:root {
    --bg-color: #0a0a0a;
    --text-color: rgba(255, 255, 255, 0.87);
    --accent-color: #ffffff;
    --input-bg: rgba(255, 255, 255, 0.1);
    --message-bg: rgba(255, 255, 255, 0.15);
    --ai-message-bg: rgba(255, 255, 255, 0.05);
    --shadow-color: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto Mono', monospace;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    /* background-image: url('https://i.imgur.com/XzZWHZv.png'); */
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
    filter: grayscale(100%);
}

.container {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 800px;
    height: 100vh;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    padding-bottom: 2rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    opacity: 0;
    animation: fadeInIntro 2s ease-out 0.5s forwards, fadeOutIntro 1s ease-in 3.5s forwards;
}

@keyframes fadeInIntro {
    from { opacity: 0; transform: translate(-50%, -60%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

@keyframes fadeOutIntro {
    from { opacity: 1; transform: translate(-50%, -50%); }
    to { opacity: 0; transform: translate(-50%, -40%); }
}

h1 {
    font-family: 'Permanent Marker', cursive;
    font-size: 6rem;
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3), 0 0 20px rgba(255, 255, 255, 0.2);
    animation: glow 2s ease-in-out infinite alternate, introZoom 4s ease-out;
    transform-style: preserve-3d;
    perspective: 1000px;
}

@keyframes glow {
    from { text-shadow: 0 0 5px rgba(255, 255, 255, 0.3), 0 0 10px rgba(255, 255, 255, 0.2); }
    to { text-shadow: 0 0 20px rgba(255, 255, 255, 0.6), 0 0 30px rgba(255, 255, 255, 0.4); }
}

@keyframes introZoom {
    0% { transform: scale(0.5) rotateX(45deg); opacity: 0; }
    50% { transform: scale(1.2) rotateX(0deg); opacity: 1; }
    100% { transform: scale(1) rotateX(0deg); opacity: 1; }
}

header p {
    font-size: 1.5rem;
    margin-top: 1rem;
    opacity: 0.8;
    font-style: italic;
    animation: fadeIn 2s ease-out 1s forwards;
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#chat-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInChat 1s ease-out 4.5s forwards;
}

@keyframes fadeInChat {
    from { 
        opacity: 0; 
        transform: translateY(20px);
    }
    to { 
        opacity: 1; 
        transform: translateY(0);
    }
}

#chat-messages {
    flex-grow: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
/*     background-image: url('https://i.imgur.com/pZMIAJi.jpg'); */
    background-size: cover;
    background-position: center;
    border-radius: 10px 10px 0 0;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

#chat-messages::-webkit-scrollbar {
    display: none;
}

#chat-form {
    display: flex;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

#user-input {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 8px 0 0 8px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-family: 'Roboto Mono', monospace;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

#user-input:focus {
    outline: none;
    background-color: rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

#user-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
    animation: pulsePlaceholder 2s infinite;
}

@keyframes pulsePlaceholder {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

#chat-form button {
    padding: 0.75rem;
    border: none;
    background-color: var(--accent-color);
    color: var(--bg-color);
    font-family: 'Roboto Mono', monospace;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0 8px 8px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

#chat-form button:disabled {
    background-color: var(--input-bg);
    cursor: not-allowed;
}

#chat-form button svg {
    width: 24px;
    height: 24px;
    transition: all 0.3s ease;
}

#chat-form button:disabled svg {
    fill: var(--text-color);
    opacity: 0.5;
}

footer {
    text-align: center;
    padding-top: 1rem;
    font-size: 0.8rem;
    opacity: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    animation: fadeInFooter 1s ease-in 4.5s forwards;
}

@keyframes fadeInFooter {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 0.7; transform: translateY(0); }
}

.message {
    max-width: 80%;
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    position: relative;
    animation: fadeIn 0.3s ease-out;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.9);
    color: #000;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-message {
    align-self: flex-end;
    border-bottom-right-radius: 0;
    background-color: #e0f7fa;
}

.ai-message {
    align-self: flex-start;
    border-bottom-left-radius: 0;
    background-color: #fff9c4;
}

.user-message::before, .ai-message::before {
    content: '';
    position: absolute;
    bottom: 0;
    width: 0;
    height: 0;
    border: 10px solid transparent;
}

.user-message::before {
    right: -10px;
    border-left-color: #e0f7fa;
    border-bottom-color: #e0f7fa;
}

.ai-message::before {
    left: -10px;
    border-right-color: #fff9c4;
    border-bottom-color: #fff9c4;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

#user-input.shake {
    animation: shake 0.3s ease-in-out;
    border-color: #ff4444;
}