/* =========================================================
 * MasterHu Homepage Styles
 * Author: MasterHu
 * Website: https://masterhu.com.cn
 * License: CC BY-NC 4.0
 * ========================================================= */

/* ==================================================
   Global Resets & Fonts
================================================== */
:root {
  /* Modern Style Font Stack */
  --font-family-zh: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-family-en: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-family-title: "Pacifico-Regular", cursive;
  
  /* Modern Design Tokens */
  --modern-radius-lg: 20px;
  --modern-radius-md: 16px;
  --modern-radius-sm: 10px;
  --modern-transition: cubic-bezier(0.25, 0.1, 0.25, 1);
}

::selection {
  background-color: var(--accent-color);
  color: #ffffff;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background-color: rgba(128, 128, 128, 0.4);
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

::-webkit-scrollbar-thumb:hover {
  background-color: rgba(128, 128, 128, 0.6);
}

@font-face {
  font-family: "Ubuntu-Regular";
  src: url(../fonts/Ubuntu-Regular.ttf);
  font-display: swap;
}

@font-face {
  font-family: "Pacifico-Regular";
  src: url(../fonts/Pacifico-Regular.ttf);
  font-display: swap;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  width: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  overflow-x: hidden;

  font-family: var(--font-family-en), var(--font-family-zh);
  color: var(--primary-text-color);
  background: var(--main-bg-color);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  
  transition: color 0.1s ease, background-color 0.2s ease;
}

a {
  text-decoration: none;
  color: inherit;
  outline: none;
  border: none;
  -webkit-tap-highlight-color: transparent;
}

a:hover, a:focus {
  text-decoration: none;
}

/* Accessibility: Visible focus for keyboard users */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Scrollbar Customization (Global) */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-thumb {
  height: 20%;
  border-radius: 8px;
  background-color: var(--primary-text-color);
}

::-webkit-scrollbar-track {
  background-color: var(--scrollbar-track-color, linear-gradient(50deg, #a2d0ff, #ffffff));
}

/* ==================================================
   Components: Loading Overlay
================================================== */
.mh-loading {
  position: fixed;
  inset: 0;
  z-index: var(--z-index-loading);
  
  display: flex;
  justify-content: center;
  align-items: center;
  
  /* Cyberpunk Deep Space Background */
  background: radial-gradient(circle at center, #1a1a2e 0%, #16213e 50%, #000000 100%);
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), 
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  perspective: 1000px;
}

.mh-loading.hide {
  opacity: 0;
  transform: scale(1.2);
  pointer-events: none;
}

.mh-loading-spinner {
  position: relative;
  width: 80px;
  height: 80px;
  transform-style: preserve-3d;
  animation: mh-spin-core 2s linear infinite;
  
  /* Glowing Core */
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.9) 0%, rgba(0, 255, 255, 0.6) 15%, transparent 40%);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
}

/* Core Glow */
.mh-loading-spinner::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  border: 4px solid transparent;
  border-top-color: #00ffff;
  border-bottom-color: #00ffff;
  filter: drop-shadow(0 0 10px #00ffff);
  animation: mh-spin-orbit-1 1.5s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

/* Outer Orbit */
.mh-loading-spinner::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 4px solid transparent;
  border-left-color: #ff00ff;
  border-right-color: #ff00ff;
  filter: drop-shadow(0 0 10px #ff00ff);
  animation: mh-spin-orbit-2 2s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite reverse;
}

/* Loading Text */
.mh-loading::after {
  content: "SYSTEM INITIALIZING...";
  position: absolute;
  bottom: 25%;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  letter-spacing: 4px;
  color: #00ffff;
  text-shadow: 0 0 10px #00ffff;
  animation: mh-text-pulse 2s ease-in-out infinite;
  opacity: 0.8;
}

@keyframes mh-text-pulse {
  0%, 100% { opacity: 0.4; letter-spacing: 4px; }
  50% { opacity: 1; letter-spacing: 6px; }
}

@keyframes mh-spin-core {
  0% { transform: rotateZ(0deg); }
  100% { transform: rotateZ(360deg); }
}

@keyframes mh-spin-orbit-1 {
  0% { transform: rotateX(0deg) rotateY(0deg); }
  50% { transform: rotateX(180deg) rotateY(180deg); }
  100% { transform: rotateX(360deg) rotateY(360deg); }
}

