:root {
    --navy: #0D1B2A;
    --navy-light: #14273d;
    --teal: #00BCD4;
    --teal-dark: #00949f;
    --amber: #F5A623;
    --amber-dark: #d68c0f;

    --bg: #f2f5f7;
    --card: #ffffff;
    --border: #e1e7ec;
    --text: #16222f;
    --muted: #64748b;
    --primary: var(--teal-dark);
    --primary-light: #e2f8fb;
    --danger: #c0392b;
    --danger-light: #fbeae7;
    --credit: #0b8f7e;
    --debit: #c0392b;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

/* ===== Top navigation - navy bar with teal/amber accents ===== */
.topnav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(90deg, var(--navy) 0%, var(--navy-light) 100%);
    border-bottom: 3px solid var(--amber);
    padding: 12px 22px;
    flex-wrap: wrap;
    gap: 10px;
    box-shadow: 0 2px 8px rgba(13,27,42,0.15);
}
.topnav .brand {
    font-weight: 800;
    font-size: 19px;
    color: #ffffff;
    letter-spacing: .01em;
}
.topnav .brand::before {
    content: "●";
    color: var(--teal);
    margin-right: 8px;
    font-size: 14px;
}
.topnav .links a {
    margin-right: 16px;
    text-decoration: none;
    color: #cfe3ec;
    font-size: 13px;
    font-weight: 500;
    padding: 4px 2px;
    border-bottom: 2px solid transparent;
    transition: color .15s, border-color .15s;
}
.topnav .links a:hover { color: var(--teal); border-bottom-color: var(--teal); }
.topnav .user { font-size: 13px; display: flex; align-items: center; gap: 12px; color: #cfe3ec; }
.topnav .user span strong, .topnav .user span { color: #ffffff; }
.topnav .user a { color: var(--amber); text-decoration: none; font-weight: 600; }
.topnav .user a:hover { color: #ffcf7d; }

/* ===== Colorful nav tabs ===== */
.topnav .links { display: flex; flex-wrap: wrap; gap: 8px; }
.tab {
    display: inline-block;
    padding: 7px 14px !important;
    border-radius: 999px;
    color: #ffffff !important;
    font-weight: 700 !important;
    font-size: 12.5px !important;
    border-bottom: none !important;
    margin-right: 0 !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    transition: transform .1s, filter .15s;
}
.tab:hover { filter: brightness(1.12); transform: translateY(-1px); }
.tab-slate  { background: #475569; }
.tab-blue   { background: #2563EB; }
.tab-teal   { background: #0891B2; }
.tab-purple { background: #7C3AED; }
.tab-orange { background: #F97316; }
.tab-pink   { background: #DB2777; }
.tab-indigo { background: #4F46E5; }
.tab-green  { background: #16A34A; }
.tab-amber  { background: #D97706; }

/* ===== Colorful pill amounts (Debit/Credit as bright boxes) ===== */
.pill {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 12.5px;
    color: #ffffff;
}
.pill-credit { background: #16A34A; }
.pill-debit  { background: #F97316; }

.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--teal);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(13,27,42,0.06);
}

h1 { font-size: 23px; margin: 0 0 16px; color: var(--navy); font-weight: 800; }
h2 { font-size: 16px; margin: 0 0 14px; color: var(--navy); font-weight: 700; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }

.stat {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    border-top: 3px solid var(--amber);
}
.stat .label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; }
.stat .value { font-size: 24px; font-weight: 800; margin-top: 6px; color: var(--navy); }
.stat .value.pos { color: var(--credit); }
.stat .value.neg { color: var(--debit); }

