/* NXS Edu Assistant. Ten lop cu duoc giu de tuong thich giao dien hien co. */

.avec-assistant {
    --assistant-red: #0A2F68;
    --assistant-red-dark: #061F48;
    --assistant-orange: #FF6B24;
    --assistant-teal: #18C6C8;
    --assistant-ink: #102A43;
    position: fixed;
    right: max(22px, env(safe-area-inset-right));
    bottom: max(22px, env(safe-area-inset-bottom));
    z-index: 2147483000;
    width: 116px;
    height: 105px;
    user-select: none;
    -webkit-user-select: none;
}

.avec-assistant::before {
    display: none;
}

.avec-assistant.is-dragging { cursor: grabbing; }

.avec-assistant__trigger {
    position: relative;
    z-index: 20;
    width: 116px;
    height: 105px;
    padding: 0;
    overflow: visible;
    border: 0;
    border-radius: 46%;
    background: transparent;
    cursor: grab;
    transition: transform .22s ease;
    touch-action: none;
}

.avec-assistant__trigger:hover,
.avec-assistant__trigger:focus-visible {
    transform: scale(1.025);
}

.avec-assistant__trigger:focus-visible {
    outline: 0;
}

.avec-assistant__trigger:focus-visible .avec-assistant__head {
    filter:
        saturate(1.1)
        contrast(1.05)
        drop-shadow(0 0 3px rgba(255, 255, 255, .95))
        drop-shadow(0 7px 8px rgba(73, 7, 20, .48));
}

.avec-assistant.is-dragging .avec-assistant__trigger {
    cursor: grabbing;
}

.avec-assistant__stage {
    --assistant-rotate-x: 0deg;
    --assistant-rotate-y: 0deg;
    position: absolute;
    inset: 0;
    display: block;
    transform: perspective(500px) rotateX(var(--assistant-rotate-x)) rotateY(var(--assistant-rotate-y));
    transform-style: preserve-3d;
    transition: transform .16s ease-out;
}

.avec-assistant__head {
    position: absolute;
    z-index: 5;
    left: 0;
    top: 0;
    display: block;
    width: 116px;
    height: 93px;
    object-fit: contain;
    border-radius: 24px;
    filter: saturate(1.05) contrast(1.03) drop-shadow(0 8px 10px rgba(6, 31, 72, .32));
    transform-origin: 50% 78%;
    animation: avecAssistantHeadFloat 3.6s ease-in-out infinite;
    pointer-events: none;
}

.avec-assistant.is-greeting .avec-assistant__head { animation: avecAssistantHeadHello 1.05s ease-in-out; }

.avec-assistant.is-excited .avec-assistant__stage { animation: avecAssistantExcited .62s cubic-bezier(.25, .9, .35, 1.25); }
.avec-assistant.is-dragging .avec-assistant__stage { transform: perspective(500px) rotate(-4deg) scale(1.06); }

.avec-assistant__online {
    position: absolute;
    z-index: 7;
    right: 2px;
    top: auto;
    bottom: 1px;
    width: 15px;
    height: 15px;
    border: 3px solid #fff;
    border-radius: 50%;
    background: #20a464;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .18);
    animation: avecAssistantOnline 2s ease-in-out infinite;
}

.avec-assistant__hint {
    position: absolute;
    z-index: 25;
    right: calc(100% + 12px);
    top: 41px;
    width: max-content;
    max-width: 230px;
    padding: 9px 13px;
    border-radius: 12px 12px 4px 12px;
    background: var(--assistant-red-dark);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.35;
    box-shadow: 0 8px 24px rgba(16, 12, 8, .2);
    pointer-events: none;
    opacity: 0;
    transform: translateX(8px) scale(.96);
}

.avec-assistant.is-speaking .avec-assistant__hint { animation: avecAssistantSpeech 4.3s ease both; }

.avec-assistant__hint::after {
    content: '';
    position: absolute;
    right: -7px;
    bottom: 7px;
    border-width: 7px 0 0 8px;
    border-style: solid;
    border-color: transparent transparent transparent var(--assistant-red-dark);
}

.avec-assistant.bubble-right .avec-assistant__hint {
    right: auto;
    left: calc(100% + 12px);
    border-radius: 12px 12px 12px 4px;
}

.avec-assistant.bubble-right .avec-assistant__hint::after {
    right: auto;
    left: -7px;
    border-width: 7px 8px 0 0;
    border-color: var(--assistant-red-dark) transparent transparent transparent;
}

