/* ========================================
   PEO Thailand - Shared Layout System
   Complete site-wide CSS
   ======================================== */

/* ========================================
   CSS Custom Properties (Brand Colors & Variables)
   ======================================== */
:root {
  /* Brand Colors */
  --color-navy: #1a365d;
  --color-blue: #2b6cb0;
  --color-light-grey: #f7fafc;
  --color-white: #ffffff;
  --color-dark-text: #2d3748;

  /* Neutral Colors */
  --color-grey-100: #f7fafc;
  --color-grey-200: #edf2f7;
  --color-grey-300: #e2e8f0;
  --color-grey-400: #cbd5e0;
  --color-grey-500: #a0aec0;
  --color-grey-600: #718096;
  --color-grey-700: #4a5568;
  --color-grey-800: #2d3748;
  --color-grey-900: #1a202c;

  /* Status Colors */
  --color-success: #22863a;
  --color-error: #cb2431;
  --color-warning: #ffa500;
  --color-info: #0366d6;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Borders & Radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-width: 1px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;

  /* Z-Index Stack */
  --z-dropdown: 100;
  --z-sticky: 500;
  --z-fixed: 1000;
  --z-modal-backdrop: 1200;
  --z-modal: 1300;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-dark-text);
  background-color: var(--color-white);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

/* ========================================
   Typography System
   ========================================*/

h1 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-navy);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-navy);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-navy);
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: var(--line-height-normal);
  color: var(--color-navy);
  margin-bottom: var(--spacing-sm);
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: var(--line-height-normal);
  color: var(--color-navy);
  margin-bottom: var(--spacing-sm);
}

h6 {
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: var(--line-height-normal);
  color: var(--color-navy);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-dark-text);
}

small {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-grey-600);
}

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-navy);
  text-decoration: underline;
}

/* ========================================
   Header & Navigation
   ========================================*/

#header {
  background-color: var(--color-white);
  border-bottom: var(--border-width) solid var(--color-grey-200);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-navy);
  text-decoration: none;
  transition: color var(--transition-base);
  white-space: nowrap;
}

.logo:hover {
  color: var(--color-blue);
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav a {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-dark-text);
  transition: color var(--transition-base);
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: var(--color-blue);
}

.nav a.active {
  font-weight: 600;
  position: relative;
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-blue);
}

.hamburger-menu {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  gap: 5px;
  padding: 0;
}

.hamburger-menu span {
  width: 25px;
  height: 3px;
  background-color: var(--color-navy);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.hamburger-menu.active span:nth-child(1) {
  transform: rotate(45deg) translateY(10px);
}

.hamburger-menu.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-10px);
}

/* Mobile Navigation */
@media (max-width: 767px) {
  .hamburger-menu {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background-color: var(--color-white);
    border-bottom: var(--border-width) solid var(--color-grey-200);
    padding: var(--spacing-md) var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    list-style: none;
  }

  .nav.active {
    max-height: 300px;
  }

  .nav a {
    display: block;
    padding: var(--spacing-md) 0;
    border-bottom: var(--border-width) solid var(--color-grey-100);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .nav a.active::after {
    display: none;
  }
}

/* ========================================
   Footer
   ========================================*/

#footer {
  background-color: var(--color-navy);
  color: var(--color-white);
  margin-top: var(--spacing-4xl);
  padding-top: var(--spacing-3xl);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-lg);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-3xl);
}

.footer-column h4 {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-column p {
  color: var(--color-grey-300);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
  color: var(--color-grey-300);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-column ul li a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer-column.contact-info p {
  color: var(--color-grey-300);
}

.footer-bottom {
  background-color: rgba(0, 0, 0, 0.1);
  border-top: var(--border-width) solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
  color: var(--color-grey-300);
  font-size: var(--font-size-sm);
}

/* ========================================
   Hero Section
   ========================================*/

.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 100%);
  position: relative;
  overflow: hidden;
  padding: var(--spacing-4xl) var(--spacing-lg);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   Container & Sections
   ========================================*/

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) var(--spacing-lg);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-navy);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

/* ========================================
   Card Grid (Tool Cards)
   ========================================*/

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.card {
  background-color: var(--color-white);
  border: var(--border-width) solid var(--color-grey-200);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-navy);
  margin: 0;
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-grey-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: var(--border-width) solid var(--color-grey-100);
}

.card-badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-light-grey);
  color: var(--color-navy);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-badge.category-payroll {
  background-color: #dbeafe;
  color: #1e40af;
}

.card-badge.category-tax {
  background-color: #fef3c7;
  color: #92400e;
}

.card-badge.category-compliance {
  background-color: #dbeafe;
  color: #1e40af;
}

.card-badge.category-hr {
  background-color: #f3e8ff;
  color: #6b21a8;
}

.card-link {
  color: var(--color-blue);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-base);
}

.card-link:hover {
  color: var(--color-navy);
}

/* ========================================
   App Layout
   ========================================*/

.app-layout {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.app-card {
  background-color: var(--color-white);
  border: var(--border-width) solid var(--color-grey-200);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
}

.app-card-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.app-card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-grey-600);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

/* ========================================
   Form Elements
   ========================================*/

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  font-weight: 500;
  color: var(--color-dark-text);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="date"],
input[type="month"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: var(--border-width) solid var(--color-grey-300);
  border-radius: var(--border-radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  background-color: var(--color-white);
  color: var(--color-dark-text);
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="date"]:focus,
input[type="month"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.1);
}

input[type="text"]::placeholder,
input[type="number"]::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
  color: var(--color-grey-500);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.input-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

