:root, [data-theme="light"] {
    --bg: #f4f6fb;
    --card: #ffffff;
    --card-2: #eef1f8;
    --border: #dbe1ee;
    --text: #1b2333;
    --muted: #5b6577;
    --accent: #16a34a;
    --accent-2: #0284c7;
    --warn: #d97706;
    --danger: #dc2626;
    --radius: 12px;
}

[data-theme="dark"] {
    --bg: #0f172a;
    --card: #1e293b;
    --card-2: #172033;
    --border: #2c3a54;
    --text: #e6ecf5;
    --muted: #93a3b8;
    --accent: #22c55e;
    --accent-2: #38bdf8;
    --warn: #f59e0b;
    --danger: #f87171;
    --radius: 12px;
}

body { transition: background 0.15s ease, color 0.15s ease; }

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    border-left: 6px solid var(--accent);
    border-right: 6px solid var(--accent);
    border-bottom: 6px solid var(--accent);
    box-sizing: border-box;
}

/* Glowing 3D scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-2) var(--card-2);
}
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}
::-webkit-scrollbar-track {
    background: var(--card-2);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-2), var(--accent));
    border-radius: 10px;
    border: 2px solid var(--card-2);
    background-clip: padding-box;
    box-shadow: 0 0 8px rgba(2, 132, 199, 0.5), inset 0 1px 1px rgba(255,255,255,0.35);
    transition: box-shadow 0.2s ease;
}
::-webkit-scrollbar-thumb:hover {
    box-shadow: 0 0 14px rgba(2, 132, 199, 0.85), inset 0 1px 1px rgba(255,255,255,0.4);
}
::-webkit-scrollbar-corner {
    background: var(--card-2);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: linear-gradient(135deg, #15803d, #16a34a);
    border-bottom: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 10;
    flex-wrap: wrap;
    gap: 10px;
}

.brand {
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
}
.brand span { color: rgba(255,255,255,0.8); font-weight: 400; font-size: 0.85rem; }

nav a {
    color: #ffffff;
    text-decoration: none;
    margin-left: 16px;
    font-size: 0.92rem;
    padding: 7px 12px;
    border-radius: 8px;
}
nav a:hover { background: rgba(255,255,255,0.18); }
nav a.active { background: #ffffff; color: #15803d; font-weight: 700; }

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 22px 20px 60px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.stat {
    position: relative;
    background: linear-gradient(160deg, var(--card) 0%, var(--card-2) 100%);
    border: 1px solid var(--border);
    border-top: 3px solid var(--accent-2);
    border-radius: var(--radius);
    padding: 16px 18px;
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.06),
        0 6px 14px rgba(15, 23, 42, 0.07),
        inset 0 1px 0 rgba(255,255,255,0.4);
    transition: transform 0.25s cubic-bezier(.2,.8,.2,1), box-shadow 0.25s ease, border-color 0.25s ease;
    overflow: hidden;
}
.stat::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    padding: 1px;
    background: linear-gradient(135deg, var(--accent-2), transparent 45%, var(--accent) 100%);
    opacity: 0;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    transition: opacity 0.25s ease;
    pointer-events: none;
}
.stat:hover {
    transform: translateY(-5px) scale(1.015);
    box-shadow:
        0 2px 4px rgba(15, 23, 42, 0.08),
        0 18px 30px rgba(2, 132, 199, 0.16),
        0 0 0 1px rgba(2, 132, 199, 0.12),
        inset 0 1px 0 rgba(255,255,255,0.5);
    border-top-color: transparent;
}
.stat:hover::before { opacity: 1; }
.stat.green:hover::before { background: linear-gradient(135deg, var(--accent), transparent 45%, var(--accent-2) 100%); }
.stat.warn:hover::before { background: linear-gradient(135deg, var(--warn), transparent 45%, var(--accent-2) 100%); }
.stat.danger:hover::before { background: linear-gradient(135deg, var(--danger), transparent 45%, var(--accent-2) 100%); }
.stat.green { border-top-color: var(--accent); }
.stat.warn { border-top-color: var(--warn); }
.stat.danger { border-top-color: var(--danger); }
.stat .label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 1.6rem; font-weight: 700; margin-top: 4px; }
.stat.green .value { color: var(--accent); }
.stat.blue .value { color: var(--accent-2); }
.stat.warn .value { color: var(--warn); }
.stat.danger .value { color: var(--danger); }

