/* =============================================
   Peco's Personal Website - Modern Shared Styles
   ============================================= */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #ff6b6b;
  --color-primary-dark: #e05555;
  --color-primary-light: #ff8e8e;
  --color-secondary: #4ecdc4;
  --color-accent: #ffe66d;
  --color-warm: #ff9f43;
  --color-bg: #faf3e0;
  --color-bg-alt: #fef9f0;
  --color-card: rgba(255, 255, 255, 0.82);
  --color-card-hover: rgba(255, 255, 255, 0.95);
  --color-text: #2d3436;
  --color-text-muted: #636e72;
  --color-text-light: #b2bec3;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.12);
  --color-shadow: rgba(0, 0, 0, 0.06);
  --color-shadow-strong: rgba(0, 0, 0, 0.12);
  --color-focus: rgba(255, 107, 107, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  --max-width: 720px;
  --page-padding: 20px;
  --bottom-bar-height: 60px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: linear-gradient(
    160deg,
    #faf3e0 0%,
    #fef0e5 30%,
    #f0e6ff 70%,
    #e8f4f8 100%
  );
  background-attachment: fixed;
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}
a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- Selection --- */
::selection {
  background: var(--color-primary);
  color: white;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary-light);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
  border: 2px solid transparent;
  background-clip: content-box;
}

/* =============================================
   ANIMATIONS
   ============================================= */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.06);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

@keyframes glow {
  0%,
  100% {
    box-shadow: 0 0 8px var(--color-focus);
  }
  50% {
    box-shadow: 0 0 20px var(--color-focus), 0 0 40px rgba(255, 107, 107, 0.1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* --- Fade-in utility --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  will-change: transform, opacity;
}

.fade-in-delay-1 {
  animation-delay: 0.1s;
}
.fade-in-delay-2 {
  animation-delay: 0.2s;
}
.fade-in-delay-3 {
  animation-delay: 0.35s;
}
.fade-in-delay-4 {
  animation-delay: 0.5s;
}
.fade-in-delay-5 {
  animation-delay: 0.65s;
}

/* --- Reveal via Intersection Observer --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, opacity;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Reduced Motion --- */
@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;
  }
  .fade-in {
    opacity: 1;
    transform: none;
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* =============================================
   COMPONENTS
   ============================================= */

/* --- Glass Card --- */
.glass-card {
  background: var(--color-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 24px var(--color-shadow);
  transition: transform var(--transition-normal),
    box-shadow var(--transition-normal), background var(--transition-normal);
  will-change: transform;
}
.glass-card:hover {
  background: var(--color-card-hover);
  box-shadow: 0 8px 40px var(--color-shadow-strong);
  transform: translateY(-3px);
}

/* --- Avatar --- */
.avatar-wrapper {
  display: inline-block;
  position: relative;
  border-radius: 50%;
  overflow: hidden;
  transition: transform var(--transition-spring),
    box-shadow var(--transition-normal);
  cursor: pointer;
  will-change: transform;
  flex-shrink: 0;
}
.avatar-wrapper::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.3);
  transition: border-color var(--transition-normal),
    box-shadow var(--transition-normal);
  pointer-events: none;
}
.avatar-wrapper:hover {
  transform: scale(1.08) rotate(-4deg);
  box-shadow: 0 8px 30px rgba(255, 107, 107, 0.2);
}
.avatar-wrapper:hover::after {
  border-color: var(--color-primary);
  box-shadow: 0 0 25px rgba(255, 107, 107, 0.25);
}
.avatar-wrapper:active {
  transform: scale(0.96);
}
.avatar-wrapper img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 50%;
}
.avatar-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 8px;
  opacity: 0.65;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}
.avatar-wrapper:hover + .avatar-hint {
  opacity: 1;
  color: var(--color-primary);
}

/* --- Section Container --- */
.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

