/* =============================================
   FINANZAS APP - Dark Premium Theme
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---- Design Tokens ---- */
:root {
  --bg-base:     #0a0f1e;
  --bg-surface:  #0f1729;
  --bg-card:     #141f35;
  --bg-input:    #0d1527;
  --bg-hover:    #1a2640;

  --green:       #10b981;
  --green-dim:   #059669;
  --green-glow:  rgba(16,185,129,0.12);
  --blue:        #3b82f6;
  --blue-dim:    #2563eb;
  --red:         #ef4444;
  --yellow:      #f59e0b;
  --purple:      #8b5cf6;

  --text:        #e8f0fe;
  --text-muted:  #94a3b8;
  --text-dim:    #4b5a6e;

  --border:      rgba(255,255,255,0.07);
  --border-focus:rgba(16,185,129,0.4);

  --sidebar-w:   250px;
  --navbar-h:    60px;
  --radius:      10px;
  --radius-sm:   6px;
  --shadow:      0 4px 24px rgba(0,0,0,0.5);
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.3);
  --transition:  0.2s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--green); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--green-dim); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
img { max-width: 100%; }

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

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0; left: 0;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  overflow-y: auto;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.sidebar-close {
  display: none !important;
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}
.sidebar-brand {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.sidebar-brand .brand-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--green), var(--blue));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.sidebar-brand .brand-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}
.sidebar-brand .brand-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
}
.sidebar-section {
  padding: 1.25rem 1rem 0.5rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.sidebar-nav { list-style: none; padding: 0 0.75rem; }
.sidebar-nav li { margin-bottom: 2px; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.875rem;
  transition: var(--transition);
}
.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: var(--green-glow);
  color: var(--green);
}
.sidebar-nav a .nav-icon { font-size: 1rem; width: 18px; text-align: center; }
.sidebar-footer {
  margin-top: auto;
  padding: 1rem;
  border-top: 1px solid var(--border);
}
.sidebar-footer .user-info {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8rem;
}
.sidebar-footer .user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--blue));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem; color: #fff;
  flex-shrink: 0;
}

/* ---- Main Content ---- */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  overflow-x: hidden;
}

/* ---- Topbar ---- */
.topbar {
  height: var(--navbar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky; top: 0; z-index: 50;
}
.topbar-title { font-weight: 600; font-size: 1rem; }
.sidebar-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: -0.5rem;
}
.sidebar-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s ease;
}
.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}
.topbar-actions { display: flex; align-items: center; gap: 1rem; }
.topbar-actions .btn-logout {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.8rem;
}
.topbar-actions .btn-logout:hover { border-color: var(--red); color: var(--red); }

/* ---- Page Content ---- */
.page-content { padding: 1.5rem; flex: 1; }
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.page-header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}
.page-header p { color: var(--text-muted); font-size: 0.85rem; margin-top: 2px; }

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.card-title { font-weight: 600; font-size: 0.95rem; }

/* ---- Stat Cards ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--border-focus); transform: translateY(-2px); }
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--blue));
}
.stat-card.red::before { background: linear-gradient(90deg, var(--red), var(--purple)); }
.stat-card.blue::before { background: linear-gradient(90deg, var(--blue), var(--purple)); }
.stat-card.yellow::before { background: linear-gradient(90deg, var(--yellow), var(--red)); }
.stat-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  margin: 0.25rem 0;
  line-height: 1.2;
}
.stat-value.green { color: var(--green); }
.stat-value.red { color: var(--red); }
.stat-sub { font-size: 0.75rem; color: var(--text-dim); }

/* ---- Grid layouts ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.25rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 1rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dim); color: #fff; }
.btn-secondary { background: var(--bg-hover); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--green); color: var(--green); }
.btn-danger { background: transparent; color: var(--red); border: 1px solid rgba(239,68,68,0.3); }
.btn-danger:hover { background: rgba(239,68,68,0.1); }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.78rem; }
.btn-icon { padding: 0.4rem 0.6rem; font-size: 0.85rem; }

