@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=DM+Sans:wght@400;500;600;700&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'DM Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #0a0a0f;
    color: #e0e0e0;
    min-height: 100vh;
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 255, 0.03), transparent),
        radial-gradient(circle at 90% 80%, rgba(0, 212, 255, 0.015), transparent);
}

/* Login page */
#login-page {
    display: flex; align-items: center; justify-content: center;
    height: 100vh;
}
#login-box {
    text-align: center; padding: 48px; border-radius: 20px;
    background: linear-gradient(160deg, #111125, #0d0d1a);
    border: 1px solid #1a1a33;
    width: 400px;
    box-shadow:
        0 24px 80px rgba(0, 0, 0, 0.5),
        0 0 120px -40px rgba(0, 212, 255, 0.06);
}
#login-box h1 {
    color: #00d4ff; font-size: 2rem; margin-bottom: 6px;
    font-weight: 700; letter-spacing: -0.5px;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}
#login-box p { color: #555; margin-bottom: 28px; font-size: 13px; letter-spacing: 0.4px; }
#login-box input {
    width: 100%; padding: 12px 16px; border-radius: 8px;
    border: 1px solid #333; background: #1a1a2e; color: #fff;
    font-size: 15px; margin-bottom: 14px; outline: none;
    transition: border-color 0.2s;
}
#login-box input:focus { border-color: #00d4ff; }
#login-box button {
    width: 100%; padding: 12px; border-radius: 8px; border: none;
    background: #00d4ff; color: #000; font-weight: 600; font-size: 15px;
    cursor: pointer; transition: background 0.2s;
}
#login-box button:hover { background: #00b8d4; }
#login-error { color: #ff4444; font-size: 13px; margin-top: 12px; min-height: 18px; }

/* Dashboard */
#dashboard-page { max-width: 1200px; margin: 0 auto; padding: 24px; }

#header {
    display: flex; align-items: center; gap: 16px;
    padding-bottom: 20px; border-bottom: 1px solid #222; margin-bottom: 24px;
    flex-wrap: wrap;
}
#header h1 {
    color: #00d4ff; font-size: 1.6rem; font-weight: 700;
    letter-spacing: -0.5px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}
#subtitle { color: #666; font-size: 14px; flex: 1; }
#status-dot { width: 8px; height: 8px; border-radius: 50%; background: #666; }
#status-text { color: #888; font-size: 13px; }
#last-refresh { color: #555; font-size: 11px; font-family: monospace; }
#logout-btn {
    padding: 6px 14px; border-radius: 6px; border: 1px solid #444;
    background: transparent; color: #888; cursor: pointer; font-size: 12px;
}
#logout-btn:hover { border-color: #ff4444; color: #ff4444; }

/* Stats */
#stats-bar { display: grid; grid-template-columns: repeat(6,1fr); gap: 14px; margin-bottom: 20px; }
.stat-card {
    background: linear-gradient(160deg, #111125, #0d0d18);
    border: 1px solid #1a1a30;
    border-radius: 14px;
    padding: 20px 18px;
    text-align: center;
    transition: transform 0.2s, border-color 0.3s, box-shadow 0.3s;
    cursor: default;
}
.stat-card:hover {
    transform: translateY(-2px);
    border-color: #00d4ff33;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.05);
}
.stat-value {
    font-size: 1.6rem; font-weight: 700; color: #00d4ff;
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    letter-spacing: -0.5px;
}
.stat-label {
    font-size: 10px; color: #666;
    margin-top: 6px; letter-spacing: 0.4px; font-weight: 500;
}

/* Server info bar */
#server-info-bar {
    display: flex; gap: 24px; margin-bottom: 20px;
    padding: 14px 20px;
    background: linear-gradient(90deg, #0d0d1a, #111125, #0d0d1a);
    border: 1px solid #1a1a30;
    border-radius: 14px;
}
.server-info-item { display: flex; align-items: center; gap: 8px; }
.server-info-label { font-size: 11px; color: #555; letter-spacing: 0.4px; font-weight: 500; }
.server-info-value {
    font-size: 14px; color: #00d4ff; font-weight: 600;
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
}

