// ============================================
// BILLIT - Component Styles
// Industrial, Dense, McMaster-Carr Inspired
// ============================================

@use 'sass:color';
@use 'variables' as *;

// ============================================
// LAYOUT
// ============================================

.container {
  width: 100%;
  max-width: $max-width-xl;
  margin: 0 auto;
  padding: 0 $spacing-8;
}

.container-sm {
  max-width: $max-width-sm;
}

.container-md {
  max-width: $max-width-md;
}

.page {
  padding: $spacing-8 0;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: $spacing-8;
  padding-bottom: $spacing-4;
  border-bottom: $border-width-2 solid $color-black;
}

.page-title {
  font-size: $font-size-xl;
  font-weight: $font-weight-bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

// ============================================
// HEADER / NAV
// ============================================

.header {
  background: $header-bg;
  color: $header-text;
  height: $header-height;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: $max-width-xl;
  margin: 0 auto;
  padding: 0 $spacing-8;
}

.header-logo {
  font-size: $font-size-lg;
  font-weight: $font-weight-bold;
  color: $color-primary;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  
  &:hover {
    color: $color-primary-light;
    text-decoration: none;
  }
}

.header-nav {
  display: flex;
  align-items: center;
  gap: $spacing-1;
}

.header-link {
  display: inline-flex;
  align-items: center;
  height: $header-height;
  padding: 0 $spacing-6;
  color: $color-gray-300;
  font-size: $font-size-sm;
  font-weight: $font-weight-medium;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid transparent;
  transition: all $transition-fast;
  
  &:hover {
    color: $color-white;
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
  }
  
  &.active {
    color: $color-primary;
    border-bottom-color: $color-primary;
  }
}

// ============================================
// BUTTONS
// ============================================

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: $btn-height;
  padding: $btn-padding;
  font-size: $font-size-sm;
  font-weight: $font-weight-semibold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none;
  border: $border-width solid transparent;
  border-radius: $border-radius;
  cursor: pointer;
  transition: all $transition-fast;
  white-space: nowrap;
  
  &:hover {
    text-decoration: none;
  }
  
  &:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
}

.btn-primary {
  background: $color-primary;
  color: $color-white;
  border-color: $color-primary;
  
  &:hover:not(:disabled) {
    background: $color-primary-dark;
    border-color: $color-primary-dark;
  }
}

.btn-secondary {
  background: $color-gray-800;
  color: $color-white;
  border-color: $color-gray-800;
  
  &:hover:not(:disabled) {
    background: $color-black;
    border-color: $color-black;
  }
}

.btn-outline {
  background: transparent;
  color: $color-gray-800;
  border-color: $color-gray-400;
  
  &:hover:not(:disabled) {
    background: $color-gray-100;
    border-color: $color-gray-600;
  }
}

.btn-danger {
  background: $color-error;
  color: $color-white;
  border-color: $color-error;
  
  &:hover:not(:disabled) {
    background: color.adjust($color-error, $lightness: -10%);
    border-color: color.adjust($color-error, $lightness: -10%);
  }
}

.btn-link {
  background: none;
  color: $color-accent;
  border: none;
  padding: 0;
  height: auto;
  text-transform: none;
  letter-spacing: normal;
  font-weight: $font-weight-normal;
  
  &:hover:not(:disabled) {
    text-decoration: underline;
  }
}

.btn-sm {
  height: 24px;
  padding: $spacing-1 $spacing-4;
  font-size: $font-size-xs;
}

.btn-lg {
  height: 36px;
  padding: $spacing-4 $spacing-8;
  font-size: $font-size-md;
}

// ============================================
// FORMS
// ============================================

.form-group {
  margin-bottom: $spacing-6;
}

.form-row {
  display: grid;
  gap: $spacing-6;
  
  &.cols-2 { grid-template-columns: repeat(2, 1fr); }
  &.cols-3 { grid-template-columns: repeat(3, 1fr); }
  &.cols-4 { grid-template-columns: repeat(4, 1fr); }
  &.cols-5 { grid-template-columns: repeat(5, 1fr); }
}

.form-label {
  display: block;
  margin-bottom: $spacing-2;
  font-size: $font-size-xs;
  font-weight: $font-weight-semibold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: $color-gray-700;
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  height: $input-height;
  padding: $input-padding;
  font-size: $font-size-base;
  color: $color-gray-900;
  background: $input-bg;
  border: $border-width solid $input-border;
  border-radius: $border-radius;
  transition: border-color $transition-fast;
  
