* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: #f4f4f0;
    color: #1c1c1c;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.4;
}

header {
    background: #2b3a55;
    color: white;
    padding: 0.8em 1.2em;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}
header h1 {
    margin: 0;
    font-size: 1.2em;
    font-weight: 600;
}
#conn-status {
    font-size: 0.85em;
    opacity: 0.9;
}

main {
    max-width: 720px;
    margin: 1.5em auto;
    padding: 0 1em;
}

.screen { display: none; }
body.screen-connecting #screen-connecting { display: block; }
body.screen-join       #screen-join       { display: block; }
body.screen-chat       #screen-chat       { display: block; }

/* --- Join --- */

#screen-join label {
    display: block;
    margin: 0.7em 0 0.2em;
    font-weight: 500;
}
#screen-join input[type=text] {
    width: 100%;
    padding: 0.5em;
    font-size: 1em;
    border: 1px solid #b0b0a8;
    border-radius: 4px;
    background: white;
}
#join-button {
    margin-top: 1em;
}

#join-icon-preview-wrap,
#attach-preview-wrap {
    display: flex;
    gap: 0.6em;
    align-items: center;
    margin-top: 0.4em;
}
#join-icon-preview,
#attach-preview {
    max-width: 64px;
    max-height: 64px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    border: 1px solid #b0b0a8;
}

/* --- Chat --- */

#chat-toolbar {
    display: flex;
    justify-content: space-between;
    font-size: 0.9em;
    color: #555;
    margin-bottom: 0.5em;
}

#log {
    width: 100%;
    height: 22em;
    overflow-y: auto;
    padding: 0.4em 0.6em;
    border: 1px solid #b0b0a8;
    border-radius: 4px;
    background: white;
    color: #1c1c1c;
    font-size: 0.95em;
}

/* Одна строка чата: [иконка] [мета+текст(+картинка)] */
.msg {
    display: flex;
    gap: 0.5em;
    padding: 0.35em 0;
    border-bottom: 1px solid #eee;
    align-items: flex-start;
}
.msg:last-child { border-bottom: none; }

.msg-icon {
    flex: 0 0 32px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    background: #ddd;
    border: 1px solid #c8c8c2;
}
.msg-icon.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9em;
    color: #666;
    background: #e4e4dd;
}

.msg-body { flex: 1; min-width: 0; }

.msg-meta {
    font-size: 0.78em;
    color: #777;
    display: flex;
    gap: 0.4em;
    align-items: baseline;
    margin-bottom: 0.1em;
}
.msg-meta .sender { color: #1c1c1c; font-weight: 600; }
.msg-meta.direct .tag {
    color: #a04000;
    font-weight: 600;
}
.msg-meta.history .tag { color: #999; }

.msg-text {
    word-wrap: break-word;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
}

/* Картинка-вложение: ограничиваем оба измерения, пропорции сохраняем
 * через object-fit: contain, без растяжения по ширине родителя. */
.msg-image {
    display: block;
    margin-top: 0.3em;
    max-width: 280px;
    max-height: 280px;
    width: auto;
    height: auto;
    object-fit: contain;
    border: 1px solid #b0b0a8;
    border-radius: 4px;
    cursor: pointer;
}

/* Системные строки (join/leave/ошибка/история) */
.msg.system { color: #555; font-size: 0.9em; }
.msg.system.error .msg-text { color: #a03030; }

#compose {
    display: flex;
    gap: 0.4em;
    margin-top: 0.6em;
}
#msg-input {
    flex: 1;
    padding: 0.5em;
    font-size: 1em;
    border: 1px solid #b0b0a8;
    border-radius: 4px;
    background: white;
}

button {
    background: #2b3a55;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.5em 1em;
    font-size: 0.95em;
    cursor: pointer;
}
button:hover {
    background: #354766;
}
button:disabled {
    background: #aaa;
    cursor: not-allowed;
}
#attach-button,
#join-icon-clear,
#attach-clear {
    background: #777;
}

#chat-hint {
    margin-top: 0.6em;
    color: #777;
    font-size: 0.85em;
}
#chat-hint code {
    background: #e4e4dd;
    padding: 0 4px;
    border-radius: 3px;
}

.error {
    color: #a03030;
    margin-top: 0.5em;
}