/**
 * AI CHAT DIALOG COMPONENT
 * Компактний розгортуваний AI чат в header згідно ~ правил
 * БЕЗ !important, БЕЗ inline styles, зовнішній CSS
 */

/* ========================================
   AI CHAT DIALOG CONTAINER
   ======================================== */

.ai-chat-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    display: none;
    pointer-events: none;
}

.ai-chat-dialog.dialog-open {
    display: block;
    pointer-events: none;
}

/* ========================================
   OVERLAY (не блокує клікі)
   ======================================== */

.ai-dialog-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0;
}

/* ========================================
   DIALOG CONTAINER
   ======================================== */

.ai-dialog-container {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 420px;
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 120px);
    background: var(--color-bg);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    pointer-events: auto;
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
    transform-origin: top right;
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ai-chat-dialog.dialog-open .ai-dialog-container {
    opacity: 1;
    transform: scale(1) translateY(0);
}

[data-theme="dark"] .ai-dialog-container {
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

[data-theme="light"] .ai-dialog-container {
    background: #ffffff;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .ai-dialog-header {
    background: #f5f5f5;
    border-bottom: 1px solid #e0e0e0;
}

[data-theme="light"] .ai-dialog-input-wrapper {
    background: #ffffff;
    border-color: #e0e0e0;
}

[data-theme="light"] .ai-message-content {
    background: #f5f5f5;
}

/* ========================================
   DIALOG HEADER
   ======================================== */

.ai-dialog-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg-gray);
    border-bottom: 1px solid var(--color-border);
    border-radius: 20px 20px 0 0;
    flex-shrink: 0;
    cursor: move;
    user-select: none;
}

.ai-dialog-header:active {
    cursor: grabbing;
}

.ai-dialog-detach,
.ai-dialog-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
    border-radius: 50%;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    flex-shrink: 0;
}

.ai-dialog-close {
    order: 3;
}

.ai-dialog-detach svg,
.ai-dialog-close svg {
    width: 20px;
    height: 20px;
    display: block;
    pointer-events: none;
}

.ai-dialog-detach:hover,
.ai-dialog-close:hover {
    background: var(--color-bg);
    transform: scale(1.1);
}

.ai-dialog-detach:active,
.ai-dialog-close:active {
    transform: scale(0.9);
}

.ai-dialog-detach svg,
.ai-dialog-close svg {
    stroke: currentColor;
}

[data-theme="light"] .ai-dialog-detach svg,
[data-theme="light"] .ai-dialog-close svg {
    stroke: #1a1a1a;
}

[data-theme="dark"] .ai-dialog-detach svg,
[data-theme="dark"] .ai-dialog-close svg {
    stroke: white;
}

[data-theme="light"] .ai-dialog-detach:hover,
[data-theme="light"] .ai-dialog-close:hover {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .ai-dialog-detach:hover,
[data-theme="dark"] .ai-dialog-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.ai-dialog-title {
    flex: 1;
    margin: 0;
    font-size: 1.125rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 600;
    color: var(--color-text);
    order: 1;
}

.ai-dialog-detach {
    order: 2;
}

[data-theme="light"] .ai-dialog-title {
    color: #1a1a1a;
}

/* ========================================
   DIALOG MESSAGES
   ======================================== */

.ai-dialog-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.ai-message {
    display: flex;
    gap: var(--spacing-sm);
    animation: messageSlideIn var(--transition-normal) ease-out;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ai-message--user {
    flex-direction: row-reverse;
}

.ai-message-avatar {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
}

.ai-message--user .ai-message-avatar {
    background: var(--color-bg-gray);
}

.ai-message-content {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-gray);
    border-radius: 16px;
    font-size: 0.9375rem;
    font-family: 'Roboto', sans-serif;
    line-height: 1.5;
    color: var(--color-text);
}

[data-theme="light"] .ai-message-content {
    color: #1a1a1a;
}

[data-theme="light"] .ai-message--user .ai-message-content {
    color: white;
}

.ai-message--user .ai-message-content {
    background: var(--color-primary);
    color: white;
}

.ai-message-content p {
    margin: 0 0 var(--spacing-sm);
}

.ai-message-content p:last-child {
    margin-bottom: 0;
}

/* Loading indicator для відповіді AI */
.ai-message-loading {
    display: flex;
    gap: 4px;
    padding: var(--spacing-xs);
}

.ai-loading-dot {
    width: 8px;
    height: 8px;
    background: var(--color-text-light);
    border-radius: 50%;
    animation: dotPulse 1.4s infinite ease-in-out;
}

.ai-loading-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.ai-loading-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes dotPulse {

    0%,
    80%,
    100% {
        transform: scale(0.8);
        opacity: 0.5;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========================================
   DIALOG INPUT CONTAINER
   ======================================== */

.ai-dialog-input-container {
    flex-shrink: 0;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.ai-dialog-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.ai-dialog-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg-gray);
    border: 2px solid var(--color-border-light);
    border-radius: 16px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.ai-dialog-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-alpha-10);
}

.ai-dialog-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.9375rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 400;
    color: var(--color-text);
    resize: none;
    outline: none;
    min-height: 42px;
    max-height: 118px;
    overflow-y: auto;
    line-height: 1.5;
}