.avec-assistant__panel {
    position: absolute;
    z-index: 30;
    right: 0;
    bottom: calc(100% + 16px);
    width: min(390px, calc(100vw - 24px));
    max-height: min(640px, calc(100vh - 28px));
    overflow: hidden;
    border: 1px solid rgba(10, 47, 104, .16);
    border-radius: 22px;
    background: #fff;
    color: var(--assistant-ink);
    box-shadow: 0 24px 65px rgba(6, 31, 72, .24);
    user-select: text;
    -webkit-user-select: text;
    animation: avecAssistantPanelIn .2s ease-out;
    display: flex;
    flex-direction: column;
}

.avec-assistant__panel[hidden] { display: none; }
.avec-assistant.panel-align-left .avec-assistant__panel { right: auto; left: 0; }
.avec-assistant.panel-below .avec-assistant__panel { top: calc(100% + 14px); bottom: auto; }

.avec-assistant__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 16px 12px;
    border-radius: 21px 21px 0 0;
    background: var(--assistant-red);
    color: #fff;
}

.avec-assistant__header-actions { display: flex; align-items: center; gap: 7px; }

.avec-assistant__header-button,
.avec-assistant__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 36px;
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 50%;
    background: rgba(255, 255, 255, .12);
    color: #fff;
    cursor: pointer;
    transition: background .18s ease, transform .18s ease;
}

.avec-assistant__header-button:hover,
.avec-assistant__header-button:focus-visible,
.avec-assistant__close:hover,
.avec-assistant__close:focus-visible { background: rgba(255, 255, 255, .24); }
.avec-assistant__header-button:focus-visible,
.avec-assistant__close:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.avec-assistant__header-button:disabled { opacity: .5; cursor: wait; }

.avec-assistant__eyebrow {
    display: block;
    margin-bottom: 2px;
    color: #bff7f7;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
}

.avec-assistant__title {
    margin: 0;
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-size: 20px;
    font-weight: 800;
}

.avec-assistant__close:focus-visible { background: rgba(255, 255, 255, .24); transform: rotate(6deg); }

.avec-assistant__body {
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 12px;
    overflow: hidden;
}

.avec-assistant__status {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 9px;
    color: #46705a;
    font-size: 12px;
    font-weight: 800;
    flex-shrink: 0;
}
.avec-assistant__status span { width: 7px; height: 7px; border-radius: 50%; background: #20a464; box-shadow: 0 0 0 4px rgba(32, 164, 100, .11); }

.avec-assistant__messages {
    flex: 1 1 130px;
    min-height: 90px;
    max-height: 250px;
    overflow: auto;
    padding: 3px 3px 6px;
    scrollbar-width: thin;
    overscroll-behavior: contain;
}

.avec-assistant__message {
    width: fit-content;
    max-width: 88%;
    margin: 0 0 9px;
    padding: 9px 11px;
    border-radius: 14px 14px 14px 4px;
    background: #f5f1f2;
    color: #292326;
    font-size: 13px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}
.avec-assistant__message--user { margin-left: auto; border-radius: 14px 14px 4px 14px; background: var(--assistant-red); color: #fff; }
.avec-assistant__message p { margin: 0; white-space: pre-wrap; }
.avec-assistant__message-label { display: block; margin-bottom: 3px; color: #8c6871; font-size: 11px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
.avec-assistant__message--user .avec-assistant__message-label { color: #c9f7f7; }
.avec-assistant__message.is-error { border: 1px solid #f0c2c8; background: #fff0f2; color: #7a1329; }
.avec-assistant__message.is-loading p::after { content: ''; display: inline-block; width: 16px; height: 4px; margin-left: 5px; border-radius: 4px; background: linear-gradient(90deg, #ad8790 30%, transparent 30%) 0 0 / 6px 4px; animation: avecAssistantTyping .8s steps(3) infinite; }

.avec-assistant__quick { display: flex; flex-shrink: 0; gap: 6px; padding: 2px 2px 9px; overflow-x: auto; scrollbar-width: none; }
.avec-assistant__quick::-webkit-scrollbar { display: none; }
.avec-assistant__quick button { flex: 0 0 auto; padding: 7px 10px; border: 1px solid #b9dfe3; border-radius: 999px; background: #fff; color: var(--assistant-red-dark); font-size: 12px; font-weight: 700; cursor: pointer; }
.avec-assistant__quick button:hover,
.avec-assistant__quick button:focus-visible { border-color: var(--assistant-teal); background: #effcfc; outline: none; }
.avec-assistant__quick button:disabled { opacity: .55; cursor: wait; }

