/* style.css - Brightened Ghostly Theme */

:root {
    --primary-color: #ba3f1f;
    --secondary-color: #F2CC8F;
    --background-color: #121212;
    --text-color: #F4F1DE;
    --ghost-glow-color: #5fbde033;
    --input-background: rgba(45, 45, 45, 0.6);
    --control-background: rgba(55, 55, 55, 0.4);
    --message-user-bg: rgba(75, 80, 110, 0.5);
    --message-bot-bg: rgba(55, 55, 55, 0.4);
    --border-color: rgba(75, 80, 110, 0.2);
    --message-fade-color: rgba(24, 24, 24, 0.0);
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h2 {
    font-family: 'Roboto Slab', serif;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    font-size: 5.5em;
    opacity: 0.9;
    background: linear-gradient(90deg, #ff3500, var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s ease;
    opacity: 0.8;
}

a:hover {
    color: var(--secondary-color);
    opacity: 1;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background-image: linear-gradient(to bottom, #1A1A1A 0%, #282828 100%);
    box-shadow: 0 0 20px var(--ghost-glow-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-container {
    flex: 0 0 auto;
}

.logo {
    font-family: 'Roboto Slab', serif;
    font-size: 1.8em;
    font-weight: 700;
    background: linear-gradient(90deg, #ff3500, var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.9;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    opacity: 0.8;
    transition: color 0.3s ease, opacity 0.3s ease;
}

.nav-links a:hover {
    color: var(--secondary-color);
    opacity: 1;
}

.chatbot-container.ghostly-theme {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px var(--ghost-glow-color);
    background-image: linear-gradient(to bottom, #1A1A1A 0%, #282828 100%);
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 15px;
}

.chat-input-area {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 15px;
    background-color: var(--input-background);
    border-radius: 8px;
    border: none;
}

.provider-selector {
    display: flex;
    gap: 15px;
    align-items: center;
}

.provider-selector label {
    color: var(--text-color);
    font-weight: 600;
    opacity: 0.8;
    align-self: normal;
    padding-left: 10px;
}

.provider-selector select {
    background-color: var(--control-background);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    padding: 8px;
    font-size: 1em;
    opacity: 0.9;
}

.provider-selector input[type="checkbox"] {
    margin-left: 10px;
    accent-color: var(--primary-color);
    opacity: 0.9;
}

.chat-input-area textarea {
    flex-grow: 1;
    background-color: var(--control-background);
    border: none;
    border-radius: 5px;
    color: var(--text-color);
    padding: 12px;
    font-size: 1em;
    resize: vertical;
    min-height: 40px;
    max-height: 120px;
    opacity: 0.9;
}

.chat-input-area button {
    background-color: var(--primary-color);
    color: var(--text-color);
    padding: 10px 18px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-weight: 600;
    opacity: 0.9;
    background-image: radial-gradient(ellipse at center, var(--message-fade-color) 50%, var(--border-color) 100%);
}

.chat-input-area button:hover {
    background-color: #C66147;
    opacity: 1;
}

.ghost-chat-window {
    background-color: transparent;
    border: none;
    padding: 0;
    max-height: 500px;
    overflow-y: auto;
}

.pinned-message-container {
    background-color: transparent;
    padding-bottom: 5px;
    margin-bottom: 5px;
    border-bottom: 1px dashed var(--border-color);
    opacity: 0.9;
    display: none;
}

.pinned-message .sender {
    font-weight: 600;
    color: var(--primary-color);
    opacity: 0.8;
}

.pinned-message .message-content {
    padding: 8px 12px;
    border-radius: 10px;
    word-wrap: break-word;
    background-color: var(--message-user-bg);
    color: var(--text-color);
    opacity: 1;
    background-image: radial-gradient(ellipse at center, var(--message-user-bg) 70%, var(--message-fade-color) 100%);
}

#chat-history {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-entry {
    margin-bottom: 6px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.chat-entry .sender {
    font-weight: 600;
    color: var(--primary-color);
    opacity: 0.8;
}

.chat-entry .message-content {
    padding: 8px 12px;
    border-radius: 10px;
    word-wrap: break-word;
    opacity: 1;
}

