/*
 * App Component Styles — unified .app-* system
 * Replaces .modern-* and .tech-* prefixes
 */

/* ========================================
   Global Reset & Base
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  min-height: 100vh;
}

body {
  font-family: var(--app-font);
  line-height: 1.6;
  color: var(--app-text);
  background: var(--app-page-bg);
}

/* ========================================
   Animations
   ======================================== */

@keyframes app-slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.app-animate-slideUp {
  animation: app-slideUp 0.5s ease-out;
}

.app-loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--app-border);
  border-top-color: #6366f1;
  border-radius: 50%;
  animation: app-spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

/* ========================================
   Login Page
   ======================================== */

.app-login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  background:
    radial-gradient(circle at top left, rgba(76, 110, 245, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(71, 85, 105, 0.1), transparent 24%),
    linear-gradient(180deg, var(--app-bg-start) 0%, var(--app-bg-mid) 48%, var(--app-bg-end) 100%);
  background-attachment: fixed;
}

.app-login-card {
  width: 100%;
  max-width: 440px;
  background: var(--app-surface-strong);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-2xl);
  padding: 40px 36px;
  box-shadow: var(--app-shadow);
  animation: app-slideUp 0.5s ease-out;
}

.app-login-logo {
  text-align: center;
  margin-bottom: var(--app-space-xl);
}

.app-login-logo-icon {
  width: 72px;
  height: 72px;
  background: var(--app-brand-gradient);
  border-radius: var(--app-radius-xl);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 32px;
  margin-bottom: var(--app-space-md);
  box-shadow: 0 14px 28px -18px rgba(76, 110, 245, 0.45);
}

.app-login-title {
  font-size: var(--app-font-size-2xl);
  font-weight: 700;
  color: var(--app-heading);
  margin-bottom: 6px;
}

.app-login-subtitle {
  font-size: var(--app-font-size-md);
  color: var(--app-muted);
}

.app-login-error {
  color: var(--app-danger);
  text-align: center;
  margin-bottom: var(--app-space-md);
  font-size: var(--app-font-size);
  min-height: 20px;
}

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

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

.app-login-footer i {
  color: var(--app-brand);
  margin-right: 6px;
}

/* ========================================
   Form Components
   ======================================== */

.app-input-group {
  margin-bottom: var(--app-space-md);
}

.app-label {
  display: block;
  margin-bottom: var(--app-space-sm);
  font-size: var(--app-font-size);
  font-weight: 500;
  color: var(--app-body);
}

.app-label i {
  color: var(--app-brand);
  margin-right: 8px;
}

.app-input,
.app-select {
  width: 100%;
  min-height: 48px;
  padding: 14px 16px;
  font-size: var(--app-font-size-md);
  color: var(--app-text);
  background: var(--app-surface-muted);
  border: 2px solid var(--app-border);
  border-radius: var(--app-radius);
  transition: border-color var(--app-transition), box-shadow var(--app-transition), background-color var(--app-transition);
  outline: none;
}

.app-input:focus,
.app-select:focus {
  border-color: var(--app-brand);
  background: var(--app-surface-strong);
  box-shadow: 0 0 0 4px var(--app-brand-glow);
}

.app-input.input-valid,
.app-select.input-valid {
  border-color: var(--app-success);
  background: var(--app-surface-strong);
  box-shadow: 0 0 0 4px var(--app-success-soft);
}

.app-input.input-invalid,
.app-select.input-invalid {
  border-color: var(--app-danger);
  background: var(--app-surface-strong);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12);
}

.app-input::placeholder {
  color: var(--app-hint);
}

.app-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364758b'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3e%3c/path%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 40px;
}

.app-input-icon-wrapper {
  position: relative;
}

.app-input-icon {
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  color: var(--app-hint);
  pointer-events: none;
}

.app-input-icon-wrapper .app-select,
.app-input-icon-wrapper .app-input {
  padding-left: 44px !important;
}

/* ========================================
   Buttons
   ======================================== */

.app-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--app-radius);
  font-size: var(--app-font-size);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--app-transition-fast), box-shadow var(--app-transition), background-color var(--app-transition), border-color var(--app-transition), color var(--app-transition);
}

.app-btn:hover {
  transform: translateY(-1px);
}

.app-btn:active {
  transform: translateY(0);
}

.app-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.app-btn-primary {
  color: #fff;
  background: var(--app-brand-gradient);
  box-shadow: var(--app-shadow-btn);
}

