/* ==========================================================================
   CSI Tecnopreven - Chatbot Widget Styles
   BEM naming convention with CSS custom properties.
   ========================================================================== */

/* ---------------------------------------------------------------------------
   Widget container
   --------------------------------------------------------------------------- */

.chat-widget {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-modal);
    font-family: var(--ff-main);
}

/* ---------------------------------------------------------------------------
   Floating Action Button (trigger)
   --------------------------------------------------------------------------- */

.chat-widget__trigger {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--c-primary-400);
    color: var(--c-text-inverse);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-fast), background var(--transition-fast);
    position: relative;
}

.chat-widget__trigger:hover {
    background: var(--c-primary-500);
    transform: scale(1.05);
}

.chat-widget__trigger:active {
    transform: scale(0.95);
}

.chat-widget__trigger-icon {
    width: 28px;
    height: 28px;
}

.chat-widget__trigger--enter {
    transition: all var(--transition-base);
}
.chat-widget__trigger--enter-start {
    opacity: 0;
    transform: scale(0.8);
}
.chat-widget__trigger--enter-end {
    opacity: 1;
    transform: scale(1);
}

/* Unread badge */
.chat-widget__badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 14px;
    height: 14px;
    background: var(--c-danger);
    border-radius: var(--radius-full);
    border: 2px solid var(--c-bg-surface);
}

/* ---------------------------------------------------------------------------
   Chat Panel
   --------------------------------------------------------------------------- */

.chat-widget__panel {
    /* W7-bis4 Ignacio F-UGLY-02 — sized like Intercom/Crisp/Stripe support widgets */
    width: 420px;
    height: 640px;
    background: var(--c-bg-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

/* Panel transitions */
.chat-widget__panel--enter {
    transition: all 300ms cubic-bezier(0.16, 1, 0.3, 1);
}
.chat-widget__panel--enter-start {
    opacity: 0;
    transform: translateY(16px) scale(0.95);
}
.chat-widget__panel--enter-end {
    opacity: 1;
    transform: translateY(0) scale(1);
}
.chat-widget__panel--leave {
    transition: all 200ms ease-in;
}
.chat-widget__panel--leave-start {
    opacity: 1;
    transform: translateY(0) scale(1);
}
.chat-widget__panel--leave-end {
    opacity: 0;
    transform: translateY(16px) scale(0.95);
}

/* ---------------------------------------------------------------------------
   Header
   --------------------------------------------------------------------------- */

.chat-widget__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    background: var(--c-primary-400);
    color: var(--c-text-inverse);
    flex-shrink: 0;
}

.chat-widget__header-info {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.chat-widget__header-dot {
    width: 8px;
    height: 8px;
    background: var(--c-success);
    border-radius: var(--radius-full);
}

.chat-widget__header-title {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
}

.chat-widget__header-actions {
    display: flex;
    gap: var(--space-1);
}

.chat-widget__header-btn {
    background: transparent;
    border: none;
    color: var(--c-text-inverse);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.chat-widget__header-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.15);
}

/* ---------------------------------------------------------------------------
   Context bar
   --------------------------------------------------------------------------- */

.chat-widget__context-bar {
    padding: var(--space-2) var(--space-4);
    background: var(--c-primary-050);
    border-bottom: 1px solid var(--c-primary-100);
    flex-shrink: 0;
}

.chat-widget__context-label {
    font-size: var(--fs-xs);
    color: var(--c-primary-500);
    font-weight: var(--fw-medium);
}

/* ---------------------------------------------------------------------------
   Messages area
   --------------------------------------------------------------------------- */

.chat-widget__messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    scroll-behavior: smooth;
}

/* Scrollbar styling */
.chat-widget__messages::-webkit-scrollbar {
    width: 4px;
}
.chat-widget__messages::-webkit-scrollbar-track {
    background: transparent;
}
.chat-widget__messages::-webkit-scrollbar-thumb {
    background: var(--c-primary-100);
    border-radius: var(--radius-full);
}

/* ---------------------------------------------------------------------------
   Message bubbles
   --------------------------------------------------------------------------- */

.chat-widget__msg {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}

.chat-widget__msg--user {
    align-self: flex-end;
}

.chat-widget__msg--assistant,
.chat-widget__msg--system {
    align-self: flex-start;
}

