/* ════════════════════════════════════════════════════════════
   BillingDesk — Main Stylesheet
   A clean, professional accounting interface
   ════════════════════════════════════════════════════════════ */

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

:root {
  /* === THEME COLORS (Your palette) === */
  --saffron:       #C95F1A;
  --saffron-light: #E8813A;
  --saffron-pale:  #FDF0E6;
  --ochre:         #A64A0A;
  --gold:          #D4963A;
  --gold-light:    #F5D9A0;
  --turmeric:      #E8B84B;
  --ink:           #1C1208;
  --ink-mid:       #3D2B0E;
  --ink-soft:      #6B4C22;
  --parchment:     #FBF6EF;
  --parchment-2:   #F5EDD8;
  --stone:         #E9E0D0;
  --stone-dark:    #CFC3AD;
  --white:         #FFFDF9;
  --red-soft:      #C0392B;
  --green-soft:    #2D7D46;


  /* === SEMANTIC MAPPING (IMPORTANT) === */
  --bg:            var(--parchment);
  --surface:       var(--white);
  --surface-hover: var(--parchment-2);

  --border:        var(--stone);
  --border-light:  var(--stone-dark);

  --accent:        var(--saffron);
  --accent-hover:  var(--saffron-light);
  --accent-soft:   rgba(201, 95, 26, 0.1);

  --green:         var(--green-soft);
  --green-soft-bg: rgba(45,125,70,0.1);
  
  --white:         var(--white);
  --white-soft-bg: rgba(45,125,70,0.1);

  --red:           var(--red-soft);
  --red-soft-bg:   rgba(192,57,43,0.1);

  --amber:         var(--turmeric);
  --amber-soft:    rgba(232,184,75,0.15);

  --purple:        var(--gold);
  --purple-soft:   rgba(212,150,58,0.12);

  --text:          var(--ink);
  --text-muted:    var(--ink-soft);
  --text-dim:      var(--ink-mid);

  /* === UI TOKENS === */
  --radius:        10px;
  --radius-lg:     14px;

  --shadow:        0 4px 24px rgba(100, 60, 0, 0.12);

  /* === TYPOGRAPHY === */
  --font-body:  'DM Sans', sans-serif;
  --font-serif: 'Libre Baskerville', serif;
  --font-deva:  'Noto Sans Devanagari', sans-serif;

  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border-light); border-radius:3px; }

/* ── Layout ────────────────────────────────── */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ───────────────────────────────── */
.sidebar {
    width: 240px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-brand {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-brand .logo {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 17px;
    color: #fff;
}

.sidebar-brand h1 {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.sidebar-brand small {
    display: block;
    font-size: 11px;
    color: var(--text-dim);
    font-weight: 400;
}

.sidebar-nav {
    flex: 1;
    padding: 14px 10px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
    margin-bottom: 2px;
}

.sidebar-nav a:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.sidebar-nav a.active {
    background: var(--accent-soft);
    color: var(--accent);
}

.sidebar-nav a svg { width:18px; height:18px; stroke:currentColor; fill:none; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    font-size: 11px;
    color: var(--text-dim);
}

/* ── Main Content ──────────────────────────── */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 32px;
    min-height: 100vh;
}

/* ── Page Header ───────────────────────────── */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 4px;
}

.page-header p {
    color: var(--text-muted);
    font-size: 14px;
}

/* ── Cards ─────────────────────────────────── */
.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 20px;
}

.card.no-pad { padding: 0; }

.stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg { width:20px; height:20px; stroke-width:2; fill:none; stroke-linecap:round; stroke-linejoin:round; }

.stat-label { font-size:12px; color:var(--text-muted); margin-bottom:2px; }
.stat-value { font-size:22px; font-weight:700; }

/* ── Grid layouts ──────────────────────────── */
.grid-4 { display:grid; grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); gap:16px; }
.grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.grid-3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:16px; }

/* ── Tables ────────────────────────────────── */
.data-table { width:100%; border-collapse:collapse; }
.data-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border);
}
.data-table th.right { text-align:right; }
.data-table th.center { text-align:center; }

.data-table td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.data-table tr:hover { background: var(--surface-hover); }
.data-table tr:last-child td { border-bottom:none; }

.mono { font-family:'JetBrains Mono', monospace; font-size:13px; }
.text-right { text-align:right; }
.text-center { text-align:center; }
.fw-600 { font-weight:600; }
.fw-700 { font-weight:700; }
.text-muted { color:var(--text-muted); }
.text-dim { color:var(--text-dim); }
.text-green { color:var(--green); }
.text-red { color:var(--red); }
.text-amber { color:var(--amber); }
.text-accent { color:var(--accent); }

