    display: flex;
    flex-direction: column;
}
/*Thẻ bạn bè*/
.friend-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
.friend-card {
    background: #fff;
    border-radius: 16px;
    padding: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(11,61,145,.08);
}
    .friend-card .avatar {
        width: 64px;
        height: 64px;
        font-size: 26px;
        font-weight: 600;
    }

        .friend-card .avatar .dot {
            width: 16px;
            height: 16px;
            border-width: 3px;
        }

.friend-name {
    font-weight: 700;
    font-size: 15px;
}

.friend-status {
    font-size: 12px;
    color: var(--cnx-muted);
    margin-bottom: 4px;
}
.avatar.teal {
    background: #1F7AA0
}

.avatar.green {
    background: #22A05A
}

.friend-actions {
    display: flex;
    gap: 6px;
    width: 100%
}

    .friend-actions .btn {
        flex: 1;
        font-size: 12px;
        padding: 6px 4px;
        border-radius: 6px;
        white-space: nowrap
    }

    .friend-actions .btn-gray {
        background: #D9D9D9;
        border-color: #D9D9D9;
        color: #4A4A4A;
    }
/* Phân trang */
.contacts-footer {
    margin-top: auto;
    padding-top: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--cnx-muted);
}

    .contacts-footer .page-link {
        color: var(--cnx-primary);
        border-color: var(--cnx-border);
        font-size: 12px;
    }

    .contacts-footer .active .page-link {
        background: var(--cnx-primary);
        border-color: var(--cnx-primary);
        color: #fff
    }
/* Hộp sắp xếp */
.sort-wrap {
    position: relative
}

    .sort-wrap .sort-box {
        background: #fff;
        min-width: 170px;
        cursor: pointer
    }

        .sort-wrap .sort-box span {
            flex: 1;
            text-align: left
        }

        .sort-wrap .sort-box.open {
            border-color: var(--cnx-primary)
        }

.sort-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid var(--cnx-border);
    border-radius: 10px;
    box-shadow: 0 6px 16px rgba(11,61,145,.12);
    padding: 4px;
    z-index: 10
}

.sort-item {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    border: 0;
    background: transparent;
    padding: 6px 8px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--cnx-text)
}

    .sort-item:hover {
        background: var(--cnx-selected)
    }

    .sort-item i {
        visibility: hidden;
        color: var(--cnx-primary)
    }

    .sort-item.selected i {
        visibility: visible
    }
/* Hộp thoại */
.modal-overlay {
    position: fixed;
    top: 20px;
    left: 76px;
    right: 0;
    bottom: 0;
    background: rgba(15,31,61,.25);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100
}

.add-friend-box {
    background: #fff;
    border-radius: 16px;
    padding: 18px 20px;
    display: flex;
    gap: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,.15)
}

    .add-friend-box .form-control {
        width: 200px;
        font-size: 13px;
        border-color: var(--cnx-border)
    }

    .add-friend-box .btn {
        border-radius: 8px;
        font-size: 13px;
        padding: 6px 20px
    }
/* tạo nhóm */
.add-group-box {
    background: #fff;
    border-radius: 16px;
    width: 340px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0,0,0,.15);
    overflow: hidden
}

.group-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    padding: 16px 16px 12px
}

.add-group-box .form-control {
    font-size: 13px;
    border-color: var(--cnx-border);
    border-radius: 10px
}

.group-list {
    flex: 1;
    overflow: auto;
    min-height: 180px;
    margin-top: 12px;
    padding: 8px 16px;
    border-top: 1px solid var(--cnx-border);
    border-bottom: 1px solid var(--cnx-border)
}

.group-letter {
    font-weight: 700;
    font-size: 13px;
    margin: 6px 0 2px
}

.group-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 0;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer
}

    .group-item .avatar {
        width: 30px;
        height: 30px;
        font-size: 13px
    }

    .group-item .form-check-input {
        margin: 0
    }

        .group-item .form-check-input:checked {
            background-color: var(--cnx-primary);
            border-color: var(--cnx-primary)
        }

.group-foot {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 12px 16px
}

    .group-foot .btn {
        border-radius: 8px;
        font-size: 13px;
        padding: 6px 18px
    }

    .group-foot .btn-gray {
        background: #D9D9D9;
        border-color: #D9D9D9;
        color: #4A4A4A
    }
.badge-count {
    flex-shrink: 0;
    padding: 0 6px
}
/* Chaams dodr tin chuwa docj */
.sidebar-link {
    position: relative
}

.nav-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 999px;
    background: #E5484D;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    line-height: 16px;
    text-align: center
}
/* Tin nhắn */
.msg-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    align-self: flex-start;
    max-width: 60%
}

    .msg-row .msg-in {
        margin-left: 0;
        max-width: none
    }

.msg-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--cnx-primary);
    flex-shrink: 0
}

