/* ============================================================
   Hermosillo IA — Estilos Principales
   Estética: Civic Tech Desértico — Terracota + Azul Profundo + Arena
   ============================================================ */

:root {
    --color-bg:            #0D1B2A;
    --color-bg-2:          #13243A;
    --color-bg-3:          #1A304E;
    --color-surface:       #1E3A54;
    --color-border:        rgba(255,255,255,0.07);

    --color-accent:        #E8622A;
    --color-accent-hover:  #F07A42;
    --color-accent-glow:   rgba(232, 98, 42, 0.25);

    --color-sky:           #4DA3D9;
    --color-sky-dim:       rgba(77, 163, 217, 0.15);

    --color-sand:          #D4B896;
    --color-sand-dim:      rgba(212, 184, 150, 0.12);

    --color-text:          #EDF2F7;
    --color-text-muted:    #8FAEC4;
    --color-text-dim:      #526D82;

    --color-user-bubble:   #E8622A;
    --color-ai-bubble:     #1A304E;

    --color-success:       #3DD68C;
    --color-error:         #FF5C6B;
    --color-warning:       #FFB547;

    --font-display:        'Syne', sans-serif;
    --font-body:           'Lato', sans-serif;

    --sidebar-width:       272px;
    --header-height:       64px;
    --radius-sm:           8px;
    --radius-md:           14px;
    --radius-lg:           20px;
    --radius-xl:           28px;
    --radius-pill:         999px;

    --shadow-sm:    0 1px 3px rgba(0,0,0,0.15);
    --shadow-md:    0 4px 16px rgba(0,0,0,0.2);
    --shadow-lg:    0 8px 32px rgba(0,0,0,0.25);
    --shadow-glow:  0 0 20px var(--color-accent-glow);

    --transition-fast:   150ms ease;
    --transition-std:    280ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Tema claro (por defecto) ── */
[data-theme="light"] {
    --color-bg:         #F5F0EB;
    --color-bg-2:       #EDE5DC;
    --color-bg-3:       #FFFFFF;
    --color-surface:    #F8F3EE;
    --color-border:     rgba(0,0,0,0.10);

    --color-text:       #1C1C2E;
    --color-text-muted: #4A5568;
    --color-text-dim:   #8A9BAB;

    --color-ai-bubble:  #FFFFFF;
    --color-sky-dim:    rgba(77, 163, 217, 0.12);
    --color-sand-dim:   rgba(150, 100, 50, 0.07);

    --shadow-sm:    0 1px 3px rgba(0,0,0,0.08);
    --shadow-md:    0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg:    0 8px 32px rgba(0,0,0,0.14);
}

/* ── Reset & Base ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100dvh;
    display: flex;
    overflow: hidden;
    transition: background-color var(--transition-std), color var(--transition-std);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

ul { list-style: none; }
img { max-width: 100%; }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 2px;
    opacity: 0.5;
}


/* ══════════════════════════════════════════════════════
   SIDEBAR
══════════════════════════════════════════════════════ */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    height: 100dvh;
    background: var(--color-bg-2);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    padding: 18px 14px;
    gap: 18px;
    overflow-y: auto;
    transition: transform var(--transition-std), background-color var(--transition-std);
    z-index: 100;
    position: relative;
}

.sidebar::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-sky));
    opacity: 0.7;
}

/* Marca */
.sidebar__brand { padding: 0 4px; }

.sidebar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}

.sidebar__logo-icon {
    font-size: 2rem;
    line-height: 1;
    filter: drop-shadow(0 0 8px rgba(232,98,42,0.4));
    animation: cactus-pulse 3s ease-in-out infinite;
}

@keyframes cactus-pulse {
    0%, 100% { filter: drop-shadow(0 0 6px rgba(232,98,42,0.3)); }
    50%       { filter: drop-shadow(0 0 14px rgba(232,98,42,0.6)); }
}

.sidebar__logo-text {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.sidebar__logo-name {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.sidebar__logo-ia {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    padding: 1px 7px;
    border-radius: var(--radius-pill);
    letter-spacing: 0.05em;
}

.sidebar__tagline {
    font-size: 0.72rem;
    color: var(--color-text-dim);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding-left: 2px;
}

/* Títulos de sección */
.sidebar__nav-title {
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    padding: 0 4px;
}