.avec-assistant__form { display: flex; flex-shrink: 0; align-items: flex-end; gap: 7px; padding: 6px; border: 1px solid #dfd5d7; border-radius: 15px; background: #fff; box-shadow: 0 4px 15px rgba(76, 30, 41, .06); }
.avec-assistant__form:focus-within { border-color: rgba(149, 18, 44, .58); box-shadow: 0 0 0 3px rgba(149, 18, 44, .09); }
.avec-assistant__form textarea { flex: 1; min-height: 37px; max-height: 96px; padding: 8px 7px; resize: none; overflow-y: auto; border: 0; outline: 0; background: transparent; color: #221b1d; font: inherit; font-size: 13px; line-height: 1.4; }
.avec-assistant__form button { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 38px; width: 38px; height: 38px; border: 0; border-radius: 12px; background: var(--assistant-red); color: #fff; cursor: pointer; }
.avec-assistant__form button:hover { background: var(--assistant-red-dark); }
.avec-assistant__form button:disabled { opacity: .48; cursor: wait; }
.avec-assistant__form-meta { display: flex; flex-shrink: 0; justify-content: space-between; gap: 10px; padding: 5px 3px 8px; color: #6b6466; font-size: 11px; line-height: 1.35; }
.avec-assistant__form-meta span:last-child { text-align: right; }

.avec-assistant__contact { flex-shrink: 0; border-top: 1px solid #eee5e7; }
.avec-assistant__contact summary { display: flex; align-items: center; gap: 8px; padding: 9px 3px 4px; color: var(--assistant-red-dark); font-size: 12px; font-weight: 800; cursor: pointer; list-style: none; }
.avec-assistant__contact summary::-webkit-details-marker { display: none; }
.avec-assistant__contact summary .bi-chevron-down { margin-left: auto; transition: transform .18s ease; }
.avec-assistant__contact[open] summary .bi-chevron-down { transform: rotate(180deg); }
.avec-assistant__contact-body { max-height: 230px; padding: 8px 2px 2px; overflow-y: auto; }
.avec-assistant__unavailable { margin: 7px 0 0; padding: 8px; border-radius: 10px; background: #fff3cd; color: #664d03; font-size: 12px; }

.avec-assistant__contact-line {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin: 0 0 10px;
    color: #52667a;
    font-size: 12px;
    line-height: 1.45;
}
.avec-assistant__contact-line i { margin-top: 2px; color: var(--assistant-orange); }
.avec-assistant__contact-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }

.avec-assistant__hours {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 11px;
    padding: 6px 10px;
    border-radius: 999px;
    background: #fff1dd;
    color: #7b3e00;
    font-size: 12px;
    font-weight: 700;
}

.avec-assistant__branch {
    padding: 11px;
    border: 1px solid #eadde0;
    border-radius: 16px;
    background: #fff;
}

.avec-assistant__branch + .avec-assistant__branch { margin-top: 8px; }

.avec-assistant__branch-heading {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 9px;
}

.avec-assistant__branch-heading > div { min-width: 0; }
.avec-assistant__branch-heading strong { display: block; color: var(--assistant-red-dark); font-size: 15px; }
.avec-assistant__branch-heading a { color: #666; font-size: 12px; text-decoration: none; }
.avec-assistant__branch-heading a:hover { color: var(--assistant-red); text-decoration: underline; }

.avec-assistant__branch-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 32px;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: #fbe9ed;
    color: var(--assistant-red);
    font-weight: 900;
}

.avec-assistant__branch p {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin: 0 0 11px;
    color: #53565a;
    font-size: 12px;
    line-height: 1.45;
}

.avec-assistant__branch p i { margin-top: 3px; color: var(--assistant-orange); }

.avec-assistant__zalo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    min-height: 40px;
    padding: 9px 12px;
    border-radius: 12px;
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    text-decoration: none;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.avec-assistant__zalo--1 { background: var(--assistant-red); }
.avec-assistant__zalo--2 { background: #07888D; }
.avec-assistant__zalo--hotline { background: #FF6B24; }
.avec-assistant__zalo--email { background: #9254DE; }
.avec-assistant__zalo:hover,
.avec-assistant__zalo:focus-visible { color: #fff; transform: translateY(-2px); box-shadow: 0 8px 18px rgba(110, 13, 32, .2); }
.avec-assistant__zalo--1:hover { background: var(--assistant-red-dark); }
.avec-assistant__zalo--2:hover { background: #056b6f; }
.avec-assistant__zalo--hotline:hover { background: #d9500f; }
.avec-assistant__zalo--email:hover { background: #7540b9; }
.avec-assistant__zalo:focus-visible { outline: 3px solid rgba(255, 148, 8, .35); outline-offset: 2px; }

