/* ==========================================
   EDUSMART AI ASSISTANT
   Design System Integration
========================================== */


/* ==========================================
   1. CHAT CONTAINER
========================================== */

.edusmart-chat {
    position: relative;
    z-index: 9999;
}


/* ==========================================
   2. FLOATING TOGGLE BUTTON
========================================== */

.edusmart-chat__toggle {
    position: fixed;
    right: 28px;
    bottom: 28px;

    display: flex;
    align-items: center;
    gap: 10px;

    min-height: 54px;
    padding: 8px 18px 8px 10px;

    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: var(--radius-pill);

    background: var(--color-primary);

    color: var(--color-white);

    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);

    cursor: pointer;

    box-shadow: var(--shadow-medium);

    transition:
        transform var(--transition),
        box-shadow var(--transition),
        background var(--transition);
}


/* Gold Accent */

.edusmart-chat__toggle::before {
    content: "";

    position: absolute;

    top: -2px;
    left: 20px;
    right: 20px;

    height: 2px;

    border-radius: var(--radius-pill);

    background: var(--color-accent);
}


/* Hover */

.edusmart-chat__toggle:hover {
    background: var(--color-primary-dark);

    transform: translateY(-3px);

    box-shadow: var(--shadow-large);
}


/* Active */

.edusmart-chat__toggle:active {
    transform: translateY(-1px);
}


/* ==========================================
   3. TOGGLE ICON
========================================== */

.edusmart-chat__toggle-icon {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 38px;
    height: 38px;

    flex: 0 0 38px;

    border-radius: 50%;

    background: rgba(255, 255, 255, 0.14);

    border: 1px solid rgba(255, 255, 255, 0.30);

    color: var(--color-white);

    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);

    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.20);
}


/* ==========================================
   4. TOGGLE LABEL
========================================== */

.edusmart-chat__toggle-label {
    white-space: nowrap;
}


/* ==========================================
   5. CHAT WINDOW
========================================== */

.edusmart-chat__window {
    position: fixed;

    right: 28px;
    bottom: 94px;

    display: flex;
    flex-direction: column;

    width: min(390px, calc(100vw - 32px));
    max-height: min(680px, calc(100vh - 125px));

    overflow: hidden;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);

    background: var(--color-white);

    box-shadow: var(--shadow-large);

    transform-origin: bottom right;

    animation: edusmartChatOpen 0.25s ease both;
}


/* ==========================================
   6. GOLD TOP LINE
========================================== */

.edusmart-chat__window::before {
    content: "";

    position: absolute;

    top: 0;
    left: 0;
    right: 0;

    height: 4px;

    background: var(--color-accent);
}


/* ==========================================
   7. CHAT HEADER
========================================== */

.edusmart-chat__header {
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 22px 18px 16px;

    background: var(--color-primary-light);

    border-bottom: 1px solid var(--color-border);
}


/* Identity */

.edusmart-chat__identity {
    display: flex;
    align-items: center;
    gap: 12px;
}


/* ==========================================
   8. AVATAR
========================================== */

.edusmart-chat__avatar {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 44px;
    height: 44px;

    flex: 0 0 44px;

    border-radius: var(--radius-medium);

    background: var(--color-primary);

    color: var(--color-white);

    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.5px;

    box-shadow: var(--shadow-small);
}


/* ==========================================
   9. HEADER TEXT
========================================== */

.edusmart-chat__title {
    margin: 0;

    color: var(--color-primary-dark);

    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);

    line-height: var(--line-height-tight);
}


.edusmart-chat__status {
    margin: 3px 0 0;

    color: var(--color-text-light);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}


/* ==========================================
   10. CLOSE BUTTON
========================================== */

.edusmart-chat__close {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 34px;
    height: 34px;

    padding: 0;

    border: 0;
    border-radius: 50%;

    background: transparent;

    color: var(--color-primary-dark);

    font-family: var(--font-body);
    font-size: 24px;
    font-weight: var(--font-weight-normal);

    line-height: 1;

    cursor: pointer;

    transition:
        background var(--transition),
        color var(--transition);
}


.edusmart-chat__close:hover {
    background: rgba(44, 140, 123, 0.10);

    color: var(--color-primary);
}


/* ==========================================
   11. CHAT BODY
========================================== */

.edusmart-chat__body {
    flex: 1;

    padding: 20px;

    overflow-y: auto;

    background: var(--color-background);

    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}


/* ==========================================
   12. ASSISTANT MESSAGE
========================================== */

.edusmart-chat__message {
    max-width: 88%;

    padding: 14px 16px;

    border-radius: var(--radius-medium);

    font-family: var(--font-body);
    font-size: var(--font-size-sm);

    line-height: var(--line-height-normal);
}


.edusmart-chat__message p {
    margin: 0;
}


.edusmart-chat__message p + p {
    margin-top: 8px;
}


.edusmart-chat__message--assistant {
    background: var(--color-primary-light);

    border: 1px solid var(--color-border);

    border-top-left-radius: var(--radius-small);

    color: var(--color-text);
}


/* ==========================================
   13. USER MESSAGE
========================================== */

.edusmart-chat__message--user {
    margin-left: auto;

    background: var(--color-primary);

    color: var(--color-white);

    border-top-right-radius: var(--radius-small);
}


/* ==========================================
   14. SUGGESTIONS
========================================== */

.edusmart-chat__suggestions {
    margin-top: 20px;
}


.edusmart-chat__suggestions-title {
    margin: 0 0 10px;

    color: var(--color-text-light);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}