/* ── Lista rápida compacta ── */
.sidebar__quick-list { display: flex; flex-direction: column; gap: 2px; }
.quick-access-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border-radius: var(--radius-sm); background: transparent; border: none; cursor: pointer; text-align: left; font-family: var(--font-body); color: var(--color-text-muted); transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); position: relative; }
.quick-access-item:hover { background: var(--color-surface); color: var(--color-text); transform: translateX(2px); }
.quick-access-item:active { transform: translateX(1px) scale(0.98); }
.quick-access-item--hot .quick-access-item__icon { filter: drop-shadow(0 0 4px rgba(255,92,107,0.5)); }
.quick-access-item--hot .quick-access-item__label { color: var(--color-error); }
.quick-access-item__icon { font-size: 1rem; flex-shrink: 0; width: 22px; text-align: center; line-height: 1; }
.quick-access-item__text { flex: 1; display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.quick-access-item__label { font-size: 0.82rem; font-weight: 700; color: var(--color-text); line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.quick-access-item__sub { font-size: 0.68rem; color: var(--color-text-dim); line-height: 1.2; }
.quick-access-item__arrow { font-size: 1rem; color: var(--color-text-dim); opacity: 0; transform: translateX(-4px); transition: opacity var(--transition-fast), transform var(--transition-fast); flex-shrink: 0; }
.quick-access-item:hover .quick-access-item__arrow { opacity: 1; transform: translateX(0); }

/* Nav del sidebar */
.sidebar__nav-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.quick-topic {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 12px;
    border-radius: var(--radius-md);
    font-size: 0.84rem;
    color: var(--color-text-muted);
    text-align: left;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    font-family: var(--font-body);
}

.quick-topic:hover {
    background: var(--color-surface);
    color: var(--color-text);
    transform: translateX(3px);
}

.quick-topic:active { transform: translateX(1px) scale(0.98); }

.quick-topic__icon {
    font-size: 1rem;
    flex-shrink: 0;
}

/* Zona patrocinador */
.sponsor-zone { margin-top: auto; }

.sponsor-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition-std);
    text-decoration: none;
    display: block;
}

.sponsor-card:hover { box-shadow: var(--shadow-md); }

.sponsor-card__label {
    font-size: 0.62rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 6px 10px 2px;
    background: var(--color-bg-3);
}

.sponsor-card__img {
    width: 100%;
    height: 60px;
    object-fit: cover;
    display: block;
}

.sponsor-card__name {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 10px;
    background: var(--color-bg-3);
    color: var(--color-text-muted);
}

/* Footer sidebar */
.sidebar__footer {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
}

.btn-install-app {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    background: var(--color-accent);
    border: none;
    transition: background var(--transition-fast), transform var(--transition-bounce), box-shadow var(--transition-fast);
    box-shadow: 0 2px 8px var(--color-accent-glow);
    margin-bottom: 6px;
}

.btn-install-app:hover {
    background: var(--color-accent-hover);
    transform: scale(1.02);
    box-shadow: 0 4px 12px var(--color-accent-glow);
}

.btn-install-app:active { transform: scale(0.96); }

.btn-install-app {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    background: var(--color-accent);
    border: none;
    transition: background var(--transition-fast), transform var(--transition-bounce), box-shadow var(--transition-fast);
    box-shadow: 0 2px 8px var(--color-accent-glow);
    margin-bottom: 6px;
}
.btn-install-app:hover { background: var(--color-accent-hover); transform: scale(1.02); box-shadow: 0 4px 12px var(--color-accent-glow); }
.btn-install-app:active { transform: scale(0.96); }
.btn-install-app[hidden] { display: none !important; }

.btn-clear-chat {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 9px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid var(--color-border);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    font-family: var(--font-body);
}

.btn-clear-chat:hover {
    background: rgba(255, 92, 107, 0.1);
    border-color: var(--color-error);
    color: var(--color-error);
}

.sidebar__disclaimer {
    font-size: 0.67rem;
    color: var(--color-text-dim);
    text-align: center;
    line-height: 1.5;
}


/* ══════════════════════════════════════════════════════
   ÁREA PRINCIPAL DEL CHAT
══════════════════════════════════════════════════════ */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100dvh;
    overflow: hidden;
    position: relative;
}

.chat-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    z-index: 10;
    transition: background-color var(--transition-std);
}

