/* IA — chat y consumo */
.ai-layout {
    padding-bottom: var(--space-16);
}

.ai-layout__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.ai-layout__header h1 {
    font-size: clamp(1.5rem, 4vw, var(--font-size-3xl));
    margin-bottom: var(--space-1);
}

.ai-credits-badge {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    min-width: 200px;
    box-shadow: var(--shadow-card);
}

.ai-credits-badge__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.ai-credits-badge__value {
    font-family: var(--font-display);
    font-weight: 800;
    color: var(--color-accent-soft);
    font-size: var(--font-size-2xl);
    line-height: 1;
}

.ai-credits-badge__meter {
    height: 6px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.ai-credits-badge__meter-fill {
    width: var(--progress, 0%);
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    transition: width 0.4s ease;
}

.ai-credits-badge__label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.ai-layout__grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-6);
    align-items: start;
}

.ai-sidebar {
    padding: var(--space-5);
    position: sticky;
    top: calc(var(--header-height) + var(--space-4));
    max-height: calc(100vh - var(--header-height) - var(--space-8));
    overflow-y: auto;
    box-shadow: var(--shadow-card);
}

.ai-sidebar h3 {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.ai-sidebar__new {
    margin-top: var(--space-4);
}

.ai-conv-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ai-conv-list__item {
    display: block;
    width: 100%;
    text-align: left;
    padding: var(--space-3);
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1.4;
}

.ai-conv-list__item:hover {
    background: rgba(34, 211, 238, 0.06);
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.ai-conv-list__item.is-active {
    background: rgba(34, 211, 238, 0.1);
    color: var(--color-accent-soft);
    border-color: var(--color-border-accent);
}

.ai-chat {
    display: flex;
    flex-direction: column;
    min-height: 560px;
    padding: 0;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.ai-chat__messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    min-height: 400px;
    max-height: min(65vh, 640px);
    scroll-behavior: smooth;
}

.ai-message {
    display: flex;
    gap: var(--space-3);
    align-items: flex-end;
}

.ai-message--user {
    justify-content: flex-end;
}

.ai-message--assistant {
    justify-content: flex-start;
}

.ai-message__avatar {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
}

.ai-message--user .ai-message__avatar {
    background: var(--gradient-accent);
    color: var(--color-bg-primary);
    border: none;
    font-weight: 800;
    font-size: var(--font-size-xs);
}

.ai-message__bubble {
    max-width: min(85%, 640px);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

.ai-message--user .ai-message__bubble {
    background: rgba(34, 211, 238, 0.15);
    border: 1px solid var(--color-border-accent);
    color: var(--color-text-primary);
    border-bottom-right-radius: var(--radius-sm);
}

.ai-message--assistant .ai-message__bubble {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-bottom-left-radius: var(--radius-sm);
}

.ai-message--typing .ai-message__bubble {
    opacity: 0.7;
}

.ai-message--error .ai-message__bubble {
    border-color: rgba(248, 113, 113, 0.35);
    background: rgba(248, 113, 113, 0.08);
    color: var(--color-red);
}

.ai-chat__composer {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--color-border);
    align-items: flex-end;
    background: rgba(10, 16, 25, 0.5);
}

.ai-chat__composer textarea {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    color: var(--color-text-primary);
    resize: none;
    min-height: 48px;
    max-height: 160px;
    line-height: 1.5;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.ai-chat__composer textarea:focus {
    outline: none;
    border-color: var(--color-border-hover);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1);
}

.ai-chat__hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding: 0 var(--space-5) var(--space-3);
    background: rgba(10, 16, 25, 0.5);
}

.ai-chat__composer .btn[disabled] {
    opacity: 0.5;
    pointer-events: none;
}

.ai-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: 0 var(--space-6) var(--space-4);
}

.ai-suggestion {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ai-suggestion:hover {
    color: var(--color-accent-soft);
    border-color: var(--color-border-hover);
}

@media (max-width: 900px) {
    .ai-layout__grid {
        grid-template-columns: 1fr;
    }

    .ai-sidebar {
        position: static;
        max-height: none;
    }

    .ai-chat {
        min-height: 480px;
    }
}

@media (max-width: 768px) {
    .ai-credits-badge {
        width: 100%;
    }

    .ai-chat__messages {
        max-height: 50vh;
    }
}