/**
 * BookClub Design System
 * Comprehensive styling system for all pages
 */

/* ==================== COLOR PALETTE ==================== */
:root {
  /* AfriNovel palette sampled from the active admin dashboard theme. */
  --brand-ink: #172a3a;
  --brand-ink-soft: #536575;
  --brand-paper: #f5f2ec;
  --brand-card: #fffdf9;
  --brand-line: #e4ded4;
  --brand-green: #2f6f5e;
  --brand-green-soft: #e4f0ea;
  --brand-coral: #c56d4e;
  --brand-gold: #b58b3b;
  --brand-info: #477c91;

  /* Backgrounds */
  --color-bg-primary: var(--brand-paper);
  --color-bg-secondary: var(--brand-card);
  --color-bg-tertiary: var(--brand-green-soft);
  --color-bg-card: var(--brand-card);
  --color-bg-dark: var(--brand-ink);
  
  /* Text Colors */
  --color-text-primary: var(--brand-ink);
  --color-text-secondary: var(--brand-ink-soft);
  --color-text-muted: #87938f;
  --color-text-inverse: #fffdf9;
  --color-text-accent: var(--brand-green);
  
  /* Semantic colors used by forms, buttons, states, and links. */
  --color-accent: var(--brand-green);
  --color-accent-dark: var(--brand-ink);
  --color-accent-light: var(--brand-green-soft);
  --color-success: var(--brand-green);
  --color-success-light: var(--brand-green-soft);
  --color-danger: var(--brand-coral);
  --color-danger-light: #f7e2da;
  --color-warning: var(--brand-gold);
  --color-warning-light: #f8efd9;
  --color-info: var(--brand-info);
  --color-info-light: #e4edf0;
  
  /* Novel-specific Colors */
  --color-ongoing: var(--brand-green);
  --color-completed: var(--brand-info);
  --color-hiatus: var(--brand-gold);
  --color-free: var(--brand-green);
  --color-locked: var(--brand-coral);
  --color-rating: var(--brand-gold);
  
  /* Borders & Lines */
  --color-border: var(--brand-line);
  --color-border-light: rgba(23, 42, 58, 0.06);
  --color-border-dark: #c8d9d1;
  
  /* Interactive */
  --color-link: var(--brand-green);
  --color-link-hover: var(--brand-ink);
  --color-link-visited: var(--brand-green);
  
  /* ==================== TYPOGRAPHY ==================== */
  --font-family-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-serif: "Merriweather", "Georgia", "Garamond", serif;
  --font-family-mono: "JetBrains Mono", "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Menlo, Courier, monospace;
  
  /* Wuxiaworld-inspired typography scale */
  --font-size-xs: 0.7rem;
  --font-size-sm: 0.8rem;
  --font-size-base: 0.9rem;
  --font-size-lg: 1rem;
  --font-size-xl: 1.1rem;
  --font-size-2xl: 1.25rem;
  --font-size-3xl: 1.5rem;
  --font-size-4xl: 1.75rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* ==================== SPACING ==================== */
  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-7: 1.75rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  
  /* ==================== SIZING ==================== */
  --size-xs: 20rem;
  --size-sm: 24rem;
  --size-md: 28rem;
  --size-lg: 32rem;
  --size-xl: 36rem;
  --size-2xl: 42rem;
  --size-3xl: 48rem;
  --size-4xl: 56rem;
  --size-5xl: 64rem;
  --size-6xl: 72rem;
  
  /* Wuxiaworld-inspired specific dimensions */
  --container-width: 1200px;
  --book-card-width: 130px;
  --book-cover-ratio: 2/3;
  --button-height: 44px;
  --input-height: 44px;
  
  /* ==================== BORDERS & RADIUS ==================== */
  --border-width-thin: 1px;
  --border-width-default: 1px;
  --border-width-thick: 2px;
  
  --border-radius-none: 0;
  --border-radius-sm: 0.25rem;
  --border-radius-base: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;
  --border-radius-full: 9999px;
  