.chat-header__info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.chat-header__avatar {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--color-accent), #C94F1A);
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 0 0 2px var(--color-accent-glow);
    flex-shrink: 0;
}

.chat-header__title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.chat-header__status {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.status-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(61, 214, 140, 0.4); }
    50%       { box-shadow: 0 0 0 4px rgba(61, 214, 140, 0); }
}

.chat-header__actions { display: flex; gap: 4px; }


/* ── Zona de mensajes ── */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
    background:
        radial-gradient(ellipse at 30% 0%, var(--color-sky-dim) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, var(--color-sand-dim) 0%, transparent 60%),
        var(--color-bg);
    transition: background var(--transition-std);
}


/* ── Pantalla de Bienvenida ── */
.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 300px;
    text-align: center;
    gap: 12px;
    animation: fade-in-up 0.6s ease both;
}

.welcome-screen__icon {
    font-size: 4rem;
    line-height: 1;
    filter: drop-shadow(0 0 20px rgba(232, 98, 42, 0.5));
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-10px); }
}

.welcome-screen__title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.welcome-screen__subtitle {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    max-width: 380px;
    line-height: 1.6;
}

.welcome-screen__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 8px;
}

.chip {
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    font-size: 0.82rem;
    color: var(--color-text-muted);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-bounce);
    font-family: var(--font-body);
}

.chip:hover {
    background: var(--color-accent-glow);
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.chip:active { transform: translateY(0) scale(0.97); }


/* ── Burbujas de mensajes ── */
.message {
    display: flex;
    flex-direction: column;
    max-width: min(75%, 620px);
    animation: fade-in-up 0.35s ease both;
}

.message--user {
    align-self: flex-end;
    align-items: flex-end;
}

.message--ai {
    align-self: flex-start;
    align-items: flex-start;
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.message__header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
    padding: 0 4px;
}

.message__avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.message__sender {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.message__time {
    font-size: 0.67rem;
    color: var(--color-text-dim);
}

.message__bubble {
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    font-size: 0.92rem;
    line-height: 1.65;
    word-break: break-word;
    transition: background var(--transition-std);
}

.message--user .message__bubble {
    background: linear-gradient(135deg, var(--color-accent), #C94F1A);
    color: #FFF;
    border-bottom-right-radius: 4px;
    box-shadow: 0 2px 12px var(--color-accent-glow);
}

.message--ai .message__bubble {
    background: var(--color-ai-bubble);
    color: var(--color-text);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--color-border);
}

/* Markdown en bubble de IA — con buen contraste en modo claro */
.message--ai .message__bubble strong {
    color: var(--color-sky);
    font-weight: 700;
}

[data-theme="light"] .message--ai .message__bubble strong {
    color: #1565A8;
}

.message--ai .message__bubble em { color: var(--color-sand); }

[data-theme="light"] .message--ai .message__bubble em { color: #7A5C3A; }

.message--ai .message__bubble a {
    color: var(--color-accent);
    text-decoration: underline;
}

.message--ai .message__bubble ul,
.message--ai .message__bubble ol {
    padding-left: 1.2em;
    margin: 6px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.message--ai .message__bubble li { font-size: 0.9rem; }

.message--ai .message__bubble h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--color-sky);
}

[data-theme="light"] .message--ai .message__bubble h3 { color: #1565A8; }

.message--ai .message__bubble p + p { margin-top: 8px; }

.message--ai .message__bubble hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 10px 0;
}

.message--ai .message__bubble code {
    background: rgba(0,0,0,0.08);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 0.85em;
    font-family: 'Courier New', monospace;
}

[data-theme="light"] .message--ai .message__bubble code {
    background: rgba(0,0,0,0.06);
    color: #C0392B;
}

.message__image {
    max-width: 240px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    border: 2px solid var(--color-border);
    display: block;
}

.source-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
    padding: 3px 10px;
    background: var(--color-sky-dim);
    border: 1px solid rgba(77, 163, 217, 0.3);
    border-radius: var(--radius-pill);
    font-size: 0.68rem;
    color: var(--color-sky);
    font-weight: 700;
    letter-spacing: 0.04em;
}

[data-theme="light"] .source-badge { color: #1565A8; }


/* ── Indicador Escribiendo ── */
.typing-indicator {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    flex-shrink: 0;
}