@keyframes mh-spin-orbit-2 {
  0% { transform: rotateX(0deg) rotateY(0deg); }
  50% { transform: rotateX(-180deg) rotateY(90deg); }
  100% { transform: rotateX(-360deg) rotateY(180deg); }
}

/* Fallback for reduced motion */
@media (prefers-reduced-motion: reduce) {
  .mh-loading-spinner,
  .mh-loading-spinner::before,
  .mh-loading-spinner::after {
    animation-duration: 10s;
  }
}

/* ==================================================
   Custom Cursor
================================================== */
body {
  /* Default Cursor: High Contrast Black Arrow (macOS Black Style) */
  cursor: url("../svg/cursor-auto.svg"), auto;
}

a, button, .mh-site-card, .mh-project-card, .nav-theme-toggle, .hero-actions-item, .nav-burger {
  /* Pointer Cursor: High Contrast Black Hand */
  cursor: url("../svg/cursor-pointer.svg"), pointer;
}

/* ==================================================
   Layout: Navigation
================================================== */
.mh-nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-index-nav);

  width: 90%;
  max-width: 1200px;
  height: 60px;

  /* Modern Blur Effect for Navigation */
  background: var(--nav-bg-color);
  border: var(--glass-border);
  border-radius: 999px; /* Pill shape */
  box-shadow: var(--modern-shadow);
  
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0 24px;
}

/* Gradient Text Effect */
.gradient-text {
  font-family: var(--font-family-title);
  color: var(--primary-text-color);
  
  background-image: var(--gradient);
  background-size: 200% auto;
  background-position: 0% center;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  
  will-change: background-position;
  animation: mh-kf-fluid-gradient 10s ease-in-out infinite;
}

.nav-container .gradient-text {
  font-size: 20px;
}

@keyframes mh-kf-fluid-gradient {
  0%   { background-position: 100% 50%; }
  50%  { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 5px;
  
  font-size: 15px;
  font-weight: 500;
  color: var(--primary-text-color);
  
  transition: 0.3s;
}

.nav-links a:hover {
  color: var(--accent-color);
  text-shadow: 0 0 6px rgba(116, 123, 255, 0.4);
  transform: scale(1.1);
}

/* Theme Toggle Button */
.nav-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  
  padding: 6px;
  border: none;
  border-radius: 6px;
  background: transparent;
  
  color: var(--primary-text-color);
  font-size: 15px;
  white-space: nowrap;
  cursor: pointer;
  
  transition: all 0.3s ease;
}

.nav-theme-toggle:hover {
  color: var(--accent-color);
  text-shadow: 0 0 6px rgba(116, 123, 255, 0.4);
  transform: scale(1.1);
}

.nav-theme-toggle:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Burger Menu (Hidden on Desktop) */
.nav-burger {
  display: none;
  cursor: pointer;
}

.nav-burger div {
  width: 25px;
  height: 3px;
  margin: 5px;
  background-color: var(--primary-text-color);
  transition: all 0.3s ease;
  border-radius: 4px;
}

.toggle .line1 { transform: rotate(-45deg) translate(-5px, 6px); }
.toggle .line2 { opacity: 0; }
.toggle .line3 { transform: rotate(45deg) translate(-5px, -6px); }

/* Background Filter Overlay */
.mh-bg-filter {
  position: fixed;
  z-index: var(--z-index-negative);
  width: 100%;
  height: 100%;
  
  background: var(--back-filter-color);
  backdrop-filter: blur(var(--back-filter));
  -webkit-backdrop-filter: blur(var(--back-filter));
  
  pointer-events: none;
  will-change: backdrop-filter;
  transition: all 0.3s ease;
}

/* ==================================================
   Layout: Main Structure
================================================== */
.mh-layout {
  position: relative;
  display: flex;
  flex-direction: row;
  
  width: 100%;
  max-width: 1150px;
  margin: 0 auto;
  padding-top: 60px;
  
  transition: transform 0.5s ease;
}

/* ==================================================
   Component: Sidebar
================================================== */
.mh-sidebar {
  position: sticky;
  top: 0;
  left: 0;
  
  display: flex;
  flex-direction: column;
  align-items: center;
  
  width: 230px;
  height: 100vh;
  padding: 0 15px;
  overflow-y: scroll;
}

.mh-sidebar::-webkit-scrollbar {
  display: none;
}

.mh-avatar {
  flex-shrink: 0;
  width: 90%;
  aspect-ratio: 1/1;
  margin: 50px auto 0;
  
  background-image: url(../img/avatar.gif);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 50%;
}

