* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: system-ui, Arial, sans-serif;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
    color: #111827;
}

/* ================= LAYOUT ================= */

.admin-shell {
    padding: 24px;
    display: flex;
    justify-content: center;
}

.admin-card {
    width: 100%;
    max-width: 1100px;
}

/* ================= HEADER ================= */

.topline {
    margin-bottom: 20px;
}

.brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    font-size: 26px;
    font-weight: 800;
    color: #4f46e5;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 20px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ================= CARDS ================= */

.card {
    background: #fff;
    border-radius: 18px;
    padding: 20px;
    border: 1px solid #e5e7eb;
    margin-bottom: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* ================= GRID ================= */

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ================= BUTTONS ================= */

.primary-btn,
.secondary-btn,
.danger-btn {
    border: none;
    border-radius: 12px;
    padding: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.2s ease;
}

.primary-btn {
    background: #111827;
    color: #fff;
}

.primary-btn:hover {
    background: #000;
}

.secondary-btn {
    background: #eef2ff;
    color: #3730a3;
}

.secondary-btn:hover {
    background: #dfe5ff;
}

.danger-btn {
    background: #dc2626;
    color: #fff;
}

.danger-btn:hover {
    background: #b91c1c;
}

/* ================= INPUTS ================= */

input {
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    border: 1px solid #d1d5db;
    margin-top: 6px;
}

/* ================= ACTIONS ================= */

.actions {
    margin-top: 10px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.actions.two button {
    flex: 1;
}

/* ================= QR ================= */

.qr-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 10px;
    flex-wrap: wrap;
}

#qrReg {
    width: 120px;
    height: 120px;
    object-fit: contain;
}

/* ================= TEXT ================= */

.small {
    font-size: 13px;
}

.muted {
    color: #6b7280;
}

.mono {
    font-family: monospace;
}

.pill {
    padding: 6px 12px;
    border-radius: 999px;
    background: #f3f4f6;
    font-size: 12px;
}

/* ================= VIDEO ================= */

video {
    width: 100%;
    border-radius: 16px;
    margin-top: 20px;
    background: #000;
}

/* ================= LOG ================= */

pre#log {
    margin-top: 20px;
    background: #111827;
    color: #f9fafb;
    padding: 16px;
    border-radius: 16px;
    overflow: auto;
    max-height: 300px;
}

/* ================= ROOM PANEL ================= */

.rooms-box {
    height: 235px;
    max-height: 235px;

    overflow-y: auto;
    overflow-x: hidden;

    border: 1px solid #e5e7eb;
    border-radius: 14px;

    padding: 8px;
    margin-top: 12px;

    background: #fafafa;
}

/* scrollbar */

.rooms-box::-webkit-scrollbar {
    width: 8px;
}

.rooms-box::-webkit-scrollbar-thumb {
    background: #c7d2fe;
    border-radius: 999px;
}

.rooms-box::-webkit-scrollbar-track {
    background: transparent;
}

/* rows */

.room-row {
    display: grid;

    grid-template-columns:
        90px
        85px
        95px
        100px
        75px;

    gap: 8px;

    align-items: center;

    width: 100%;

    height: 42px;
    min-height: 42px;
    max-height: 42px;

    padding: 0;

    border-bottom: 1px solid #e5e7eb;
}

.room-row:last-child {
    border-bottom: none;
}

/* texts */

.room-code {
    font-weight: 800;
    white-space: nowrap;
}

.room-members {
    white-space: nowrap;
    font-size: 14px;
    color: #374151;
}

/* buttons */

.room-row button {
    width: 100%;

    height: 34px;
    min-height: 34px;

    padding: 0;

    display: flex;
    align-items: center;
    justify-content: center;

    white-space: nowrap;

    border-radius: 10px;
}

/* ================= RESPONSIVE ================= */

@media (max-width: 900px) {

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

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

#roomsList {
    height: 235px !important;
    max-height: 235px !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    margin-top: 12px !important;
    padding: 8px !important;
    border: 1px solid #e5e7eb !important;
    border-radius: 14px !important;
    background: #fafafa !important;
}

#roomsList .room-row {
    display: grid !important;
    grid-template-columns: 100px 95px 105px 115px 80px !important;
    column-gap: 8px !important;
    align-items: center !important;
    height: 42px !important;
    min-height: 42px !important;
    max-height: 42px !important;
}

#roomsList .room-code {
    font-weight: 800 !important;
    white-space: nowrap !important;
    line-height: 34px !important;
}

#roomsList .room-members {
    white-space: nowrap !important;
    font-size: 14px !important;
    line-height: 34px !important;
    color: #374151 !important;
}

#roomsList .room-action {
    all: unset !important;
    box-sizing: border-box !important;
    height: 34px !important;
    width: 100% !important;
    border-radius: 10px !important;
    font-weight: 700 !important;
    font-size: 14px !important;
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    white-space: nowrap !important;
}

#roomsList .room-select,
#roomsList .room-open {
    background: #eef2ff !important;
    color: #3730a3 !important;
}

#roomsList .room-delete {
    background: #dc2626 !important;
    color: white !important;
}