.typing-indicator__avatar {
    width: 28px;
    height: 28px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.typing-indicator__bubbles {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--color-ai-bubble);
    border: 1px solid var(--color-border);
    padding: 10px 14px;
    border-radius: var(--radius-lg);
    border-bottom-left-radius: 4px;
}

.typing-dot {
    width: 7px;
    height: 7px;
    background: var(--color-text-muted);
    border-radius: 50%;
    animation: bounce-dot 1.2s ease-in-out infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce-dot {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
    40%            { transform: translateY(-6px); opacity: 1; }
}

.typing-indicator__text {
    font-size: 0.75rem;
    color: var(--color-text-dim);
}


/* ── Preview imagen adjunta ── */
.image-preview {
    padding: 10px 16px 0;
    flex-shrink: 0;
}

.image-preview__inner {
    position: relative;
    display: inline-block;
}

.image-preview__img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 2px solid var(--color-accent);
}

.image-preview__remove {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 20px;
    height: 20px;
    background: var(--color-error);
    color: #fff;
    border-radius: 50%;
    font-size: 0.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.image-preview__remove:hover {
    background: #cc3344;
    transform: scale(1.1);
}

.image-preview__label {
    font-size: 0.7rem;
    color: var(--color-text-dim);
    margin-top: 4px;
}


/* ── Barra de entrada ── */
.chat-input-area {
    padding: 12px 16px 14px;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
    transition: background-color var(--transition-std);
}

.chat-input-bar {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--color-bg-3);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 8px 8px 8px 12px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-std);
}

.chat-input-bar:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.chat-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.92rem;
    line-height: 1.5;
    resize: none;
    max-height: 140px;
    min-height: 24px;
    padding: 3px 0;
    overflow-y: auto;
}

.chat-input::placeholder { color: var(--color-text-dim); }

.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    flex-shrink: 0;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-bounce);
}

.btn-icon:hover {
    background: var(--color-surface);
    color: var(--color-text);
    transform: scale(1.08);
}

.btn-icon:active { transform: scale(0.94); }

.btn-mic.is-recording {
    background: rgba(255, 92, 107, 0.18) !important;
    color: var(--color-error) !important;
    animation: mic-pulse 1.2s ease-in-out infinite;
}

@keyframes mic-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 92, 107, 0.35); }
    50%       { box-shadow: 0 0 0 8px rgba(255, 92, 107, 0); }
}

.btn-send {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-pill);
    background: var(--color-accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--transition-fast), transform var(--transition-bounce), box-shadow var(--transition-fast), opacity var(--transition-fast);
    box-shadow: 0 2px 8px var(--color-accent-glow);
}

.btn-send:hover:not(:disabled) {
    background: var(--color-accent-hover);
    transform: scale(1.08);
    box-shadow: 0 4px 16px var(--color-accent-glow);
}

.btn-send:active:not(:disabled) { transform: scale(0.94); }

.btn-send:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    box-shadow: none;
}

.chat-input-area__hint {
    font-size: 0.66rem;
    color: var(--color-text-dim);
    text-align: center;
    margin-top: 8px;
    line-height: 1.4;
}

/* Botón menú mobile */
.btn-menu {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4.5px;
    width: 36px;
    height: 36px;
    padding: 6px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: background var(--transition-fast);
}

.btn-menu:hover { background: var(--color-surface); }

.btn-menu__bar {
    height: 2px;
    border-radius: 2px;
    background: var(--color-text-muted);
    transition: transform var(--transition-std), opacity var(--transition-std);
    display: block;
    width: 100%;
}

.btn-menu.is-open .btn-menu__bar:nth-child(1) { transform: rotate(45deg) translateY(6.5px); }
.btn-menu.is-open .btn-menu__bar:nth-child(2) { opacity: 0; }
.btn-menu.is-open .btn-menu__bar:nth-child(3) { transform: rotate(-45deg) translateY(-6.5px); }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 90;
    backdrop-filter: blur(2px);
    animation: fade-in 0.2s ease;
}

.sidebar-overlay.is-visible { display: block; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }


/* ── Toast ── */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--color-bg-3);
    color: var(--color-text);
    padding: 10px 20px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 1000;
    white-space: nowrap;
}

.toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast--success { border-color: var(--color-success); color: var(--color-success); }
.toast--error   { border-color: var(--color-error);   color: var(--color-error); }
.toast--info    { border-color: var(--color-sky);     color: var(--color-sky); }