.card {
    position: relative;
    background: linear-gradient(160deg, var(--card) 0%, var(--card-2) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-bottom: 20px;
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.05),
        0 8px 20px rgba(15, 23, 42, 0.07),
        inset 0 1px 0 rgba(255,255,255,0.35);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    padding: 1px;
    background: linear-gradient(135deg, var(--accent-2), transparent 50%, var(--accent) 100%);
    opacity: 0;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.card:hover {
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.06),
        0 10px 26px rgba(2, 132, 199, 0.1),
        0 0 0 1px rgba(2, 132, 199, 0.08),
        inset 0 1px 0 rgba(255,255,255,0.4);
}
.card:hover::before { opacity: 0.6; }
.card h2, .card h3 { margin-top: 0; }

.card { overflow: visible; }

.table-scroll {
    overflow: auto;
    max-height: 65vh;
    border-radius: 8px;
}

table {
    width: 100%;
    min-width: 460px;
    border-collapse: collapse;
    font-size: 0.92rem;
}
th, td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
th { color: var(--muted); font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em;
     position: sticky; top: 0; background: var(--card-2); z-index: 5;
     border-bottom: 2px solid var(--border); box-shadow: 0 1px 0 var(--border); }
tr:hover td { background: rgba(255,255,255,0.02); }

input, select, textarea {
    background: var(--card-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 0.92rem;
}
input[type="checkbox"] { width: 18px; height: 18px; }

label { font-size: 0.85rem; color: var(--muted); display: block; margin-bottom: 4px; }
.field { margin-bottom: 12px; }

button, .btn {
    background: var(--accent);
    color: #06210f;
    border: none;
    padding: 9px 18px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.92rem;
    text-decoration: none;
    display: inline-block;
}
button:hover, .btn:hover { filter: brightness(1.08); }
.btn.secondary { background: var(--card-2); color: var(--text); border: 1px solid var(--border); }
.btn.small { padding: 5px 10px; font-size: 0.8rem; }

.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge.active { background: rgba(34,197,94,0.15); color: var(--accent); }
.badge.inactive { background: rgba(248,113,113,0.15); color: var(--danger); }

.flash {
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 14px;
    font-size: 0.9rem;
}
.flash.success { background: rgba(34,197,94,0.12); color: var(--accent); border: 1px solid rgba(34,197,94,0.35); }
.flash.error { background: rgba(248,113,113,0.12); color: var(--danger); border: 1px solid rgba(248,113,113,0.35); }

.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 200px; }

.muted { color: var(--muted); font-size: 0.85rem; }
.date-picker { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }

a { color: var(--accent-2); }

.login-box {
    max-width: 380px;
    margin: 60px auto;
}

/* Bill viewer modal */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.65);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 720px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}
.modal-close {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
}
.modal-close:hover { background: var(--card-2); }
.modal-body {
    flex: 1;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card-2);
    min-height: 300px;
}
.modal-body img {
    max-width: 100%;
    max-height: 75vh;
    display: block;
}
.modal-body iframe {
    width: 100%;
    height: 75vh;
    border: none;
}
.modal-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
}

.bill-view-btn {
    background: none;
    border: none;
    color: var(--accent-2);
    cursor: pointer;
    padding: 0;
    font-size: inherit;
    text-decoration: underline;
}

.site-footer {
    text-align: center;
    padding: 16px 20px 22px;
    color: var(--accent);
    font-size: 0.88rem;
    font-weight: 700;
    border-top: 2px solid var(--accent);
    margin-top: 10px;
}
.site-footer a {
    color: var(--accent-2);
    font-weight: 700;
}
.site-footer .admin-badge {
    display: inline-block;
    margin-left: 10px;
    padding: 2px 10px;
    border-radius: 999px;
    background: rgba(22,163,74,0.15);
    color: var(--accent);
    font-weight: 600;
    font-size: 0.78rem;
}

/* ===================== Mobile responsiveness ===================== */
@media (max-width: 768px) {
    .container {
        padding: 16px 12px 50px;
    }

    .topbar {
        padding: 10px 14px;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .brand {
        font-size: 1rem;
    }
    .brand span {
        display: block;
        font-size: 0.75rem;
    }

    nav {
        display: flex;
        flex-wrap: wrap;
        gap: 4px;
        width: 100%;
    }
    nav a {
        margin-left: 0;
        padding: 7px 10px;
        font-size: 0.85rem;
        flex: 0 0 auto;
    }

    .grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 10px;
    }
    .stat {
        padding: 12px 14px;
    }
    .stat .value {
        font-size: 1.3rem;
    }

