/* ==============================================
   Global Styles — Reset, Base, Utilities
   ============================================== */

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

/* ---- Base ---- */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
}

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

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

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

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

/* ---- Focus Accessibility ---- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
}

/* ---- Layout Utilities ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.flex {
  display: flex;
}

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

.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

.max-w-600 {
  max-width: 600px;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ---- Text Utilities ---- */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }
.text-muted { color: var(--color-gray-500); }

/* ---- Spacing Utilities ---- */
.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.p-4 { padding: var(--spacing-4); }

/* ---- Back Button ---- */
.back-button,
.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--color-gray-700);
  cursor: pointer;
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast);
}

.back-button:hover,
.back-btn:hover {
  background: var(--color-gray-100);
}

/* ---- Animations ---- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

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

.animate-spin {
  animation: spin 1s linear infinite;
}

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

/* ---- Flash Messages ---- */
.flash-messages {
  position: fixed;
  top: var(--spacing-4);
  right: var(--spacing-4);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.flash-message {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.3s ease-out;
  max-width: 400px;
}

.flash-message-success {
  background: var(--color-success-light);
  color: var(--color-success-dark);
  border: 1px solid var(--color-success-border);
}

.flash-message-error {
  background: var(--color-error-light);
  color: var(--color-error-dark);
  border: 1px solid var(--color-error-border);
}

.flash-message-warning {
  background: var(--color-warning-light);
  color: var(--color-warning-dark);
  border: 1px solid var(--color-warning-border);
}

.flash-message-info {
  background: var(--color-info-light);
  color: var(--color-info-dark);
  border: 1px solid var(--color-info-border);
}

.flash-message-close {
  margin-left: auto;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: var(--spacing-1);
  opacity: 0.7;
}

.flash-message-close:hover {
  opacity: 1;
}

/* ---- Page Header ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-5) var(--spacing-6);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-100);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.page-header-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-gray-900);
  letter-spacing: -0.02em;
}

.page-content {
  padding: var(--spacing-6);
}

/* ---- Loading Spinner ---- */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
}

.loading-spinner::after {
  content: '';
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

/* ---- Table Styles ---- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.data-table th {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  font-weight: 600;
  color: var(--color-gray-600);
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
}

.data-table td {
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
}

.data-table tr:hover td {
  background: var(--color-gray-50);
}

/* ---- Card ---- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  border: 1px solid var(--color-gray-100);
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.card-header {
  padding: var(--spacing-4) var(--spacing-5);
  border-bottom: 1px solid var(--color-gray-100);
}

.card-body {
  padding: var(--spacing-5);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-5);
  border-top: 1px solid var(--color-gray-100);
}

/* ---- Pagination ---- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4);
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--color-gray-50);
  border-color: var(--color-gray-300);
}

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

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

/* ---- Page Transition ---- */
@keyframes pageEnter {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-transition {
  animation: pageEnter 0.35s ease-out;
}

/* ---- Skeleton Loaders ---- */
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-200) 50%, var(--color-gray-100) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--spacing-2);
  border-radius: var(--radius-sm);
}

.skeleton-text:last-child {
  width: 60%;
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-xl);
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}


/* ---- Back to Top ---- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-white);
  color: var(--color-gray-600);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
  z-index: 90;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl);
}

@media (max-width: 1023px) {
  .back-to-top {
    bottom: 24px;
  }
}

/* ---- Slide-Up Animations ---- */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-slideUp {
  animation: slideUp 0.4s ease-out both;
}

.animate-delay-1 { animation-delay: 0.05s; }
.animate-delay-2 { animation-delay: 0.1s; }
.animate-delay-3 { animation-delay: 0.15s; }
.animate-delay-4 { animation-delay: 0.2s; }
.animate-delay-5 { animation-delay: 0.25s; }

/* ---- Network Error Banner ---- */
.network-error-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-error);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: 500;
  z-index: 400;
  transform: translateY(-100%);
  transition: transform var(--transition-normal);
}

.network-error-banner.visible {
  transform: translateY(0);
}

.network-error-retry {
  padding: var(--spacing-1) var(--spacing-3);
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.network-error-retry:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ==============================================
   Professional Utility Classes
   ============================================== */

/* ---- Responsive Visibility ---- */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}
@media (min-width: 769px) and (max-width: 1023px) {
  .hide-tablet { display: none !important; }
}
@media (min-width: 1024px) {
  .hide-desktop { display: none !important; }
}
@media (min-width: 769px) {
  .show-mobile-only { display: none !important; }
}

/* ---- Layout Helpers ---- */
.stack-mobile {
  display: flex;
  gap: var(--spacing-4);
}
@media (max-width: 768px) {
  .stack-mobile {
    flex-direction: column;
  }
}

.full-width-mobile { width: auto; }
@media (max-width: 768px) {
  .full-width-mobile { width: 100%; }
}

/* ---- Card Elevated ---- */
.card-elevated {
  background: var(--color-white);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--color-gray-100);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.card-elevated:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
}
@media (max-width: 1023px) {
  .card-elevated:hover {
    transform: none;
  }
  .card-elevated:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }
}