.app-btn-primary:hover {
  box-shadow: 0 14px 24px -14px rgba(76, 110, 245, 0.52);
}

.app-btn-secondary {
  color: #334155;
  background: var(--app-surface-muted);
  border-color: var(--app-border);
}

.app-btn-secondary:hover {
  background: #e4eaf3;
}

.app-btn-tertiary {
  color: #4f5d72;
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.app-btn-tertiary:hover {
  color: var(--app-brand-end);
  background: var(--app-brand-soft);
  border-color: rgba(76, 110, 245, 0.12);
}

.app-btn-danger {
  color: #fff;
  background: var(--app-danger-gradient);
  box-shadow: 0 18px 30px -24px rgba(184, 80, 90, 0.44);
}

.app-btn-success {
  color: #fff;
  background: linear-gradient(180deg, #5a8f7f 0%, #446f63 100%);
  box-shadow: 0 14px 24px -18px rgba(90, 143, 127, 0.42);
}

.app-btn-warning {
  color: #5f4f29;
  background: rgba(213, 182, 116, 0.14);
  border-color: rgba(185, 150, 72, 0.24);
  box-shadow: none;
}

/* ========================================
   Cards
   ======================================== */

.app-card {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-3xl);
  box-shadow: var(--app-shadow-soft);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.app-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--app-space-lg);
  padding: 26px 32px;
  background: linear-gradient(180deg, rgba(248, 250, 253, 0.98) 0%, rgba(242, 246, 251, 0.96) 100%);
  border-bottom: 1px solid var(--app-border);
}

.app-card-header h2,
.app-card-header h3,
.app-card-header h4,
.app-card-header h5 {
  color: var(--app-heading);
}

.app-card-body {
  padding: 28px 32px 32px;
}

/* ========================================
   Tabs
   ======================================== */

.app-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--app-space-md);
  padding: 18px;
  border-radius: var(--app-radius-2xl);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--app-border);
  box-shadow: var(--app-shadow-soft);
  backdrop-filter: blur(10px);
}

.app-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid #d9e2ef;
  border-radius: var(--app-radius);
  background: #f7f9fc;
  color: #526072;
  font-size: var(--app-font-size);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--app-transition), color var(--app-transition), border-color var(--app-transition), box-shadow var(--app-transition), transform var(--app-transition-fast);
}

.app-tab:hover {
  background: #edf2fb;
  border-color: rgba(76, 110, 245, 0.24);
  color: #253141;
}

.app-tab.active,
.app-tab[aria-selected="true"] {
  color: #fff;
  background: var(--app-brand-gradient);
  border-color: transparent;
  box-shadow: 0 18px 30px -24px rgba(53, 87, 214, 0.62);
}

/* ========================================
   Page Shell
   ======================================== */

.app-page {
  width: min(1320px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
  position: relative;
  z-index: 1;
}

.app-page-shell {
  display: flex;
  flex-direction: column;
  gap: var(--app-space-2xl);
}

.app-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--app-space-lg);
  padding: 32px 36px;
  border-radius: var(--app-radius-3xl);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--app-border);
  box-shadow: var(--app-shadow-soft);
  backdrop-filter: blur(12px);
}

.app-page-title {
  font-size: var(--app-font-size-3xl);
  line-height: 1.15;
  font-weight: 700;
  color: var(--app-heading);
}

.app-page-subtitle {
  margin-top: 12px;
  font-size: var(--app-font-size-md);
  color: var(--app-muted);
}

.app-section-title {
  font-size: var(--app-font-size-lg);
  font-weight: 700;
  color: var(--app-heading);
}

/* ========================================
   Toolbar
   ======================================== */

.app-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--app-space-md);
}

.app-panel {
  padding: var(--app-space-lg);
  background: var(--app-surface-strong);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-2xl);
  box-shadow: var(--app-shadow-soft);
}

.app-panel-muted {
  background: var(--app-surface-muted);
  box-shadow: none;
  border: none;
  border-radius: var(--app-radius-lg);
}

/* ========================================
   Modal
   ======================================== */

.app-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.46);
}

.app-modal-overlay.hidden {
  display: none !important;
}

.app-modal-dialog {
  width: min(100%, 720px);
  max-height: min(88vh, 960px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--app-surface-strong);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-2xl);
  box-shadow: var(--app-shadow);
}

