@import url("https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&display=swap");

:root {
    --font-body: "Be Vietnam Pro", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    --font-heading: "Be Vietnam Pro", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

    --bg-0: #f4f7ff;
    --bg-1: #ecf1ff;
    --bg-2: #fff7ed;
    --surface: rgba(255, 255, 255, 0.84);
    --surface-strong: #ffffff;
    --ink: #132041;
    --muted: #5f6f94;
    --line: #2b3f73;
    --accent: #ff6f4d;
    --accent-2: #476dff;
    --success: #19ae65;
    --warn: #d9a938;
    --danger: #ce4f4f;
    --shadow: 0 12px 28px rgba(23, 35, 70, 0.14);
    --radius-xl: 16px;
    --radius-lg: 12px;
    --radius-md: 10px;
    --radius-sm: 8px;
}

body[data-theme="midnight"] {
    --bg-0: #0d1329;
    --bg-1: #111936;
    --bg-2: #172148;
    --surface: rgba(20, 29, 60, 0.82);
    --surface-strong: #1a254d;
    --ink: #e9eeff;
    --muted: #9aa9ce;
    --line: #8fa4df;
    --accent: #6be2ff;
    --accent-2: #8d7bff;
    --success: #45d09b;
    --warn: #f2bf53;
    --danger: #f58a95;
    --shadow: 0 18px 42px rgba(5, 8, 20, 0.45);
}

body[data-theme="sunrise"] {
    --bg-0: #fff4e9;
    --bg-1: #ffe8d8;
    --bg-2: #fff9f1;
    --surface: rgba(255, 255, 255, 0.86);
    --surface-strong: #fffdf8;
    --ink: #3a241f;
    --muted: #89685f;
    --line: #7a4f45;
    --accent: #ff815a;
    --accent-2: #e58b2f;
    --success: #2c9f73;
    --warn: #d28c2e;
    --danger: #ca4a45;
    --shadow: 0 12px 30px rgba(135, 90, 60, 0.2);
}

body[data-theme="forest"] {
    --bg-0: #0f1a14;
    --bg-1: #15231a;
    --bg-2: #21322a;
    --surface: rgba(20, 36, 27, 0.84);
    --surface-strong: #1d3226;
    --ink: #edf8ef;
    --muted: #a7c0aa;
    --line: #87b78a;
    --accent: #93d78f;
    --accent-2: #6c9eff;
    --success: #72d28c;
    --warn: #d7b566;
    --danger: #ef8a8a;
    --shadow: 0 16px 36px rgba(3, 9, 6, 0.5);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    color: var(--ink);
    font-family: var(--font-body);
    background:
        radial-gradient(circle at 8% 10%, color-mix(in srgb, var(--accent) 18%, transparent) 0 17%, transparent 18%),
        radial-gradient(circle at 92% 12%, color-mix(in srgb, var(--accent-2) 16%, transparent) 0 15%, transparent 16%),
        radial-gradient(circle at 76% 86%, color-mix(in srgb, var(--warn) 14%, transparent) 0 17%, transparent 18%),
        linear-gradient(160deg, var(--bg-0), var(--bg-1) 45%, var(--bg-2) 100%);
    letter-spacing: 0.005em;
    line-height: 1.45;
}

.grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.09;
    background-image: radial-gradient(rgba(18, 29, 53, 0.25) 0.55px, transparent 0.55px);
    background-size: 4px 4px;
}

h1,
h2,
h3 {
    margin: 0;
    font-family: var(--font-heading);
    letter-spacing: 0.02em;
}

.muted {
    margin: 0;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
}

.topbar-subtitle {
    margin: 2px 0 0;
    color: color-mix(in srgb, var(--ink) 58%, transparent);
    font-size: 13px;
}

.current-user {
    margin: 2px 0 0;
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
}

input,
textarea,
select,
button {
    font: inherit;
}

.sidebar-input,
.inline-form input,
.auth-form input,
.message-form textarea,
.theme-picker select {
    width: 100%;
    border: 1.8px solid color-mix(in srgb, var(--line) 82%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    color: var(--ink);
    padding: 11px 13px;
}

.sidebar-input:focus,
.inline-form input:focus,
.auth-form input:focus,
.message-form textarea:focus,
.theme-picker select:focus {
    outline: none;
    border-color: var(--accent-2);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-2) 20%, transparent);
}

