/* Barnes Investments Tracker - Styles */

/* ============================================================================
   CSS Variables
   ============================================================================ */
:root {
  --color-bg: #0f1419;
  --color-bg-secondary: #1a1f26;
  --color-bg-tertiary: #252b33;
  --color-border: #2d3640;
  --color-text: #e7e9ea;
  --color-text-secondary: #8b98a5;
  --color-primary: #1d9bf0;
  --color-primary-hover: #1a8cd8;
  --color-success: #00ba7c;
  --color-warning: #ffad1f;
  --color-danger: #f4212e;
  --color-info: #1d9bf0;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, Consolas, monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --transition: 150ms ease;
}

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

html {
  font-size: 14px;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

button {
  font-family: inherit;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

.hidden {
  display: none !important;
}

/* ============================================================================
   Loading Screen
   ============================================================================ */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  gap: 1rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================================================
   Login Screen
   ============================================================================ */
.login-container {
  max-width: 400px;
  margin: 0 auto;
  padding: 3rem 2rem;
  text-align: center;
}

.login-container h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.login-container p {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#login-form input {
  padding: 0.75rem 1rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

#login-form input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.message {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

.message.success {
  background: rgba(0, 186, 124, 0.1);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

.message.error {
  background: rgba(244, 33, 46, 0.1);
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
}

/* ============================================================================
   Buttons
   ============================================================================ */
.btn-primary, .btn-secondary {
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition);
  border: none;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-tertiary);
}

.btn-back {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1rem;
  padding: 0.5rem;
}

.btn-back:hover {
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}

/* ============================================================================
   Header
   ============================================================================ */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left h1 {
  font-size: 1.25rem;
  font-weight: 700;
}

.header-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#user-email {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* ============================================================================
   Main Content
   ============================================================================ */
.app-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

.page {
  animation: fadeIn 200ms ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  gap: 1rem;
}

.page-header h2 {
  font-size: 1.5rem;
}

/* ============================================================================
   Dashboard
   ============================================================================ */
.dashboard-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.summary-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.summary-card h3 {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.big-number {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.change-indicator {
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.change-indicator.positive {
  color: var(--color-success);
}

.change-indicator.negative {
  color: var(--color-danger);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.dashboard-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.dashboard-section h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.empty-state {
  color: var(--color-text-secondary);
  font-style: italic;
  padding: 1rem 0;
}

.empty-state.success {
  color: var(--color-success);
}

/* ============================================================================
   Holdings
   ============================================================================ */
.holdings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.holding-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  cursor: pointer;
  transition: all var(--transition);
}

.holding-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.holding-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.holding-symbol {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.holding-name {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.holding-type {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.holding-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
}

/* ============================================================================
   Alerts
   ============================================================================ */
.alerts-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.alert-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.alert-card.severity-critical {
  border-left: 3px solid var(--color-danger);
}

.alert-card.severity-warning {
  border-left: 3px solid var(--color-warning);
}

.alert-card.severity-info {
  border-left: 3px solid var(--color-info);
}

.alert-icon {
  font-size: 1.25rem;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.alert-message {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.alert-meta {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

.alert-actions {
  display: flex;
  gap: 0.5rem;
}

.alert-actions button {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
}

/* ============================================================================
   Documents
   ============================================================================ */
.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.document-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.document-icon {
  font-size: 2rem;
}

.document-info {
  flex: 1;
  min-width: 0;
}

.document-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.document-meta {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* ============================================================================
   Settings
   ============================================================================ */
.settings-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.settings-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.settings-section h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.export-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ============================================================================
   Modal
   ============================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 2rem;
}

.modal-container {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  font-size: 1.125rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  line-height: 1;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-content {
  padding: 1.5rem;
  overflow-y: auto;
}

/* ============================================================================
   Toast Notifications
   ============================================================================ */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1100;
}

.toast {
  padding: 0.875rem 1.25rem;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: slideIn 200ms ease;
  max-width: 350px;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

.toast.success {
  border-color: var(--color-success);
}

.toast.error {
  border-color: var(--color-danger);
}

.toast.warning {
  border-color: var(--color-warning);
}

/* ============================================================================
   Utility Classes
   ============================================================================ */
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-muted { color: var(--color-text-secondary); }
.font-mono { font-family: var(--font-mono); }

.filter-group {
  display: flex;
  gap: 0.75rem;
}

.filter-group select {
  padding: 0.5rem 1rem;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

/* ============================================================================
   Responsive
   ============================================================================ */
@media (max-width: 768px) {
  .app-header {
    flex-wrap: wrap;
    padding: 1rem;
    gap: 1rem;
  }

  .header-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
  }

  .app-main {
    padding: 1rem;
  }

  .dashboard-summary {
    grid-template-columns: 1fr 1fr;
  }

  .page-header {
    flex-wrap: wrap;
  }
}