.chat-widget__msg-bubble {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--fs-sm);
    line-height: var(--lh-normal);
    word-break: break-word;
}

.chat-widget__msg--user .chat-widget__msg-bubble {
    background: var(--c-primary-400);
    color: var(--c-text-inverse);
    border-bottom-right-radius: var(--radius-sm);
}

.chat-widget__msg--assistant .chat-widget__msg-bubble {
    background: var(--c-primary-050);
    color: var(--c-text-dark);
    border-bottom-left-radius: var(--radius-sm);
}

/* ---------------------------------------------------------------------------
   Article/Guide cards
   --------------------------------------------------------------------------- */

.chat-widget__cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-2);
    width: 100%;
}

.chat-widget__card {
    background: var(--c-bg-surface);
    border: 1px solid var(--c-primary-100);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    transition: border-color var(--transition-fast);
}

.chat-widget__card:hover {
    border-color: var(--c-primary-300);
}

.chat-widget__card-type {
    margin-bottom: var(--space-1);
}

.chat-widget__card-badge {
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    color: var(--c-primary-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chat-widget__card-title {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--c-text-dark);
    margin: 0 0 var(--space-1) 0;
    line-height: var(--lh-tight);
}

.chat-widget__card-summary {
    font-size: var(--fs-xs);
    color: var(--c-text-body);
    margin: 0 0 var(--space-2) 0;
    line-height: var(--lh-normal);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.chat-widget__card-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.chat-widget__card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    color: var(--c-primary-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.chat-widget__card-link:hover {
    color: var(--c-primary-500);
}

.chat-widget__card-dismiss {
    background: none;
    border: none;
    font-size: var(--fs-xs);
    color: var(--c-text-muted);
    cursor: pointer;
    padding: var(--space-1);
    transition: color var(--transition-fast);
}

.chat-widget__card-dismiss:hover {
    color: var(--c-danger);
}

/* ---------------------------------------------------------------------------
   Action buttons
   --------------------------------------------------------------------------- */

.chat-widget__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.chat-widget__action-btn {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid var(--c-primary-200);
    background: var(--c-bg-surface);
    color: var(--c-primary-400);
}

.chat-widget__action-btn:hover {
    background: var(--c-primary-050);
    border-color: var(--c-primary-400);
}

.chat-widget__action-btn--primary {
    background: var(--c-primary-400);
    color: var(--c-text-inverse);
    border-color: var(--c-primary-400);
}

.chat-widget__action-btn--primary:hover {
    background: var(--c-primary-500);
}

/* ---------------------------------------------------------------------------
   Typing indicator
   --------------------------------------------------------------------------- */

.chat-widget__typing {
    display: flex;
    gap: 4px;
    padding: var(--space-3) var(--space-4);
    background: var(--c-bg-page);
    border-radius: var(--radius-lg);
    border-bottom-left-radius: var(--radius-sm);
    width: fit-content;
}

.chat-widget__typing span {
    width: 6px;
    height: 6px;
    background: var(--c-text-muted);
    border-radius: var(--radius-full);
    animation: chat-typing 1.4s ease-in-out infinite;
}

.chat-widget__typing span:nth-child(2) {
    animation-delay: 0.2s;
}

.chat-widget__typing span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes chat-typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-4px); opacity: 1; }
}

/* ---------------------------------------------------------------------------
   Input area
   --------------------------------------------------------------------------- */

.chat-widget__input-area {
    display: flex;
    align-items: flex-end;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    flex-shrink: 0;
}

.chat-widget__input {
    flex: 1;
    resize: none;
    border: 1px solid var(--c-primary-100);
    border-radius: var(--radius-lg);
    padding: var(--space-2) var(--space-3);
    font-family: var(--ff-main);
    font-size: var(--fs-sm);
    color: var(--c-text-dark);
    outline: none;
    transition: border-color var(--transition-fast);
    max-height: 80px;
    line-height: var(--lh-normal);
}

.chat-widget__input:focus {
    border-color: var(--c-primary-400);
}

.chat-widget__input::placeholder {
    color: var(--c-text-muted);
}

.chat-widget__send-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--c-primary-400);
    color: var(--c-text-inverse);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.chat-widget__send-btn svg {
    opacity: 1;
    width: 18px;
    height: 18px;
}

