:root {
    --primary: #00b3ab;
    --secondary: #00d0c6;
    --sidebar: #091a23;
    --topbar: #ffffff;
    --bg: #f5f7fb;
    --surface: #ffffff;
    --ink: #12233f;
    --muted: #60728c;
    --border: #e3e9f3;
    --danger: #dc2626;
    --warning: #f59e0b;
    --success: #16a36a;
    --info: #2f7cf6;
    --on-primary: #091a23;
    --on-sidebar: #ffffff;
    --on-topbar: #12233f;
    --on-bg: #12233f;
    --on-danger: #ffffff;
    --on-warning: #091a23;
    --on-success: #ffffff;
    --on-info: #ffffff;
    --link: #087c77;
    color: var(--ink);
    background: var(--bg);
    font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
}
* {
    box-sizing: border-box;
}
[hidden] {
    display: none !important;
}
body {
    margin: 0;
    min-width: 320px;
    color: var(--on-bg);
}
button, input, textarea, select {
    font: inherit;
}
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    min-height: 42px;
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 10px 16px;
    background: var(--primary);
    color: var(--on-primary);
    font-weight: 700;
    line-height: 1.2;
    cursor: pointer;
    transition: filter .16s ease, transform .16s ease, box-shadow .16s ease;
}
button:hover:not(:disabled) {
    filter: brightness(.96);
    transform: translateY(-1px);
}
button:active:not(:disabled) {
    transform: translateY(0);
}
button:disabled {
    opacity: .55;
    cursor: not-allowed;
}
:focus-visible {
    outline: 3px solid var(--info);
    outline-offset: 2px;
}
a {
    color: var(--link);
    text-underline-offset: 3px;
}
a:hover {
    text-decoration-thickness: 2px;
}
.primary, .form > button, .login form > button {
    background: var(--primary);
    color: var(--on-primary);
}
.subtle {
    background: color-mix(in srgb, var(--primary) 13%, var(--surface));
    border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
    color: var(--ink);
}
.danger {
    background: var(--danger);
    color: var(--on-danger);
}
.warning {
    background: var(--warning);
    color: var(--on-warning);
}
.success {
    background: var(--success);
    color: var(--on-success);
}
.info {
    background: var(--info);
    color: var(--on-info);
}
#shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
}
aside {
    background: var(--sidebar);
    color: var(--on-sidebar);
    padding: 28px 18px;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 800;
    padding: 8px 15px 28px;
    overflow-wrap: anywhere;
}
.mark {
    background: var(--primary);
    color: var(--on-primary);
    border-radius: 14px;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    flex: none;
    font-size: 23px;
    box-shadow: 0 0 0 2px var(--secondary);
}
nav {
    display: grid;
    gap: 6px;
}
nav button {
    justify-content: flex-start;
    width: 100%;
    text-align: left;
    background: transparent;
    color: var(--on-sidebar);
    border-color: transparent;
    padding: 12px 14px;
}
nav button.active, nav button:hover {
    background: color-mix(in srgb, var(--on-sidebar) 15%, transparent);
    color: var(--on-sidebar);
}
nav b {
    background: var(--danger);
    color: var(--on-danger);
    border-radius: 30px;
    padding: 2px 7px;
    margin-left: auto;
}
.asideFoot {
    margin-top: auto;
    padding: 15px;
    color: var(--on-sidebar);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}
#account {
    overflow: hidden;
    text-overflow: ellipsis;
}
#logout {
    min-height: 36px;
    flex: none;
    background: transparent;
    color: var(--on-sidebar);
    border: 1px solid currentColor;
}
main {
    max-width: 1320px;
    width: 100%;
    margin: 0 auto;
    padding: 32px 42px;
    min-width: 0;
}
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 28px;
    padding: 12px 18px;
    margin: -12px -18px 28px;
    border-radius: 15px;
    background: var(--topbar);
    color: var(--on-topbar);
}
header small {
    color: var(--on-topbar);
    font-weight: 800;
    letter-spacing: .13em;
    opacity: .8;
}
header h1 {
    color: var(--on-topbar);
}
h1 {
    font-size: 30px;
    margin: 6px 0;
}
h2 {
    font-size: 19px;
    margin: 0 0 15px;
}
p {
    line-height: 1.55;
}
.panel, .card {
    background: var(--surface);
    color: var(--ink);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 12px 35px #1d31500a;
    min-width: 0;
}
.stack {
    display: grid;
    gap: 18px;
}
.cols {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 22px;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
}
label {
    display: grid;
    gap: 6px;
    font-size: 13px;
    font-weight: 650;
    color: var(--muted);
}
input, textarea, select {
    width: 100%;
    min-width: 0;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink);
}
input::placeholder, textarea::placeholder {
    color: var(--muted);
}
input[readonly] {
    background: var(--bg);
}
textarea {
    min-height: 110px;
    resize: vertical;
}
.form {
    display: grid;
    gap: 15px;
}
.form > button {
    justify-self: start;
}
.row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}
.row > * {
