:root {
    --main-font: "Ubuntu", sans-serif;
    --bg-color: rgb(199, 210, 218);
    --chat-bg: #ffffff;
    --header-gradient1: rgb(30, 165, 255);
    --header-gradient2: rgb(30, 165, 255);
    --header-gradient3: rgb(30, 165, 255);
    --bot-bg: rgb(2, 136, 209 );
    --background-color: rgb(30, 165, 255);
    --bot-text: #fff;
    --user-bg: hsl(185, 97%, 60%);
    --user-text: #111;
    --accent-color: hsl(24, 100%, 50%);
}

/* Base general */
body {
    background: rgb(2, 136, 209 ) !important;
    font-family: var(--main-font);
    margin: 0;
    padding: 30px 20px 220px; /* space for footer */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
    flex-direction: column;

    overflow: hidden;  
    position: fixed;
    width: 100vw;      /* asegura que cubra todo el ancho */
    height: 100vh; 
}

/* Footer fixed at bottom */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px 20px;
    background: #cfcfcf;
    color: #000000;
    font-family: "Inter", sans-serif;
    border-top: 1px solid #b9b9b9;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
    gap: 30px;
    z-index: 999;
    font-weight: bold;

    
}

/* Contenedor principal */
.container {
    width: 500px;
    max-width: 95%;
    margin: 0 auto;
    background: var(--chat-bg);
    border-radius: 15px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    /*overflow: hidden;*/
}

/* Header wrapper */
.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--header-gradient1), var(--header-gradient2));
    padding: 15px 20px;
    border-radius: 15px 15px 0 0;
}

/* Encabezado superior */
h2 {
    text-align: center;
    color: white;
    margin: 0;
    font-size: 2rem;
    letter-spacing: 0.5px;
    flex-grow: 1;
}

/* Botones */
.top-btn {
    padding: 8px 18px;
    border-radius: 8px;
    border: 2px solid white;
    background: rgb(30, 165, 255);
    color: white;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.95rem;
    transition: 0.25s ease;
}

.top-btn:hover {
    background: white;
    color: var(--header-gradient1);
}

/* Logo */
.evana-logo {
    display: block;
    margin: 20px auto 0 auto;
}

/* Mensaje de bienvenida */
.welcome-message {
    text-align: center;
    margin: 25px auto;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
}

.welcome-message p {
    font-size: 1.5rem;
    color: var(--header-gradient1);
    line-height: 1.6;
    margin: 0;
    font-weight: 550;
}

/* Área del chat */
.chat-box {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: var(--chat-bg);
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-height: 400px;
}

/* Mensajes */
.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    font-size: 0.95rem;
    line-height: 1.4;
    position: relative;
    animation: fadeIn 0.3s ease;
}

.bot {
    align-self: flex-start;
    background: var(--bot-bg);
    color: var(--bot-text);
    border-bottom-left-radius: 5px;
}

.user {
    align-self: flex-end;
    background: var(--user-bg);
    color: var(--user-text);
    border-bottom-right-radius: 5px;
    text-align: right;
}

/* Scrollbar */
.chat-box::-webkit-scrollbar {
    width: 8px;
}
.chat-box::-webkit-scrollbar-thumb {
    background: hsl(186, 46%, 60%);
    border-radius: 10px;
}
.chat-box::-webkit-scrollbar-track {
    background: transparent;
}

/* Área de entrada */
.input-area {
    border-radius: 10px;
    display: flex;
    align-items: center;
    border-top: 1px solid hsl(186, 30%, 90%);
    background: hsl(0, 0%, 99%);
    padding: 10px 15px;
    gap: 10px;
    
}

/* Campo de texto */
#msgInput {
    flex: 1;
    max-height: fit-content;
    padding: 10px 14px;
    border: 3px solid hsl(186, 30%, 55%);
    border-radius: 25px;
    font-size: 0.95rem;
    outline: none;
    transition: border 0.2s, box-shadow 0.2s;
}

#msgInput:focus {
    border-color: var(--header-gradient1);
    box-shadow: 0 0 0 2hsla(186, 50%, 40%, 0.2);
}

/* Botón de envío */
#sendBtn {
    background: linear-gradient(135deg, var(--header-gradient1), var(--header-gradient2));
    border: none;
    color: white;
    padding: 10px 16px;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s, transform 0.1s;
}
#sendBtn:hover {
    background: white;
    color: var(--header-gradient1);
    transition: 0.25s ease;
}
#sendBtn:active {
    transform: scale(0.97);
}

.config-btn {
    background: #1e90ff;
    color: white;
    border: none;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s ease, transform 0.1s ease;
    margin-right: 10px;
}

.config-btn:hover {
    background: #1874d1;
}

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

#config-floating {
    position: absolute;
    top: 12px;
    right: 12px;
}


/* KPIs */
.kpi-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 25px;
    padding: 10px 15px;
}
.kpi-card {
    background: #fff;
    padding: 15px 20px;
    border-radius: 25px;
    border: 1px solid var(--header-gradient1);
    text-align: center;
    font-size: 16px;
    font-weight: bold;
    color: var(--header-gradient1);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* Animación */
@keyframes fadeIn {
    from {opacity: 0; transform: translateY(5px);}
    to {opacity: 1; transform: translateY(0);}
}

.welcome-message p {
    font-size: 1.5rem;
    color: var(--header-gradient1);
    line-height: 1.6;
    margin: 0;
    font-weight: 550;
    transition: opacity 1s ease;
}

.welcome-message p.fade-out {
    opacity: 0;
}