.chat-widget__send-btn:hover:not(:disabled) {
    background: var(--c-primary-500);
    transform: scale(1.05);
}

.chat-widget__send-btn:active:not(:disabled) {
    transform: scale(0.9);
}

.chat-widget__send-btn:disabled {
    /* W4-3 P1-3 — stronger visual disabled (uniform opacity) so active state pops */
    background: var(--c-primary-400);
    color: var(--c-text-inverse);
    opacity: 0.45;
    cursor: not-allowed;
}

/* ---------------------------------------------------------------------------
   Guide step progress (Issue #3)
   --------------------------------------------------------------------------- */

.chat-widget__guide-progress {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-2);
    margin-bottom: var(--space-1);
}

.chat-widget__guide-progress-label {
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    color: var(--c-primary-400);
    white-space: nowrap;
    flex-shrink: 0;
}

.chat-widget__guide-bar {
    flex: 1;
    height: 4px;
    background: var(--c-primary-100);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.chat-widget__guide-bar-fill {
    height: 100%;
    background: var(--c-primary-400);
    border-radius: var(--radius-full);
    transition: width 400ms ease;
    min-width: 8px;
}

/* ---------------------------------------------------------------------------
   Card type differentiation — articles vs guides vs courses (Issue #5)
   --------------------------------------------------------------------------- */

/* W4-7 P1-7 — guide/course tokens (replaced raw tailwind hex with vars) */
/* Guide cards — green accent */
.chat-widget__card--guide {
    border-color: var(--c-guide-border);
    background: var(--c-guide-bg);
}

.chat-widget__card--guide:hover {
    border-color: var(--c-guide-text);
}

.chat-widget__card-badge--guide {
    color: var(--c-guide-text);
}

/* Article cards — teal accent (default) */
.chat-widget__card--article {
    border-color: var(--c-primary-100);
}

.chat-widget__card-badge--article {
    color: var(--c-primary-400);
}

/* Course cards — amber accent */
.chat-widget__card--course {
    border-color: var(--c-course-border);
    background: var(--c-course-bg);
}

.chat-widget__card--course:hover {
    border-color: var(--c-course-text);
}

.chat-widget__card-badge--course {
    color: var(--c-course-text);
}

/* Document cards — grey accent */
.chat-widget__card--document {
    border-color: var(--c-primary-100);
}

.chat-widget__card-badge--document {
    color: var(--c-text-muted);
}

/* ---------------------------------------------------------------------------
   Responsive - Large screens
   --------------------------------------------------------------------------- */

/* W7-bis Vera/Ignacio iter3 — keep 420px even on large desktop (Stripe-tier widget size) */
@media (min-width: 99999px) { /* effectively disabled */
    .chat-widget__panel {
        width: 620px;
        height: 700px;
    }
}

/* ---------------------------------------------------------------------------
   Responsive - Mobile full screen
   --------------------------------------------------------------------------- */

@media (max-width: 768px) {
    .chat-widget {
        bottom: var(--space-4);
        right: var(--space-4);
    }

    .chat-widget__panel {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
    }

    .chat-widget__trigger {
        width: 48px;
        height: 48px;
    }

    .chat-widget__trigger-icon {
        width: 24px;
        height: 24px;
    }
}

/* W3-3 P0-3 — extra safety for very small viewports (<=500px).
   Ensures the FAB stays clickable above any nav/footer and never gets clipped. */
@media (max-width: 500px) {
    .chat-widget {
        position: fixed;
        /* W7-bis Ignacio iter4 F-UGLY-02 — give FAB more bottom margin so it doesn't overlap last card */
        bottom: max(var(--space-5), env(safe-area-inset-bottom, 0));
        right: var(--space-3);
        z-index: 9999;
    }

    .chat-widget__trigger {
        width: 56px;
        height: 56px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
    }

    .chat-widget__panel {
        height: 100dvh;
        max-height: 100dvh;
    }
}

/* ---------------------------------------------------------------------------
   Alpine.js x-cloak
   --------------------------------------------------------------------------- */

[x-cloak] {
    display: none !important;
}