/* ===== FONT FACES ===== */
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-Bold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-ExtraBold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ===== THEME SYSTEM ===== */
:root {
  /* Light Theme Colors */
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f9fafb;
  --bg-hover: #f3f4f6;
  --text-primary: #2c3e50;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-primary: #e5e7eb;
  --border-secondary: #d1d5db;
  --accent-primary: #7c9cbf;
  --accent-hover: #6b8db5;
  --success: #10b981;
  --success-hover: #059669;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  --info: #3b82f6;
  
  /* Light Theme Message Colors */
  --msg-success-bg: #d1fae5;
  --msg-success-border: #a7f3d0;
  --msg-success-text: #065f46;
  --msg-error-bg: #fee2e2;
  --msg-error-border: #fca5a5;
  --msg-error-text: #991b1b;
  --msg-info-bg: #dbeafe;
  --msg-info-border: #93c5fd;
  --msg-info-text: #1e40af;
}

[data-theme="dark"] {
  /* Dark Theme Colors */
  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --bg-tertiary: #374151;
  --bg-hover: #4b5563;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --border-primary: #374151;
  --border-secondary: #4b5563;
  --accent-primary: #93c5fd;
  --accent-hover: #60a5fa;
  --success: #34d399;
  --success-hover: #10b981;
  --danger: #f87171;
  --danger-hover: #ef4444;
  --warning: #fbbf24;
  --info: #60a5fa;
  
  /* Dark Theme Message Colors */
  --msg-success-bg: #064e3b;
  --msg-success-border: #065f46;
  --msg-success-text: #d1fae5;
  --msg-error-bg: #7f1d1d;
  --msg-error-border: #991b1b;
  --msg-error-text: #fee2e2;
  --msg-info-bg: #1e3a8a;
  --msg-info-border: #1e40af;
  --msg-info-text: #dbeafe;
}

/* ===== BASE STYLES ===== */
body {
  font-family: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  line-height: 1.6;
}

* {
  transition: all 0.2s ease-in-out;
}

/* ===== THEME COMPONENT CLASSES ===== */
.theme-body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.theme-nav {
  background-color: var(--bg-secondary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid var(--border-primary);
}

.theme-nav-brand {
  color: var(--text-primary);
}

.theme-nav-text {
  color: var(--text-secondary);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle-btn {
  padding: 0.5rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-secondary);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
}

.theme-toggle-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-primary);
}

.theme-icon {
  font-size: 1.125rem;
  transition: opacity 0.2s ease-in-out;
}

/* ===== FORM COMPONENTS ===== */
.form-input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-secondary);
  border-radius: 0.375rem;
  font-family: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  font-size: 0.875rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(124, 156, 191, 0.1);
}

[data-theme="dark"] .form-input:focus {
  box-shadow: 0 0 0 3px rgba(147, 197, 253, 0.2);
}

.form-textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-secondary);
  border-radius: 0.375rem;
  font-family: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  font-size: 0.875rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  resize: vertical;
  min-height: 80px;
}

.form-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(124, 156, 191, 0.1);
}

[data-theme="dark"] .form-textarea:focus {
  box-shadow: 0 0 0 3px rgba(147, 197, 253, 0.2);
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.form-error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.form-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
}

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

.form-actions-mobile {
  display: flex;
  gap: 0.75rem;
}

@media (max-width: 640px) {
  .form-actions-mobile {
    flex-direction: column;
    gap: 0.75rem;
  }
  .form-actions-mobile .btn {
    width: 100%;
  }
}

.auth-container {
  max-width: 28rem;
  margin: 0 auto;
  margin-top: 4rem;
}

.auth-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.auth-link {
  color: var(--accent-primary);
  text-decoration: none;
}

.auth-link:hover {
  text-decoration: underline;
}

.auth-footer {
  text-align: center;
  margin-top: 1rem;
}

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

/* ===== BUTTON COMPONENTS ===== */
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  border: none;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--bg-secondary);
}

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

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

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

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

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

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

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

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
}

/* ===== NAVIGATION COMPONENTS ===== */
.nav-link {
  color: var(--text-primary);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--accent-primary);
}

.nav-button {
  background-color: var(--accent-primary);
  color: var(--bg-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  text-decoration: none;
}

.nav-button:hover {
  background-color: var(--accent-hover);
}

/* ===== CARD COMPONENTS ===== */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.card-hover {
  cursor: pointer;
}

.card-hover:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border-primary);
}

.card-header h2 {
  font-size: 1.125rem;
  line-height: 1.4;
  margin: 0;
}

.card-header p {
  font-size: 0.875rem;
  line-height: 1.3;
  margin: 0.25rem 0 0 0;
}

.card-body {
  padding: 0.75rem 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  width: 100%;
}

@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }
}

@media (min-width: 769px) {
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)) !important;
  }
}

@media (min-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)) !important;
    gap: 2rem;
  }
}

/* ===== LAYOUT COMPONENTS ===== */
.container-main {
  max-width: 80rem;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

@media (min-width: 640px) {
  .container-main {
    padding: 1.5rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container-main {
    padding: 1.5rem 2rem;
  }
}

