/* Author42 Platform Design Tokens & Base Styles */
/* Version 1.0 — shared across all Author42 platform apps */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  /* Brand colors */
  --a42-teal: #09C9B7;
  --a42-teal-dark: #07a89a;
  --a42-dark-blue: #1a3a5c;
  --a42-dark-blue-dark: #13283f;
  --a42-orange: #fb7818;
  --a42-orange-dark: #e06a12;

  /* Surfaces */
  --a42-bg: #f6f4ef;
  --a42-bg-white: #ffffff;
  --a42-bg-light-grey: #f0f4f7;
  --a42-bg-light-blue: #f0f5f3;
  --a42-bg-light-orange: #ffe2c7;
  --a42-bg-light-teal: #cfebeb;

  /* Text */
  --a42-text: #000000;
  --a42-text-muted: #7f7e7e;
  --a42-text-nav: #0b4866;

  /* Typography */
  --a42-font-ui: 'Inter', system-ui, sans-serif;
  --a42-font-heading: 'Playfair Display', serif;

  /* Spacing */
  --a42-space-xs: 4px;
  --a42-space-sm: 8px;
  --a42-space-md: 16px;
  --a42-space-lg: 24px;
  --a42-space-xl: 32px;
  --a42-space-2xl: 48px;

  /* Borders */
  --a42-radius: 6px;
  --a42-radius-lg: 8px;
  --a42-border: #cfebeb;
  --a42-border-input: #d1d5db;

  /* Shadows */
  --a42-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --a42-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --a42-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);

  /* Status */
  --a42-success: #0f766e;
  --a42-success-bg: #f0fdfa;
  --a42-error: #b91c1c;
  --a42-error-bg: #fef2f2;
  --a42-warning: #92400e;
  --a42-warning-bg: #fffbeb;
}

/* ------------------------------------------------------------------ */
/* Layout coordination                                                 */
/* ------------------------------------------------------------------ */

body.a42-has-nav {
  padding-top: 56px;
}

body.a42-has-sidebar main,
body.a42-has-sidebar .a42-main {
  margin-left: 240px;
  transition: margin-left 0.2s ease;
}

@media (max-width: 1023px) {
  body.a42-has-sidebar main,
  body.a42-has-sidebar .a42-main {
    margin-left: 48px;
  }
}

@media (max-width: 767px) {
  body.a42-has-sidebar main,
  body.a42-has-sidebar .a42-main {
    margin-left: 0;
  }
}

/* ------------------------------------------------------------------ */
/* Base reset (scoped to a42 classes)                                   */
/* ------------------------------------------------------------------ */

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--a42-font-ui);
  color: var(--a42-text);
  background: var(--a42-bg);
  margin: 0;
  padding: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ------------------------------------------------------------------ */
/* Typography utilities                                                */
/* ------------------------------------------------------------------ */

.a42-text-heading {
  font-family: var(--a42-font-heading);
}

.a42-text-ui {
  font-family: var(--a42-font-ui);
}

.a42-text-muted {
  color: var(--a42-text-muted);
}

.a42-text-dark-blue {
  color: var(--a42-dark-blue);
}

.a42-text-teal {
  color: var(--a42-teal);
}

.a42-text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.a42-text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}

.a42-text-lg {
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.a42-text-xl {
  font-size: 1.25rem;
  line-height: 1.75rem;
}

.a42-text-2xl {
  font-size: 1.5rem;
  line-height: 2rem;
}

.a42-text-3xl {
  font-size: 1.875rem;
  line-height: 2.25rem;
}

.a42-font-medium {
  font-weight: 500;
}

.a42-font-semibold {
  font-weight: 600;
}

.a42-font-bold {
  font-weight: 700;
}

.a42-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ------------------------------------------------------------------ */
/* Layout utilities                                                    */
/* ------------------------------------------------------------------ */

.a42-container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--a42-space-md);
  padding-right: var(--a42-space-md);
}

.a42-container-narrow {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--a42-space-md);
  padding-right: var(--a42-space-md);
}

.a42-flex {
  display: flex;
}

.a42-flex-col {
  display: flex;
  flex-direction: column;
}

.a42-flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.a42-flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.a42-items-center {
  align-items: center;
}

.a42-justify-between {
  justify-content: space-between;
}

.a42-gap-xs { gap: var(--a42-space-xs); }
.a42-gap-sm { gap: var(--a42-space-sm); }
.a42-gap-md { gap: var(--a42-space-md); }
.a42-gap-lg { gap: var(--a42-space-lg); }
.a42-gap-xl { gap: var(--a42-space-xl); }