/* Ô nhập tin nhắn */
.chat-body {
    min-height: 0
}

.chat-box {
    flex: 1;
    border: 1px solid var(--cnx-border);
    border-radius: 999px;
    background: var(--cnx-input-bg);
    padding: 8px 16px;
    font-size: 13px;
    outline: 0
}

    .chat-box:focus {
        border-color: var(--cnx-primary)
    }

.chat-head .icon-btn {
    width: auto;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;

}
.load-status {
    align-self: center;
    font-size: 12px;
    color: var(--cnx-muted)
}
.msg-status {
    align-self: flex-end;
    display: flex;
    align-items: center;
    min-height: 20px;
    margin-top: -6px;
    font-size: 11px;
    color: var(--cnx-muted)
}
.msg-row:has(+ .msg-row) .msg-avatar {
    visibility: hidden
}
/* đã đọc thì mờ, chưa đọc thì đậm */
.conv-last {
    color: var(--cnx-muted);
    font-weight: 400
}

.conv.has-unread .conv-last {
    color: var(--cnx-text);
    font-weight: 600
}
/* Ảnh và file trong tin nhắn */
.msg-image {
    display: block;
    width: 220px;
    max-width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 8px
}

.msg-file {
    display: flex;
    align-items: center;
    gap: 8px;
    color: inherit;
    text-decoration: underline;
    word-break: break-all
}

    .msg-file i {
        font-size: 18px
    }
/* Xem ảnh phóng to */
.msg-image {
    cursor: pointer
}

.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200
}

    .image-viewer img {
        max-width: 90vw;
        max-height: 90vh;
        object-fit: contain
    }

.image-viewer-close {
    position: absolute;
    top: 16px;
    right: 20px;
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.15);
    color: #fff;
    font-size: 18px
}

    .image-viewer-close:hover {
        background: rgba(255,255,255,.3)
    }
/* Nút ... và menu của cuộc trò chuyện */
.conv-more {
    display: none;
    border: 0;
    background: transparent;
    color: var(--cnx-muted);
    padding: 0;
    line-height: 1;
    font-size: 16px
}

.conv:hover .conv-name small {
    display: none
}

.conv:hover .conv-more {
    display: block
}

.conv-menu {
    position: fixed;
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 14px rgba(0,0,0,.2);
    padding: 6px 0;
    z-index: 50
}

    .conv-menu button {
        border: 0;
        background: transparent;
        text-align: left;
        padding: 7px 16px;
        font-size: 13px;
        color: #666666;
        white-space: nowrap
    }

        .conv-menu button:hover {
            background: var(--cnx-selected)
        }

    .conv-menu .danger {
        color: #E5484D
    }
.conv-empty {
    margin: 40px 0;
    text-align: center;
    font-size: 14px;
    color: var(--cnx-muted)
}
/* Trang hồ sơ */
.profile-page {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 20px 24px 32px;
    color: #000
}

.profile-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 20px
}

.profile-info {
    display: grid;
    grid-template-columns: 240px minmax(0, 800px);
    gap: 40px;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid #EFEFEF
}

.profile-avatar {
    position: relative;
    width: 190px;
    height: 190px;
    margin: 0 auto;
    border-radius: 50%;
    background: #D9D9D9
}

    .profile-avatar > img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        object-fit: cover
    }

.avatar-upload {
    position: absolute;
    right: -8px;
    bottom: 0;
    border: 0;
    background: transparent;
    padding: 0;
    font-size: 22px;
    color: #444
}

.profile-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 64px
}

.profile-submit {
    grid-column: 2
}

.password-fields {
    display: grid;
    grid-template-columns: minmax(0, 300px) minmax(0, 300px);
    gap: 20px 64px;
    padding-left: 40px
}

.password-submit {
    grid-column: 1
}

.profile-page .form-label {
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px
}

.profile-page .form-control,
.profile-page .form-select {
    height: 44px;
    border: 1px solid #E5E5E5;
    border-radius: 4px;
    background-color: #FFFFFF;
    color: #444;
    font-size: 13px;
    box-shadow: none
}

.profile-page .input-group {
    height: 44px;
    border: 1px solid #E5E5E5;
    border-radius: 4px;
    background: #FFFFFF;
}

    .profile-page .input-group .form-control {
        height: 42px;
        border: 0;
        background: transparent;
        padding: 0 12px
    }

    .profile-page .input-group .btn {
        padding: 0 12px;
        font-size: 16px
    }

.profile-page .btn-primary {
    width: 100%;
    height: 40px;
    font-size: 13px
}
/* Menu bánh răng */
.sidebar-settings {
    position: relative
}

.settings-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: -14px;
    width: 189px;
    padding: 6px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,.3);
    z-index: 60
}

.settings-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    border: 0;
    border-radius: 6px;
    background: transparent;
    padding: 7px 8px;
    color: #666666;
    font-size: 15px;
    font-weight: 500;
    text-align: left
}

    .settings-item:hover {
        background: var(--cnx-selected);
        color: #666666
    }

    .settings-item.danger,
    .settings-item.danger:hover {
        color: #EE5A5A
    }