/* ========== SRUI DARK THEME - BOOK DETAIL (Enhanced Mobile) ========== */
:root {
  --srui-accent: #ffce00;
  --srui-background: #1B1C1E;
  --srui-card: #0f0f0f;
  --srui-text: #ffffff;
  --srui-accent-text: #000000;
  --srui-border: #4B4F50;
  --srui-text-secondary: #999999;
  --srui-text-tertiary: #666666;
  --srui-success: #4CAF50;
  --srui-warning: #ffce00;
  --srui-error: #F44336;
  --srui-info: #2196F3;
  --srui-font-primary: 'Outfit', 'Arial', sans-serif;
  --srui-font-mono: 'Courier New', monospace;
  --srui-font-weight-regular: 400;
  --srui-font-weight-medium: 500;
  --srui-font-weight-bold: 700;
  --srui-radius-sm: 12px;
  --srui-radius-md: 15px;
  --srui-radius-lg: 25px;
  --srui-radius-pill: 9999px;
  --srui-space-1: 0.25rem;
  --srui-space-2: 0.5rem;
  --srui-space-3: 0.75rem;
  --srui-space-4: 1rem;
  --srui-space-6: 1.5rem;
  --srui-space-8: 2rem;
  --srui-space-12: 3rem;
  --srui-shadow-card: 0 2px 8px rgba(0,0,0,0.4);
  --srui-shadow-raised: 0 4px 12px rgba(0,0,0,0.5);
  --srui-duration-fast: 0.1s;
  --srui-duration-normal: 0.3s;
  --srui-easing-press: ease-out;
  --srui-easing-smooth: ease-in-out;
  --srui-z-dropdown: 100;
  --srui-z-sticky: 200;
  --srui-z-modal: 300;
  --srui-z-toast: 400;
  --srui-hover-scale: 0.96;
  --srui-active-scale: 0.92;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
* {
  -webkit-tap-highlight-color: transparent;
}
html {
  font-size: 100%;
  scroll-behavior: smooth;
}
body {
  background-color: var(--srui-background);
  color: var(--srui-text);
  font-family: var(--srui-font-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding: var(--srui-space-3);
}
img, svg {
  display: block;
  max-width: 100%;
}
:focus-visible {
  outline: 2px solid var(--srui-accent);
  outline-offset: 2px;
  transition: outline-offset 0.1s ease-out;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@font-face {
  font-family: 'Outfit';
  src: url('https://cdn.jsdelivr.net/gh/Allwaysever/SuperRoundedUI/fonts/Outfit-Regular.ttf') format('truetype');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Outfit';
  src: url('https://cdn.jsdelivr.net/gh/Allwaysever/SuperRoundedUI/fonts/Outfit-Medium.ttf') format('truetype');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'Outfit';
  src: url('https://cdn.jsdelivr.net/gh/Allwaysever/SuperRoundedUI/fonts/Outfit-Bold.ttf') format('truetype');
  font-weight: 700;
  font-display: swap;
}

/* SRUI Utility Classes */
.srui-card {
  background-color: var(--srui-card);
  border-radius: var(--srui-radius-md);
  padding: var(--srui-space-4);
  box-shadow: var(--srui-shadow-card);
}
.srui-glass {
  background-color: rgba(27, 28, 30, 0.9);
  backdrop-filter: blur(8px);
  border-radius: var(--srui-radius-lg);
  box-shadow: var(--srui-shadow-raised);
}
.srui-chip {
  display: inline-flex;
  align-items: center;
  padding: var(--srui-space-1) var(--srui-space-3);
  border-radius: var(--srui-radius-pill);
  background-color: var(--srui-card);
  color: var(--srui-text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  gap: var(--srui-space-2);
}
.srui-chip--accent { background-color: var(--srui-accent); color: var(--srui-accent-text); }
.srui-chip--success { background-color: var(--srui-success); color: white; }
.srui-chip--info { background-color: var(--srui-info); color: white; }
.srui-chip--error { background-color: var(--srui-error); color: white; }
.srui-text-secondary { color: var(--srui-text-secondary); font-size: 0.875rem; }
.srui-text-tertiary { color: var(--srui-text-tertiary); font-size: 0.75rem; }
.srui-text-center { text-align: center; }