/* Tab bar */
#tab-bar {
    display: flex; gap: 4px; margin-bottom: 20px;
    padding: 4px;
    background: #0d0d18;
    border: 1px solid #1a1a30;
    border-radius: 12px;
    width: fit-content;
}
.tab-btn {
    padding: 8px 24px; border-radius: 10px; border: none;
    background: transparent; color: #666; cursor: pointer;
    font-size: 13px; font-weight: 600;
    font-family: 'DM Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
    letter-spacing: 0.3px;
    transition: all 0.2s;
}
.tab-btn:hover { color: #aaa; background: #111125; }
.tab-btn.tab-active {
    background: linear-gradient(135deg, #00d4ff22, #00d4ff11);
    color: #00d4ff;
    border: 1px solid #00d4ff33;
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.06);
}

/* STUN tab stats */
#stun-stats-bar {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 14px; margin-bottom: 20px;
}
#stun-clients-container h2 {
    font-size: 13px; color: #888;
    margin-bottom: 14px; letter-spacing: 0.4px;
}

/* Search bar — command palette style */
#search-bar {
    position: relative;
    margin-bottom: 20px;
}
#search-bar::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 14px;
    padding: 1px;
    background: linear-gradient(135deg, #00d4ff22, #111122, #00d4ff11);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    transition: background 0.4s ease;
}
#search-bar:focus-within::before {
    background: linear-gradient(135deg, #00d4ff66, #00d4ff22, #00d4ff44);
}
#search-bar::after {
    content: '';
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23555' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    pointer-events: none;
    transition: opacity 0.2s;
    opacity: 0.6;
}
#search-bar:focus-within::after {
    opacity: 1;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2300d4ff' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
}
#search-input {
    width: 100%;
    padding: 14px 18px 14px 44px;
    border-radius: 14px;
    border: none;
    background: #0d0d1a;
    color: #e8e8f0;
    font-size: 14px;
    font-family: 'DM Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    letter-spacing: 0.3px;
    outline: none;
    transition: background 0.3s, box-shadow 0.4s;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}
#search-input:focus {
    background: #0f0f22;
    box-shadow:
        0 0 0 1px rgba(0, 212, 255, 0.15),
        0 4px 24px rgba(0, 212, 255, 0.06),
        0 0 60px -10px rgba(0, 212, 255, 0.08);
}
#search-input::placeholder {
    color: #3a3a55;
    font-style: normal;
    letter-spacing: 0.3px;
}

/* Create room bar */
#create-room-bar {
    display: flex; gap: 10px; margin-bottom: 24px;
    padding: 16px; background: #111122; border: 1px solid #222; border-radius: 12px;
}
#create-room-bar input {
    flex: 1; padding: 10px 14px; border-radius: 8px;
    border: 1px solid #333; background: #1a1a2e; color: #fff;
    font-size: 14px; outline: none;
}
#create-room-bar input:focus { border-color: #00d4ff; }
#create-room-btn {
    padding: 10px 20px; border-radius: 8px; border: none;
    background: #00d4ff; color: #000; font-weight: 600; font-size: 14px;
    cursor: pointer; white-space: nowrap;
}
#create-room-btn:hover { background: #00b8d4; }