/* ---- Forms ---- */
.form-group { margin-bottom: 1rem; }
.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.form-control {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-glow); }
.form-control::placeholder { color: var(--text-dim); }
select.form-control option { background: var(--bg-card); }
textarea.form-control { resize: vertical; min-height: 90px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
.form-hint { font-size: 0.75rem; color: var(--text-dim); margin-top: 0.25rem; }
.form-check { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.form-check input[type="checkbox"] { accent-color: var(--green); width: 16px; height: 16px; }

/* ---- Tables ---- */
.table-wrapper { overflow-x: auto; border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead th {
  background: var(--bg-surface);
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg-hover); color: var(--text); }
.td-bold { font-weight: 600; color: var(--text) !important; }

/* ---- Badges ---- */
.badge {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge-green  { background: rgba(16,185,129,0.15); color: var(--green); }
.badge-red    { background: rgba(239,68,68,0.15);  color: var(--red); }
.badge-yellow { background: rgba(245,158,11,0.15); color: var(--yellow); }
.badge-blue   { background: rgba(59,130,246,0.15); color: var(--blue); }
.badge-purple { background: rgba(139,92,246,0.15); color: var(--purple); }
.badge-gray   { background: rgba(255,255,255,0.07); color: var(--text-muted); }

/* ---- Alerts / Flash ---- */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}
.alert-success { background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3); color: var(--green); }
.alert-danger  { background: rgba(239,68,68,0.12);  border: 1px solid rgba(239,68,68,0.3);  color: var(--red); }
.alert-warning { background: rgba(245,158,11,0.12); border: 1px solid rgba(245,158,11,0.3); color: var(--yellow); }
.alert-info    { background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.3); color: var(--blue); }

/* ---- Amount colors ---- */
.amount-income   { color: var(--green); font-weight: 700; }
.amount-expense  { color: var(--red);   font-weight: 700; }
.amount-transfer { color: var(--blue);  font-weight: 700; }

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-dim);
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h3 { color: var(--text-muted); font-size: 1rem; margin-bottom: 0.5rem; }

/* ---- Distribution rows ---- */
.distribution-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.75rem;
  align-items: end;
  margin-bottom: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
#dist-total-indicator {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.5rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}
#dist-total-indicator.ok   { color: var(--green); }
#dist-total-indicator.over { color: var(--red); }

/* ---- Progress bar ---- */
.progress { height: 6px; background: var(--bg-hover); border-radius: 3px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--green), var(--blue)); transition: width 0.4s ease; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .sidebar { 
    transform: translateX(-100%); 
    box-shadow: 10px 0 30px rgba(0,0,0,0.5);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-close { display: block !important; }
  .sidebar-toggle { display: block; }
  .main-content { margin-left: 0; width: 100%; max-width: 100vw; }
  .form-row, .form-row-3, .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  
  .page-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .page-header .btn { width: 100%; justify-content: center; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .topbar { padding: 0 1rem; }
  .page-content { padding: 1rem; }
  .card { padding: 1rem; }
}

/* ---- Auth pages ---- */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  padding: 1.5rem;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-logo .logo-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--green), var(--blue));
  border-radius: var(--radius);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1rem;
}
.auth-logo h1 { font-size: 1.4rem; font-weight: 800; }
.auth-logo p  { color: var(--text-muted); font-size: 0.85rem; }

/* ---- Utilities ---- */
.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:1rem}.mt-4{margin-top:1.5rem}
.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:1rem}.mb-4{margin-bottom:1.5rem}
.flex { display: flex; } .items-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-1{gap:.25rem}.gap-2{gap:.5rem}.gap-3{gap:.75rem}
.text-sm { font-size: 0.8rem; } .text-muted { color: var(--text-muted); } .text-green { color: var(--green); }
.text-red { color: var(--red); } .font-bold { font-weight: 700; } .font-600 { font-weight: 600; }
.w-full { width: 100%; } .text-center { text-align: center; }