.ai-dialog-input::placeholder {
    color: var(--color-text-light);
}

[data-theme="light"] .ai-dialog-input {
    color: #1a1a1a;
}

[data-theme="light"] .ai-dialog-input::placeholder {
    color: #666;
}

.ai-dialog-send {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform var(--transition-fast);
    padding: 0;
}

.ai-dialog-send:hover {
    transform: scale(1.1);
}

.ai-dialog-send:active {
    transform: scale(0.95);
}

.ai-dialog-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.ai-dialog-send img {
    width: 22px;
    height: 22px;
    object-fit: contain;
    display: block;
}

.ai-dialog-counter {
    display: flex;
    justify-content: flex-end;
    font-size: 0.75rem;
    font-family: 'Roboto', sans-serif;
    color: var(--color-text-light);
}

[data-theme="light"] .ai-dialog-counter {
    color: #666;
}

/* ========================================
   ERROR STATE
   ======================================== */

.ai-message-error {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(229, 9, 20, 0.1);
    border-left: 3px solid #E50914;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.875rem;
    font-family: 'Roboto', sans-serif;
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */

.ai-dialog-messages::-webkit-scrollbar {
    width: 6px;
}

.ai-dialog-messages::-webkit-scrollbar-track {
    background: transparent;
}

.ai-dialog-messages::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

.ai-dialog-messages::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-light);
}

.ai-dialog-input::-webkit-scrollbar {
    width: 4px;
}

.ai-dialog-input::-webkit-scrollbar-track {
    background: transparent;
}

.ai-dialog-input::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {

    /* AI Chat Dialog працює на мобільних через кнопку в нижньому меню */
    .ai-chat-toggle {
        display: none;
    }

    .ai-dialog-container {
        top: 20px;
        right: 10px;
        left: 10px;
        width: auto;
        max-width: none;
        max-height: calc(100vh - 100px);
    }
}

@media (max-width: 767px) {
    .ai-dialog-container {
        top: 15px;
        right: 8px;
        left: 8px;
        /* Використовуємо env() з fallback для уніфікації з iOS */
        max-height: calc(100vh - env(safe-area-inset-bottom, 90px));
    }
}

@media (max-width: 767px) {
    .ai-dialog-container {
        top: 0;
        right: 0;
        left: 0;
        bottom: 0;
        border-radius: 0;
        /* Використовуємо env() з fallback для уніфікації з iOS */
        max-height: calc(100vh - env(safe-area-inset-bottom, 0px));
        max-width: 100vw;
    }

    .ai-dialog-header {
        border-radius: 0;
    }

    .ai-dialog-messages {
        padding: var(--spacing-sm);
    }

    .ai-dialog-input-container {
        padding: var(--spacing-sm);
    }

    .ai-dialog-input {
        min-height: 40px;
        max-height: 100px;
        font-size: 16px;
        font-family: 'Roboto', sans-serif;
    }

    .ai-dialog-send img {
        width: 18px;
        height: 18px;
    }
}

/* ===== iOS SAFARI SPECIFIC ===== */
@supports (-webkit-touch-callout: none) {
    @media (max-width: 1024px) {
        .ai-dialog-container {
            max-height: calc(100vh - max(100px, env(safe-area-inset-bottom)));
        }
    }

    @media (max-width: 767px) {
        .ai-dialog-container {
            /* iOS-специфічне: використовуємо env() без fallback для правильного відображення safe area */
            max-height: calc(100vh - env(safe-area-inset-bottom));
            padding-bottom: env(safe-area-inset-bottom);
        }

        .ai-dialog-input-container {
            padding-bottom: max(var(--spacing-sm), calc(env(safe-area-inset-bottom) + var(--spacing-xs)));
        }

        /* font-size залишаємо в стандартному медіа-запиті для уніфікації */
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.ai-dialog-detach:focus-visible,
.ai-dialog-close:focus-visible,
.ai-dialog-send:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.ai-dialog-input:focus {
    outline: none;
}

/* ========================================
   REDUCED MOTION SUPPORT
   ======================================== */

@media (prefers-reduced-motion: reduce) {

    .ai-chat-dialog,
    .ai-dialog-container,
    .ai-dialog-detach,
    .ai-dialog-close,
    .ai-dialog-send,
    .ai-message {
        transition: none;
        animation: none;
    }

    .ai-loading-dot {
        animation: none;
    }
}

/* ========================================
   HIGH CONTRAST MODE
   ======================================== */

@media (prefers-contrast: high) {
    .ai-dialog-container {
        border: 2px solid var(--color-text);
    }

    .ai-dialog-header,
    .ai-dialog-input-container {
        border-width: 2px;
    }

    .ai-message-content {
        border: 1px solid var(--color-border);
    }
}

/* ========================================
   DARK THEME SPECIFIC
   ======================================== */

[data-theme="dark"] .ai-dialog-header {
    background: var(--color-bg-dark);
}

[data-theme="dark"] .ai-message-content {
    background: var(--color-bg-dark);
}

[data-theme="dark"] .ai-message--user .ai-message-content {
    background: var(--color-primary);
}

[data-theme="dark"] .ai-dialog-input-wrapper {
    background: var(--color-bg-dark);
}

[data-theme="dark"] .ai-dialog-send img {
    filter: brightness(0.95);
}

[data-theme="dark"] .ai-dialog-send:hover img {
    filter: brightness(1.1);
}