.edusmart-chat__suggestion {
    display: block;

    width: 100%;

    margin-bottom: 8px;
    padding: 11px 13px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);

    background: var(--color-white);

    color: var(--color-primary-dark);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);

    text-align: left;

    cursor: pointer;

    transition:
        border-color var(--transition),
        background var(--transition),
        transform var(--transition);
}


.edusmart-chat__suggestion:hover {
    border-color: var(--color-primary);

    background: var(--color-primary-light);

    transform: translateX(2px);
}


/* ==========================================
   15. DYNAMIC MESSAGES
========================================== */

.edusmart-chat__messages {
    display: flex;
    flex-direction: column;
    gap: 10px;

    margin-top: 14px;
}


.edusmart-chat__messages:empty {
    display: none;
}


/* ==========================================
   16. INPUT FORM
========================================== */

.edusmart-chat__form {
    padding: 12px 16px 14px;

    border-top: 1px solid var(--color-border);

    background: var(--color-white);
}


.edusmart-chat__label {
    position: absolute;

    width: 1px;
    height: 1px;

    padding: 0;
    margin: -1px;

    overflow: hidden;

    clip: rect(0, 0, 0, 0);

    white-space: nowrap;

    border: 0;
}


/* ==========================================
   17. INPUT WRAPPER
========================================== */

.edusmart-chat__input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}


/* ==========================================
   18. INPUT
========================================== */

.edusmart-chat__input {
    flex: 1;

    min-width: 0;

    height: 44px;

    padding: 0 14px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);

    background: var(--color-white);

    color: var(--color-text);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);

    outline: none;

    transition:
        border-color var(--transition),
        background var(--transition),
        box-shadow var(--transition);
}


.edusmart-chat__input::placeholder {
    color: var(--color-text-light);
}


.edusmart-chat__input:focus {
    border-color: var(--color-primary);

    background: var(--color-white);

    box-shadow:
        0 0 0 3px rgba(44, 140, 123, 0.10);
}


/* ==========================================
   19. SEND BUTTON
========================================== */

.edusmart-chat__send {
    height: 44px;

    padding: 0 16px;

    border: 0;
    border-radius: var(--radius-medium);

    background: var(--color-primary);

    color: var(--color-white);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);

    cursor: pointer;

    box-shadow: var(--shadow-small);

    transition:
        background var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}


.edusmart-chat__send:hover {
    background: var(--color-primary-dark);

    transform: translateY(-1px);

    box-shadow: var(--shadow-medium);
}


/* ==========================================
   20. FOOTER
========================================== */

.edusmart-chat__footer {
    padding: 0 18px 14px;

    background: var(--color-white);
}


.edusmart-chat__footer p {
    margin: 0;

    color: var(--color-text-light);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);

    line-height: var(--line-height-normal);

    text-align: center;
}


/* ==========================================
   21. ACCESSIBILITY
========================================== */

.edusmart-chat__toggle:focus-visible,
.edusmart-chat__close:focus-visible,
.edusmart-chat__suggestion:focus-visible,
.edusmart-chat__send:focus-visible {
    outline: 3px solid rgba(44, 140, 123, 0.30);

    outline-offset: 3px;
}


/* ==========================================
   22. HIDDEN STATE
========================================== */

.edusmart-chat__window[hidden] {
    display: none;
}


/* ==========================================
   23. ANIMATION
========================================== */

@keyframes edusmartChatOpen {

    from {
        opacity: 0;

        transform:
            translateY(10px)
            scale(0.97);
    }

    to {
        opacity: 1;

        transform:
            translateY(0)
            scale(1);
    }

}


/* ==========================================
   24. MOBILE
========================================== */

@media (max-width: 600px) {

    .edusmart-chat__toggle {
        right: 16px;
        bottom: 16px;

        min-height: 50px;

        padding-right: 14px;
    }


    .edusmart-chat__toggle-icon {
        width: 36px;
        height: 36px;

        flex-basis: 36px;
    }


    .edusmart-chat__window {
        right: 12px;
        bottom: 78px;

        width: calc(100vw - 24px);

        max-height: calc(100vh - 100px);

        border-radius: var(--radius-large);
    }


    .edusmart-chat__body {
        padding: 16px;
    }

}


/* ==========================================
   25. SMALL MOBILE
========================================== */

@media (max-width: 380px) {

    .edusmart-chat__toggle-label {
        display: none;
    }


    .edusmart-chat__toggle {
        width: 52px;
        height: 52px;

        min-height: 52px;

        padding: 7px;

        justify-content: center;
    }


    .edusmart-chat__toggle-icon {
        width: 38px;
        height: 38px;

        flex-basis: 38px;
    }

}