/* ============================================================
   Mattur Sun Sulayman — 个人作品集
   现代科技感主题 · 暗色 / 渐变 / 玻璃拟态 / 滚动动效
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 色彩 */
  --bg: #07070b;
  --bg-2: #0d0d14;
  --surface: rgba(255, 255, 255, 0.025);
  --surface-2: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #f4f4f6;
  --text-muted: #9b9ba8;
  --text-dim: #6b6b78;

  --accent: #6366f1;       /* indigo */
  --accent-2: #06b6d4;     /* cyan */
  --accent-3: #ec4899;     /* pink */
  --grad: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --grad-soft: linear-gradient(135deg, rgba(99,102,241,.16), rgba(6,182,212,.16));

  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', 'Cascadia Code', Consolas, monospace;

  /* 尺寸 */
  --container: 1180px;
  --radius: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 背景装饰 ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}

.bg-orb {
  position: fixed;
  z-index: -2;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
  pointer-events: none;
  will-change: transform;
}
.bg-orb--1 {
  width: 520px; height: 520px;
  top: -180px; left: -120px;
  background: radial-gradient(circle, #6366f1, transparent 70%);
  animation: float1 18s var(--ease) infinite alternate;
}
.bg-orb--2 {
  width: 480px; height: 480px;
  top: 120px; right: -160px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  animation: float2 22s var(--ease) infinite alternate;
}
@keyframes float1 { to { transform: translate(80px, 60px) scale(1.1); } }
@keyframes float2 { to { transform: translate(-70px, 90px) scale(1.15); } }

/* ---------- 通用 ---------- */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hl {
  color: var(--text);
  background: var(--grad-soft);
  padding: 0 .25em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
  margin-right: 8px;
  vertical-align: middle;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .4; } }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  transition: background .3s var(--ease), border-color .3s, padding .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7,7,11,.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--border);
  padding: 12px 24px;
}
.nav__logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.nav__logo-mark {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--grad);
  color: #fff;
  font-weight: 800;
  font-family: var(--font-mono);
  box-shadow: 0 6px 20px rgba(99,102,241,.4);
}
.nav__logo-text {
  font-size: 15px;
  background: linear-gradient(90deg, #fff, #9b9ba8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav__links {
  display: flex; align-items: center; gap: 4px;
}
.nav__link {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-muted);
  border-radius: 10px;
  transition: color .2s, background .2s;
}
.nav__link:hover { color: var(--text); background: var(--surface); }
.nav__link--cta {
  color: #fff;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.nav__link--cta:hover { border-color: var(--accent); color: var(--accent-2); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav__burger span {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform .25s var(--ease), box-shadow .25s, background .25s;
  will-change: transform;
}
.btn--primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 30px -8px rgba(99,102,241,.6);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -8px rgba(99,102,241,.8);
}
.btn--ghost {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateY(-2px);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
}
.hero__inner { position: relative; z-index: 1; }
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.hero__title {
  font-size: clamp(2.8rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.18em;
}
.hero__title span { display: inline-block; }
.hero__title-accent {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero__tagline {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.6;
}
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 64px; }

.hero__stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1;
}
.stat__plus {
  display: inline;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--accent-2);
  margin-left: 2px;
}
.stat__label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 8px;
  letter-spacing: 0.02em;
}

.hero__scroll {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--border-strong);
  border-radius: 14px;
  display: grid;
  place-items: start center;
  padding-top: 7px;
}
.hero__scroll-mouse span {
  width: 4px; height: 8px;
  border-radius: 4px;
  background: var(--accent-2);
  animation: scroll 1.8s infinite;
}
@keyframes scroll {
  0% { opacity: 0; transform: translateY(0); }
  40% { opacity: 1; }
  80% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 0; }
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 110px 0;
  position: relative;
}
.section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.section__num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 8px;
}
.section__title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.section__sub {
  width: 100%;
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 4px;
}

/* ---------- 关于 ---------- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 920px;
}
.about__text {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.85;
}

/* ---------- 技能 ---------- */
.skills__groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .3s, transform .3s var(--ease);
}
.skill-group:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
}
.skill-group__title {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--accent-2);
  margin-bottom: 18px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 13.5px;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  transition: all .2s;
  cursor: default;
}
.tag:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: var(--grad-soft);
}