  &:focus {
    border-color: $input-focus-border;
    outline: none;
  }
  
  &::placeholder {
    color: $color-gray-400;
  }
  
  &:disabled {
    background: $color-gray-100;
    cursor: not-allowed;
  }
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%23757575' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right $spacing-2 center;
  background-size: 16px;
  padding-right: $spacing-12;
}

.form-textarea {
  height: auto;
  min-height: 80px;
  resize: vertical;
}

.form-hint {
  margin-top: $spacing-2;
  font-size: $font-size-xs;
  color: $color-gray-500;
}

.form-error {
  margin-top: $spacing-2;
  font-size: $font-size-xs;
  color: $color-error;
}

// ============================================
// TABLES - Dense, Data-focused
// ============================================

.table-wrapper {
  overflow-x: auto;
  border: $border-width solid $table-border;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: $font-size-sm;
}

.table th,
.table td {
  padding: $table-cell-padding;
  text-align: left;
  border-bottom: $border-width solid $table-border;
  vertical-align: middle;
}

.table th {
  background: $table-header-bg;
  font-weight: $font-weight-semibold;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-size: $font-size-xs;
  color: $color-gray-700;
  white-space: nowrap;
}

.table tbody tr:hover {
  background: $table-row-hover;
}

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

.table-numeric {
  text-align: right;
  font-family: $font-family-mono;
  font-size: $font-size-sm;
}

.table-actions {
  text-align: right;
  white-space: nowrap;
}

.table-empty {
  padding: $spacing-12 !important;
  text-align: center;
  color: $color-gray-500;
}

// ============================================
// CARDS / PANELS
// ============================================

.card {
  background: $color-white;
  border: $border-width solid $border-color;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: $spacing-4 $spacing-6;
  background: $color-gray-100;
  border-bottom: $border-width solid $border-color;
}

.card-title {
  font-size: $font-size-sm;
  font-weight: $font-weight-bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-body {
  padding: $spacing-6;
}

.panel {
  background: $color-white;
  border: $border-width solid $border-color;
  margin-bottom: $spacing-8;
}

.panel-header {
  padding: $spacing-3 $spacing-4;
  background: $color-black;
  color: $color-white;
  font-size: $font-size-xs;
  font-weight: $font-weight-bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.panel-body {
  padding: $spacing-4;
}

// ============================================
// ALERTS / MESSAGES
// ============================================

.alert {
  padding: $spacing-4 $spacing-6;
  border: $border-width solid;
  margin-bottom: $spacing-6;
  font-size: $font-size-sm;
}

.alert-error {
  background: color.adjust($color-error, $lightness: 45%);
  border-color: $color-error;
  color: $color-error;
}

.alert-success {
  background: color.adjust($color-success, $lightness: 50%);
  border-color: $color-success;
  color: $color-success;
}

.alert-warning {
  background: color.adjust($color-warning, $lightness: 40%);
  border-color: $color-warning;
  color: color.adjust($color-warning, $lightness: -15%);
}

.alert-info {
  background: color.adjust($color-info, $lightness: 45%);
  border-color: $color-info;
  color: $color-info;
}

// ============================================
// BADGES / TAGS
// ============================================

.badge {
  display: inline-block;
  padding: $spacing-1 $spacing-3;
  font-size: $font-size-xs;
  font-weight: $font-weight-semibold;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  background: $color-gray-200;
  color: $color-gray-700;
}

.badge-primary {
  background: $color-primary;
  color: $color-white;
}

.badge-success {
  background: $color-success;
  color: $color-white;
}

// ============================================
// INVOICE SPECIFIC
// ============================================

.invoice {
  background: $color-white;
}

.invoice-header {
  display: flex;
  justify-content: space-between;
  padding-bottom: $spacing-6;
  margin-bottom: $spacing-6;
  border-bottom: $border-width-2 solid $color-black;
}

.invoice-title {
  font-size: $font-size-2xl;
  font-weight: $font-weight-bold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.invoice-meta {
  text-align: right;
  font-size: $font-size-md;
  color: $color-gray-600;
}