.app-modal-dialog-sm {
  max-width: 440px;
}

.app-modal-dialog-md {
  max-width: 640px;
}

.app-modal-dialog-lg {
  max-width: 880px;
}

.app-modal-dialog-xl {
  max-width: 1120px;
}

.app-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--app-space-md);
  padding: 22px 24px;
  border-bottom: 1px solid var(--app-border);
  background: linear-gradient(180deg, rgba(248, 250, 253, 0.98) 0%, rgba(242, 246, 251, 0.96) 100%);
}

.app-modal-header-copy {
  flex: 1;
  min-width: 0;
}

.app-modal-title {
  font-size: var(--app-font-size-xl);
  line-height: 1.2;
  font-weight: 700;
  color: var(--app-heading);
}

.app-modal-subtitle {
  margin-top: 6px;
  font-size: var(--app-font-size-sm);
  color: var(--app-muted);
}

.app-modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  background: #f8fafc;
  color: #475569;
  cursor: pointer;
  transition: background-color var(--app-transition), border-color var(--app-transition), color var(--app-transition), transform var(--app-transition-fast);
}

.app-modal-close:hover,
.app-modal-close:focus-visible {
  background: #eef2f7;
  border-color: var(--app-border-hover);
  color: var(--app-heading);
}

.app-modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 24px;
}

.app-modal-body > * + * {
  margin-top: var(--app-space-md);
}

.app-modal-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--app-space-md);
  padding: 18px 24px 24px;
  border-top: 1px solid var(--app-border);
  background: var(--app-surface-strong);
}

/* ========================================
   Table
   ======================================== */

.app-table-container {
  overflow-x: auto;
  border-radius: var(--app-radius-lg);
  border: 1px solid var(--app-border);
  background: var(--app-surface-strong);
}

.app-table {
  width: 100%;
  border-collapse: collapse;
}

.app-table thead {
  background: linear-gradient(180deg, #f8fafc 0%, #f2f6fb 100%);
}

.app-table th,
.app-table td {
  padding: 14px 16px;
  text-align: left;
}

.app-table th {
  color: #334155;
  font-size: var(--app-font-size-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(148, 163, 184, 0.28);
}

.app-table td {
  color: var(--app-text);
  border-bottom: 1px solid rgba(226, 232, 240, 0.88);
}

.app-table tbody tr:hover {
  background: #f5f8fd;
}

/* ========================================
   Badge
   ======================================== */

.app-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: var(--app-font-size-xs);
  font-weight: 500;
  border-radius: 999px;
}

.app-badge-success {
  background: rgba(90, 143, 127, 0.14);
  color: var(--app-success);
}

.app-badge-warning {
  background: rgba(213, 182, 116, 0.14);
  color: var(--app-warning);
}

.app-badge-danger {
  background: rgba(203, 109, 118, 0.14);
  color: var(--app-danger);
}

.app-badge-info {
  background: var(--app-brand-soft);
  color: var(--app-brand);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 900px) {
  .app-page-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .app-card-header {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .app-login-card {
    padding: 32px 24px;
    margin: 16px;
  }

  .app-login-title {
    font-size: var(--app-font-size-xl);
  }

  .app-btn {
    padding: 14px 20px;
    font-size: var(--app-font-size-md);
  }

  .app-tabs {
    flex-wrap: wrap;
  }

  .app-modal-overlay {
    padding: 16px;
    align-items: flex-end;
  }

  .app-modal-dialog {
    width: 100%;
    max-height: min(92vh, 100%);
    border-radius: var(--app-radius-xl) var(--app-radius-xl) 0 0;
  }

  .app-modal-header,
  .app-modal-body,
  .app-modal-footer {
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (max-width: 640px) {
  .app-login-card {
    padding: 32px 22px;
  }

  .app-tabs {
    gap: 8px;
    padding: 10px;
  }

  .app-tab {
    width: 100%;
    justify-content: flex-start;
  }

  .app-page-header {
    padding: 24px 20px;
  }

  .app-card-body,
  .app-card-header,
  .app-panel {
    padding-left: 20px;
    padding-right: 20px;
  }
}

/* ========================================
   Bootstrap error banner (legacy)
   ======================================== */

.app-bootstrap-error-banner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 10px 16px;
  background: var(--app-danger);
  color: #fff;
  text-align: center;
  z-index: 9999;
}

/* ========================================
   Modal focus trap
   ======================================== */

.modal-focus-trap {
  outline: none;
}