.mh-sidebar-section {
  flex-shrink: 0;
  width: 100%;
  margin-top: 15px;
  padding: 20px;
  
  background: var(--card-bg-color);
  border-radius: var(--modern-radius-lg);
  border: var(--glass-border);
  box-shadow: var(--modern-shadow);
  
  backdrop-filter: blur(var(--card-filter));
  -webkit-backdrop-filter: blur(var(--card-filter));
}

/* --- Bio Section --- */
.mh-bio {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.mh-bio-item {
  display: flex;
  align-items: center;
  margin-bottom: 5px;
  
  font-size: 15px;
  line-height: 20px;
  overflow: hidden;
}

.mh-bio-item i, .mh-bio-item svg {
  width: 16px;
  height: 16px;
  margin-right: 10px;
  fill: var(--icon-fill-color);
  font-size: 18px;
}

/* --- Tags Section --- */
.mh-tags {
  display: flex;
  flex-wrap: wrap;
  padding: 14px;
}

.mh-tags-item {
  display: flex;
  justify-content: center;
  align-items: center;
  
  height: 28px;
  margin: 0 5px 5px 0;
  padding: 10px;
  
  background: var(--tag-bg-color);
  border-radius: 10px;
  font-size: 13px;
}

/* --- Status Section --- */
.mh-status {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-height: min-content;
}

.mh-status-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 0;
  margin-bottom: 5px;
  
  font-size: 13px;
  line-height: 20px;
}

.mh-status-title {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--secondary-text-color);
}

.mh-status-text {
  font-weight: 600;
  color: var(--primary-text-color);
  font-variant-numeric: tabular-nums;
}

.mh-status-item--uptime {
  align-items: center;
}

.mh-status-text--uptime {
  text-align: center;
  
  font-size: 12px;
  font-weight: 500;
  color: var(--secondary-text-color);
  
  white-space: pre-wrap;
  word-break: break-word;
}

.mh-inline-loading {
  font-size: 12px;
  font-style: italic;
  font-weight: normal;
  opacity: 0.5;
}

/* --- Timeline Section --- */
.mh-timeline-list {
  width: 100%;
  max-height: 220px;
  padding-left: 8px;
  
  list-style: none;
  font-size: 13px;
  
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
}

.mh-timeline-list::-webkit-scrollbar {
  display: none;
}

.mh-timeline-item {
  position: relative;
  padding: 0 0 24px 20px;
  border-left: 3px solid var(--timeline-line-color);
  scroll-snap-align: start;
  
  color: var(--primary-text-color);
  transition: border-left-color 0.3s ease;
}

.mh-timeline-item--more {
  border-left-style: dashed;
  border-left-color: rgba(213, 213, 213, 0.1);
}

.mh-timeline-item--more .mh-timeline-dot {
  display: none;
}

.mh-timeline-dot {
  position: absolute;
  top: 6px;
  left: -6px;
  
  width: 8px;
  height: 8px;
  
  background-color: #fff;
  border: 2px solid #fff;
  border-radius: 50%;
  
  transition: all 0.3s ease;
}

.mh-timeline-list .mh-timeline-item:first-child .mh-timeline-dot {
  background-color: #09f069 !important;
  border-color: #09f069 !important;
  animation: mh-timeline-pulse 1.8s ease infinite;
}

@keyframes mh-timeline-pulse {
  0%   { box-shadow: 0 0 0 0px rgba(9, 240, 105, 0.7); }
  70%  { box-shadow: 0 0 0 8px rgba(9, 240, 105, 0); }
  100% { box-shadow: 0 0 0 0px rgba(9, 240, 105, 0); }
}

.mh-timeline-text {
  position: relative;
  margin-bottom: 4px;
  
  font-size: 13px;
  line-height: 1.5;
  color: var(--primary-text-color);
  
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mh-timeline-item:hover .mh-timeline-text {
  white-space: normal;
  overflow: visible;
}

.mh-timeline-date {
  font-size: 12px;
  color: var(--secondary-text-color);
}

.mh-timeline-item:hover .mh-timeline-date {
  transform: scale(1.05);
  opacity: 0.9;
}