    .card {
        padding: 14px 14px;
        border-radius: 10px;
    }

    .row {
        flex-direction: column;
        gap: 10px;
    }
    .row > * {
        min-width: 0;
        width: 100%;
    }

    table {
        min-width: 420px;
        font-size: 0.85rem;
    }
    th, td {
        padding: 7px 8px;
    }

    button, .btn {
        width: 100%;
        text-align: center;
        box-sizing: border-box;
    }
    .btn.small {
        width: auto;
        display: inline-block;
    }

    .date-picker {
        flex-wrap: wrap;
    }

    .modal-box {
        max-width: 96vw;
        max-height: 92vh;
    }
    .modal-body iframe {
        height: 60vh;
    }

    .login-box {
        margin: 30px auto;
        max-width: 100%;
    }
}

@media (max-width: 420px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat .value {
        font-size: 1.15rem;
    }
}

/* Mess Rules card grid — modern 3D / glow style */
.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
    margin-top: 8px;
    perspective: 1000px;
}
.rule-card {
    position: relative;
    display: flex;
    gap: 12px;
    background: linear-gradient(160deg, var(--card) 0%, var(--card-2) 100%);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px 18px;
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.06),
        0 8px 16px rgba(15, 23, 42, 0.08),
        inset 0 1px 0 rgba(255,255,255,0.4);
    transition: transform 0.25s cubic-bezier(.2,.8,.2,1), box-shadow 0.25s ease, border-color 0.25s ease;
    overflow: hidden;
}
.rule-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 14px;
    padding: 1px;
    background: linear-gradient(135deg, var(--accent-2), transparent 40%, var(--accent) 100%);
    opacity: 0;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    transition: opacity 0.25s ease;
    pointer-events: none;
}
.rule-card:hover {
    transform: translateY(-6px) scale(1.015) rotateX(1.5deg);
    box-shadow:
        0 2px 4px rgba(15, 23, 42, 0.08),
        0 20px 34px rgba(2, 132, 199, 0.18),
        0 0 0 1px rgba(2, 132, 199, 0.15),
        inset 0 1px 0 rgba(255,255,255,0.5);
    border-color: transparent;
}
.rule-card:hover::before {
    opacity: 1;
}
.rule-number {
    flex: 0 0 auto;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-2), var(--accent));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.92rem;
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.35), 0 0 0 4px rgba(2, 132, 199, 0.08);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.rule-card:hover .rule-number {
    box-shadow: 0 4px 16px rgba(2, 132, 199, 0.55), 0 0 0 6px rgba(2, 132, 199, 0.14);
    transform: scale(1.08);
}
.rule-body { flex: 1; min-width: 0; }
.rule-title {
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}
.rule-points {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
    font-size: 0.88rem;
    line-height: 1.5;
}
.rule-points li { margin-bottom: 3px; }
.rule-note {
    margin-top: 14px;
    padding: 10px 14px;
    border-radius: 8px;
    background: rgba(217, 119, 6, 0.1);
    color: var(--warn);
    font-size: 0.88rem;
    border: 1px solid rgba(217, 119, 6, 0.25);
}
@media (max-width: 480px) {
    .rules-grid { grid-template-columns: 1fr; }
}

/* Searchable member dropdown (click to see full list, type to filter) */
.member-dropdown-wrap { position: relative; }
.member-dropdown-list {
    display: none;
    position: absolute;
    z-index: 50;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    max-height: 220px;
    overflow-y: auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.15);
}
.member-dropdown-item {
    padding: 9px 12px;
    cursor: pointer;
    font-size: 0.92rem;
}
.member-dropdown-item:hover {
    background: var(--card-2);
}
.member-dropdown-empty {
    padding: 9px 12px;
    color: var(--muted);
    font-size: 0.88rem;
}

/* ===================== Print (Generate Bill etc.) ===================== */
@media print {
    @page {
        size: A4 landscape;
        margin: 8mm;
    }
    body {
        border: none !important;
        background: #fff !important;
        color: #000 !important;
    }
    .topbar, .site-footer, .no-print, #themeToggle {
        display: none !important;
    }
    .container {
        padding: 0 !important;
        max-width: 100% !important;
    }
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
        page-break-inside: avoid;
    }
    .card::before { display: none !important; }
    .grid {
        page-break-inside: avoid;
    }
    .stat {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
    .stat::before { display: none !important; }
    .table-scroll {
        max-height: none !important;
        overflow: visible !important;
    }
    table {
        width: 100% !important;
        min-width: 0 !important;
        font-size: 10px !important;
    }
    th {
        position: static !important;
        background: #eee !important;
        color: #000 !important;
        box-shadow: none !important;
    }
    td, th {
        padding: 4px 6px !important;
        color: #000 !important;
    }
    a { color: #000 !important; text-decoration: none !important; }
}