/**
 * IL Profit Engine - Style CSS
 * Nowoczesny, czytelny interfejs
 */

/* ===== Zmienne CSS ===== */
:root {
  /* Kolory */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-secondary: #64748b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #06b6d4;

  /* Tła */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-dark: #1e293b;

  /* Tekst */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;

  /* Obramowania */
  --border-color: #e2e8f0;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;

  /* Cienie */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Rozmiary */
  --navbar-height: 64px;
  --sidebar-width: 250px;
  --container-max: 1200px;

  /* Fonty */
  --font-family:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Navbar ===== */
.navbar {
  display: flex;
  align-items: center;
  height: var(--navbar-height);
  padding: 0 var(--spacing-xl);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.navbar-brand a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.navbar-logo {
  height: 32px;
  width: auto;
}

.navbar-menu {
  display: flex;
  gap: var(--spacing-md);
  margin-left: var(--spacing-2xl);
}

.navbar-item {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  transition: all 0.2s ease;
}

.navbar-item:hover {
  color: var(--color-primary);
  background: var(--bg-tertiary);
}

.navbar-item-admin {
  color: var(--color-primary);
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-left: auto;
}

.user-name {
  font-weight: 500;
}

.user-role {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  padding: var(--spacing-xl);
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
}

/* ===== Footer ===== */
.footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--text-inverse);
}

.btn-success {
  background: var(--color-success);
  color: var(--text-inverse);
}

.btn-error {
  background: var(--color-error);
  color: var(--text-inverse);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

/* ===== Forms ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-group input.is-invalid {
  border-color: var(--color-error);
}

.form-group .error-message {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

/* ===== Cards ===== */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.card-header h2,
.card-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* Collapsible cards */
.card.collapsible .card-header {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.card.collapsible .card-header::after {
  content: "▼";
  font-size: 0.8em;
  transition: transform 0.3s ease;
  color: var(--text-secondary);
}

.card.collapsible.collapsed .card-header::after {
  transform: rotate(-90deg);
}

.card.collapsible.collapsed .card-body {
  display: none;
}

/* ===== Tables ===== */
.table-container {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th,
.table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.table tbody tr:hover {
  background: var(--bg-tertiary);
}

.table .text-right {
  text-align: right;
}

.table .text-center {
  text-align: center;
}

.table .text-nowrap {
  white-space: nowrap;
}

.table .amount {
  font-family: "JetBrains Mono", monospace;
  text-align: right;
}

.table .amount-positive {
  color: var(--color-success);
}

.table .amount-negative {
  color: var(--color-error);
}

.table tfoot {
  font-weight: 600;
  background: var(--bg-tertiary);
}

/* ===== Alerts ===== */
.alert {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
}

.alert-success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

.alert-info {
  background: #ecfeff;
  color: #0e7490;
  border: 1px solid #a5f3fc;
}

.alert-close {
  margin-left: auto;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.alert-close:hover {
  opacity: 1;
}

/* ===== Login Page ===== */
.page-login {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e40af 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: var(--spacing-xl);
}

.login-box {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-2xl);
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-header h1 {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.login-header p {
  color: var(--text-secondary);
}

.login-form {
  margin-bottom: var(--spacing-lg);
}

.login-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ===== Dashboard ===== */
.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
}

.dashboard-header h1 {
  font-size: var(--font-size-2xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

.stat-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.stat-card-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stat-card-value.positive {
  color: var(--color-success);
}

.stat-card-value.negative {
  color: var(--color-error);
}

/* ===== Page Header ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
}

.page-header h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
}

.page-header-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* ===== Month Selector ===== */
.month-selector {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.month-selector label {
  font-weight: 500;
}

.month-selector select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  min-width: 200px;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-secondary);
}

.empty-state h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

/* ===== Utilities ===== */
.text-primary {
  color: var(--text-primary);
}
.text-secondary {
  color: var(--text-secondary);
}
.text-muted {
  color: var(--text-muted);
}
.text-success {
  color: var(--color-success);
}
.text-error {
  color: var(--color-error);
}
.text-warning {
  color: var(--color-warning);
}

.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.text-left {
  text-align: left;
}

.font-bold {
  font-weight: 700;
}
.font-semibold {
  font-weight: 600;
}
.font-medium {
  font-weight: 500;
}

.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: var(--spacing-sm);
}
.mt-2 {
  margin-top: var(--spacing-md);
}
.mt-3 {
  margin-top: var(--spacing-lg);
}
.mt-4 {
  margin-top: var(--spacing-xl);
}

.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: var(--spacing-sm);
}
.mb-2 {
  margin-bottom: var(--spacing-md);
}
.mb-3 {
  margin-bottom: var(--spacing-lg);
}
.mb-4 {
  margin-bottom: var(--spacing-xl);
}

.hidden {
  display: none !important;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar {
    padding: 0 var(--spacing-md);
  }

  .navbar-menu {
    display: none;
  }

  .main-content {
    padding: var(--spacing-md);
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== Dark Mode ===== */
[data-theme="dark"] {
  --bg-primary: #1e293b;
  --bg-secondary: #0f172a;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .card {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] .table th {
  background: var(--bg-tertiary);
}

[data-theme="dark"] .table tbody tr:hover {
  background: var(--bg-tertiary);
}

[data-theme="dark"] .alert-success {
  background: #064e3b;
  color: #a7f3d0;
  border-color: #065f46;
}

[data-theme="dark"] .alert-error {
  background: #7f1d1d;
  color: #fecaca;
  border-color: #991b1b;
}

[data-theme="dark"] .alert-warning {
  background: #78350f;
  color: #fde68a;
  border-color: #92400e;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .login-box {
  background: var(--bg-primary);
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
}