.invoice-table {
  width: 100%;
  margin-bottom: $spacing-8;
  border: $border-width solid $color-black;
  
  th, td {
    padding: $spacing-3 $spacing-4;
    border: $border-width solid $color-gray-300;
  }
  
  th {
    background: $color-black;
    color: $color-white;
    font-size: $font-size-xs;
    font-weight: $font-weight-bold;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    text-align: left;
  }
  
  tbody tr:nth-child(even) {
    background: $color-gray-50;
  }
}

.invoice-summary {
  display: flex;
  justify-content: flex-end;
}

.invoice-totals {
  width: 300px;
  margin-left: auto;
  border: $border-width solid $color-black;
  
  .row {
    display: flex;
    justify-content: space-between;
    padding: $spacing-3 $spacing-4;
    border-bottom: $border-width solid $color-gray-300;
    font-size: $font-size-sm;
    
    &:last-child {
      border-bottom: none;
    }
  }
  
  .row-total {
    background: $color-black;
    color: $color-white;
    font-weight: $font-weight-bold;
    font-size: $font-size-md;
  }
}

.invoice-qr {
  display: flex;
  justify-content: flex-end;
  padding: $spacing-8;
}

// ============================================
// PRODUCT ROW (for billing form)
// ============================================

.product-row {
  padding: $spacing-4;
  border: $border-width solid $border-color;
  margin-bottom: $spacing-2;
  background: $color-gray-50;
  
  &:hover {
    background: $color-white;
  }
}

.product-row-grid {
  display: grid;
  grid-template-columns: 3fr 1fr auto;
  gap: $spacing-4;
  align-items: end;
}

// ============================================
// LOGIN / AUTH
// ============================================

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: $color-gray-100;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: $color-white;
  border: $border-width-2 solid $color-black;
}

.auth-header {
  padding: $spacing-8 $spacing-8 $spacing-6;
  text-align: center;
  border-bottom: $border-width solid $border-color;
}

.auth-logo {
  font-size: $font-size-3xl;
  font-weight: $font-weight-bold;
  color: $color-primary;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: $spacing-2;
}

.auth-subtitle {
  font-size: $font-size-sm;
  color: $color-gray-600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-body {
  padding: $spacing-8;
}

.auth-footer {
  padding: $spacing-4 $spacing-8;
  text-align: center;
  background: $color-gray-50;
  border-top: $border-width solid $border-color;
  font-size: $font-size-sm;
}

// ============================================
// HOME
// ============================================

.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: $spacing-6;
}

.home-card {
  display: block;
  padding: $spacing-6;
  background: $color-white;
  border: $border-width-2 solid $border-color;
  text-decoration: none;
  transition: all $transition-fast;
  
  &:hover {
    border-color: $color-black;
    text-decoration: none;
  }
}

.home-card-icon {
  width: 32px;
  height: 32px;
  margin-bottom: $spacing-4;
  color: $color-primary;
}

.home-card-title {
  font-size: $font-size-lg;
  font-weight: $font-weight-bold;
  color: $color-black;
  margin-bottom: $spacing-2;
}

.home-card-desc {
  font-size: $font-size-sm;
  color: $color-gray-600;
}

.logged-in-as {
  font-size: $font-size-sm;
  color: $color-gray-600;
  
  strong {
    color: $color-black;
    font-weight: $font-weight-medium;
  }
}

.home-sections {
  margin-top: $spacing-8;
  display: flex;
  flex-direction: column;
  gap: $spacing-8;
}

.home-section {
  background: $color-white;
  border: $border-width solid $border-color;
  padding: $spacing-6;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: $spacing-4;
}

.section-title {
  font-size: $font-size-lg;
  font-weight: $font-weight-semibold;
  color: $color-black;
  margin: 0;
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: $spacing-3;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: $spacing-3;
  background: $color-gray-50;
  border: $border-width solid $border-color;
  transition: background $transition-fast;
  
  &:hover {
    background: $color-gray-100;
  }
}

.recent-item-main {
  display: flex;
  flex-direction: column;
  gap: $spacing-1;
  text-decoration: none;
  color: inherit;
}

a.recent-item-main {
  &:hover {
    text-decoration: none;
  }
}

.recent-item-title {
  font-weight: $font-weight-medium;
  color: $color-black;
}

.recent-item-sub {
  font-size: $font-size-sm;
  color: $color-gray-500;
}

.recent-item-value {
  font-weight: $font-weight-medium;
  color: $color-black;
  font-family: $font-family-mono;
}

.text-accent {
  color: $color-primary;
  text-decoration: none;
  
