/**
 * IUS Scan Advisor — Chat Widget Styles
 *
 * Uses CSS custom properties for theming, set dynamically
 * from WordPress admin settings via wp_localize_script.
 */

:root {
    --ius-sa-accent: #1B3A5C;
    --ius-sa-accent-light: #264d73;
    --ius-sa-accent-lighter: #e8eef4;
    --ius-sa-bg: #ffffff;
    --ius-sa-bg-messages: #f5f7f9;
    --ius-sa-text: #1a1a2e;
    --ius-sa-text-light: #5a6578;
    --ius-sa-border: #e2e6eb;
    --ius-sa-radius: 14px;
    --ius-sa-shadow: 0 8px 32px rgba(27, 58, 92, 0.18), 0 2px 8px rgba(0, 0, 0, 0.08);
    --ius-sa-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    --ius-sa-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ──────────────────────────────────────────────────────────────────────────
   FLOATING TOGGLE BUTTON — Two-line stacked design
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999998;
    border: none;
    background: var(--ius-sa-accent);
    color: #ffffff;
    cursor: pointer;
    padding: 12px 20px;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(27, 58, 92, 0.3), 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform var(--ius-sa-transition), box-shadow var(--ius-sa-transition), border-radius var(--ius-sa-transition), padding var(--ius-sa-transition);
}

.ius-sa-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(27, 58, 92, 0.4), 0 2px 8px rgba(0, 0, 0, 0.12);
}

.ius-sa-toggle:active {
    transform: translateY(0) scale(0.97);
}

.ius-sa-toggle__content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ius-sa-toggle__content--close {
    justify-content: center;
}

.ius-sa-toggle__icon {
    flex-shrink: 0;
}

.ius-sa-toggle__text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.ius-sa-toggle__title {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0.01em;
}

.ius-sa-toggle__subtitle {
    font-size: 11.5px;
    opacity: 0.72;
    line-height: 1.3;
    font-weight: 400;
}

/* When open: collapse to a compact close button */
.ius-sa-toggle[aria-expanded="true"] {
    padding: 14px;
    border-radius: 50%;
}

/* ──────────────────────────────────────────────────────────────────────────
   WIDGET CONTAINER
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-widget {
    font-family: var(--ius-sa-font);
    font-size: 14.5px;
    line-height: 1.55;
    color: var(--ius-sa-text);
    background: var(--ius-sa-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-sizing: border-box;
}

.ius-sa-widget *,
.ius-sa-widget *::before,
.ius-sa-widget *::after {
    box-sizing: border-box;
}

/* Floating mode */
.ius-sa-widget--floating {
    position: fixed;
    bottom: 100px;
    right: 24px;
    z-index: 999999;
    width: 400px;
    height: 580px;
    max-height: calc(100vh - 140px);
    border-radius: var(--ius-sa-radius);
    box-shadow: var(--ius-sa-shadow);
    border: 1px solid var(--ius-sa-border);
    transform: translateY(16px) scale(0.96);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--ius-sa-transition), opacity var(--ius-sa-transition), visibility 0s linear 0.25s;
}

.ius-sa-widget--floating.ius-sa-widget--open {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
    transition: transform var(--ius-sa-transition), opacity var(--ius-sa-transition), visibility 0s linear 0s;
}

/* Inline mode (shortcode) */
.ius-sa-widget--inline {
    border-radius: var(--ius-sa-radius);
    border: 1px solid var(--ius-sa-border);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    min-height: 400px;
}

/* ──────────────────────────────────────────────────────────────────────────
   HEADER
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--ius-sa-accent);
    color: #ffffff;
    flex-shrink: 0;
}

.ius-sa-widget--floating .ius-sa-header {
    border-radius: var(--ius-sa-radius) var(--ius-sa-radius) 0 0;
}

.ius-sa-widget--inline .ius-sa-header {
    border-radius: var(--ius-sa-radius) var(--ius-sa-radius) 0 0;
}

.ius-sa-header__info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ius-sa-header__avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ius-sa-header__title {
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.01em;
}

.ius-sa-header__subtitle {
    font-size: 12px;
    opacity: 0.75;
    margin-top: 1px;
}

.ius-sa-header__restart {
    background: rgba(255, 255, 255, 0.12);
    border: none;
    color: #fff;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--ius-sa-transition);
}

.ius-sa-header__restart:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ──────────────────────────────────────────────────────────────────────────
   MESSAGES AREA
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-messages {
    flex: 1;
    overflow-y: auto;
    padding: 18px;
    background: var(--ius-sa-bg-messages);
    display: flex;
    flex-direction: column;
    gap: 14px;
    scroll-behavior: smooth;
}

.ius-sa-messages::-webkit-scrollbar {
    width: 5px;
}

.ius-sa-messages::-webkit-scrollbar-track {
    background: transparent;
}

.ius-sa-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.12);
    border-radius: 10px;
}

/* Message bubbles */
.ius-sa-msg {
    max-width: 85%;
    padding: 11px 15px;
    border-radius: 16px;
    animation: ius-sa-msg-in 0.3s ease-out;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

@keyframes ius-sa-msg-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.ius-sa-msg--user {
    align-self: flex-end;
    background: var(--ius-sa-accent);
    color: #ffffff;
    border-bottom-right-radius: 4px;
}

.ius-sa-msg--assistant {
    align-self: flex-start;
    background: #ffffff;
    color: var(--ius-sa-text);
    border: 1px solid var(--ius-sa-border);
    border-bottom-left-radius: 4px;
}