.avec-assistant__zalo--disabled {
    background: #e8e8e8;
    color: #666;
    cursor: not-allowed;
    text-align: center;
}

.avec-assistant__zalo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 22px;
    border-radius: 7px;
    background: #fff;
    color: #0877d1;
    font-family: Arial, sans-serif;
    font-size: 11px;
    font-weight: 900;
}

@keyframes avecAssistantHeadFloat {
    0%, 100% { transform: translateY(1px) rotate(-1deg); }
    50% { transform: translateY(-5px) rotate(1deg); }
}

@keyframes avecAssistantHeadHello {
    0%, 100% { transform: translateY(0) rotate(0) scale(1); }
    25% { transform: translateY(-7px) rotate(-6deg) scale(1.05); }
    50% { transform: translateY(-4px) rotate(5deg) scale(1.04); }
    75% { transform: translateY(-6px) rotate(-3deg) scale(1.03); }
}

@keyframes avecAssistantShadow {
    0%, 100% { opacity: .62; transform: scaleX(1); }
    50% { opacity: .34; transform: scaleX(.78); }
}

@keyframes avecAssistantExcited {
    0%, 100% { transform: perspective(500px) translateY(0) scale(1); }
    38% { transform: perspective(500px) translateY(-11px) scale(1.08, .94); }
    68% { transform: perspective(500px) translateY(2px) scale(.97, 1.04); }
}

@keyframes avecAssistantOnline {
    0%, 100% { box-shadow: 0 2px 6px rgba(0, 0, 0, .18), 0 0 0 0 rgba(32, 164, 100, .42); }
    50% { box-shadow: 0 2px 6px rgba(0, 0, 0, .18), 0 0 0 7px rgba(32, 164, 100, 0); }
}

@keyframes avecAssistantSpeech {
    0%, 100% { opacity: 0; transform: translateX(8px) scale(.96); }
    10%, 84% { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes avecAssistantPanelIn {
    from { opacity: 0; transform: translateY(8px) scale(.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes avecAssistantTyping { to { background-position: 18px 0; } }

@media (max-width: 768px) {
    .avec-assistant { width: 80px; height: 74px; right: max(12px, env(safe-area-inset-right)); bottom: max(14px, env(safe-area-inset-bottom)); }
    .avec-assistant__trigger { width: 80px; height: 74px; }
    .avec-assistant__head { width: 80px; height: 65px; }
    .avec-assistant__online { right: 0; top: auto; bottom: 0; }
    .avec-assistant__hint { display: none; }
}

@media (max-width: 575px) {
    .avec-assistant { width: 0; height: 0; right: 10px; bottom: calc(var(--app-dock-height, 68px) + var(--app-safe-bottom, 0px) + 10px); pointer-events: none; }
    .avec-assistant__trigger { display: none; }
    .avec-assistant__hint { display: none; }
    .avec-assistant__panel {
        position: fixed;
        top: auto !important;
        right: 10px !important;
        bottom: calc(var(--app-dock-height, 68px) + var(--app-safe-bottom, 0px) + 10px) !important;
        left: 10px !important;
        width: auto;
        max-height: calc(100dvh - var(--app-dock-height, 68px) - var(--app-safe-bottom, 0px) - 30px) !important;
        pointer-events: auto;
    }
    .avec-assistant__header { padding: 15px; }
    .avec-assistant__body { padding: 10px; }
    .avec-assistant__messages { max-height: min(240px, 34vh); }
}

@media (prefers-reduced-motion: reduce) {
    .avec-assistant::before,
    .avec-assistant__hint,
    .avec-assistant__panel,
    .avec-assistant__head,
    .avec-assistant__online { animation: none; }
    .avec-assistant__trigger,
    .avec-assistant__stage,
    .avec-assistant__zalo { transition: none; }
    .avec-assistant.is-speaking .avec-assistant__hint { opacity: 1; transform: none; }
}