/* ================================
   VISTA INICIAL (Perplexity-style)
   ================================ */

/* Contenedor principal del estado inicial */
.initial-state {
    display: flex;
    flex-direction: column;
    height: 100vh;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    position: relative;
    z-index: 1;
    opacity: 1;
    transition: var(--transition-fade);
}

.initial-state.hide {
    opacity: 0;
}

/* Logo del estado inicial */
.logo {
    margin-bottom: var(--spacing-12);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
}

.logo-image {
    max-width: 320px;
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 0;
}

.logo h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-align: center;
}

/* Contenedor del input principal */
.main-input-container {
    width: 100%;
    max-width: var(--max-width-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Input grande del estado inicial */
.input-wrapper-large {
    width: 100%;
    position: relative;
    background: var(--color-surface-secondary);
    border: 1px solid var(--color-border-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.input-wrapper-large:focus-within {
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-focus);
}

#messageInputLarge {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    font-family: inherit;
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
    min-height: var(--input-height-base);
    max-height: var(--textarea-max-height);
    padding: var(--spacing-2) 0;
    color: var(--color-text-primary);
    background: transparent;
}

#messageInputLarge::placeholder {
    color: var(--color-text-placeholder);
}

/* Botón de envío del estado inicial */
.send-btn-large {
    background: var(--color-primary);
    color: var(--color-surface-primary);
    border: none;
    border-radius: var(--radius-lg);
    width: var(--button-height-lg);
    height: var(--button-height-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    flex-shrink: 0;
    font-size: var(--font-size-base);
}

.send-btn-large:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
}

.send-btn-large:active {
    transform: scale(0.95);
}

.send-btn-large:disabled {
    background: var(--color-text-disabled);
    cursor: not-allowed;
    transform: none;
}

/* Responsive para estado inicial */
@media (max-width: 768px) {
    .initial-state {
        padding: var(--spacing-4);
    }
    
    .logo h1 {
        font-size: var(--font-size-2xl);
    }
}