.message-form textarea {
    resize: none;
    min-height: 52px;
    max-height: 150px;
}

.ghost-button,
.ghost-mini,
.message-form button,
.auth-form button,
.icon-button {
    border: 1.8px solid color-mix(in srgb, var(--line) 85%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-strong) 95%, transparent);
    color: var(--ink);
    cursor: pointer;
    font-weight: 700;
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.ghost-button,
.message-form button,
.auth-form button {
    padding: 10px 14px;
}

.ghost-mini,
.icon-button {
    padding: 7px 11px;
}

.ghost-button:hover,
.ghost-mini:hover,
.message-form button:hover,
.auth-form button:hover,
.icon-button:hover {
    transform: translateY(-1px);
    border-color: var(--accent-2);
}

.message-form button,
.auth-form button {
    background: linear-gradient(130deg, var(--accent), var(--accent-2));
    color: #fff;
    border-color: transparent;
}

.icon-button {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    font-size: 20px;
}

.mobile-only {
    display: none;
}

.full-width {
    width: 100%;
}

.stack-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.contact-card {
    border: 1.8px solid color-mix(in srgb, var(--line) 82%, transparent);
    border-radius: var(--radius-lg);
    padding: 11px;
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    display: grid;
    gap: 8px;
    box-shadow: 0 5px 16px rgba(19, 35, 70, 0.09);
}

.contact-card.active {
    border-color: color-mix(in srgb, var(--accent) 66%, var(--line));
    background: color-mix(in srgb, var(--accent) 10%, var(--surface-strong));
}

.contact-card.small {
    padding: 10px;
}

.contact-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.contact-title {
    border: 0;
    background: transparent;
    color: var(--ink);
    font-weight: 700;
    cursor: pointer;
    padding: 0;
    text-align: left;
    line-height: 1.25;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.contact-title.static {
    cursor: default;
}

.card-meta {
    color: var(--muted);
    font-size: 12px;
}

.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.card-actions.wrap {
    justify-content: flex-start;
}

.status-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1.5px solid color-mix(in srgb, var(--line) 65%, transparent);
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    white-space: nowrap;
}

.status-chip.online {
    color: #0b8f4f;
    border-color: color-mix(in srgb, var(--success) 70%, transparent);
    background: color-mix(in srgb, var(--success) 18%, transparent);
}

.status-chip.friend,
.status-chip.group {
    color: #7a4c00;
    border-color: color-mix(in srgb, var(--warn) 72%, transparent);
    background: color-mix(in srgb, var(--warn) 22%, transparent);
}

.status-chip.muted-chip,
.status-chip.offline {
    color: var(--muted);
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    display: flex;
    gap: 8px;
    align-items: center;
}

.tag {
    border-radius: 999px;
    border: 1.6px solid color-mix(in srgb, var(--line) 75%, transparent);
    padding: 4px 10px;
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    font-size: 12px;
    font-weight: 600;
}

.tag.pending {
    background: color-mix(in srgb, var(--warn) 24%, transparent);
}

.empty-item,
.empty-state {
    border: 1.8px dashed color-mix(in srgb, var(--line) 50%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-strong) 80%, transparent);
    color: var(--muted);
}

.empty-item {
    font-size: 13px;
    padding: 12px;
}

.empty-item.wide {
    margin-top: 8px;
}

.empty-state {
    padding: 16px;
    font-size: 14px;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-shell {
    width: min(1020px, 100%);
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    border: 1.8px solid color-mix(in srgb, var(--line) 70%, transparent);
    border-radius: calc(var(--radius-xl) + 4px);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: color-mix(in srgb, var(--surface) 95%, transparent);
}

.auth-brand {
    padding: clamp(24px, 4vw, 40px);
    background:
        radial-gradient(circle at 10% 15%, color-mix(in srgb, var(--accent) 22%, transparent) 0 18%, transparent 19%),
        radial-gradient(circle at 80% 25%, color-mix(in srgb, var(--accent-2) 20%, transparent) 0 17%, transparent 18%),
        linear-gradient(165deg, color-mix(in srgb, var(--surface-strong) 84%, transparent), color-mix(in srgb, var(--bg-1) 70%, transparent));
    border-right: 1.8px solid color-mix(in srgb, var(--line) 38%, transparent);
}

.auth-brand h1 {
    margin-top: 10px;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 0.98;
}