  &:hover {
    text-decoration: underline;
  }
}

.text-muted {
  color: $color-gray-600;
  font-size: $font-size-sm;
}

// ============================================
// RESPONSIVE
// ============================================

@media (max-width: 768px) {
  .container {
    padding: 0 $spacing-4;
  }
  
  .header-inner {
    padding: 0 $spacing-4;
  }
  
  .form-row {
    &.cols-2,
    &.cols-3,
    &.cols-4,
    &.cols-5 {
      grid-template-columns: 1fr;
    }
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: $spacing-4;
  }
  
  .product-row-grid {
    grid-template-columns: 1fr;
  }
}

// ============================================
// ERROR PAGE
// ============================================

.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: $spacing-8;
  background: $color-gray-100;
}

.error-card {
  text-align: center;
  padding: $spacing-12 $spacing-8;
  background: $color-white;
  border: $border-width solid $border-color;
  max-width: 500px;
  width: 100%;
}

.error-code {
  font-size: 6rem;
  font-weight: $font-weight-bold;
  line-height: 1;
  color: $color-gray-300;
  margin-bottom: $spacing-4;
}

.error-title {
  font-size: $font-size-xl;
  font-weight: $font-weight-bold;
  color: $color-black;
  margin-bottom: $spacing-4;
}

.error-message {
  font-size: $font-size-md;
  color: $color-gray-600;
  margin-bottom: $spacing-8;
  line-height: 1.5;
}

.error-actions {
  display: flex;
  gap: $spacing-4;
  justify-content: center;
}

// ============================================
// ACCOUNT PAGE
// ============================================

.account-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: $spacing-6;
  
  @media (min-width: 768px) {
    grid-template-columns: 1fr 1fr;
  }
}

.account-section {
  background: $color-white;
  border: $border-width solid $border-color;
  padding: $spacing-6;
  display: flex;
  flex-direction: column;
}

.account-details {
  display: flex;
  flex-direction: column;
  gap: $spacing-4;
}

.account-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: auto;
  padding-top: $spacing-4;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: $spacing-3 0;
  border-bottom: 1px solid $color-gray-200;
  
  &:last-child {
    border-bottom: none;
  }
}

.detail-label {
  font-weight: $font-weight-medium;
  color: $color-gray-600;
}

.detail-value {
  color: $color-black;
}

.password-form {
  display: flex;
  flex-direction: column;
  gap: $spacing-4;
}

// ============================================
// EMPTY STATE
// ============================================

.empty-state {
  text-align: center;
  padding: $spacing-12 $spacing-6;
  background: $color-white;
  border: $border-width solid $border-color;
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: $spacing-4;
}

.empty-state-title {
  font-size: $font-size-lg;
  font-weight: $font-weight-bold;
  color: $color-black;
  margin-bottom: $spacing-2;
}

.empty-state-desc {
  font-size: $font-size-md;
  color: $color-gray-600;
  margin-bottom: $spacing-6;
}

// ============================================
// DIALOG / MODAL
// ============================================

.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.dialog-overlay.dialog-open {
  opacity: 1;
  visibility: visible;
}

.dialog-box {
  background: $color-white;
  border: $border-width-2 solid $color-black;
  width: 100%;
  max-width: 400px;
  margin: $spacing-4;
  transform: scale(0.95);
  transition: transform 0.15s ease;
}

.dialog-open .dialog-box {
  transform: scale(1);
}

.dialog-header {
  padding: $spacing-4 $spacing-6;
  border-bottom: $border-width solid $border-color;
  background: $color-gray-100;
}

.dialog-title {
  font-size: $font-size-md;
  font-weight: $font-weight-bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
}

.dialog-body {
  padding: $spacing-6;
}

.dialog-message {
  font-size: $font-size-md;
  color: $color-gray-800;
  margin: 0;
  line-height: 1.5;
}

.dialog-footer {
  display: flex;
  gap: $spacing-3;
  justify-content: flex-end;
  padding: $spacing-4 $spacing-6;
  border-top: $border-width solid $border-color;
  background: $color-gray-100;
}

// Disclaimer specific styles
.disclaimer-content {
  font-size: $font-size-sm;
  line-height: 1.6;
  
  ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
  }
  
  li {
    padding: $spacing-2 0;
    padding-left: $spacing-4;
    border-left: 3px solid $color-primary;
    margin-bottom: $spacing-2;
    background: $color-gray-50;
  }
}