/* ---------- 作品集 ---------- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .4s var(--ease), border-color .3s, box-shadow .4s;
}
.project:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: 0 24px 50px -20px rgba(99,102,241,.35);
}
.project__cover {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  background: var(--g, var(--grad));
  overflow: hidden;
}
.project__cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(255,255,255,.25), transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(0,0,0,.25), transparent 50%);
}
.project__cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: .5;
}
.project__cover-tag {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 5px 10px;
  border-radius: 6px;
  background: rgba(0,0,0,.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  letter-spacing: 0.03em;
}
.project__cover-arrow {
  position: absolute;
  bottom: 14px; right: 16px;
  z-index: 2;
  font-size: 22px;
  color: #fff;
  opacity: 0;
  transform: translate(-6px, 6px);
  transition: opacity .3s, transform .3s var(--ease);
}
.project:hover .project__cover-arrow {
  opacity: 1;
  transform: translate(0, 0);
}
.project__body {
  padding: 22px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.project__title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.project__desc {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.project__tags li {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

/* ---------- 联系 ---------- */
.contact {
  text-align: center;
  padding: 140px 0;
}
.contact__inner { max-width: 720px; margin: 0 auto; }
.contact__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.contact__title {
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 36px;
}
.contact__email {
  display: inline-block;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-family: var(--font-mono);
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all .3s var(--ease);
  margin-bottom: 40px;
}
.contact__email:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px rgba(99,102,241,.5);
}
.contact__socials {
  display: flex;
  justify-content: center;
  gap: 14px;
}
.social {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all .25s var(--ease);
}
.social:hover {
  color: #fff;
  border-color: var(--accent);
  background: var(--grad-soft);
  transform: translateY(-3px);
}

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 12px;
}
.footer__credit { font-family: var(--font-mono); }

/* ---------- 滚动出现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .skills__groups { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .about__grid { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(80vw, 320px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 40px;
    gap: 14px;
    background: rgba(7,7,11,.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform .4s var(--ease);
  }
  .nav__links.open { transform: translateX(0); }
  .nav__link { font-size: 18px; }
  .nav__burger { display: flex; z-index: 101; }

  .hero { padding-top: 100px; }
  .hero__cta { margin-bottom: 48px; }
  .hero__stats { gap: 32px; }
  .hero__scroll { display: none; }

  .projects__grid { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
  .section__head { margin-bottom: 40px; }
}

/* ---------- 减少动效（无障碍） ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   作品集 · 动态加载扩展样式
   ============================================================ */

/* ---------- 分类筛选 ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 32px 0 40px;
  padding: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  width: fit-content;
  max-width: 100%;
}
.filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: transparent;
  border: none;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: color .2s, background .2s, transform .2s;
  font-family: inherit;
}
.filter:hover {
  color: var(--text);
  background: rgba(255,255,255,.04);
}
.filter.is-active {
  color: #0b1020;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 20px -8px var(--accent);
}
.filter__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: 11px;
  background: rgba(255,255,255,.08);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.filter.is-active .filter__count {
  background: rgba(11,16,32,.18);
  color: #0b1020;
}

/* ---------- 作品卡片（重写，覆盖原 .project 样式） ---------- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform .35s cubic-bezier(.2,.7,.2,1), border-color .25s, box-shadow .35s;
}
.project:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px -20px rgba(99,102,241,.4);
}
.project__cover {
  position: relative;
  display: block;
  aspect-ratio: 16/10;
  background: var(--g, linear-gradient(135deg,var(--accent),var(--accent-2)));
  overflow: hidden;
}
.project__cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity .4s;
}
.project__cover img.loaded { opacity: 1; }
.project__cover-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(11,16,32,.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
}
.project__cover-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.92);
  font-size: 42px;
  pointer-events: none;
}
.project__cover-icon svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,.25));
}
/* —— 视频卡片专属：大播放按钮 + CTA —— */
.project__cover-tag--video {
  background: rgba(239,68,68,.85);
  color: #fff;
}
.project__cover-icon--video {
  opacity: .35;
}
.project__cover-icon--video svg {
  width: 72px;
  height: 72px;
  opacity: .8;
}
.project__cover-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,.95);
  color: #ef4444;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(0,0,0,.35);
  transition: transform .25s var(--ease), background .25s var(--ease);
  pointer-events: none;
}
.project__cover-play svg {
  width: 28px;
  height: 28px;
  margin-left: 4px;
}
.project:hover .project__cover-play {
  transform: translate(-50%, -50%) scale(1.12);
  background: #fff;
}
.project__cover-cta {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  white-space: nowrap;
  pointer-events: none;
}
.project__body {
  padding: 18px 20px 22px;
}
.project__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.project__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.project__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--muted);
  opacity: .75;
  margin-bottom: 12px;
}
.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.project__tags li {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 6px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  color: var(--muted);
}

/* ---------- 加载更多按钮 ---------- */
.projects__more {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}
.btn-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .25s, transform .25s, background .25s;
  font-family: inherit;
}
.btn-more:hover {
  border-color: var(--accent);
  background: rgba(99,102,241,.06);
  transform: translateY(-2px);
}
.btn-more__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 8px;
  border-radius: 12px;
  background: var(--accent);
  color: #0b1020;
  font-size: 11px;
  font-weight: 700;
}