/* --- Hero Section --- */
.hero-section {
  text-align: center;
  padding: 64px 20px 44px;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
      circle at 30% 50%,
      rgba(255, 107, 107, 0.07) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 50%,
      rgba(78, 205, 196, 0.07) 0%,
      transparent 50%
    );
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}
.hero-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 20px 0 10px;
  position: relative;
}
.hero-title span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-warm));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Quote List --- */
.quote-list {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding) 80px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.quote-item {
  padding: 16px 24px;
  background: var(--color-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  transition: transform var(--transition-normal),
    background var(--transition-normal), box-shadow var(--transition-normal),
    border-color var(--transition-normal);
  position: relative;
  overflow: hidden;
  will-change: transform;
}
.quote-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(
    180deg,
    var(--color-primary),
    var(--color-secondary)
  );
  opacity: 0;
  transition: opacity var(--transition-normal);
  border-radius: 0 2px 2px 0;
}
.quote-item:hover {
  transform: translateX(8px);
  background: var(--color-card-hover);
  box-shadow: 0 6px 24px var(--color-shadow);
  border-color: var(--color-border-strong);
}
.quote-item:hover::before {
  opacity: 1;
}
.quote-item:last-child {
  margin-bottom: 0;
}
.quote-note {
  font-size: 0.82rem;
  color: var(--color-text-light);
  text-align: center;
  margin-top: 10px;
}

/* --- Like Button --- */
.like-section {
  text-align: center;
  padding: 8px 20px 20px;
}
.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  background: linear-gradient(135deg, #fff5f5, #fff0f0);
  border: 1.5px solid rgba(255, 107, 107, 0.2);
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  transition: transform var(--transition-normal),
    background var(--transition-normal), color var(--transition-normal),
    border-color var(--transition-normal), box-shadow var(--transition-normal);
  font-family: var(--font-sans);
  box-shadow: 0 2px 12px rgba(255, 107, 107, 0.1);
  will-change: transform;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.like-btn:hover {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: white;
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
}
.like-btn:active {
  transform: scale(0.94);
}
.like-btn .like-icon {
  display: inline-block;
  transition: transform var(--transition-fast);
}
.like-btn:hover .like-icon {
  animation: pulse 0.8s ease-in-out infinite;
}
.like-count {
  font-variant-numeric: tabular-nums;
}

/* --- Bottom Bar --- */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-bar-height);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 999;
  padding: 0 20px;
  transition: background var(--transition-normal);
}
.bottom-bar p {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}
.bottom-bar a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 20px;
  transition: color var(--transition-fast), background var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
}
.bottom-bar a:hover {
  color: var(--color-primary);
  background: rgba(255, 107, 107, 0.08);
  transform: translateY(-1px);
}
.bottom-bar .divider {
  color: var(--color-border);
  font-size: 0.8rem;
  user-select: none;
}

/* --- Page Transition Overlay --- */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-warm));
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}
.page-transition.active {
  transform: translateY(0);
}

/* --- Badge --- */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.badge-admin {
  background: linear-gradient(135deg, var(--color-accent), #f0c040);
  color: #7a6200;
}

/* --- Loading Dots --- */
.loading-dots::after {
  content: "";
  animation: dots 1.5s steps(4, end) infinite;
}
@keyframes dots {
  0% {
    content: "";
  }
  25% {
    content: ".";
  }
  50% {
    content: "..";
  }
  75% {
    content: "...";
  }
}

/* --- Loading Spinner --- */
.spinner {
  width: 24px;
  height: 24px;
  border: 2.5px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 600px) {
  :root {
    --page-padding: 14px;
    --bottom-bar-height: 52px;
  }
  .hero-section {
    padding: 44px 16px 28px;
  }
  .hero-title {
    font-size: 1.4rem;
  }
  .quote-item {
    padding: 13px 18px;
    font-size: 0.92rem;
  }
  .bottom-bar {
    gap: 10px;
  }
  .bottom-bar p {
    font-size: 0.8rem;
  }
  .bottom-bar a {
    font-size: 0.78rem;
    padding: 4px 10px;
  }
}

/* --- Container query support (modern) --- */
@container (max-width: 400px) {
  .quote-item {
    padding: 10px 14px;
    font-size: 0.85rem;
  }
}

/* --- Print styles --- */
@media print {
  .bottom-bar,
  .page-transition {
    display: none;
  }
  .hero-section::before {
    display: none;
  }
}