html, body {
    height: 100%;
    margin: 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #1e1f22;
    color: #e1e1e1;
}

* {
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 20px;
}

/* Messages area */
#messages {
    flex-grow: 1;
    padding: 15px;
    overflow-y: auto;
    border: 1px solid #333b41;
    background-color: #2c2f36;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.message-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    max-width: 100%;
}

.profile-pic {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.message-bubble {
    background-color: #444c56;
    padding: 10px 15px;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    word-break: break-word;
}

.message-bubble p {
    margin: 0;
    line-height: 1.4;
}

/* Media content */
.media-img,
.media-video {
    width: 500px;
    height: 500px;
    object-fit: cover;
    border-radius: 10px;
}

/* Input section */
.input-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

input[type="text"] {
    flex-grow: 1;
    padding: 10px;
    border-radius: 20px;
    border: 1px solid #444c56;
    background-color: #2c2f36;
    color: #e1e1e1;
}

input[type="text"]:focus {
    outline: none;
    border-color: #4c8bf5;
}

/* Button styles */
button {
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    background-color: #4c8bf5;
    color: white;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #3978d1;
}

button:active {
    background-color: #2962a1;
}

/* Settings overlay */
#settings {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
}

/* Settings content */
.settings-content {
    background-color: #2c2f36;
    padding: 20px;
    border-radius: 10px;
    width: 300px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.settings-content h2 {
    margin-top: 0;
    color: #e1e1e1;
}

/* Modal styles */
#mediaModal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
    padding: 20px;
}

#mediaModal img,
#mediaModal video {
    max-width: 90%;
    max-height: 90%;
    border-radius: 10px;
    object-fit: contain;
}

#mediaModal .close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 30px;
    color: white;
    cursor: pointer;
    z-index: 1001;
}

/* ============================= */
/*        Light Theme           */
/* ============================= */
body.light-theme {
    background-color: #f9f9f9;
    color: #1a1a1a;
}

body.light-theme #messages {
    background-color: #ffffff;
    border-color: #dcdcdc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

body.light-theme .message-bubble {
    background-color: #f1f3f5;
}

body.light-theme input[type="text"] {
    background-color: #ffffff;
    color: #1a1a1a;
    border-color: #ccc;
}

body.light-theme input[type="text"]:focus {
    border-color: #4c8bf5;
    box-shadow: 0 0 0 2px rgba(76, 139, 245, 0.2);
}

body.light-theme button {
    background-color: #4c8bf5;
    color: white;
}

body.light-theme button:hover {
    background-color: #3978d1;
}

body.light-theme button:active {
    background-color: #2962a1;
}

body.light-theme .settings-content {
    background-color: #ffffff;
    color: #1a1a1a;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body.light-theme .settings-content h2 {
    color: #1a1a1a;
}

body.light-theme .media-img,
body.light-theme .media-video {
    border: 1px solid #ddd;
}