:root {
    /* PaperMod Färgpalett (Ljust läge) */
    --theme: #ffffff;
    --entry: #ffffff;
    --primary: #212121;
    --secondary: #666;
    --tertiary: #f5f5f5;
    --content: #292929;
    --border: #e8e8e8;
    
    /* Chattanpassade variabler */
    --user-bg: #212121; 
    --user-text: #ffffff;
    --bot-bg: #f8f8f8;
    --accent: #212121;
}

/* 1. Grundlayout - Fixar scroll och höjd */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--tertiary);
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    height: 100svh; 
    overflow: hidden; /* Hindrar hela sidan från att scrolla */
    color: var(--content);
}

/* 2. Header - PaperMod Nav-stil */
#app-header {
    width: 100%;
    max-width: 600px;
    background: var(--theme);
    padding: 18px 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
    flex-shrink: 0;
}

.header-content h1 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.header-content p {
    margin: 2px 0 0 0;
    font-size: 0.85rem;
    color: var(--secondary);
}

#info-btn {
    width: 26px;
    height: 26px;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--tertiary);
    color: var(--primary);
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 3. Chatt-behållaren */
#chat-container {
    width: 100%;
    max-width: 600px;
    background: var(--theme);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0; /* Möjliggör inre scroll */
    position: relative;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
}

#chat-window {
    flex: 1;
    overflow-y: auto;
    padding: 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    scroll-behavior: smooth;
}

/* 4. Meddelandebubblor */
.message {
    max-width: 85%;
    padding: 12px 18px;
    font-size: 16px;
    line-height: 1.6;
    word-wrap: break-word;
}

.message.user {
    align-self: flex-end;
    background: var(--user-bg);
    color: var(--user-text);
    border-radius: 8px 8px 2px 8px;
}

.message.bot {
    align-self: flex-start;
    background: var(--bot-bg);
    color: var(--content);
    border: 1px solid var(--border);
    border-radius: 8px 8px 8px 2px;
}

.message.system {
    align-self: center;
    font-size: 12px;
    color: var(--secondary);
    background: var(--tertiary);
    padding: 5px 15px;
    border-radius: 4px;
    margin: 15px 0;
}

/* 5. Input Area - Fastklistrad i botten */
#input-area {
    width: 100%;
    background: var(--theme);
    padding: 20px;
    display: flex;
    gap: 12px;
    border-top: 1px solid var(--border);
    box-sizing: border-box;
    flex-shrink: 0;
}

#user-input {
    flex: 1;
    padding: 12px 15px;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--tertiary);
    font-size: 16px;
    outline: none;
    color: var(--primary);
}

#user-input:focus {
    border-color: var(--secondary);
}

#send-btn {
    background: var(--primary);
    color: var(--theme);
    border: none;
    padding: 0 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

/* 6. Modal / Popup - FIXAD för att alltid ligga ovanpå */
.modal-overlay {
    display: none; /* Dold vid start */
    position: fixed; /* Låst till fönstret */
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6); 
    z-index: 9999; /* Alltid överst */
    align-items: center;
    justify-content: center;
}

/* Säkerställer att JS-aktivering (display: flex) fungerar */
.modal-overlay[style*="display: flex"] {
    display: flex !important;
}

.modal-content {
    background: var(--theme);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border);
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    color: var(--primary);
}

.modal-content h2 { margin-top: 0; font-size: 1.4rem; }
.modal-close-btn {
    margin-top: 20px;
    width: 100%;
    background: var(--primary);
    color: var(--theme);
    border: none;
    padding: 12px;
    border-radius: 4px;
    cursor: pointer;
}

/* 7. Skriver... Animation */
#typing::after {
    content: '...';
    display: inline-block;
    width: 20px;
    animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* 8. Responsivitet */
@media (max-width: 600px) {
    #chat-container {
        border-left: none;
        border-right: none;
        max-width: 100%;
    }
    .message { max-width: 90%; }
}