@media (max-width: 767px) {
  .input-group {
    grid-template-columns: 1fr;
  }
}

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

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--color-navy);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: var(--color-grey-200);
  color: var(--color-dark-text);
  border: var(--border-width) solid var(--color-grey-300);
}

.btn-secondary:hover {
  background-color: var(--color-grey-300);
  border-color: var(--color-grey-400);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-blue);
  border: var(--border-width) solid var(--color-blue);
}

.btn-outline:hover {
  background-color: var(--color-light-grey);
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-lg);
  width: 100%;
}

button:disabled,
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========================================
   Result & Output Cards
   ========================================*/

.result-card {
  background: linear-gradient(135deg, var(--color-light-grey) 0%, var(--color-white) 100%);
  border: var(--border-width) solid var(--color-grey-200);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-md) 0;
  border-bottom: var(--border-width) solid var(--color-grey-100);
}

.result-row:last-child {
  border-bottom: none;
}

.result-label {
  font-size: var(--font-size-sm);
  color: var(--color-grey-600);
  font-weight: 500;
}

.result-value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-navy);
}

.result-highlight {
  background-color: #fef3c7;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border-left: 4px solid var(--color-warning);
  margin-top: var(--spacing-lg);
}

.result-highlight-title {
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--spacing-sm);
}

.result-highlight-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-navy);
}

/* ========================================
   Status Indicators
   ========================================*/

.status {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.status::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-success {
  background-color: #dcfce7;
  color: var(--color-success);
}

.status-success::before {
  background-color: var(--color-success);
}

.status-error {
  background-color: #fee2e2;
  color: var(--color-error);
}

.status-error::before {
  background-color: var(--color-error);
}

.status-warning {
  background-color: #fef3c7;
  color: #92400e;
}

.status-warning::before {
  background-color: var(--color-warning);
}

.status-info {
  background-color: #dbeafe;
  color: var(--color-info);
}

.status-info::before {
  background-color: var(--color-info);
}

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

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-left {
  text-align: left;
}

.text-muted {
  color: var(--color-grey-600);
}

.text-navy {
  color: var(--color-navy);
}

.text-blue {
  color: var(--color-blue);
}

.text-small {
  font-size: var(--font-size-sm);
}

.text-large {
  font-size: var(--font-size-lg);
}

.font-bold {
  font-weight: 700;
}

.font-semibold {
  font-weight: 600;
}

.font-normal {
  font-weight: 400;
}

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }

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

.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.overflow-hidden {
  overflow: hidden;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-through {
  text-decoration: line-through;
}

.opacity-50 {
  opacity: 0.5;
}

.opacity-75 {
  opacity: 0.75;
}

.border {
  border: var(--border-width) solid var(--color-grey-300);
}

.border-top {
  border-top: var(--border-width) solid var(--color-grey-300);
}

.border-bottom {
  border-bottom: var(--border-width) solid var(--color-grey-300);
}

.rounded {
  border-radius: var(--border-radius-md);
}

.rounded-lg {
  border-radius: var(--border-radius-lg);
}

.rounded-xl {
  border-radius: var(--border-radius-xl);
}

.shadow {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

/* ========================================
   Coming Soon / Zone Placeholder
   ========================================*/

.zone-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 500px;
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-light-grey) 0%, var(--color-white) 100%);
  border-radius: var(--border-radius-xl);
  margin: var(--spacing-2xl) 0;
}

.zone-placeholder-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.zone-placeholder-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--spacing-md);
}

.zone-placeholder-text {
  font-size: var(--font-size-base);
  color: var(--color-grey-600);
  max-width: 400px;
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   Toast Notifications
   ========================================*/

.toast-container {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 400px;
}

.toast {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  animation: slideIn 300ms ease-out;
  min-width: 300px;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(400px);
    opacity: 0;
  }
}

.toast.remove {
  animation: slideOut 300ms ease-out forwards;
}

.toast-success {
  background-color: #dcfce7;
  color: var(--color-success);
  border: var(--border-width) solid #bbf7d0;
}

.toast-error {
  background-color: #fee2e2;
  color: var(--color-error);
  border: var(--border-width) solid #fecaca;
}

.toast-info {
  background-color: #dbeafe;
  color: var(--color-info);
  border: var(--border-width) solid #bfdbfe;
}

.toast-warning {
  background-color: #fef3c7;
  color: #92400e;
  border: var(--border-width) solid #fcd34d;
}

.toast-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-lg);
  color: currentColor;
  opacity: 0.7;
  transition: opacity var(--transition-base);
  padding: 0;
  margin-left: auto;
}

.toast-close:hover {
  opacity: 1;
}

/* ========================================
   Responsive Design - Tablet & Desktop
   ========================================*/

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-2xl);
  }

  .section {
    padding: var(--spacing-4xl) var(--spacing-2xl);
  }

  .app-layout {
    padding: var(--spacing-3xl) var(--spacing-2xl);
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }

  .input-group {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  }

  .footer-content {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .toast-container {
    max-width: 500px;
    min-width: 350px;
  }
}

/* ========================================
   Print Styles
   ========================================*/

@media print {
  #header,
  #footer,
  .toast-container,
  .no-print {
    display: none !important;
  }

  body {
    background-color: white;
  }

  .app-card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}