* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, -apple-system, sans-serif;
}

body, html {
    width: 100%;
    height: 100%;
    background-color: #06070a; /* Deep Space Ultra Black */
    overflow: hidden;
    color: #ffffff;
}

.main-layout {
    display: flex;
    width: 100%;
    height: 100vh;
    background: #0d0f17;
}

.hidden {
    display: none !important;
}

/* Sidebar Styling */
.sidebar {
    width: 350px;
    height: 100%;
    border-right: 1px solid #1a1d2e;
    display: flex;
    flex-direction: column;
    background-color: #0d0f17;
}

.sidebar-header {
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 18px;
    color: #8a2be2; /* Cosmic Purple */
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.2s;
}

.icon-btn:hover {
    background-color: rgba(138, 43, 226, 0.15);
    color: #bd7ff3;
}

.search-box {
    position: relative;
    flex: 1;
}

.search-box input {
    width: 100%;
    padding: 10px 12px 10px 38px;
    border: 1px solid #1f2336;
    background-color: #161925;
    border-radius: 10px;
    font-size: 14px;
    outline: none;
    color: #fff;
    transition: 0.3s;
}

.search-box input:focus {
    border-color: #8a2be2;
    box-shadow: 0 0 10px rgba(138,43,226,0.2);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #535d70;
}

.chat-list {
    flex: 1;
    overflow-y: auto;
}

/* Chat Window Styling */
.chat-window {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: #06070a;
    /* စကြဝဠာ Quantum Grid နောက်ခံဒီဇိုင်း */
    background-image: radial-gradient(rgba(138, 43, 226, 0.08) 1px, transparent 0);
    background-size: 24px 24px;
}

.chat-header {
    height: 65px;
    background: #0d0f17;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #1a1d2e;
}

.chat-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.chat-info span {
    font-size: 13px;
    color: #00ffcc; /* Online ဖြစ်ပါက ပြသမည့် အစိမ်းနီယွန်ရောင် */
}

.message-feed {
    flex: 1;
    padding: 25px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.input-bar {
    padding: 15px 20px;
    background: #0d0f17;
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid #1a1d2e;
}

.input-bar input {
    flex: 1;
    padding: 12px 18px;
    border: 1px solid #1f2336;
    outline: none;
    font-size: 15px;
    background: #161925;
    color: #fff;
    border-radius: 12px;
    transition: 0.3s;
}

.input-bar input:focus {
    border-color: #8a2be2;
}

/* Sign In Form Card Styling */
.auth-container {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #06070a;
    background-image: linear-gradient(to bottom, #06070a, #11131c);
}