/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

/* Variables de color */
:root {
    --black-rgb: 0, 0, 0;
}

/* Scroll personalizado (Firefox) */
body {
    scrollbar-color: rgba(var(--black-rgb), .2) transparent;
}

/* Scroll personalizado (Webkit: Chrome, Safari, Edge) */
body::-webkit-scrollbar {
    width: 8px;
}

body::-webkit-scrollbar-thumb {
    background-color: rgba(var(--black-rgb), .2);
    border-radius: 4px;
}

body::-webkit-scrollbar-track {
    background-color: transparent;
}

/* Layout principal */
.container {
    display: flex;
    height: 100vh;
}

/* Barra lateral */
.sidebar {
    width: 30%;
    border-right: 1px solid #ddd;
    display: flex;
    flex-direction: column;
}

.menu {
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

.search {
    padding: 10px;
}

.search input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

/* Lista de chats */
.chats {
    flex-grow: 1;
    overflow-y: auto;
    list-style: none;
    padding: 0;
}

.chat-item {
    display: flex;
    flex-direction: column;
    padding: 10px;
    border-bottom: 1px solid #ddd;
    cursor: pointer;
}

.chat-item:hover {
    background: #f0f0f0;
}

.chat-item .name {
    font-weight: bold;
}

.chat-item .last-message {
    color: gray;
    font-size: 12px;
}

.chat-item .time {
    align-self: flex-end;
    font-size: 12px;
    color: gray;
}

/* Sección de chat */
.chat-window {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    
    /* Fondo con degradado y patrón SVG */
    background: linear-gradient(135deg, #cfd9df, #7c98b3);
    background-image: url('https://anesstore.neocities.org/Huma/pattern.svg'), 
                      linear-gradient(135deg, #cfd9df, #7c98b3);
    background-repeat: repeat;
    background-size: 350px, cover;
    background-blend-mode: soft-light;
}

/* Mensajes */
.messages {
    flex-grow: 1;
    padding: 10px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Burbuja de mensaje */
.message {
    padding: 10px 14px;
    margin: 5px 0;
    border-radius: 15px;
    max-width: 60%;
    position: relative;
}

/* Mensaje recibido */
.received {
    align-self: flex-start;
    background: #ffffff;
    border-radius: 15px 15px 15px 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Mensaje enviado */
.sent {
    align-self: flex-end;
    background: #d3f8d3;
    border-radius: 15px 15px 5px 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Cola decorativa en los mensajes */
.message::after {
    content: "";
    position: absolute;
    width: 11px;
    height: 20px;
    bottom: -2px;
    background-size: contain;
    background-repeat: no-repeat;
}

/* Posicionamiento de la cola en mensajes recibidos */
.received::after {
    left: -6px;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 11 20" width="11" height="20" xmlns="http://www.w3.org/2000/svg"><use href="#message-tail-filled"/></svg>');
}

/* Posicionamiento de la cola en mensajes enviados */
.sent::after {
    right: -6px;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 11 20" width="11" height="20" xmlns="http://www.w3.org/2000/svg"><use href="#message-tail-filled"/></svg>');
    transform: scaleX(-1);
}

/* Input de mensajes */
.message-input {
    display: flex;
    padding: 10px;
    background: #f9f9f9;
    border-top: 1px solid #ddd;
}

.message-input input {
    background-color: #fff;
    border-radius: 25px;
    padding: 12px 16px;
    border: 1px solid #ccc;
    width: 100%;
    max-width: 60rem;
    outline: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    font-size: 14px;
}

/* Botón de enviar */
#send-button {
    background-color: #3390ec;
    color: white;
    border: none;
    border-radius: 50%;
    padding: 12px;
    font-size: 18px;
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 1px 8px 1px rgba(0, 0, 0, 0.1);
    margin-left: 10px;
    transition: background 0.3s ease-in-out;
}

#send-button:hover {
    background-color: #2086ea;
}

#send-button:focus {
    outline: none;
}

#send-button svg {
    width: 20px;
    height: 20px;
}