/* Rooms */
#rooms-container h2 {
    font-size: 13px; color: #888;
    margin-bottom: 14px; letter-spacing: 0.4px;
}
.room-card {
    background: linear-gradient(160deg, #111125, #0d0d18);
    border: 1px solid #1a1a30;
    border-radius: 14px;
    padding: 20px; margin-bottom: 16px;
    transition: border-color 0.3s;
}
.room-card:hover {
    border-color: #222244;
}
.room-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.room-name { font-size: 17px; font-weight: 600; color: #fff; }
.room-badge {
    font-size: 11px; padding: 3px 10px; border-radius: 10px; font-weight: 600;
}
.badge-protected { background: #ff980033; color: #ff9800; border: 1px solid #ff980055; }
.badge-open { background: #00c85333; color: #00c853; border: 1px solid #00c85355; }
.badge-persistent { background: #2196f322; color: #64b5f6; border: 1px solid #2196f344; }
.badge-temp { background: #9c27b022; color: #ce93d8; border: 1px solid #9c27b044; }
.room-peer-count { color: #888; font-size: 13px; margin-left: auto; }
.room-traffic { color: #00d4ff; font-size: 12px; font-family: 'JetBrains Mono', 'SF Mono', monospace; opacity: 0.8; }
.room-created { color: #666; font-size: 11px; font-style: normal; }
.lock-toggle {
    padding: 4px 10px; border-radius: 6px; border: 1px solid; cursor: pointer; font-size: 11px;
    font-weight: 600; transition: all 0.15s;
}
.lock-on { border-color: #ff444444; color: #ff6666; background: #ff444411; }
.lock-on:hover { background: #ff444433; }
.lock-off { border-color: #00c85344; color: #00c853; background: #00c85311; }
.lock-off:hover { background: #00c85333; }
.relay-toggle {
    padding: 4px 10px; border-radius: 6px; border: 1px solid; cursor: pointer; font-size: 11px;
    font-weight: 600; transition: all 0.15s;
}
.relay-on { border-color: #00c85344; color: #00c853; background: #00c85311; }
.relay-on:hover { background: #00c85333; }
.relay-off { border-color: #ff444444; color: #ff6666; background: #ff444411; }
.relay-off:hover { background: #ff444433; }
.room-delete {
    padding: 4px 10px; border-radius: 6px; border: 1px solid #ff444444;
    background: transparent; color: #ff4444; cursor: pointer; font-size: 11px;
}
.room-delete:hover { background: #ff4444; color: #fff; }

/* Peer table */
.peer-table { width: 100%; border-collapse: collapse; }
.peer-table th {
    text-align: left; font-size: 11px; color: #666;
    padding: 8px 12px; border-bottom: 1px solid #222;
}
.peer-table td { padding: 9px 12px; border-bottom: 1px solid #1a1a2e; font-size: 13px; }
.peer-table tr:last-child td { border-bottom: none; }
.peer-id { font-family: 'JetBrains Mono', 'SF Mono', monospace; color: #8888aa; font-size: 12px; }
.peer-name-cell { color: #fff; }
.peer-endpoint { font-family: 'JetBrains Mono', 'SF Mono', monospace; color: #6a6a88; font-size: 12px; }
.peer-duration { color: #888; font-size: 12px; white-space: nowrap; }
.peer-location { font-size: 12px; white-space: nowrap; }
.ip-location { color: #b8b8cc; }
.ip-asn {
    color: #666; font-size: 10px;
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    margin-left: 4px;
    padding: 1px 5px; border-radius: 3px;
    background: #1a1a30; border: 1px solid #222244;
}

.mode-badge {
    font-size: 12px; padding: 4px 10px; border-radius: 6px; font-weight: 600;
    display: inline-flex; align-items: center; gap: 4px;
}
.mode-direct { background: #00c85322; color: #00c853; border: 1px solid #00c85344; }
.mode-relay { background: #ff980022; color: #ff9800; border: 1px solid #ff980044; }
.mode-connecting { background: #66666622; color: #888; border: 1px solid #66666644; }

/* NAT type badges */
.nat-badge {
    display: inline-block; padding: 2px 8px; border-radius: 4px;
    font-size: 11px; font-weight: 600; letter-spacing: 0.3px;
}
.nat-1 { background: #00c85322; color: #00c853; border: 1px solid #00c85344; }
.nat-2 { background: #00c85322; color: #00c853; border: 1px solid #00c85344; }
.nat-3 { background: #ff980022; color: #ff9800; border: 1px solid #ff980044; }
.nat-4 { background: #ff444422; color: #ff4444; border: 1px solid #ff444444; }