/* ---- Text Gradient ---- */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Section Divider ---- */
.section-divider {
  height: 1px;
  background: var(--color-gray-100);
  border: none;
  margin: var(--spacing-6) 0;
}

/* ---- Accent Top Border ---- */
.accent-top {
  position: relative;
}
.accent-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--card-radius) var(--card-radius) 0 0;
}

/* ---- Icon Circle ---- */
.icon-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.icon-circle-sm { width: 36px; height: 36px; }
.icon-circle-md { width: 44px; height: 44px; }
.icon-circle-lg { width: 56px; height: 56px; }

.icon-circle-primary {
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
}
.icon-circle-success {
  background: var(--color-success-subtle);
  color: var(--color-success);
}
.icon-circle-warning {
  background: var(--color-warning-subtle);
  color: var(--color-warning);
}
.icon-circle-info {
  background: var(--color-info-subtle);
  color: var(--color-info);
}
.icon-circle-error {
  background: var(--color-error-subtle);
  color: var(--color-error);
}
.icon-circle-purple {
  background: var(--color-purple-subtle);
  color: var(--color-purple);
}

/* ==============================================
   Responsive Table → Card Component
   ============================================== */
.responsive-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--font-size-sm);
}

.responsive-table thead th {
  background: var(--color-gray-50);
  padding: var(--spacing-3) var(--spacing-4);
  font-weight: 600;
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-gray-200);
  white-space: nowrap;
}

.responsive-table thead th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}
.responsive-table thead th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.responsive-table tbody td {
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

.responsive-table tbody tr:last-child td {
  border-bottom: none;
}

.responsive-table tbody tr:hover td {
  background: var(--color-gray-50);
}

/* Mobile: rows become cards */
@media (max-width: 768px) {
  .responsive-table,
  .responsive-table thead,
  .responsive-table tbody,
  .responsive-table th,
  .responsive-table td,
  .responsive-table tr {
    display: block;
  }

  .responsive-table thead {
    display: none;
  }

  .responsive-table tbody tr {
    background: var(--color-white);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--color-gray-100);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-3);
  }

  .responsive-table tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-gray-50);
  }

  .responsive-table tbody td:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .responsive-table tbody td:first-child {
    padding-top: 0;
  }

  .responsive-table tbody td::before {
    content: attr(data-label);
    font-weight: 600;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    flex-shrink: 0;
    margin-right: var(--spacing-3);
  }

  .responsive-table tbody tr:hover td {
    background: transparent;
  }
}

/* ==============================================
   Page Banner — Gradient header for every page
   ============================================== */
.page-banner {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-8) var(--spacing-6);
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
}

.page-banner::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -5%;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-full);
}

.page-banner-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.page-banner-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  flex-shrink: 0;
}

.page-banner-icon svg {
  width: 18px;
  height: 18px;
}

.page-banner-text {
  flex: 1;
}

.page-banner-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 2px;
}

.page-banner-subtitle {
  font-size: var(--font-size-sm);
  opacity: 0.85;
  font-weight: 400;
}

/* Hide page-banner globally — greeting is now in topbar/page-header */
.page-banner {
  display: none !important;
}

.page-banner-action {
  position: relative;
  z-index: 1;
}

/* Banner variants */
.page-banner-sm {
  padding: 12px 28px;
}

.page-banner-sm .page-banner-title {
  font-size: 15px;
}

.page-banner-sm .page-banner-icon {
  width: 34px;
  height: 34px;
}

.page-banner-sm .page-banner-icon svg {
  width: 16px;
  height: 16px;
}

@media (max-width: 768px) {
  .page-banner {
    padding: var(--spacing-5) var(--spacing-4);
  }
  .page-banner-title {
    font-size: var(--font-size-xl);
  }
  .page-banner-icon {
    width: 48px;
    height: 48px;
  }
}

/* ==============================================
   Section Card — Content section wrapper
   ============================================== */
.section-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-100);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.03);
  overflow: hidden;
}

.section-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-5);
  border-bottom: 1px solid var(--color-gray-100);
}

.section-card-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.section-card-header-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

.section-card-header-icon svg {
  width: 20px;
  height: 20px;
}

.section-card-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-gray-900);
}

.section-card-body {
  padding: var(--spacing-5);
}

.section-card-footer {
  padding: var(--spacing-4) var(--spacing-5);
  border-top: 1px solid var(--color-gray-100);
  background: var(--color-gray-50);
}

/* ==============================================
   Section Header — For content sections
   ============================================== */
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-5);
}

.section-heading-bar {
  width: 4px;
  height: 24px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.section-heading-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-gray-900);
  letter-spacing: -0.01em;
}

.section-heading-action {
  margin-left: auto;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.section-heading-action:hover {
  color: var(--color-primary-dark);
}

/* ==============================================
   Gradient CTA Card
   ============================================== */
.cta-card {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
}

.cta-card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
  position: relative;
  z-index: 1;
}

.cta-card-text {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin-bottom: var(--spacing-6);
  position: relative;
  z-index: 1;
}

.cta-card .btn {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.cta-card .btn:hover {
  background: var(--color-white);
  color: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}