/* Pressed Micro-Bounce Effect */
.srui-pressed {
  transition: transform var(--srui-duration-fast) var(--srui-easing-press);
  will-change: transform;
  cursor: pointer;
}
.srui-pressed:hover {
  transform: scale(var(--srui-hover-scale));
}
.srui-pressed:active {
  transform: scale(var(--srui-active-scale));
}
.srui-pressed:disabled,
.srui-pressed[aria-disabled="true"],
.srui-pressed.srui-btn--disabled {
  opacity: 0.5;
  pointer-events: none;
  transform: none;
}

.srui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--srui-space-2);
  padding: var(--srui-space-3) var(--srui-space-6);
  border-radius: var(--srui-radius-lg);
  font-weight: 700;
  text-decoration: none;
  border: none;
  min-height: 48px;
}
.srui-btn--primary { background-color: var(--srui-accent); color: var(--srui-accent-text); }
.srui-btn--secondary { background: transparent; border: 2px solid var(--srui-border); color: var(--srui-text); }
.srui-btn--disabled { opacity: 0.5; pointer-events: none; }

/* ===== DETAIL PAGE ===== */
.srui-detail-container {
  max-width: 1200px;
  margin: 0 auto;
  background: var(--srui-card);
  border-radius: var(--srui-radius-lg);
  padding: var(--srui-space-4);
  box-shadow: var(--srui-shadow-raised);
}
.srui-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--srui-space-4);
  padding-bottom: var(--srui-space-3);
  border-bottom: 2px solid rgba(255,255,255,0.1);
  flex-wrap: wrap;
}
.srui-back-button {
  padding: var(--srui-space-2) var(--srui-space-4);
  background: var(--srui-background);
  color: var(--srui-text);
  border-radius: var(--srui-radius-lg);
  text-decoration: none;
  border: 2px solid var(--srui-border);
  display: inline-flex;
  align-items: center;
  gap: var(--srui-space-2);
  font-weight: 500;
  min-height: 44px;
}
.srui-book-detail-content {
  display: flex;
  flex-direction: column;
  gap: var(--srui-space-6);
}
@media (min-width: 768px) {
  .srui-book-detail-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--srui-space-8);
  }
}
.srui-cover-section {
  text-align: center;
}
.srui-cover-container {
  max-width: 260px;
  margin: 0 auto var(--srui-space-4);
}
.srui-book-cover {
  width: 100%;
  border-radius: var(--srui-radius-md);
  box-shadow: var(--srui-shadow-raised);
  aspect-ratio: 3/4;
  object-fit: cover;
}
.srui-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--srui-space-2);
  justify-content: center;
  margin-bottom: var(--srui-space-4);
}
.srui-cover-info {
  margin-top: var(--srui-space-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--srui-space-2);
  background: var(--srui-background);
  border-radius: var(--srui-radius-md);
  padding: var(--srui-space-3);
  text-align: left;
}
.srui-cover-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.srui-cover-info-label {
  font-size: 0.7rem;
  color: var(--srui-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.srui-cover-info-value {
  font-weight: 600;
  font-size: 0.85rem;
  word-break: break-word;
}
.srui-info-section h1 {
  font-size: 1.8rem;
  margin-bottom: var(--srui-space-2);
  color: var(--srui-accent);
  word-break: break-word;
}
.srui-book-author {
  font-size: 1.1rem;
  color: var(--srui-text-secondary);
  margin-bottom: var(--srui-space-4);
}
.srui-rating-section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--srui-space-3);
  margin: var(--srui-space-4) 0;
}
.srui-stars { color: var(--srui-accent); font-size: 1.2rem; }
.srui-price-section {
  background: var(--srui-background);
  padding: var(--srui-space-4);
  border-radius: var(--srui-radius-lg);
  margin: var(--srui-space-4) 0;
}
.srui-current-price { font-size: 2rem; font-weight: bold; color: var(--srui-accent); }
.srui-free-price { font-size: 1.8rem; font-weight: bold; color: var(--srui-success); }
.srui-metadata-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--srui-space-3);
  margin: var(--srui-space-5) 0;
}
.srui-meta-item {
  background: var(--srui-background);
  padding: var(--srui-space-3);
  border-radius: var(--srui-radius-md);
}
.srui-meta-label { display: block; color: var(--srui-text-secondary); font-size: 0.75rem; margin-bottom: 4px; }
.srui-meta-value { font-weight: bold; font-size: 0.9rem; }