.auth-brand p {
    margin-top: 12px;
    color: color-mix(in srgb, var(--ink) 70%, transparent);
}

.auth-card {
    padding: clamp(22px, 3vw, 34px);
    display: grid;
    align-content: center;
    gap: 10px;
    background: color-mix(in srgb, var(--surface-strong) 88%, transparent);
}

.auth-card h2 {
    font-size: clamp(30px, 3.5vw, 42px);
    line-height: 1;
}

.auth-subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.auth-form {
    display: grid;
    gap: 10px;
    margin-top: 10px;
}

.auth-form label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    font-weight: 700;
}

.auth-switch {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.auth-switch a {
    color: var(--accent-2);
    font-weight: 700;
    text-decoration: none;
}

.notice {
    border-radius: var(--radius-md);
    border: 1.6px solid color-mix(in srgb, var(--line) 45%, transparent);
    padding: 9px 11px;
    font-size: 13px;
}

.notice-error {
    background: color-mix(in srgb, var(--danger) 16%, transparent);
    color: color-mix(in srgb, var(--danger) 88%, #541515);
}

.notice-info {
    background: color-mix(in srgb, var(--warn) 17%, transparent);
    color: color-mix(in srgb, var(--warn) 85%, #5a4700);
}

.chat-page {
    min-height: 100dvh;
    height: 100dvh;
    overflow: hidden;
}

.chat-layout {
    height: 100dvh;
    min-height: 100dvh;
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 10px;
    padding: 10px 0 12px;
    overflow: hidden;
}

.app-topbar {
    position: relative;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    width: min(1380px, calc(100% - 16px));
    margin: 0 auto;
    padding: 11px 14px;
    border: 1.8px solid color-mix(in srgb, var(--line) 72%, transparent);
    border-radius: var(--radius-xl);
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    box-shadow: var(--shadow);
}

.app-topbar-brand h1 {
    font-size: clamp(24px, 2.4vw, 34px);
    line-height: 1.05;
    text-transform: none;
}

.app-topbar-user {
    min-width: 140px;
    text-align: right;
    position: relative;
    padding-right: 20px;
}

.app-topbar-user .current-user {
    font-size: clamp(18px, 1.8vw, 24px);
}

.status-dot {
    position: absolute;
    right: 6px;
    top: 18px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 28%, transparent);
}

.app-topbar-tools {
    position: relative;
    display: grid;
    justify-items: end;
    gap: 8px;
}

.notification-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.notification-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    border-radius: 999px;
    background: linear-gradient(125deg, var(--accent), var(--danger));
    color: #fff;
    font-size: 11px;
    font-weight: 800;
}

.notification-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    width: min(420px, 88vw);
    max-height: min(62vh, 520px);
    overflow: auto;
    border: 1.8px solid color-mix(in srgb, var(--line) 72%, transparent);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--surface) 97%, transparent);
    box-shadow: var(--shadow);
    z-index: 95;
}

.notification-panel-header {
    position: sticky;
    top: 0;
    z-index: 1;
    padding: 10px 12px;
    border-bottom: 1.6px solid color-mix(in srgb, var(--line) 40%, transparent);
    background: color-mix(in srgb, var(--surface-strong) 95%, transparent);
}

.notification-panel-subtitle {
    margin: 4px 0 0;
    font-size: 12px;
    color: var(--muted);
}

.notification-list {
    padding: 10px;
    gap: 8px;
}

.notification-item {
    border: 1.6px solid color-mix(in srgb, var(--line) 56%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    padding: 10px;
    display: grid;
    gap: 6px;
}

.notification-item.private-message,
.notification-item.group-message {
    border-color: color-mix(in srgb, var(--accent-2) 70%, transparent);
}

.notification-item.friend-request,
.notification-item.friend-request-approved,
.notification-item.group-join-approved {
    border-color: color-mix(in srgb, var(--success) 66%, transparent);
}

.notification-item.group-join-request,
.notification-item.group-invite {
    border-color: color-mix(in srgb, var(--warn) 66%, transparent);
}

.notification-item-title {
    margin: 0;
    font-size: 14px;
    font-weight: 700;
}

.notification-item-message {
    margin: 0;
    font-size: 13px;
    color: color-mix(in srgb, var(--ink) 82%, transparent);
}