.a42-grid {
  display: grid;
}

.a42-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--a42-space-md);
}

.a42-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--a42-space-md);
}

.a42-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--a42-space-md);
}

@media (max-width: 767px) {
  .a42-grid-2,
  .a42-grid-3,
  .a42-grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .a42-grid-3,
  .a42-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ------------------------------------------------------------------ */
/* Spacing utilities                                                   */
/* ------------------------------------------------------------------ */

.a42-p-xs { padding: var(--a42-space-xs); }
.a42-p-sm { padding: var(--a42-space-sm); }
.a42-p-md { padding: var(--a42-space-md); }
.a42-p-lg { padding: var(--a42-space-lg); }
.a42-p-xl { padding: var(--a42-space-xl); }

.a42-px-md { padding-left: var(--a42-space-md); padding-right: var(--a42-space-md); }
.a42-py-md { padding-top: var(--a42-space-md); padding-bottom: var(--a42-space-md); }
.a42-px-lg { padding-left: var(--a42-space-lg); padding-right: var(--a42-space-lg); }
.a42-py-lg { padding-top: var(--a42-space-lg); padding-bottom: var(--a42-space-lg); }

.a42-m-0 { margin: 0; }
.a42-mt-sm { margin-top: var(--a42-space-sm); }
.a42-mt-md { margin-top: var(--a42-space-md); }
.a42-mt-lg { margin-top: var(--a42-space-lg); }
.a42-mt-xl { margin-top: var(--a42-space-xl); }
.a42-mb-sm { margin-bottom: var(--a42-space-sm); }
.a42-mb-md { margin-bottom: var(--a42-space-md); }
.a42-mb-lg { margin-bottom: var(--a42-space-lg); }

/* ------------------------------------------------------------------ */
/* Buttons                                                             */
/* ------------------------------------------------------------------ */

.a42-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--a42-space-sm);
  padding: 10px 16px;
  border-radius: var(--a42-radius);
  font-family: var(--a42-font-ui);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.a42-btn:focus-visible {
  outline: 2px solid var(--a42-teal);
  outline-offset: 2px;
}

.a42-btn:disabled,
.a42-btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary — teal */
.a42-btn-primary {
  background-color: var(--a42-teal);
  color: #ffffff;
  border-color: var(--a42-teal);
  box-shadow: var(--a42-shadow-sm);
}

.a42-btn-primary:hover {
  background-color: var(--a42-teal-dark);
  border-color: var(--a42-teal-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.a42-btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--a42-shadow-sm);
}

/* Secondary — outlined */
.a42-btn-secondary {
  background-color: var(--a42-bg-light-grey);
  color: var(--a42-dark-blue);
  border-color: var(--a42-border);
  box-shadow: var(--a42-shadow-sm);
}

.a42-btn-secondary:hover {
  background-color: var(--a42-bg-light-teal);
  border-color: var(--a42-teal);
}

.a42-btn-secondary:active {
  background-color: var(--a42-bg-light-blue);
}

/* Accent — orange */
.a42-btn-accent {
  background-color: var(--a42-orange);
  color: #ffffff;
  border-color: var(--a42-orange);
  box-shadow: var(--a42-shadow-sm);
}

.a42-btn-accent:hover {
  background-color: var(--a42-orange-dark);
  border-color: var(--a42-orange-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.a42-btn-accent:active {
  transform: translateY(0);
  box-shadow: var(--a42-shadow-sm);
}

/* Ghost — no background */
.a42-btn-ghost {
  background-color: transparent;
  color: var(--a42-text);
  border-color: transparent;
}

.a42-btn-ghost:hover {
  background-color: var(--a42-bg-light-grey);
}

.a42-btn-ghost:active {
  background-color: var(--a42-bg-light-teal);
}

/* Button sizes */
.a42-btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
}

.a42-btn-lg {
  padding: 12px 24px;
  font-size: 1rem;
}

.a42-btn-icon {
  padding: 8px;
  width: 36px;
  height: 36px;
}

/* ------------------------------------------------------------------ */
/* Inputs                                                              */
/* ------------------------------------------------------------------ */

.a42-input {
  display: block;
  width: 100%;
  padding: 10px 12px;
  font-family: var(--a42-font-ui);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--a42-text);
  background-color: var(--a42-bg-white);
  border: 1px solid var(--a42-border-input);
  border-radius: var(--a42-radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}

.a42-input::placeholder {
  color: var(--a42-text-muted);
}

.a42-input:focus {
  border-color: var(--a42-teal);
  box-shadow: 0 0 0 2px rgba(59, 134, 134, 0.15);
}