/* ── Badges ────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}
.badge-blue   { color:var(--accent); background:var(--accent-soft); }
.badge-green  { color:var(--green);  background:var(--green-soft); }
.badge-red    { color:var(--red);    background:var(--red-soft); }
.badge-amber  { color:var(--amber);  background:var(--amber-soft); }
.badge-purple { color:var(--purple); background:var(--purple-soft); }

/* ── Buttons ───────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 18px;
    transition: all 0.2s;
    text-decoration: none;
}
.btn svg { width:16px; height:16px; }

.btn-primary   { background:var(--accent); color:#fff; }
.btn-primary:hover { background:var(--accent-hover); }
.btn-success   { background:var(--green-soft); color:var(--green); }
.btn-success:hover { background:var(--green); color:#fff; }
.btn-danger    { background:var(--red-soft); color:var(--red); }
.btn-danger:hover { background:var(--red); color:#fff; }
.btn-ghost     { background:transparent; color:var(--text-muted); border:1px solid var(--border); }
.btn-ghost:hover { background:var(--surface-hover); color:var(--text); }

.btn-sm { font-size:12px; padding:6px 12px; }
.btn-sm svg { width:14px; height:14px; }

.btn-group { display:flex; gap:6px; }

/* ── Forms ─────────────────────────────────── */
.form-group { margin-bottom:16px; }
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    font-family: inherit;
    font-size: 14px;
    transition: border-color 0.2s;
}
.form-control:focus { outline:none; border-color:var(--accent); }

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238B8FA3' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    cursor: pointer;
}

textarea.form-control { resize:vertical; min-height:70px; }

.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-row-3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:16px; }
.form-full { grid-column:1/-1; }

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ── Search bar ────────────────────────────── */
.search-bar {
    position: relative;
    margin-bottom: 20px;
}
.search-bar .form-control { padding-left:40px; }
.search-bar svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    stroke: var(--text-dim);
    fill: none;
    stroke-width: 2;
}

/* ── Flash / Alert ─────────────────────────── */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: fadeIn 0.3s ease;
}
.alert-success { background:var(--green-soft); color:var(--green); border:1px solid rgba(16,185,129,0.2); }
.alert-error   { background:var(--red-soft);   color:var(--red);   border:1px solid rgba(239,68,68,0.2); }
.alert-info    { background:var(--accent-soft); color:var(--accent); border:1px solid rgba(59,130,246,0.2); }

/* ── Empty state ───────────────────────────── */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-dim);
}
.empty-state .icon { font-size:48px; margin-bottom:12px; }
.empty-state h3 { font-size:15px; font-weight:600; color:var(--text-muted); margin-bottom:4px; }
.empty-state p { font-size:13px; }

/* ── Avatar / Initial ──────────────────────── */
.avatar {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.customer-cell { display:flex; align-items:center; gap:10px; }
.customer-cell .name { font-weight:600; }
.customer-cell .sub { font-size:12px; color:var(--text-muted); }

/* ── Invoice detail ────────────────────────── */
.invoice-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.invoice-title { font-size:24px; font-weight:800; color:var(--accent); letter-spacing:-0.5px; }

.invoice-meta { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-bottom:24px; }
.invoice-meta .block { padding:14px; border-radius:var(--radius); background:var(--surface); }
.invoice-meta .block-label { font-size:11px; font-weight:700; color:var(--text-dim); text-transform:uppercase; letter-spacing:1px; margin-bottom:6px; }

.invoice-totals {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}
.invoice-totals table { width:280px; }
.invoice-totals td { padding:6px 0; font-size:14px; }
.invoice-totals .total-row td { border-top:2px solid var(--accent); padding-top:12px; font-size:18px; font-weight:800; }

.amount-words {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--radius);
    background: var(--accent-soft);
    font-size: 13px;
    color: var(--accent);
    font-weight: 500;
}

/* ── Login page ────────────────────────────── */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}

.login-box {
    width: 400px;
    padding: 40px;
    background: var(--surface);
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.login-box h1 { text-align:center; font-size:24px; margin-bottom:8px; }
.login-box p { text-align:center; color:var(--text-muted); margin-bottom:28px; font-size:14px; }

/* ── Animations ────────────────────────────── */
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }
@keyframes slideIn { from{opacity:0;transform:translateX(-12px)} to{opacity:1;transform:translateX(0)} }

.fade-in { animation: fadeIn 0.3s ease; }

/* ── Print styles ──────────────────────────── */
@media print {
    .sidebar, .page-header .btn, .btn-group { display:none !important; }
    .main-content { margin-left:0; padding:0; }
    .card { border:1px solid #ddd; box-shadow:none; }
    body { background:#fff; color:#000; }
    .badge { border:1px solid currentColor; }
}