.notification-item-meta {
    margin: 0;
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.notification-toast-stack {
    position: fixed;
    right: 14px;
    top: 14px;
    z-index: 120;
    display: grid;
    gap: 8px;
    width: min(360px, calc(100vw - 20px));
    pointer-events: none;
}

.notification-toast {
    border: 1.8px solid color-mix(in srgb, var(--line) 72%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-strong) 95%, transparent);
    box-shadow: var(--shadow);
    padding: 9px 11px;
    display: grid;
    gap: 4px;
    animation: rise 0.22s ease;
}

.notification-toast-title {
    margin: 0;
    font-size: 13px;
    font-weight: 700;
}

.notification-toast-message {
    margin: 0;
    font-size: 12px;
    color: var(--muted);
}

.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(8, 14, 28, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 50;
}

.app-shell {
    min-height: 0;
    height: 100%;
    display: grid;
    grid-template-columns: 292px minmax(0, 1fr);
    gap: 12px;
    width: min(1380px, calc(100% - 16px));
    margin: 0 auto;
    padding: 0;
}

.sidebar {
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: 0;
    border: 1.8px solid color-mix(in srgb, var(--line) 76%, transparent);
    border-radius: var(--radius-xl);
    background: color-mix(in srgb, var(--surface) 95%, transparent);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.sidebar-nav {
    display: grid;
    gap: 6px;
    padding: 12px;
    border-bottom: 1.8px solid color-mix(in srgb, var(--line) 42%, transparent);
}

.nav-link {
    display: block;
    text-decoration: none;
    color: var(--ink);
    font-weight: 600;
    border: 1.4px solid transparent;
    border-radius: var(--radius-sm);
    padding: 8px 10px;
}

.nav-link:hover {
    border-color: color-mix(in srgb, var(--line) 55%, transparent);
    background: color-mix(in srgb, var(--surface-strong) 80%, transparent);
}

.sidebar-section {
    padding: 12px;
    overflow: auto;
}

.sidebar-section h2 {
    margin: 0 0 10px;
    font-family: var(--font-heading);
    font-size: 22px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.sidebar-subsection {
    margin-top: 12px;
    display: grid;
    gap: 8px;
}

.section-label {
    margin: 0;
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1.8px solid color-mix(in srgb, var(--line) 42%, transparent);
}

.chat-panel {
    --composer-height: 128px;
    min-height: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    overflow: hidden;
}

.chat-header,
.group-panel,
.messages,
.composer-shell {
    border: 1.8px solid color-mix(in srgb, var(--line) 76%, transparent);
    border-radius: var(--radius-xl);
    background: color-mix(in srgb, var(--surface) 95%, transparent);
    box-shadow: var(--shadow);
}

.chat-header {
    padding: 12px 14px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.chat-header h2 {
    font-size: clamp(24px, 2vw, 32px);
    line-height: 1.05;
}

.chat-meta {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.chat-header-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
    margin-left: auto;
}

.badge {
    border-radius: 999px;
    padding: 5px 11px;
    font-size: 11px;
    font-weight: 700;
    border: 1.5px solid color-mix(in srgb, var(--line) 65%, transparent);
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    color: var(--muted);
}

.badge.online {
    color: #0e9050;
    border-color: color-mix(in srgb, var(--success) 72%, transparent);
    background: color-mix(in srgb, var(--success) 19%, transparent);
}

.badge.group {
    color: #704a06;
    border-color: color-mix(in srgb, var(--warn) 70%, transparent);
    background: color-mix(in srgb, var(--warn) 20%, transparent);
}

.group-panel {
    padding: 12px 14px;
    display: grid;
    gap: 10px;
}

.group-panel.hidden {
    display: none;
}

.group-summary {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: 13px;
}

.group-panel-heading {
    margin: 0;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.group-mode-hint {
    margin: 0;
    font-size: 13px;
    color: var(--muted);
}

.group-section-title {
    margin: 2px 0;
    color: var(--muted);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.1em;
}

.messages {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 12px;
    padding-bottom: calc(var(--composer-height) + 12px);
    display: grid;
    align-content: start;
    gap: 10px;
    scrollbar-gutter: stable;
    scroll-padding-bottom: calc(var(--composer-height) + 12px);
    overscroll-behavior: contain;
}

.bubble {
    width: auto;
    justify-self: start;
    max-width: min(82%, 700px);
    border: 1.6px solid color-mix(in srgb, var(--line) 72%, transparent);
    border-radius: 14px;
    padding: 9px 11px;
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    animation: rise 0.22s ease;
}

.bubble.mine {
    justify-self: end;
    color: #fff;
    border-color: transparent;
    background: linear-gradient(130deg, var(--accent), var(--accent-2));
}

.bubble-header {
    font-size: 11px;
    font-weight: 700;
    opacity: 0.86;
    margin-bottom: 4px;
}

.bubble-text {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
    font-size: 14px;
}

.bubble-media {
    margin-top: 8px;
}

.bubble-media img {
    max-width: 100%;
    max-height: clamp(120px, 36vh, 320px);
    display: block;
    border-radius: 12px;
    object-fit: cover;
}

.composer-shell {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 12px;
    display: grid;
    grid-template-rows: auto auto;
    align-content: start;
    gap: 10px;
    z-index: 2;
}

.composer-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.emoji-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.emoji-chip,
.upload-chip {
    border: 1.6px solid color-mix(in srgb, var(--line) 75%, transparent);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
    cursor: pointer;
    font-weight: 700;
}

.upload-chip input {
    display: none;
}

.attachment-preview {
    color: var(--muted);
    font-size: 12px;
    max-width: min(46ch, 100%);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.message-form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: stretch;
}

.message-form textarea {
    min-height: 54px;
    height: 54px;
    line-height: 1.4;
}

.message-form button {
    min-width: 92px;
    height: 54px;
    align-self: stretch;
}

.workspace-page,
.admin-page {
    min-height: 100vh;
}

.workspace-shell,
.admin-shell {
    width: min(1360px, 100% - 24px);
    margin: 12px auto;
    position: relative;
    z-index: 1;
    display: grid;
    gap: 12px;
}

.workspace-header,
.workspace-card,
.admin-panel,
.admin-header {
    border: 1.8px solid color-mix(in srgb, var(--line) 75%, transparent);
    border-radius: var(--radius-xl);
    background: color-mix(in srgb, var(--surface) 95%, transparent);
    box-shadow: var(--shadow);
}

.workspace-header,
.admin-header {
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.workspace-header h1,
.admin-header h1 {
    font-size: clamp(30px, 3vw, 44px);
    line-height: 0.95;
}

.workspace-subtitle,
.admin-subtitle,
.admin-note {
    margin: 7px 0 0;
    font-size: 13px;
    color: var(--muted);
}

.workspace-actions,
.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.workspace-grid {
    display: grid;
    gap: 12px;
}

.profile-grid {
    grid-template-columns: repeat(2, minmax(320px, 1fr));
    grid-template-areas:
        "info requests"
        "friends search";
}

.profile-card-info {
    grid-area: info;
}

.profile-card-requests {
    grid-area: requests;
}

.profile-card-friends {
    grid-area: friends;
}

.profile-card-search {
    grid-area: search;
}

.groups-grid {
    grid-template-columns: minmax(330px, 420px) minmax(0, 1fr);
}

.inline-form {
    display: grid;
    gap: 8px;
}

.inline-form button {
    justify-self: start;
    border: 1.8px solid color-mix(in srgb, var(--line) 85%, transparent);
    border-radius: var(--radius-md);
    background: linear-gradient(130deg, var(--accent), var(--accent-2));
    color: #fff;
    font-weight: 700;
    padding: 10px 14px;
    cursor: pointer;
}

.group-manage-form {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
}

.group-manage-form button {
    justify-self: auto;
}

.toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.workspace-card,
.admin-panel {
    padding: 12px;
    display: grid;
    gap: 10px;
    align-content: start;
}

.workspace-card h2 {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 15px;
}

#profileFriendRequests,
#profileFriendList,
#profileUserList,
#groupsList {
    max-height: 360px;
    overflow: auto;
}

.theme-picker {
    display: grid;
    gap: 6px;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--muted);
    letter-spacing: 0.1em;
}

.profile-line {
    border: 1.6px solid color-mix(in srgb, var(--line) 62%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    padding: 9px 11px;
    font-size: 14px;
}

.hidden-panel {
    display: none;
}

.admin-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.admin-nav {
    padding: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.admin-nav .nav-link {
    border: 1.6px solid color-mix(in srgb, var(--line) 58%, transparent);
    background: color-mix(in srgb, var(--surface-strong) 88%, transparent);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    padding: 8px 12px;
}