/* Feature badges */
.feature-badge {
    display: inline-block; padding: 2px 6px; border-radius: 4px; font-size: 11px; margin: 1px 2px;
}
.feature-vpn { background: #2196f322; color: #64b5f6; border: 1px solid #2196f344; }
.feature-fwd { background: #9c27b022; color: #ce93d8; border: 1px solid #9c27b044; }
.feature-route { background: #00968822; color: #4db6ac; border: 1px solid #00968844; }
.peer-features { white-space: nowrap; }

.empty-state { text-align: center; color: #444; padding: 50px 20px; font-size: 15px; }

/* Ban / Unban */
.peer-actions { white-space: nowrap; display: flex; gap: 4px; }
.peer-kick-btn {
    padding: 3px 9px; border-radius: 5px; border: 1px solid #ff980044;
    background: transparent; color: #ff9800; cursor: pointer; font-size: 11px;
    transition: all 0.15s;
}
.peer-kick-btn:hover { background: #ff9800; color: #000; border-color: #ff9800; }
.peer-ban-btn {
    padding: 3px 9px; border-radius: 5px; border: 1px solid #ff444444;
    background: transparent; color: #ff6666; cursor: pointer; font-size: 11px;
    transition: all 0.15s;
}
.peer-ban-btn:hover { background: #ff4444; color: #fff; border-color: #ff4444; }

.banned-section {
    margin-top: 12px; padding: 12px 14px;
    background: #1a0a0a; border: 1px solid #ff444422; border-radius: 8px;
}
.banned-title {
    font-size: 11px; color: #ff6666;
    letter-spacing: 0.4px; margin-bottom: 8px; font-weight: 600;
}
.banned-list { display: flex; flex-wrap: wrap; gap: 8px; }
.banned-entry {
    display: inline-flex; align-items: center; gap: 6px;
    background: #ff444411; border: 1px solid #ff444433;
    border-radius: 6px; padding: 4px 8px;
}
.banned-id { font-family: monospace; font-size: 12px; color: #ff8888; }
.peer-unban-btn {
    padding: 2px 7px; border-radius: 4px; border: 1px solid #00c85344;
    background: transparent; color: #00c853; cursor: pointer; font-size: 11px;
}
.peer-unban-btn:hover { background: #00c853; color: #000; }

/* Responsive */
@media (max-width: 1024px) {
    #stats-bar { grid-template-columns: repeat(3,1fr); }
}

@media (max-width: 768px) {
    #stats-bar { grid-template-columns: repeat(2,1fr); }
    #dashboard-page { padding: 16px; }
    #create-room-bar { flex-direction: column; }
    #server-info-bar { flex-direction: column; gap: 10px; }
    .stat-value { font-size: 1.3rem; }

    .peer-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .peer-table thead { display: none; }
    .peer-table tbody { display: block; }
    .peer-table tr {
        display: flex; flex-wrap: wrap; gap: 6px 12px;
        padding: 10px 0; border-bottom: 1px solid #1a1a2e;
    }
    .peer-table tr:last-child { border-bottom: none; }
    .peer-table td {
        border-bottom: none; padding: 2px 0; font-size: 12px;
    }
    .peer-table td::before {
        content: attr(data-label);
        color: #666; font-size: 10px; text-transform: uppercase;
        display: block;
    }
    .room-header { gap: 8px; }
    .room-peer-count { margin-left: 0; }
}

@media (max-width: 480px) {
    #stats-bar { grid-template-columns: 1fr 1fr; gap: 8px; }
    .stat-card { padding: 12px; }
    .stat-value { font-size: 1.1rem; }
    #header { gap: 8px; }
    #header h1 { font-size: 1.3rem; }
}