.ius-sa-msg--assistant p {
    margin: 0 0 8px 0;
}

.ius-sa-msg--assistant p:last-child {
    margin-bottom: 0;
}

/* Typing indicator */
.ius-sa-typing {
    align-self: flex-start;
    display: flex;
    gap: 5px;
    padding: 14px 18px;
    background: #ffffff;
    border: 1px solid var(--ius-sa-border);
    border-radius: 16px;
    border-bottom-left-radius: 4px;
}

.ius-sa-typing__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--ius-sa-text-light);
    opacity: 0.4;
    animation: ius-sa-bounce 1.2s ease-in-out infinite;
}

.ius-sa-typing__dot:nth-child(2) { animation-delay: 0.15s; }
.ius-sa-typing__dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes ius-sa-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30%           { transform: translateY(-5px); opacity: 1; }
}

/* ──────────────────────────────────────────────────────────────────────────
   SCAN RECOMMENDATION CARDS
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-scan-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
}

.ius-sa-scan-card {
    background: var(--ius-sa-accent-lighter);
    border: 1px solid rgba(27, 58, 92, 0.12);
    border-radius: 12px;
    padding: 14px 16px;
    transition: border-color var(--ius-sa-transition);
}

.ius-sa-scan-card:hover {
    border-color: var(--ius-sa-accent);
}

.ius-sa-scan-card__name {
    font-weight: 600;
    font-size: 14px;
    color: var(--ius-sa-accent);
    margin-bottom: 4px;
}

.ius-sa-scan-card__reason {
    font-size: 13px;
    color: var(--ius-sa-text-light);
    margin-bottom: 10px;
    line-height: 1.45;
}

.ius-sa-scan-card__links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.ius-sa-scan-card__link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--ius-sa-transition);
    line-height: 1.3;
}

.ius-sa-scan-card__link--info {
    background: #ffffff;
    color: var(--ius-sa-accent);
    border: 1px solid var(--ius-sa-accent);
}

.ius-sa-scan-card__link--info:hover {
    background: var(--ius-sa-accent);
    color: #ffffff;
}

.ius-sa-scan-card__link--book {
    background: #D85A30;
    color: #ffffff;
    border: 1px solid #D85A30;
}

.ius-sa-scan-card__link--book:hover {
    background: #c04e28;
    border-color: #c04e28;
}

/* ──────────────────────────────────────────────────────────────────────────
   INPUT AREA
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-input-area {
    flex-shrink: 0;
    background: var(--ius-sa-bg);
    border-top: 1px solid var(--ius-sa-border);
}

.ius-sa-disclaimer-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    font-size: 11px;
    color: var(--ius-sa-text-light);
    background: #fafbfc;
    border-bottom: 1px solid var(--ius-sa-border);
}

.ius-sa-disclaimer-bar svg {
    flex-shrink: 0;
    opacity: 0.5;
}

.ius-sa-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 12px 14px;
}

.ius-sa-input {
    flex: 1;
    border: 1px solid var(--ius-sa-border);
    border-radius: 12px;
    padding: 10px 14px;
    font-family: var(--ius-sa-font);
    font-size: 14px;
    line-height: 1.45;
    resize: none;
    max-height: 100px;
    overflow-y: auto;
    outline: none;
    transition: border-color var(--ius-sa-transition), box-shadow var(--ius-sa-transition);
    background: var(--ius-sa-bg);
    color: var(--ius-sa-text);
}

.ius-sa-input:focus {
    border-color: var(--ius-sa-accent);
    box-shadow: 0 0 0 3px rgba(27, 58, 92, 0.1);
}

.ius-sa-input::placeholder {
    color: #9ca3af;
}

.ius-sa-send {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 12px;
    border: none;
    background: var(--ius-sa-accent);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--ius-sa-transition), transform var(--ius-sa-transition), opacity var(--ius-sa-transition);
}

.ius-sa-send:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ius-sa-send:not(:disabled):hover {
    background: var(--ius-sa-accent-light);
    transform: scale(1.05);
}

.ius-sa-send:not(:disabled):active {
    transform: scale(0.95);
}

/* ──────────────────────────────────────────────────────────────────────────
   WELCOME MESSAGE FORMATTING
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-msg--welcome {
    background: linear-gradient(135deg, var(--ius-sa-accent-lighter) 0%, #ffffff 100%);
    border: 1px solid rgba(27, 58, 92, 0.1);
}

/* ──────────────────────────────────────────────────────────────────────────
   ERROR MESSAGES
   ────────────────────────────────────────────────────────────────────── */

.ius-sa-msg--error {
    align-self: center;
    max-width: 90%;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    font-size: 13px;
    text-align: center;
}

/* ──────────────────────────────────────────────────────────────────────────
   RESPONSIVE
   ────────────────────────────────────────────────────────────────────── */

@media (max-width: 480px) {
    .ius-sa-widget--floating {
        bottom: 0;
        right: 0;
        left: 0;
        width: 100%;
        height: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .ius-sa-widget--floating .ius-sa-header {
        border-radius: 0;
    }

    .ius-sa-toggle {
        bottom: 16px;
        right: 16px;
        padding: 10px 16px;
    }

    .ius-sa-toggle__title {
        font-size: 13px;
    }

    .ius-sa-toggle__subtitle {
        font-size: 11px;
    }
}

@media (max-width: 440px) and (min-width: 481px) {
    .ius-sa-widget--floating {
        width: calc(100vw - 32px);
        right: 16px;
    }
}