/* --- General Setup & Variables --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap');

:root {
    --background-color: #0a0a0a;
    --chat-bg: #121212;
    --text-color: #e0e0e0;
    --text-color-secondary: #a0a0a0;
    --input-bg: #1e1e1e;
    --border-color: #2a2a2a;
    --accent-color: #00aaff;
    --accent-glow: rgba(0, 170, 255, 0.4);
    --user-message-bg: #007acc;
    --bot-message-bg: #2a2a2a;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    overflow: hidden;
}

/* --- Layout --- */
.chat-page-wrapper {
    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
}

.chat-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding-top: 73px;
    overflow: hidden;
}

.messages-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px 15px;
    display: flex;
    flex-direction: column;
}

.input-area {
    padding: 1rem;
    background: linear-gradient(to top, var(--chat-bg) 70%, transparent);
    position: relative;
    z-index: 10;
}

.input-container {
    max-width: 800px;
    margin: 0 auto;
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 8px 12px 8px 20px;
    position: relative;
    transition: box-shadow 0.3s, border-color 0.3s;
}

.input-wrapper:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 25px var(--accent-glow);
}

/* --- Messages & Animations --- */
.message {
    display: flex;
    margin-bottom: 20px;
    max-width: 85%;
    align-self: flex-start;
    animation: message-appear 0.5s ease-out forwards;
}

@keyframes message-appear {
    from {
        opacity: 0;
        transform: translateY(15px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message.user {
    align-self: flex-end;
}

.message.is-loading {
    margin-bottom: 0;
}

.message.is-loading .avatar {
    display: none;
}

.message .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--bot-message-bg);
    margin-right: 15px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    animation: avatar-glow 2s infinite alternate;
}

@keyframes avatar-glow {
    from { box-shadow: 0 0 5px transparent; }
    to { box-shadow: 0 0 15px rgba(0, 170, 255, 0.2); }
}

.message.user .avatar {
    margin-right: 0;
    margin-left: 15px;
    background-color: var(--user-message-bg);
    animation-name: none; /* No glow for user avatar */
}

.message-content {
    background-color: var(--bot-message-bg);
    padding: 12px 16px;
    border-radius: 18px;
    line-height: 1.6;
    word-wrap: break-word;
    overflow-wrap: break-word;
    border-bottom-left-radius: 4px;
}

.message.user .message-content {
    background-color: var(--user-message-bg);
    color: white;
    border-bottom-left-radius: 18px;
    border-bottom-right-radius: 4px;
}

.message-content.loading {
    background-color: transparent;
    padding: 0 !important;
    background-color: transparent !important;
    box-shadow: none !important;
}

/* --- Input Elements --- */
#message-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    color: var(--text-color);
    font-size: 1rem;
    padding: 8px 0;
    resize: none;
    max-height: 150px;
    overflow-y: auto;
    outline: none;
}

#send-button {
    background-color: var(--accent-color);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all 0.2s;
    margin-left: 10px;
    flex-shrink: 0;
    box-shadow: 0 0 15px transparent;
}

#send-button:hover {
    filter: brightness(1.2);
    box-shadow: 0 0 15px var(--accent-glow);
}

#send-button:disabled {
    background-color: #555;
    cursor: not-allowed;
    transform: scale(0.9);
    box-shadow: none;
}

.input-suggestions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.input-suggestions button {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color-secondary);
    padding: 8px 12px;
    border-radius: 16px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.input-suggestions button:hover {
    background-color: var(--border-color);
    color: var(--text-color);
    border-color: #555;
}

.input-suggestions button.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.footer-text {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-color-secondary);
    margin-top: 15px;
    padding-bottom: 5px;
}

/* --- Initial & Loading States --- */
.initial-prompt {
    text-align: center;
    margin: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.initial-prompt .logo {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, var(--accent-color), var(--user-message-bg));
    border-radius: 50%;
    margin: 0 auto 25px;
    box-shadow: 0 0 30px var(--accent-glow);
    animation: float 4s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.initial-prompt h2 {
    font-size: 1.8rem;
    font-weight: 500;
}

.loading-animation {
    display: flex;
    align-items: center;
    padding: 0; /* Убираем отступ */
}

.loading-animation .logo-pulse {
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 50%;
    margin-right: 12px;
    flex-shrink: 0;
    animation: pulse 1.5s infinite ease-in-out;
}


@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}


/* --- Mobile Adaptation --- */
@media (max-width: 640px) {
    .chat-container {
        padding-top: 60px;
    }
    .message {
        max-width: 95%;
    }
    .input-wrapper {
        padding: 5px 8px 5px 15px;
    }
    .input-suggestions {
        gap: 8px;
        flex-wrap: wrap;
    }
    .input-suggestions button {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #444; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }