@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  /* Modern Light Theme Palette */
  --bg: #F3F4F6; /* Light gray background */
  --surface: #FFFFFF; /* Pure white cards */
  --surface2: #F9FAFB; /* Subtle background for hover/secondary elements */
  --border: #E5E7EB;
  --border2: #D1D5DB;

  /* Typography */
  --text: #111827; /* Near black */
  --text2: #4B5563; /* Slate gray */
  --text3: #9CA3AF; /* Light text */

  /* Vibrant Accents */
  --accent: #2563EB; /* Vibrant Blue */
  --accent-hover: #1D4ED8;
  --accent-light: #EFF6FF;

  /* Status Colors */
  --green: #10B981; 
  --green-bg: #ECFDF5;
  --red: #EF4444; 
  --red-bg: #FEF2F2;
  --amber: #F59E0B; 
  --amber-bg: #FFFBEB;
  --blue: #3B82F6; 
  --blue-bg: #EFF6FF;

  /* UI Tokens */
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
  --font: 'Inter', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { font-size: 14px; scroll-behavior: smooth; }
body { 
  font-family: var(--font); 
  background: var(--bg); 
  color: var(--text); 
  line-height: 1.6; 
  -webkit-font-smoothing: antialiased;
}

/* ---- Layout ---- */
.layout { 
  display: flex; 
  flex-direction: column; 
  min-height: 100vh; 
  max-width: 1300px;
  margin: 0 auto;
  padding: 24px;
}

/* ---- Topbar Header ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0 30px 0;
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}
.topbar-logo i { 
  font-size: 32px; 
  color: var(--accent);
  background: var(--accent-light);
  padding: 8px;
  border-radius: var(--radius);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.month-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.month-selector:hover {
  border-color: var(--border2);
  box-shadow: var(--shadow);
}

/* ---- Horizontal Navigation ---- */
.main-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 12px;
  margin-bottom: 35px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 5px 5px 15px 5px; /* space to avoid cutting off box shadow */
  scrollbar-width: none;
}
.main-nav::-webkit-scrollbar { display: none; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 100px; /* Pill shape */
  text-decoration: none;
  color: var(--text2);
  font-size: 15px;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid transparent;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-item i { font-size: 20px; transition: transform 0.2s ease; }
.nav-item:hover { 
  background: var(--surface2); 
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.nav-item:hover i { transform: scale(1.1); }
.nav-item.active { 
  background: var(--accent); 
  color: white; 
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

/* ---- Main Content ---- */
.main { flex: 1; }
.content { padding-bottom: 50px; }

/* ---- Metric Cards ---- */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 35px;
}
.metric-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border2);
}
.metric-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--accent), #60A5FA);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.metric-card:hover::before { opacity: 1; }
.metric-card .m-label { font-size: 13px; font-weight: 600; color: var(--text2); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.05em; }
.metric-card .m-value { font-size: 32px; font-weight: 800; color: var(--text); margin-bottom: 12px; letter-spacing: -0.02em; }
.metric-card .m-sub { font-size: 14px; display: flex; align-items: center; gap: 6px; font-weight: 600;}
.m-sub.up   { color: var(--green); }
.m-sub.down { color: var(--red); }
.m-sub.neutral { color: var(--text3); }

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 15px;
}
.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* ---- Two column grid ---- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-bottom: 28px;}
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; margin-bottom: 28px;}

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; width: 100%; border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 600px; }
thead th {
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text3);
  padding: 16px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  letter-spacing: 0.05em;
}
tbody tr { transition: background 0.2s ease; }
tbody tr:hover { background: var(--surface2); }
tbody td {
  padding: 18px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-weight: 500;
}
tbody tr:last-child td { border-bottom: none; }
.amount-pos { color: var(--green); font-weight: 600; }
.amount-neg { color: var(--red); font-weight: 600; }

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 100px;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge-green  { background: var(--green-bg); color: var(--green); }
.badge-red    { background: var(--red-bg);   color: var(--red); }
.badge-amber  { background: var(--amber-bg); color: var(--amber); }
.badge-blue   { background: var(--blue-bg);  color: var(--blue); }
.badge-gray   { background: #F3F4F6; color: var(--text2); }

/* ---- Forms ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.form-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-group { display: flex; flex-direction: column; gap: 10px; }
.form-group label { font-size: 14px; font-weight: 600; color: var(--text2); }
.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font);
  font-size: 15px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  outline: none;
  width: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow-sm) inset;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { 
  border-color: var(--accent); 
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  text-decoration: none;
  background: var(--surface);
  color: var(--text);
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.btn:hover { 
  background: var(--surface2); 
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn:active { transform: translateY(0); }

.btn-primary { 
  background: var(--accent); 
  color: white; 
  border-color: transparent; 
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}
.btn-primary:hover { 
  background: var(--accent-hover); 
  box-shadow: 0 6px 15px rgba(37, 99, 235, 0.3);
}

.btn-danger { 
  background: var(--red); 
  color: white; 
  border-color: transparent; 
  box-shadow: 0 4px 10px rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background: #DC2626;
  box-shadow: 0 6px 15px rgba(239, 68, 68, 0.3);
}

.btn-success { 
  background: var(--green); 
  color: white; 
  border-color: transparent; 
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}
.btn-success:hover {
  background: #059669;
  box-shadow: 0 6px 15px rgba(16, 185, 129, 0.3);
}

.btn-sm { padding: 8px 16px; font-size: 14px; border-radius: 8px; }

/* ---- Chart wrapper ---- */
.chart-wrap { position: relative; width: 100%; height: 320px; }
.chart-wrap-sm { height: 240px; }
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--text2);
  font-weight: 600;
}
.chart-legend span { display: flex; align-items: center; gap: 8px; }
.legend-sq { width: 14px; height: 14px; border-radius: 4px; flex-shrink: 0; box-shadow: var(--shadow-sm); }

/* ---- P&L rows ---- */
.pl-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 15px;
}
.pl-row:last-child { border-bottom: none; }
.pl-row.section-label {
  background: var(--surface2);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text2);
  margin: 24px 0 12px;
  border: none;
}
.pl-row.total-row {
  font-weight: 700;
  font-size: 16px;
  border-top: 2px solid var(--border2);
  border-bottom: none;
  padding-top: 20px;
  margin-top: 12px;
}
.pl-row.net-row {
  font-size: 20px;
  font-weight: 800;
  padding: 24px 0;
  border-top: 2px solid var(--text);
  border-bottom: none;
}

/* ---- Progress bar ---- */
.progress-bar { background: var(--bg); border-radius: 100px; height: 8px; overflow: hidden; margin-top: 8px; box-shadow: inset 0 1px 2px rgba(0,0,0,0.05); }
.progress-fill { height: 100%; border-radius: 100px; transition: width 0.5s ease; }

/* ---- Tax boxes ---- */
.tax-box {
  background: var(--surface2);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.tax-box:hover { border-color: var(--border2); background: var(--surface); box-shadow: var(--shadow-sm); }
.tax-box .t-label { font-size: 13px; color: var(--text2); margin-bottom: 8px; text-transform: uppercase; font-weight: 700; letter-spacing: 0.05em; }
.tax-box .t-value { font-size: 28px; font-weight: 800; color: var(--text); }
.tax-box.highlight { background: var(--accent-light); border-color: #BFDBFE; }
.tax-box.highlight .t-value { color: var(--accent); }

/* ---- Alert ---- */
.alert {
  padding: 16px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  animation: slideDown 0.3s ease-out;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
.alert-success { background: var(--green-bg); color: #065F46; border: 1px solid #A7F3D0; }
.alert-error   { background: var(--red-bg);   color: #991B1B; border: 1px solid #FECACA; }
.alert-info    { background: var(--blue-bg);  color: #1E3A8A; border: 1px solid #BFDBFE; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .two-col, .three-col { grid-template-columns: 1fr; }
  .form-grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .layout { padding: 16px; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 20px; }
  .topbar-right { width: 100%; display: flex; justify-content: flex-start; flex-wrap: wrap; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr; }
  .card { padding: 20px; }
  .metric-card { padding: 20px; }
  .nav-item { padding: 10px 16px; font-size: 14px; }
}