.mh-timeline-item:hover .mh-timeline-dot {
  background-color: #aaffcd;
  border-color: #aaffcd;
  box-shadow: 0 0 10px rgba(170, 255, 205, 0.4);
}

/* ==================================================
   Component: Content Area
================================================== */
.mh-content {
  position: relative;
  display: flex;
  flex-direction: column;
  
  width: calc(100% - 230px);
  padding: 20px;
  padding-bottom: 50px;
}

/* --- Hero Section --- */
.avatar-mobile {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin-top: 20px;
}

.avatar-mobile img {
  display: block;
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  
  border-radius: 50%;
  border: 0.5px solid #ffffff;
  object-fit: cover;
}

.hero-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero-greeting {
  margin: 16px 0;
  font-family: var(--font-family-title);
  font-size: 56px;
  font-weight: 800;
  text-align: center;
}

.hero-motto {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.02em;
  text-align: center;
  color: var(--motto-color);
}

#hero-motto::after {
  content: '|';
  margin-left: 4px;
  color: var(--accent-color);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* --- Hero Actions --- */
.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  
  width: 100%;
  height: 60px;
  margin-top: 12px;
  overflow-x: scroll;
}

.hero-actions::-webkit-scrollbar {
  display: none;
}

.hero-actions-item {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  
  width: 49px;
  height: 43px;
  margin-left: 10px;
  padding: 0;
  
  background: var(--card-bg-color);
  backdrop-filter: blur(var(--card-filter));
  -webkit-backdrop-filter: blur(var(--card-filter));
  
  border-radius: var(--modern-radius-sm);
  border: var(--glass-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  
  cursor: pointer;
  
  transition: width 0.3s var(--modern-transition), opacity 0.3s var(--modern-transition), transform 0.2s var(--modern-transition);
}

.hero-actions-item:hover {
  width: 95px;
  background: var(--card-hover-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.hero-actions-item:active {
  transform: scale(0.96);
}

.hero-actions-item svg {
  width: 22px;
  height: 22px;
  margin-right: 3px;
  fill: var(--icon-fill-color);
  font-size: 22px;
}

.hero-actions-item-tip {
  display: none;
  white-space: nowrap;
  color: var(--primary-text-color);
}

.hero-actions-item:hover .hero-actions-item-tip {
  display: block;
}

/* --- Snake Graph --- */
.snake {
  width: 85%;
  max-width: 800px;
  margin: 12px auto;
}

.snake img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Sections Title --- */
.mh-sections-title {
  display: flex;
  align-items: center;
  margin: 20px 0;
  
  font-size: 26px;
  font-weight: 800;
  transition: transform 0.4s ease;
}

.mh-sections-title svg {
  width: 26px;
  height: 26px;
  margin-right: 8px;
  fill: var(--icon-fill-color);
}

.mh-sections-title:hover {
  transform: translateY(-5px);
}

/* --- Grids (Site & Project) --- */
.mh-site-grid, .mh-project-grid {
  display: flex;
  flex-wrap: wrap;
}

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

.mh-site-card, .mh-project-card {
  display: flex;
  
  width: calc(25% - 14px);
  height: 100px;
  margin: 7px;
  padding: 15px;
  
  background-color: var(--card-bg-color);
  border-radius: var(--modern-radius-md);
  border: var(--glass-border);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  
  backdrop-filter: blur(var(--card-filter));
  -webkit-backdrop-filter: blur(var(--card-filter));
  
  opacity: 0; /* Initial state for animation */
  animation: fadeInUp 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
  
  transition: opacity 0.5s ease, background-color 0.3s ease, transform 0.2s var(--modern-transition), box-shadow 0.2s var(--modern-transition);
}

/* Staggered Delays for Cards */
.mh-site-card:nth-child(1) { animation-delay: 0.1s; }
.mh-site-card:nth-child(2) { animation-delay: 0.2s; }
.mh-site-card:nth-child(3) { animation-delay: 0.3s; }
.mh-site-card:nth-child(4) { animation-delay: 0.4s; }
.mh-project-card:nth-child(1) { animation-delay: 0.5s; }
.mh-project-card:nth-child(2) { animation-delay: 0.6s; }

.mh-site-card:hover, .mh-project-card:hover {
  box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.12);
  transform: translateY(-4px);
}