.srui-action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--srui-space-3);
  margin: var(--srui-space-5) 0;
}
.srui-wishlist-btn {
  background: transparent;
  border: 2px solid var(--srui-border);
  border-radius: var(--srui-radius-pill);
  padding: 12px 20px;
  font-weight: 600;
  cursor: pointer;
  color: var(--srui-text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  transition: all 0.2s ease;
}
.srui-wishlist-btn.active { color: var(--srui-error); border-color: var(--srui-error); }
.srui-description-section,
.srui-features-section {
  margin: var(--srui-space-6) 0;
}
.srui-description-section h2,
.srui-features-section h2 {
  color: var(--srui-accent);
  margin-bottom: var(--srui-space-3);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: var(--srui-space-2);
}
.srui-description-content {
  font-size: 1rem;
  line-height: 1.6;
  background: var(--srui-background);
  padding: var(--srui-space-4);
  border-radius: var(--srui-radius-md);
}
.srui-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--srui-space-2);
  margin: var(--srui-space-3) 0;
}
.srui-tag {
  background: rgba(255,255,255,0.1);
  padding: 6px 14px;
  border-radius: var(--srui-radius-pill);
  font-size: 0.8rem;
}
.srui-features-list {
  list-style: none;
  background: var(--srui-background);
  border-radius: var(--srui-radius-md);
}
.srui-features-list li {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.srui-comments-section {
  margin-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--srui-space-6);
}
.srui-comments-section h2 {
  color: var(--srui-accent);
  margin-bottom: var(--srui-space-4);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: var(--srui-space-2);
}
.srui-comments-list {
  margin: var(--srui-space-4) 0;
}
.srui-comment-card {
  display: flex;
  gap: var(--srui-space-3);
  background: var(--srui-background);
  border-radius: var(--srui-radius-md);
  padding: var(--srui-space-4);
  margin-bottom: var(--srui-space-3);
  transition: transform 0.1s ease;
}
.srui-comment-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--srui-radius-pill);
  object-fit: cover;
  background: var(--srui-card);
  flex-shrink: 0;
}
.srui-comment-body {
  flex: 1;
}
.srui-comment-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--srui-space-2);
  margin-bottom: 4px;
}
.srui-comment-name {
  font-weight: bold;
  color: var(--srui-text);
}
.srui-comment-date {
  font-size: 0.7rem;
  color: var(--srui-text-tertiary);
}
.srui-comment-text {
  font-size: 0.95rem;
  line-height: 1.5;
  word-break: break-word;
  color: var(--srui-text-secondary);
}
.srui-comment-input-area {
  margin: var(--srui-space-5) 0 var(--srui-space-3);
}
.srui-comment-input-area textarea {
  width: 100%;
  background: var(--srui-card);
  border: 2px solid var(--srui-border);
  border-radius: var(--srui-radius-md);
  padding: 12px;
  color: var(--srui-text);
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 12px;
  resize: vertical;
}
.srui-comment-input-area textarea:focus {
  outline: none;
  border-color: var(--srui-accent);
}
.srui-login-prompt {
  text-align: center;
  padding: var(--srui-space-6);
  background: var(--srui-background);
  border-radius: var(--srui-radius-md);
  color: var(--srui-text-secondary);
}
.srui-book-footer {
  text-align: center;
  margin-top: var(--srui-space-8);
  padding-top: var(--srui-space-4);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
  color: var(--srui-text-tertiary);
}
.srui-loading-state, .srui-error-state {
  text-align: center;
  padding: 60px 20px;
}
.srui-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--srui-card);
  border-top-color: var(--srui-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--srui-space-4);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 640px) {
  body { padding: var(--srui-space-2); }
  .srui-detail-container { padding: var(--srui-space-3); }
  .srui-info-section h1 { font-size: 1.5rem; }
  .srui-current-price, .srui-free-price { font-size: 1.6rem; }
  .srui-btn, .srui-wishlist-btn { width: 100%; justify-content: center; }
  .srui-action-buttons { flex-direction: column; }
  .srui-metadata-grid { grid-template-columns: 1fr 1fr; }
  .srui-cover-info { grid-template-columns: 1fr 1fr; }
  .srui-comment-card { gap: var(--srui-space-2); }
  .srui-comment-avatar { width: 36px; height: 36px; }
}