.container-content {
  max-width: 80rem;
  margin: 0 auto;
}

/* ===== PAGE HEADER ===== */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.page-subtitle {
  color: var(--text-secondary);
  margin-top: 0.25rem;
  font-size: 0.875rem;
}

/* ===== TASK COMPONENTS ===== */
.task-list-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  cursor: pointer;
}

.task-list-card:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.task-toggle-btn {
  margin-top: 0.25rem;
  height: 1.25rem;
  width: 1.25rem;
  border-radius: 0.125rem;
  border: 2px solid var(--border-secondary);
  background: var(--bg-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.task-toggle-btn:hover {
  border-color: var(--accent-primary);
}

.task-toggle-checked {
  margin-top: 0.25rem;
  height: 1.25rem;
  width: 1.25rem;
  border-radius: 0.125rem;
  border: 2px solid var(--success);
  background-color: var(--success);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.task-toggle-checked:hover {
  border-color: var(--success-hover);
  background-color: var(--success-hover);
}

.task-content {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  flex: 1;
}

.task-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1rem;
}

.task-title {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.task-title-completed {
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: line-through;
  margin-bottom: 0.25rem;
}

.task-description {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.task-description-completed {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  text-decoration: line-through;
}

.task-timestamp {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== SECTION COMPONENTS ===== */
.section-divider > * + * {
  border-top: 1px solid var(--border-primary);
}

.section-item {
  padding: 1.5rem;
}

.section-item:hover {
  background-color: var(--bg-hover);
}

.section-item-completed {
  padding: 1.5rem;
  opacity: 0.75;
}

.section-item-completed:hover {
  background-color: var(--bg-hover);
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 3rem;
}

.empty-state-icon {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.empty-state-description {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ===== MESSAGE COMPONENTS ===== */
.message-success {
  background-color: var(--msg-success-bg);
  border: 1px solid var(--msg-success-border);
  color: var(--msg-success-text);
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  margin-bottom: 0.75rem;
}

.message-error {
  background-color: var(--msg-error-bg);
  border: 1px solid var(--msg-error-border);
  color: var(--msg-error-text);
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  margin-bottom: 0.75rem;
}

.message-info {
  background-color: var(--msg-info-bg);
  border: 1px solid var(--msg-info-border);
  color: var(--msg-info-text);
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  margin-bottom: 0.75rem;
}


/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-hover);
}

/* ===== FOCUS STATES ===== */
input:focus,
textarea:focus,
button:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-primary);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes taskComplete {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.task-complete {
  animation: taskComplete 0.3s ease-out;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--bg-tertiary);
  border-top: 2px solid var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ===== UTILITY CLASSES ===== */
.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}

.custom-checkbox {
  appearance: none;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--border-secondary);
  border-radius: 0.25rem;
  background: var(--bg-secondary);
  cursor: pointer;
  position: relative;
}

.custom-checkbox:checked {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.custom-checkbox:checked::after {
  content: "✓";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 0.875rem;
}

.task-item {
  border-left: 4px solid transparent;
  padding-left: 1rem;
}

.task-item:hover {
  border-left-color: var(--accent-primary);
  background-color: var(--bg-hover);
}

.task-item.completed {
  border-left-color: var(--success);
  opacity: 0.7;
}

.priority-high {
  border-left-color: var(--danger);
}

.priority-medium {
  border-left-color: var(--warning);
}

.priority-low {
  border-left-color: var(--success);
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  .mobile-stack {
    flex-direction: column;
    gap: 0.5rem;
  }

  .mobile-full {
    width: 100%;
  }

  .page-header {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
  position: fixed;
  top: 1rem;
  right: 1rem;
  min-width: 300px;
  max-width: 400px;
  padding: 1rem;
  border-radius: 0.5rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease-in-out;
  border-left: 4px solid;
  color: var(--text-primary);
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast.success {
  background-color: var(--msg-success-bg);
  border-color: var(--success);
  color: var(--msg-success-text);
}

.toast.error {
  background-color: var(--msg-error-bg);
  border-color: var(--danger);
  color: var(--msg-error-text);
}

.toast.warning {
  background-color: #fef3cd;
  border-color: var(--warning);
  color: #664d03;
}

.toast.info {
  background-color: var(--msg-info-bg);
  border-color: var(--info);
  color: var(--msg-info-text);
}

.toast button {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.toast button:hover {
  opacity: 1;
}

/* Mobile responsiveness for toast */
@media (max-width: 768px) {
  .toast {
    right: 0.5rem;
    left: 0.5rem;
    top: 0.5rem;
    min-width: auto;
    max-width: none;
    padding: 0.75rem;
    font-size: 0.875rem;
    line-height: 1.4;
  }
  
  .toast button {
    font-size: 1rem;
    padding: 0.25rem;
  }
  
  .toast .flex {
    gap: 0.5rem;
  }
}


/* ===== LEGACY COLOR CLASSES (for backward compatibility) ===== */
.text-calm-blue { color: var(--accent-primary); }
.text-calm-gray { color: var(--bg-primary); }
.text-calm-dark { color: var(--text-primary); }
.bg-calm-blue { background-color: var(--accent-primary); }
.bg-calm-gray { background-color: var(--bg-primary); }
.bg-calm-dark { background-color: var(--text-primary); }