    flex: 1;
}
.row button, .actions button {
    flex: 0 0 auto;
}
.actions {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}
.muted, small {
    color: var(--muted);
}
.badge {
    font-size: 11px;
    padding: 5px 9px;
    border-radius: 7px;
    background: color-mix(in srgb, var(--primary) 15%, var(--surface));
    color: var(--ink);
    font-weight: 800;
}
.post h2 {
    margin: 14px 0 4px;
}
.post img, .post video {
    width: 100%;
    max-height: 430px;
    object-fit: cover;
    border-radius: 12px;
}
.post p {
    white-space: pre-wrap;
}
.login {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px 0;
    background: radial-gradient(circle at 80% 20%, color-mix(in srgb, var(--primary) 18%, var(--bg)), transparent 35%), var(--bg);
}
.login .panel {
    width: min(430px, 92vw);
    display: grid;
    gap: 17px;
    padding: 36px;
}
.login .panel > button {
    width: 100%;
}
.login .mark {
    width: 56px;
    height: 56px;
}
.login h1 {
    margin: 0;
}
.login p {
    margin: 0 0 12px;
}
.login a {
    text-align: center;
}
.online {
    color: var(--success);
    font-size: 12px;
}
.offline {
    color: var(--muted);
    font-size: 12px;
}
.contact {
    display: block;
    width: 100%;
    min-height: 58px;
    text-align: left;
    background: var(--surface);
    color: var(--ink);
    border: 0;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    padding: 12px 14px;
}
.contact:hover {
    background: color-mix(in srgb, var(--primary) 8%, var(--surface));
}
.chatLayout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    min-height: 62vh;
    padding: 0;
    overflow: hidden;
}
.chatContacts {
    border-right: 1px solid var(--border);
    max-height: 65vh;
    overflow: auto;
}
.chatPane {
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.messages {
    padding: 20px;
    display: grid;
    align-content: start;
    gap: 12px;
    overflow: auto;
    height: 50vh;
    background: var(--bg);
}
.bubble {
    max-width: 80%;
    width: max-content;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 10px 14px;
    overflow-wrap: anywhere;
}
.bubble.mine {
    justify-self: end;
    background: color-mix(in srgb, var(--primary) 18%, var(--surface));
}
.bubble img, .bubble video {
    max-width: 100%;
    width: 240px;
    border-radius: 10px;
}
.bubble audio {
    max-width: 250px;
}
.bubble small {
    display: block;
    text-align: right;
    margin-top: 5px;
}
.chatForm {
    display: flex;
    gap: 8px;
    padding: 12px;
    align-items: center;
}
.chatForm input[type=file] {
    max-width: 180px;
    font-size: 11px;
}
.chatForm input[name=body] {
    flex: 1;
}
.table {
    width: 100%;
    border-collapse: collapse;
}
.table th, .table td {
    padding: 11px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    font-size: 13px;
}
.table tr:hover {
    background: color-mix(in srgb, var(--primary) 5%, var(--surface));
}
.roleGrid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}
.roleGrid label {
    display: flex;
    align-items: center;
    color: var(--ink);
}
.roleGrid input {
    width: auto;
}
.banner {
    background: linear-gradient(125deg, var(--sidebar), color-mix(in srgb, var(--primary) 35%, var(--sidebar)));
    padding: 27px;
    color: var(--on-sidebar);
    border-radius: 18px;
}
.banner h2 {
    color: var(--on-sidebar);
}
#toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--sidebar);
    color: var(--on-sidebar);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 18px;
    display: none;
    z-index: 5;
    max-width: 340px;
}
@media(max-width: 800px) {
    #shell {
        display: block;
    }
    aside {
        height: auto;
        position: sticky;
        z-index: 3;
        top: 0;
        padding: 8px 12px;
    }
    .brand {
        padding: 5px;
        font-size: 15px;
    }
    .brand .mark {
        width: 28px;
        height: 28px;
    }
    nav {
        display: flex;
        overflow: auto;
        gap: 2px;
    }
    nav button {
        width: auto;
        white-space: nowrap;
        font-size: 13px;
        padding: 9px 12px;
    }
    nav button span {
        display: none;
    }
    .asideFoot {
        display: flex;
        padding: 5px;
        font-size: 12px;
    }
    #logout {
        min-height: 30px;
        padding: 5px 9px;
    }
    main {
        padding: 17px;
    }
    header {
        margin: 0 0 18px;
    }
    header h1 {
        font-size: 25px;
    }
    .cols {
        grid-template-columns: 1fr;
    }
    .chatLayout {
        grid-template-columns: 110px minmax(0, 1fr);
    }
    .contact {
        font-size: 12px;
        padding: 9px;
        overflow: hidden;
    }
    .chatForm {
        flex-wrap: wrap;
    }
    .chatForm input[name=body] {
        min-width: 55%;
    }
    .panel {
        padding: 16px;
    }
    .table {
        display: block;
        overflow: auto;
    }
}
@media(prefers-reduced-motion: reduce) {
    button {
        transition: none;
    }
    button:hover:not(:disabled) {
        transform: none;
    }
}