/* ===== Bold colorful dashboard tiles ===== */
.stat-green, .stat-orange, .stat-blue {
    border: none;
    box-shadow: 0 3px 10px rgba(0,0,0,0.12);
}
.stat-green  { background: linear-gradient(135deg, #16A34A, #0d8a3c); }
.stat-orange { background: linear-gradient(135deg, #F97316, #ea6a0a); }
.stat-blue   { background: linear-gradient(135deg, #2563EB, #1d4fd1); }
.stat-green .label, .stat-orange .label, .stat-blue .label { color: rgba(255,255,255,0.85); }
.stat-green .value, .stat-orange .value, .stat-blue .value { color: #ffffff; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th {
    color: var(--navy);
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .04em;
    background: #f6f9fa;
    border-bottom: 2px solid var(--teal);
}
tr:hover td { background: #f7fcfd; }
.credit { color: var(--credit); font-weight: 700; }
.debit { color: var(--debit); font-weight: 700; }

form label { display: block; margin: 12px 0 5px; font-size: 12px; color: var(--navy); font-weight: 600; }
input, select, textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 7px;
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(0,188,212,0.15);
}
textarea { resize: vertical; }

button, .btn {
    display: inline-block;
    padding: 9px 18px;
    background: var(--teal-dark);
    color: #fff;
    border: none;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    margin-top: 14px;
    transition: background .15s, transform .1s;
}
button:hover, .btn:hover { background: var(--teal); }
button:active, .btn:active { transform: translateY(1px); }
.btn.secondary { background: var(--navy); }
.btn.secondary:hover { background: var(--navy-light); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #a5311f; }
.btn.btn-success { background: #16A34A; }
.btn.btn-success:hover { background: #128a3e; }
.btn.small { padding: 5px 12px; font-size: 12px; margin-top: 0; margin-right: 4px; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 700; letter-spacing: .02em; }
.badge.na { background: #eef1f3; color: #64748b; }
.badge.pending { background: #fff2df; color: var(--amber-dark); }
.badge.submitted { background: #e2f0ff; color: #1d4ed8; }
.badge.under_review { background: #fef6d8; color: #92660a; }
.badge.approved { background: #e2f8fb; color: var(--teal-dark); }
.badge.reimbursed, .badge.paid { background: #e2f7f0; color: var(--credit); }
.badge.partial { background: #fef0d9; color: var(--amber-dark); }
.badge.rejected { background: var(--danger-light); color: var(--danger); }

.filters { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; align-items: flex-end; }
.filters > div { flex: 1; min-width: 130px; }

.error { background: var(--danger-light); color: var(--danger); padding: 11px 15px; border-radius: 7px; margin-bottom: 16px; font-size: 13px; border-left: 3px solid var(--danger); }
.success { background: #e2f7f0; color: var(--credit); padding: 11px 15px; border-radius: 7px; margin-bottom: 16px; font-size: 13px; border-left: 3px solid var(--credit); }

.login-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 60%, #0a2233 100%);
}
.login-box { width: 340px; border-left: 4px solid var(--amber); }
.login-box h1 { color: var(--navy); }

a.link { color: var(--teal-dark); font-weight: 600; text-decoration: none; }
a.link:hover { text-decoration: underline; }
.muted { color: var(--muted); font-size: 12px; }
.right { text-align: right; }
.mt0 { margin-top: 0; }

/* ===== Mobile responsiveness ===== */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 768px) {
    .topnav {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 16px;
    }
    .topnav .brand { font-size: 16px; margin-bottom: 8px; }
    .topnav .links {
        display: flex;
        flex-wrap: wrap;
        gap: 4px 12px;
        width: 100%;
    }
    .topnav .links a {
        margin-right: 0;
        padding: 4px 0;
        font-size: 13px;
    }
    .tab { padding: 6px 12px !important; font-size: 11.5px !important; }
    .topnav .user {
        width: 100%;
        justify-content: space-between;
        margin-top: 10px;
        padding-top: 10px;
        border-top: 1px solid rgba(255,255,255,0.15);
    }

    .container { margin: 12px auto; padding: 0 10px; }
    .card { padding: 14px; }
    h1 { font-size: 19px; }

    .grid { grid-template-columns: 1fr; gap: 10px; }

    table { font-size: 12px; }
    th, td { padding: 8px 8px; }

    .filters { flex-direction: column; align-items: stretch; }
    .filters > div { min-width: 0; }

    button, .btn { width: 100%; text-align: center; }
    .btn.small { width: auto; }

    input, select, textarea { font-size: 16px; } /* prevents iOS auto-zoom on focus */

    .login-box { width: 90%; max-width: 340px; }
}