.messages-shell { max-width: 1160px; }
.messages-access { padding: 20px; border: 1px solid var(--card-border); border-radius: 16px; background: var(--card-bg); }
.messages-access p { margin-top: 0; }
.messages-layout { display: grid; grid-template-columns: minmax(250px, 320px) minmax(0, 1fr); min-height: 520px; height: min(70dvh, 760px); margin-top: 18px; overflow: hidden; border: 1px solid var(--card-border); border-radius: 18px; background: var(--card-bg); box-shadow: 0 20px 55px #0005; }
.messages-sidebar { display: flex; min-width: 0; min-height: 0; flex-direction: column; border-right: 1px solid var(--card-border); background: #091d31; }
.messages-search { padding: 15px; border-bottom: 1px solid var(--card-border); }
.messages-search label, .messages-compose label, .messages-reply label { display: block; margin-bottom: 6px; color: #bde7ff; font-size: .8rem; font-weight: 800; }
.messages-search > div { display: flex; gap: 7px; }
.messages-search input, .messages-compose textarea, .messages-reply textarea { width: 100%; min-width: 0; padding: 10px; border: 1px solid var(--input-border); border-radius: 9px; background: var(--input-bg); color: #fff; font: inherit; }
.messages-search input:focus-visible, .messages-compose textarea:focus-visible, .messages-reply textarea:focus-visible { outline: 2px solid #75cfff; outline-offset: 1px; }
.messages-layout button { padding: 9px 13px; border: 1px solid #53bbea; border-radius: 9px; background: #35a5df; color: #061b2e; font: 800 .82rem system-ui, sans-serif; cursor: pointer; }
.messages-layout button:disabled { opacity: .6; cursor: wait; }
.messages-search-results { max-height: 175px; overflow: auto; padding: 8px; border-bottom: 1px solid var(--card-border); }
.messages-search-results button, .messages-thread-list button { display: grid; gap: 3px; width: 100%; margin: 0 0 5px; padding: 10px; border: 1px solid transparent; background: transparent; color: #f5f8fc; text-align: left; }
.messages-search-results button:hover, .messages-thread-list button:hover, .messages-thread-list button.is-active { border-color: #4c9dc5; background: #123b58; }
.messages-search-results button small, .messages-thread-list button small, .messages-thread-list button span { overflow: hidden; color: #a9c9dc; font-size: .75rem; text-overflow: ellipsis; white-space: nowrap; }
.messages-sidebar h2 { margin: 0; padding: 13px 15px 9px; font-size: .9rem; }
.messages-sidebar h2 span { display: inline-block; min-width: 20px; padding: 1px 5px; border-radius: 999px; background: #35d6ff; color: #071a2e; text-align: center; font-size: .7rem; }
.messages-thread-list { min-height: 0; overflow: auto; padding: 5px 8px 12px; }
.messages-thread-list button.is-unread strong::after { content: ' · NEW'; color: #70e6be; font-size: .68rem; }
.messages-thread-list p, .messages-search-results p { margin: 8px; color: #a9c9dc; font-size: .82rem; }
.messages-main { min-width: 0; min-height: 0; }
.messages-empty { display: grid; height: 100%; align-content: center; justify-items: center; padding: 24px; text-align: center; }
.messages-empty h2 { margin: 0 0 8px; }
.messages-empty p { max-width: 430px; color: #aecde0; }
.messages-compose { padding: 22px; }
.messages-compose h2 { margin: 0 0 20px; }
.messages-compose form { display: grid; gap: 10px; }
.messages-compose button { justify-self: end; }
.messages-conversation { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; height: 100%; min-height: 0; }
.messages-conversation > header { padding: 14px 17px; border-bottom: 1px solid var(--card-border); }
.messages-conversation h2 { margin: 0; font-size: 1.1rem; }
.messages-conversation small { color: #a9c9dc; text-transform: capitalize; }
.messages-timeline { display: flex; min-height: 0; flex-direction: column; gap: 9px; overflow: auto; padding: 15px; }
.messages-bubble { align-self: flex-start; max-width: min(78%, 550px); padding: 10px 12px; border: 1px solid #2d607e; border-radius: 13px; background: #153b55; }
.messages-bubble.is-mine { align-self: flex-end; border-color: #51b9e2; background: #174d69; }
.messages-bubble strong, .messages-bubble time { display: block; font-size: .71rem; }
.messages-bubble strong { color: #bde7ff; }
.messages-bubble p { margin: 5px 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.messages-bubble time { color: #a9c9dc; }
.messages-reply { padding: 12px 15px; border-top: 1px solid var(--card-border); }
.messages-reply > div { display: flex; align-items: flex-end; gap: 8px; }
.messages-reply textarea { resize: vertical; }
[hidden] { display: none !important; }
@media (max-width: 700px) {
  .messages-layout { display: flex; height: auto; min-height: 0; flex-direction: column; }
  .messages-sidebar { max-height: 310px; border-right: 0; border-bottom: 1px solid var(--card-border); }
  .messages-thread-list { min-height: 100px; }
  .messages-main { min-height: 470px; }
  .messages-conversation { height: 470px; }
  .messages-bubble { max-width: 88%; }
}