.a42-input:disabled {
  background-color: var(--a42-bg-light-grey);
  cursor: not-allowed;
  opacity: 0.6;
}

.a42-input-error {
  border-color: var(--a42-error);
}

.a42-input-error:focus {
  box-shadow: 0 0 0 2px rgba(185, 28, 28, 0.15);
}

.a42-textarea {
  display: block;
  width: 100%;
  padding: 10px 12px;
  font-family: var(--a42-font-ui);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--a42-text);
  background-color: var(--a42-bg-white);
  border: 1px solid var(--a42-border-input);
  border-radius: var(--a42-radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
  resize: vertical;
  min-height: 80px;
}

.a42-textarea:focus {
  border-color: var(--a42-teal);
  box-shadow: 0 0 0 2px rgba(59, 134, 134, 0.15);
}

.a42-select {
  display: block;
  width: 100%;
  padding: 10px 32px 10px 12px;
  font-family: var(--a42-font-ui);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--a42-text);
  background-color: var(--a42-bg-white);
  border: 1px solid var(--a42-border-input);
  border-radius: var(--a42-radius);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237f7e7e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.a42-select:focus {
  border-color: var(--a42-teal);
  box-shadow: 0 0 0 2px rgba(59, 134, 134, 0.15);
}

.a42-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--a42-text);
  margin-bottom: var(--a42-space-xs);
}

.a42-helper {
  font-size: 0.75rem;
  color: var(--a42-text-muted);
  margin-top: var(--a42-space-xs);
}

.a42-error-text {
  font-size: 0.75rem;
  color: var(--a42-error);
  margin-top: var(--a42-space-xs);
}

/* ------------------------------------------------------------------ */
/* Cards                                                               */
/* ------------------------------------------------------------------ */

.a42-card {
  background-color: var(--a42-bg-white);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--a42-radius-lg);
  padding: var(--a42-space-lg);
  box-shadow: var(--a42-shadow-sm);
}

.a42-card-hover:hover {
  border-color: rgba(59, 134, 134, 0.5);
  box-shadow: var(--a42-shadow);
  transition: all 0.15s ease;
}

.a42-card-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--a42-radius-lg);
  padding: var(--a42-space-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.a42-card-header {
  margin-bottom: var(--a42-space-md);
  padding-bottom: var(--a42-space-md);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.a42-card-footer {
  margin-top: var(--a42-space-md);
  padding-top: var(--a42-space-md);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

/* ------------------------------------------------------------------ */
/* Badges                                                              */
/* ------------------------------------------------------------------ */

.a42-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-family: var(--a42-font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.5;
  border-radius: 999px;
  white-space: nowrap;
}

.a42-badge-default {
  background-color: var(--a42-bg-light-grey);
  color: var(--a42-text);
}

.a42-badge-teal {
  background-color: var(--a42-bg-light-teal);
  color: var(--a42-teal);
}

.a42-badge-blue {
  background-color: #e0f2fe;
  color: var(--a42-dark-blue);
}

.a42-badge-orange {
  background-color: var(--a42-bg-light-orange);
  color: var(--a42-orange);
}

.a42-badge-success {
  background-color: var(--a42-success-bg);
  color: var(--a42-success);
}

.a42-badge-error {
  background-color: var(--a42-error-bg);
  color: var(--a42-error);
}

.a42-badge-warning {
  background-color: var(--a42-warning-bg);
  color: var(--a42-warning);
}

/* ------------------------------------------------------------------ */
/* Tags / Chips                                                        */
/* ------------------------------------------------------------------ */

.a42-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  font-family: var(--a42-font-ui);
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid var(--a42-border-input);
  background-color: var(--a42-bg-white);
  color: var(--a42-text);
  cursor: pointer;
  transition: all 0.15s ease;
}

.a42-tag:hover {
  border-color: var(--a42-teal);
  background-color: var(--a42-bg-light-teal);
}

.a42-tag-selected {
  background-color: #98caca;
  border-color: var(--a42-teal);
  color: var(--a42-text);
}

/* ------------------------------------------------------------------ */
/* Dividers                                                            */
/* ------------------------------------------------------------------ */

.a42-divider {
  height: 1px;
  background-color: rgba(0, 0, 0, 0.08);
  border: none;
  margin: var(--a42-space-md) 0;
}

/* ------------------------------------------------------------------ */
/* Visibility utilities                                                */
/* ------------------------------------------------------------------ */

.a42-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.a42-hidden {
  display: none !important;
}

@media (max-width: 767px) {
  .a42-hide-mobile { display: none !important; }
}

@media (min-width: 768px) {
  .a42-hide-desktop { display: none !important; }
}