  /* ==================== SHADOWS ==================== */
  --shadow-none: none;
  --shadow-sm: 0 1px 2px rgba(23, 42, 58, 0.04);
  --shadow-base: 0 2px 6px rgba(23, 42, 58, 0.06);
  --shadow-md: 0 4px 12px rgba(23, 42, 58, 0.07);
  --shadow-lg: 0 8px 20px rgba(23, 42, 58, 0.08);
  --shadow-xl: 0 12px 30px rgba(23, 42, 58, 0.08);
  --shadow-2xl: 0 18px 38px rgba(23, 42, 58, 0.12);
  
  /* ==================== TRANSITIONS ==================== */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* ==================== Z-INDEX ==================== */
  --z-hide: -1;
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 50;
  --z-fixed: 100;
  --z-modal-backdrop: 1000;
  --z-modal: 1010;
  --z-tooltip: 1020;
  --z-notification: 1030;
}

/* ==================== RESET & NORMALIZE ==================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
}

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-4);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.5px;
}

h2 {
  font-size: var(--font-size-3xl);
  letter-spacing: -0.3px;
}

h3 {
  font-size: var(--font-size-2xl);
  letter-spacing: -0.2px;
}

h4 {
  font-size: var(--font-size-xl);
  letter-spacing: -0.1px;
}

h5, h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-relaxed);
}

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

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

a:visited {
  color: var(--color-link-visited);
}

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

strong {
  font-weight: var(--font-weight-bold);
}

em {
  font-style: italic;
}

/* ==================== BUTTONS ==================== */
button,
.button,
input[type="submit"],
input[type="reset"],
input[type="button"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  height: var(--button-height);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  border: var(--border-width-default) solid transparent;
  border-radius: 4px;
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  user-select: none;
  -webkit-user-select: none;
}

button:hover,
.button:hover,
input[type="submit"]:hover,
input[type="reset"]:hover,
input[type="button"]:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

button:active,
.button:active,
input[type="submit"]:active,
input[type="reset"]:active,
input[type="button"]:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

button:disabled,
.button:disabled,
input[type="submit"]:disabled,
input[type="reset"]:disabled,
input[type="button"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button:focus-visible,
.button:focus-visible,
input[type="submit"]:focus-visible,
input[type="reset"]:focus-visible,
input[type="button"]:focus-visible {
  outline: 3px solid var(--color-accent-light);
  outline-offset: 2px;
}

/* Button Variants */
.button-secondary,
button.secondary,
input[type="submit"].secondary {
  background-color: var(--color-text-secondary);
  color: var(--color-text-inverse);
}

.button-secondary:hover,
button.secondary:hover,
input[type="submit"].secondary:hover {
  background-color: var(--color-text-primary);
}

.button-success,
button.success {
  background-color: var(--color-success);
}

.button-success:hover,
button.success:hover {
  background-color: var(--color-accent-dark);
}

.button-danger,
button.danger {
  background-color: var(--color-danger);
}

.button-danger:hover,
button.danger:hover {
  background-color: var(--color-accent-dark);
}

.button-outline {
  background-color: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.button-outline:hover {
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
}

.button-outline:active {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.button-link {
  background-color: transparent;
  color: var(--color-link);
  padding: 0;
  text-decoration: underline;
}

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

.button-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-xs);
  height: 36px;
}

.button-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-base);
  height: 52px;
}

/* ==================== FORMS ==================== */
form {
  margin-bottom: var(--spacing-8);
}

fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

legend {
  display: block;
  width: 100%;
  padding: 0;
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  line-height: inherit;
  color: inherit;
  border: 0;
}

.form-group,
.field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-6);
}

label {
  display: block;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  user-select: none;
}

label .required {
  color: var(--color-danger);
  margin-left: 2px;
}

input,
textarea,
select {
  width: 100%;
  height: var(--input-height);
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  border: var(--border-width-default) solid var(--color-border);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: var(--color-bg-tertiary);
  box-shadow: 0 0 0 3px rgba(216, 155, 53, 0.1);
}

input:disabled,
textarea:disabled,
select:disabled {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  cursor: not-allowed;
  opacity: 0.5;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--font-family-base);
}

select {
  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='%23a9afbb' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-3) center;
  padding-right: var(--spacing-10);
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  height: auto;
  margin-right: var(--spacing-2);
  cursor: pointer;
  accent-color: var(--color-accent);
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.form-check label {
  margin: 0;
  font-weight: var(--font-weight-normal);
  cursor: pointer;
}

