/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0077b6, #023e8a);
    padding: 20px;
}

.chat-container {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 800px;
    height: calc(var(--vh, 1vh) * 90); /* Menggunakan variabel viewport height */
    max-height: 800px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.chat-header {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.25);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    border-radius: 20px 20px 0 0;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    flex-shrink: 0; /* Prevent header from shrinking */
}

.chat-header, .input-area {
    background: rgba(173, 232, 244, 0.5);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    z-index: 10;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 100%;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-role {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: 3px;
}

.avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #0096c7;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
}

/* Enhanced floating circles background */
.floating-circles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.floating-circles li {
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(72, 202, 228, 0.5);
    animation: floating 25s linear infinite;
    bottom: -150px;
    border-radius: 50%;
    z-index: 1;
    animation-fill-mode: both;
}

.floating-circles li:nth-child(1) {
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
    animation-duration: 20s;
}

.floating-circles li:nth-child(2) {
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 22s;
}

.floating-circles li:nth-child(3) {
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
    animation-duration: 18s;
}

.floating-circles li:nth-child(4) {
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 24s;
}

.floating-circles li:nth-child(5) {
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;
    animation-duration: 16s;
}

.floating-circles li:nth-child(6) {
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;
    animation-duration: 26s;
}

.floating-circles li:nth-child(7) {
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
    animation-duration: 30s;
}

.floating-circles li:nth-child(8) {
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.floating-circles li:nth-child(9) {
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;
}

.floating-circles li:nth-child(10) {
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 28s;
}

/* Enhanced floating animation with horizontal movement */
@keyframes floating {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.7;
    }
    25% {
        transform: translate(-50px, -250px) rotate(90deg);
        opacity: 0.5;
    }
    50% {
        transform: translate(50px, -500px) rotate(180deg);
        opacity: 0.3;
    }
    75% {
        transform: translate(-30px, -750px) rotate(270deg);
        opacity: 0.5;
    }
    100% {
        transform: translate(0, -1000px) rotate(360deg);
        opacity: 0;
    }
}

.chat-area {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    position: relative;
    background: transparent;
}

.message {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 18px;
    position: relative;
    animation: fadeIn 0.3s ease;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.message.received {
    align-self: flex-start;
    background: rgba(173, 232, 244, 0.8);
    color: #03045e;
    border-bottom-left-radius: 4px;
    backdrop-filter: blur(5px);
}

.message.sent {
    align-self: flex-end;
    background: white;
    color: #03045e;
    border-bottom-right-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.message-content {
    word-wrap: break-word;
    line-height: 1.4;
    color: #001f3f; /* Navy blue text */
}

.message-time {
    font-size: 0.7rem;
    margin-top: 5px;
    opacity: 0.7;
    color: #001f3f; /* Navy blue text */
}

.message.sent .message-time {
    text-align: left; /* Move to left for user bubble */
}

.message.received .message-time {
    text-align: right;
}

.input-area {
    display: flex;
    padding: 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    align-items: center;
    gap: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: sticky;
    bottom: 0;
    z-index: 100;
}

.input-wrapper {
    flex-grow: 1;
    position: relative;
}

.attachment-icons {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 5px;
    transition: all 0.3s ease;
}

.message-input:not(:placeholder-shown) + .attachment-icons {
    opacity: 0;
    transform: translateY(-50%) translateX(20px);
    pointer-events: none;
}

.message-input {
    flex-grow: 1;
    padding: 12px 45px 12px 15px;
    border: 1px solid #ddd;
    border-radius: 12px;
    background: white;
    font-size: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05) inset;
    width: 100%;
}

.message-input:focus {
    outline: none; /* Remove focus outline */
}

.send-btn {
    background: #0096c7;
    border: none;
    border-radius: 12px;
    width: 50px; 
    height: 45px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 150, 199, 0.4);
    flex-shrink: 0;
}

.input-area:focus-within {
    box-shadow: 0 0 15px rgba(72, 202, 228, 0.6);
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background 0.3s ease;
}

.icon-btn:hover {
    background: rgba(0, 150, 199, 0.1);
}

.icon-btn .bi {
    font-size: 24px;
    color: #5f6368;
}

.send-btn .bi {
    font-size: 24px; /* Same as camera icon */
    color: white;
}

.attachment-icons .icon-btn {
    width: 40px;
    height: 40px;
}

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

@keyframes wave {
    0%, 60%, 100% {
        transform: scaleY(0.4);
    }
    30% {
        transform: scaleY(1);
    }
}

.small-avatar {
    position: absolute;
    bottom: -15px; /* Move to bottom */
    left: 10px; /* Center horizontally */
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #0096c7;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px; /* Increase font size for icon */
    border: 2px solid white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 5;
}

.message.received {
    position: relative;
    margin-top: 20px;
    padding-top: 10px;
}

.message.sent {
    position: relative;
}

.sent-user-icon {
    position: absolute;
    bottom: -15px; /* Move to bottom */
    right: 10px; /* Align to right with some margin */
    font-size: 24px;
    color: #0096c7;
    background: white;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 5;
}

.typing-indicator {
    display: flex;
    align-self: flex-start;
    background: #f0f0f0;
    padding: 10px 15px;
    border-radius: 18px;
    margin-bottom: 15px;
}

.typing-dots {
    display: flex;
    align-items: center;
    height: 17px;
}

.typing-dots span {
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #48cae4;
    margin: 0 2px;
}

.typing-dots span:nth-child(1) {
    animation: wave 1.2s infinite;
}

.typing-dots span:nth-child(2) {
    animation: wave 1.2s infinite 0.2s;
}

.typing-dots span:nth-child(3) {
    animation: wave 1.2s infinite 0.4s;
}

@media (max-width: 768px) {
    body {
        align-items: flex-start; /* Header menempel di atas */
        padding: 0;
    }
    
    .chat-container {
        height: 100vh; /* Kembali ke viewport height normal */
        max-height: none;
        border-radius: 0;
        margin-top: 0;
    }
    
    .message {
        max-width: 85%;
    }
}