.user-message .message-content {
    background-color: var(--message-user-bg);
    color: var(--text-color);
    align-self: flex-end;
    margin-left: 20%;
    background-image: radial-gradient(ellipse at center, var(--message-user-bg) 70%, var(--message-fade-color) 100%);
}

.bot-message .message-content {
    background-color: var(--message-bot-bg);
    color: var(--text-color);
    background-image: radial-gradient(ellipse at center, var(--message-bot-bg) 70%, var(--message-fade-color) 100%);
}

.message-content p { margin: 0 0 6px 0; opacity: inherit; }
.message-content strong { font-weight: 700; color: var(--secondary-color); opacity: inherit; }
.message-content em { font-style: italic; opacity: inherit; }
.message-content code { background-color: rgba(40, 40, 40, 0.6); color: var(--secondary-color); opacity: inherit; text-wrap: auto; }
.message-content pre { background-color: rgba(40, 40, 40, 0.6); color: var(--secondary-color); opacity: inherit; }
.message-content ul, .message-content ol { margin: 6px 0 6px 20px; padding-left: 10px; opacity: inherit; }
.message-content li { margin-bottom: 3px; opacity: inherit; }

.container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    border-radius: 10px;
    background-image: linear-gradient(to bottom, #1A1A1A 0%, #282828 100%);
    box-shadow: 0 0 20px var(--ghost-glow-color);
}

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.login-container h1 {
    font-family: 'Roboto Slab', serif;
    font-size: 2.5em;
    background: linear-gradient(90deg, #ff3500, var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
    opacity: 0.9;
}

.login-container form {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 10px;
}

.login-container input {
    background-color: var(--control-background);
    border: none;
    border-radius: 5px;
    padding: 10px;
    color: var(--text-color);
    font-size: 1em;
    opacity: 0.9;
}

.login-container input::placeholder {
    color: rgba(244, 241, 222, 0.6);
}

.login-container button {
    background-color: var(--primary-color);
    color: var(--text-color);
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    opacity: 0.9;
    transition: background-color 0.3s ease;
}

.login-container button:hover {
    background-color: #C66147;
    opacity: 1;
}

.login-container .error {
    color: #ff3500;
    font-size: 0.9em;
    margin: 0;
    text-align: center;
}

.login-container .signup-link {
    font-size: 0.9em;
    opacity: 0.8;
}

.login-container .signup-link a {
    color: var(--secondary-color);
    font-weight: 600;
}

.button-group {
    display: flex;
    gap: 10px;
}

.chat-input-area button#clear-button {
    background-color: #555;
    color: var(--text-color);
    padding: 10px 18px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-weight: 600;
    opacity: 0.9;
}

.chat-input-area button#clear-button:hover {
    background-color: #777;
    opacity: 1;
}

@media (max-width: 768px) {
    .chatbot-container.ghostly-theme {
        margin: 15px;
        padding: 15px;
    }

    .chat-input-area {
        flex-direction: column;
        gap: 8px;
        padding: 10px;
    }

    .provider-selector {
        flex-direction: column;
        width: 100%;
        gap: 5px;
    }

    .provider-selector label {
        margin-bottom: 2px;
    }

    .provider-selector select {
        width: 100%;
        padding: 6px;
    }

    .chat-input-area textarea {
        padding: 10px;
        min-height: 60px;
        max-height: 100px;
    }

    .chat-input-area button {
        padding: 8px 15px;
    }

    .user-message .message-content, .bot-message .message-content {
        margin-left: 0;
        margin-right: 0;
    }

    header {
        padding: 10px 20px;
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-links {
        margin-top: 10px;
        gap: 15px;
    }

    .container {
        margin: 20px auto;
        padding: 15px;
    }

    .login-container h1 {
        font-size: 2em;
    }
}

.ghost-chat-window::-webkit-scrollbar { width: 4px; }
.ghost-chat-window::-webkit-scrollbar-track { background: transparent; }
.ghost-chat-window::-webkit-scrollbar-thumb { background: var(--ghost-glow-color); border-radius: 2px; }
.ghost-chat-window::-webkit-scrollbar-thumb:hover { background: rgba(198, 97, 71, 0.4); }