[data-theme="light"] .toast--info { color: #1565A8; border-color: #1565A8; }


/* ── Mensaje de error ── */
.message--error .message__bubble {
    background: rgba(255, 92, 107, 0.1);
    border-color: var(--color-error);
    color: var(--color-error);
}


/* ── Keywords / chips sugeridos ── */
.chip-keyword {
    background: var(--color-sky-dim);
    color: var(--color-sky);
    border: 1px solid var(--color-sky);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
    font-size: 0.85em;
    font-weight: 600;
    cursor: pointer;
    margin: 4px 2px;
    display: inline-block;
    transition: all var(--transition-fast);
}

.chip-keyword:hover {
    background: var(--color-sky);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

[data-theme="light"] .chip-keyword {
    color: #1565A8;
    border-color: #1565A8;
    background: rgba(77, 163, 217, 0.1);
}

[data-theme="light"] .chip-keyword:hover {
    background: #1565A8;
    color: white;
}

.chip-keyword:active { transform: translateY(0); }


/* ══════════════════════════════════════════════════════
   RESPONSIVE — MOBILE
══════════════════════════════════════════════════════ */
/* ── Banner Flotante PWA ── */
.install-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--color-surface) 60%, rgba(232,98,42,0.08));
    border-bottom: 2px solid var(--color-accent);
    border-left: 4px solid var(--color-accent);
    padding: 10px 16px;
    animation: slide-down 0.5s ease-out forwards;
    z-index: 20;
    box-shadow: 0 4px 18px rgba(232,98,42,0.18);
    gap: 10px;
}
.install-banner[hidden] { display: none !important; }
.install-banner__phone-icon { flex-shrink: 0; filter: drop-shadow(0 2px 6px rgba(232,98,42,0.35)); }
.install-banner__content { display: flex; align-items: center; gap: 12px; flex: 1; }
.install-banner__content strong { color: var(--color-text); font-size: 0.92rem; display: block; }
.install-banner__content p { color: var(--color-text-dim); font-size: 0.74rem; line-height: 1.3; margin-top: 3px; }
.install-banner__actions { display: flex; align-items: center; gap: 8px; }
.btn-install-banner {
    background: var(--color-accent);
    color: #fff;
    border: none;
    padding: 7px 16px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 2px 10px rgba(232,98,42,0.4);
    white-space: nowrap;
}
.btn-install-banner:hover { box-shadow: 0 4px 16px rgba(232,98,42,0.55); transform: translateY(-1px); }
.btn-install-banner:active { transform: scale(0.95); }
.btn-close-banner {
    background: transparent;
    color: var(--color-text-dim);
    border: none;
    font-size: 1.1rem;
    padding: 4px 8px;
    cursor: pointer;
}
@keyframes slide-down {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100dvh;
        transform: translateX(-100%);
        box-shadow: var(--shadow-lg);
    }

    .sidebar.is-open { transform: translateX(0); }

    .btn-menu { display: flex; }

    .chat-main { width: 100%; }

    .message { max-width: 88%; }

    .welcome-screen__title { font-size: 1.4rem; }

    .welcome-screen__chips {
        flex-direction: column;
        align-items: center;
    }

    .chat-messages {
        padding: 14px 12px;
        gap: 12px;
    }

    .chat-input-area { padding: 10px 12px 12px; }

}

@media (max-width: 400px) {
    .chat-header__title { font-size: 0.9rem; }
    .chat-header__status { display: none; }
}

/* Animaciones escalonadas de bienvenida */
.welcome-screen__icon     { animation-delay: 0s; }
.welcome-screen__title    { animation: fade-in-up 0.6s 0.1s ease both; }
.welcome-screen__subtitle { animation: fade-in-up 0.6s 0.2s ease both; }
.welcome-screen__chips    { animation: fade-in-up 0.6s 0.3s ease both; }

/* Accesibilidad */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}
/* ── Footer Legal ── */
.chat-legal-footer { font-size: 0.60rem; color: var(--color-text-dim); text-align: center; margin-top: 4px; line-height: 1.5; opacity: 0.75; }
.chat-legal-footer a { color: var(--color-accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color var(--transition-fast), opacity var(--transition-fast); }
.chat-legal-footer a:hover { border-bottom-color: var(--color-accent); opacity: 1; }