.admin-nav .nav-link.active {
    border-color: color-mix(in srgb, var(--accent-2) 75%, transparent);
    background: color-mix(in srgb, var(--accent-2) 16%, var(--surface-strong));
}

.admin-dashboard-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
}

.admin-stats-card {
    grid-column: 1 / -1;
}

.admin-overview-card {
    min-height: 220px;
}

.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 10px;
}

.admin-stat-card {
    border: 1.6px solid color-mix(in srgb, var(--line) 62%, transparent);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    padding: 11px;
    display: grid;
    gap: 6px;
}

.admin-stat-label {
    margin: 0;
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.admin-stat-value {
    margin: 0;
    font-size: clamp(20px, 2.5vw, 30px);
    font-weight: 800;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 10px;
}

.admin-card {
    border: 1.6px solid color-mix(in srgb, var(--line) 62%, transparent);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--surface-strong) 90%, transparent);
    padding: 11px;
    display: grid;
    gap: 8px;
}

.admin-card-title {
    font-weight: 700;
    font-size: 17px;
}

.admin-card-meta {
    color: var(--muted);
    font-size: 13px;
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(7px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1200px) {
    .workspace-shell,
    .admin-shell {
        width: min(1320px, 100% - 14px);
        margin: 8px auto;
    }

    .profile-grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "info"
            "requests"
            "friends"
            "search";
    }

    .groups-grid {
        grid-template-columns: 1fr;
    }

    .admin-dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 980px) {
    .mobile-only {
        display: grid;
    }

    .app-topbar {
        width: calc(100% - 12px);
        padding: 8px 10px;
        gap: 8px;
    }

    .app-topbar-brand h1 {
        font-size: clamp(22px, 6.6vw, 30px);
    }

    .app-topbar-user {
        min-width: auto;
        padding-right: 0;
    }

    .app-topbar-tools {
        justify-items: stretch;
    }

    .notification-panel {
        right: 0;
        left: auto;
        width: min(92vw, 420px);
    }

    .status-dot {
        display: none;
    }

    .app-shell {
        width: calc(100% - 12px);
        grid-template-columns: 1fr;
        padding: 0;
    }

    .sidebar {
        position: fixed;
        z-index: 60;
        top: 0;
        left: 0;
        width: min(84vw, 340px);
        height: 100dvh;
        border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
        transform: translateX(-105%);
        transition: transform 0.28s ease;
    }

    .chat-layout.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .chat-layout.sidebar-open .sidebar-backdrop {
        opacity: 1;
        pointer-events: auto;
    }

    .chat-panel {
        min-height: 0;
    }

    .chat-header,
    .messages,
    .composer-shell,
    .group-panel {
        border-radius: 14px;
    }

    .chat-header {
        padding: 10px 12px;
    }

    .chat-header h2 {
        font-size: clamp(22px, 7.8vw, 28px);
    }

    .chat-header-actions {
        margin-left: 0;
    }

    .message-form {
        grid-template-columns: 1fr;
    }

    .message-form button {
        width: 100%;
        height: 48px;
    }

    .composer-shell {
        grid-template-rows: auto auto;
        align-content: start;
    }

    .auth-shell {
        grid-template-columns: 1fr;
    }

    .auth-brand {
        border-right: 0;
        border-bottom: 1.8px solid color-mix(in srgb, var(--line) 40%, transparent);
    }

    .workspace-header,
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .workspace-actions,
    .admin-actions {
        justify-content: flex-start;
    }

    .admin-nav {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .auth-page {
        padding: 10px;
    }

    .workspace-shell,
    .admin-shell {
        width: calc(100% - 10px);
        margin: 5px auto;
        gap: 8px;
    }

    .app-topbar {
        width: calc(100% - 8px);
        padding: 8px;
    }

    .app-shell {
        width: calc(100% - 8px);
    }

    .topbar-subtitle {
        display: none;
    }

    .chat-header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .group-manage-form {
        grid-template-columns: 1fr;
    }

    .group-manage-form button {
        justify-self: stretch;
    }

    .workspace-header,
    .workspace-card,
    .admin-panel,
    .admin-header {
        border-radius: 14px;
    }

    .workspace-header h1,
    .admin-header h1 {
        font-size: clamp(26px, 9vw, 34px);
    }

    .bubble {
        max-width: 92%;
    }
}