.mh-site-card:active, .mh-project-card:active {
  transform: scale(0.98);
}

.mh-site-card:hover .mh-site-content,
.mh-project-card:hover .mh-project-content {
  width: 100%;
}

.mh-site-card:hover .mh-site-icon,
.mh-project-card:hover .mh-project-icon {
  width: 0%;
}

.mh-site-content, .mh-project-content {
  width: 80%;
  height: 100%;
  transition: width 0.4s ease;
}

.mh-site-content h3, .mh-project-content h3 {
  margin: 0;
  font-size: 16px;
  font-weight: normal;
  color: var(--card-title-color);
  transition: font-size 0.4s ease;
}

.mh-site-card:hover h3, .mh-project-card:hover h3 {
  font-size: 20px;
}

.mh-site-content p, .mh-project-content p {
  margin-top: 15px;
  font-size: 12px;
  color: var(--secondary-text-color);
}

.mh-site-icon, .mh-project-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  
  width: 20%;
  height: 100%;
  overflow: hidden;
  transition: width 0.4s ease;
}

.mh-site-icon img, .mh-project-icon img {
  width: 39px;
  height: 39px;
  transition: transform 0.4s ease;
  animation: mh-float 3s ease-in-out infinite;
}

@keyframes mh-float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-3px); }
  100% { transform: translateY(0px); }
}

.mh-site-card:hover img, .mh-project-card:hover img {
  transform: scale(1.1) rotate(10deg);
  animation-play-state: paused;
}

/* --- Skills --- */
.mh-skills {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding: 20px;
}

.mh-skills img {
  width: 85%;
  max-width: 960px;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
}

.mh-skills #skill-mobile {
  display: none;
}

/* --- Footer --- */
footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 10px;
  
  background: var(--card-bg-color);
  backdrop-filter: blur(var(--card-filter));
  -webkit-backdrop-filter: blur(var(--card-filter));
  
  text-align: center;
  font-size: 13px;
  color: var(--footer-text-color);
}

/* ==================================================
   Component: Modal
================================================== */
.mh-modal {
  position: fixed;
  top: 0;
  z-index: var(--z-index-modal);
  
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  
  width: 100vw;
  height: 100vh;
  
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mh-modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-main {
  position: relative;
  z-index: var(--z-index-modal-content);
  
  display: flex;
  justify-content: center;
  align-items: center;
  
  width: auto;
  max-width: 800px;
  max-height: 85vh;
  min-width: 300px;
  
  background: var(--card-bg-color);
  
  /* Glassmorphism Border */
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  border-left: 1px solid rgba(255, 255, 255, 0.15);
  
  border-radius: 24px;
  
  /* Enhanced Deep Shadow */
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    
  overflow: hidden;
  
  transform: scale(0.9) translateY(20px);
  transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.modal-main.active {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10;
  
  display: flex;
  justify-content: center;
  align-items: center;
  
  width: 36px;
  height: 36px;
  
  background: rgba(0, 0, 0, 0.2);
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  backdrop-filter: blur(4px);
  
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1) rotate(90deg);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.modal-img {
  display: block;
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
}

/* Mobile Stack in Modal */
.modal-stack {
  position: relative;
  width: 100%;
  padding: 40px 20px 20px; /* Top padding for close button */
  background: transparent;
  box-shadow: none;
  border: none;
  backdrop-filter: none;
}

.modal-stack-inner {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.modal-stack .stack-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-stack .stack-img + .stack-img {
  display: none;
}

.modal-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  
  display: flex;
  justify-content: center;
  align-items: center;
  
  width: 32px;
  height: 32px;
  
  background: rgba(0, 0, 0, 0.3);
  border-radius: 50%;
  backdrop-filter: blur(4px);
  
  color: #ffffff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-arrow:active {
  transform: translateY(-50%) scale(0.9);
  background: rgba(0, 0, 0, 0.5);
}

.modal-arrow-left { left: 0; }
.modal-arrow-right { right: 0; }

.modal-hint {
  display: none;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  
  padding: 6px 16px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 20px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  
  color: rgba(255, 255, 255, 0.9);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

/* ==================================================
   Utilities & Animations
================================================== */
/* Desktop Defaults (Hide Mobile-Specific) */
@media (min-width: 800px) {
  .avatar-mobile { display: none; }
  .modal-stack { display: none; }
}

@keyframes nav-link-fade {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0px); }
}