.form-help,
.helptext {
  display: block;
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.form-error,
.errorlist {
  list-style: none;
  padding: 0;
  margin: var(--spacing-2) 0 0;
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

.form-error li,
.errorlist li {
  padding: var(--spacing-2);
  background-color: var(--color-danger-light);
  border-left: 3px solid var(--color-danger);
  margin-bottom: var(--spacing-2);
  border-radius: var(--border-radius-md);
}

input.error,
textarea.error,
select.error {
  border-color: var(--color-danger);
}

input.error:focus,
textarea.error:focus,
select.error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ==================== MESSAGES & ALERTS ==================== */
.messages {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-8);
}

.message,
.alert {
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  border-left: 4px solid var(--color-info);
  border-radius: var(--border-radius-md);
  background-color: var(--color-info-light);
  color: var(--color-text-primary);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
}

.message.success,
.alert.success {
  border-left-color: var(--color-success);
  background-color: var(--color-success-light);
}

.message.error,
.alert.error {
  border-left-color: var(--color-danger);
  background-color: var(--color-danger-light);
}

.message.warning,
.alert.warning {
  border-left-color: var(--color-warning);
  background-color: var(--color-warning-light);
}

.message.debug,
.alert.debug {
  border-left-color: var(--color-text-muted);
  background-color: var(--color-bg-tertiary);
}

.message-icon {
  flex: 0 0 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.message-content {
  flex: 1;
}

.message-close {
  flex: 0 0 24px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

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

/* ==================== TABLES ==================== */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-8);
  background-color: var(--color-bg-tertiary);
  border: var(--border-width-default) solid var(--color-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

thead {
  background-color: var(--color-bg-secondary);
  border-bottom: var(--border-width-thick) solid var(--color-border);
}

th {
  padding: var(--spacing-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  padding: var(--spacing-4);
  border-bottom: var(--border-width-default) solid var(--color-border-light);
  font-size: var(--font-size-sm);
}

tbody tr:hover {
  background-color: var(--color-bg-secondary);
}

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

/* ==================== CARDS & CONTAINERS ==================== */
.card {
  background-color: var(--color-bg-card);
  border: var(--border-width-default) solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
  padding-bottom: var(--spacing-4);
  border-bottom: var(--border-width-default) solid var(--color-border);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.card-body {
  margin-bottom: var(--spacing-4);
}

.card-body:last-child {
  margin-bottom: 0;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-4);
  border-top: var(--border-width-default) solid var(--color-border);
  gap: var(--spacing-4);
}

.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--spacing-6);
  padding-left: var(--spacing-6);
  max-width: var(--container-width);
}

@media (min-width: 576px) {
  .container {
    max-width: var(--container-width);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-width);
  }
}

@media (min-width: 992px) {
  .container {
    max-width: var(--container-width);
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: var(--container-width);
  }
}

@media (min-width: 1400px) {
  .container {
    max-width: var(--container-width);
  }
}

/* ==================== UTILITIES ==================== */
.text-center {
  text-align: center;
}

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

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

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

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

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

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

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

.font-bold {
  font-weight: var(--font-weight-bold);
}

.font-semibold {
  font-weight: var(--font-weight-semibold);
}

.font-medium {
  font-weight: var(--font-weight-medium);
}

.ml-auto {
  margin-left: auto;
}

.mr-auto {
  margin-right: auto;
}

.mt-auto {
  margin-top: auto;
}

.mb-auto {
  margin-bottom: auto;
}

.d-none {
  display: none !important;
}

.d-block {
  display: block;
}

.d-flex {
  display: flex;
}

.d-grid {
  display: grid;
}

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

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

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

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

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  h1 {
    font-size: var(--font-size-2xl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }

  h3 {
    font-size: var(--font-size-lg);
  }

  .container {
    padding-right: var(--spacing-4);
    padding-left: var(--spacing-4);
  }

  /* Mobile-specific adjustments */
  .button-lg {
    min-height: 48px; /* Touch-friendly */
    font-size: var(--font-size-base);
  }

  /* Better touch targets on mobile */
  button,
  .button,
  input[type="submit"],
  input[type="reset"],
  input[type="button"] {
    min-height: 44px;
  }

  /* Mobile book card adjustment */
  :root {
    --book-card-width: 110px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==================== PRINT ==================== */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  img {
    max-width: 100% !important;
  }
}