@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Poppins',sans-serif;
}

body{

    background:linear-gradient(135deg,#050816,#0d1324,#111c34);

    height:100vh;

    overflow:hidden;

    color:white;

}

/* ================= NAVBAR ================= */

.navbar{

    position:fixed;

    top:20px;

    width:100%;

    display:flex;

    justify-content:center;

    align-items:center;

    z-index:100;

}

.logo{

    position:absolute;

    left:40px;

    font-size:30px;

    font-weight:700;

    color:#38bdf8;

}

.nav-menu{

    display:flex;

    gap:18px;

    background:rgba(255,255,255,.06);

    padding:10px;

    border-radius:60px;

    backdrop-filter:blur(20px);

    border:1px solid rgba(255,255,255,.08);

}

.nav-menu a{

    color:white;

    text-decoration:none;

    padding:12px 26px;

    border-radius:40px;

    transition:.3s;

}

.nav-menu a:hover{

    background:#0ea5e9;

    box-shadow:0 0 18px #0ea5e9;

}

.active{

    background:#0ea5e9;

    box-shadow:0 0 18px #0ea5e9;

}

/* ================= CHAT ================= */

.chat-container{

    width:900px;

    height:80vh;

    margin:110px auto;

    background:rgba(255,255,255,.05);

    backdrop-filter:blur(25px);

    border-radius:30px;

    border:1px solid rgba(255,255,255,.08);

    display:flex;

    flex-direction:column;

    overflow:hidden;

    box-shadow:0 0 40px rgba(0,180,255,.15);

}

.chat-header{

    padding:30px;

    text-align:center;

    border-bottom:1px solid rgba(255,255,255,.08);

}

.chat-header h1{

    font-size:42px;

    color:#38bdf8;

}

.chat-header p{

    margin-top:8px;

    color:#cbd5e1;

}

/* ================= MESSAGES ================= */

.chat-box{

    flex:1;

    overflow-y:auto;

    padding:30px;

    display:flex;

    flex-direction:column;

    gap:18px;

}

/* BOT */

.bot{

    align-self:flex-start;

    background:#16213e;

    padding:15px 22px;

    border-radius:20px 20px 20px 5px;

    max-width:70%;

}

/* USER */

.user{

    align-self:flex-end;

    background:#0ea5e9;

    padding:15px 22px;

    border-radius:20px 20px 5px 20px;

    max-width:70%;

}

/* ================= INPUT ================= */

.input-area{

    padding:22px;

    display:flex;

    gap:15px;

    border-top:1px solid rgba(255,255,255,.08);

}

input{

    flex:1;

    padding:18px;

    border:none;

    outline:none;

    border-radius:18px;

    background:#0f172a;

    color:white;

    font-size:17px;

}

button{

    width:140px;

    border:none;

    border-radius:18px;

    background:#0ea5e9;

    color:white;

    cursor:pointer;

    font-size:17px;

    transition:.3s;

}

button:hover{

    transform:scale(1.05);

    box-shadow:0 0 25px #0ea5e9;

}

/* ================= SCROLLBAR ================= */

::-webkit-scrollbar{

    width:8px;

}

::-webkit-scrollbar-thumb{

    background:#0ea5e9;

    border-radius:10px;

}

/* ================= FADE ================= */

.bot,
.user{

    animation:fade .35s ease;

}

@keyframes fade{

    from{

        opacity:0;

        transform:translateY(10px);

    }

    to{

        opacity:1;

        transform:translateY(0);

    }

}

/* ================= RESPONSIVE ================= */

@media (min-width: 1400px) {

    .logo {
        font-size: 34px;
    }

    .nav-menu a {
        padding: 14px 30px;
        font-size: 18px;
    }

    .chat-container {
        width: 1100px;
        height: 82vh;
    }

    .chat-header h1 {
        font-size: 50px;
    }

    .chat-header p {
        font-size: 18px;
    }

    input,
    button {
        font-size: 19px;
    }

    button {
        width: 160px;
    }
}

@media (max-width: 992px) {

    .chat-container {
        width: 92%;
        margin: 100px auto 20px;
    }
}

@media (max-width: 768px) {

    body {
        height: auto;
        min-height: 100vh;
        overflow-y: auto;
    }

    .navbar {
        flex-direction: column;
        gap: 10px;
        top: 12px;
        position: static;
        padding-top: 12px;
    }

    .logo {
        position: static;
        left: auto;
        font-size: 24px;
    }

    .nav-menu {
        gap: 8px;
        padding: 8px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-menu a {
        padding: 10px 18px;
        font-size: 14px;
    }

    .chat-container {
        width: 94%;
        height: 85vh;
        margin: 16px auto;
        border-radius: 20px;
    }

    .chat-header {
        padding: 20px;
    }

    .chat-header h1 {
        font-size: 28px;
    }

    .chat-header p {
        font-size: 14px;
    }

    .chat-box {
        padding: 18px;
        gap: 12px;
    }

    .bot,
    .user {
        max-width: 85%;
        padding: 12px 16px;
        font-size: 15px;
    }

    .input-area {
        padding: 14px;
        gap: 10px;
    }

    input {
        padding: 14px;
        font-size: 15px;
    }

    button {
        width: 90px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {

    .logo {
        font-size: 20px;
    }

    .nav-menu {
        gap: 4px;
    }

    .nav-menu a {
        padding: 8px 14px;
        font-size: 13px;
    }

    .chat-container {
        width: 96%;
        height: 88vh;
        margin: 10px auto;
        border-radius: 16px;
    }

    .chat-header {
        padding: 16px;
    }

    .chat-header h1 {
        font-size: 22px;
    }

    .bot,
    .user {
        max-width: 90%;
        padding: 10px 14px;
        font-size: 14px;
    }

    input {
        padding: 12px;
        font-size: 14px;
    }

    button {
        width: 70px;
        font-size: 13px;
        padding: 0 10px;
    }
}