/* ---------- 空状态 ---------- */
.projects__empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  font-size: 14px;
}

/* ---------- 详情模态框 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal.is-open {
  display: flex;
  animation: modal-in .25s ease-out;
}
@keyframes modal-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5,8,18,.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal__panel {
  position: relative;
  z-index: 1;
  width: min(960px, 100%);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 40px 80px -20px rgba(0,0,0,.6);
  animation: panel-in .35s cubic-bezier(.2,.7,.2,1);
}
@keyframes panel-in {
  from { opacity: 0; transform: translateY(20px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 5;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11,16,32,.6);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background .2s, transform .2s;
}
.modal__close:hover {
  background: var(--accent);
  color: #0b1020;
  transform: rotate(90deg);
}
.modal__media {
  width: 100%;
  min-height: 280px;
  max-height: 60vh;
  background: #05060f;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.modal__media img,
.modal__media video,
.modal__media embed,
.modal__media iframe {
  max-width: 100%;
  max-height: 60vh;
  width: auto;
  height: auto;
  display: block;
}
.modal__media-icon {
  font-size: 80px;
  color: var(--muted);
  opacity: .6;
}
.modal__media-icon svg {
  width: 80px;
  height: 80px;
}
.modal__content {
  padding: 28px 32px 32px;
}
.modal__category {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(99,102,241,.15);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 12px;
}
.modal__title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.modal__date {
  font-size: 12px;
  color: var(--muted);
  opacity: .7;
  margin-bottom: 14px;
}
.modal__desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  opacity: .9;
  margin-bottom: 18px;
}
.modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.modal__tags li {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 8px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  color: var(--text);
}
.modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.modal__actions .btn-primary,
.modal__actions .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: transform .2s, box-shadow .2s;
}
.modal__actions .btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  box-shadow: 0 6px 20px -8px var(--accent);
}
.modal__actions .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px -8px var(--accent);
}
.modal__actions .btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.modal__actions .btn-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- 响应式调整 ---------- */
@media (max-width: 880px) {
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .filters { width: 100%; overflow-x: auto; flex-wrap: nowrap; border-radius: 14px; }
  .filter { flex-shrink: 0; }
  .modal__content { padding: 22px 20px 24px; }
  .modal__title { font-size: 22px; }
}
@media (max-width: 560px) {
  .projects__grid { grid-template-columns: 1fr; }
  .modal__actions .btn-primary,
  .modal__actions .btn-secondary { flex: 1 1 100%; justify-content: center; }
}

/* ============================================================
   管理员上传功能 · 样式
   ============================================================ */

/* 管理员入口按钮（作品集标题旁的小锁图标） */
.admin-entry {
  margin-left: auto;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  transition: all .2s var(--ease);
  align-self: center;
}
.admin-entry:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(99,102,241,.08);
  transform: translateY(-1px);
}
.admin-entry.is-active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(99,102,241,.12);
}

/* 管理员工具栏 */
.admin-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0 4px;
  padding: 12px 16px;
  background: var(--grad-soft);
  border: 1px solid rgba(99,102,241,.25);
  border-radius: 14px;
  animation: fade-slide-in .35s var(--ease);
}
@keyframes fade-slide-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.btn-admin {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s var(--ease);
  border: 1px solid transparent;
}
.btn-admin--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  box-shadow: 0 6px 18px -6px rgba(99,102,241,.6);
}
.btn-admin--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px -6px rgba(99,102,241,.8);
}
.btn-admin--ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-muted);
}
.btn-admin--ghost:hover {
  color: var(--text);
  border-color: var(--border-strong);
}
.admin-status {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.admin-status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* +号上传卡片（作品网格第一个） */
.project--add {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 14px;
  min-height: 280px;
  background: transparent;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-muted);
  transition: all .25s var(--ease);
  position: relative;
  overflow: hidden;
}
.project--add::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity .25s var(--ease);
}
.project--add:hover {
  color: var(--text);
  border-color: var(--accent);
  border-style: solid;
  transform: translateY(-4px);
}
.project--add:hover::before { opacity: 1; }
.project--add > * { position: relative; z-index: 1; }
.project--add-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad);
  color: #0b1020;
  box-shadow: 0 10px 28px -8px rgba(99,102,241,.6);
  transition: transform .25s var(--ease);
}
.project--add:hover .project--add-icon { transform: scale(1.08) rotate(90deg); }
.project--add-icon svg { width: 28px; height: 28px; }
.project--add-text {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
}
.project--add-hint {
  font-size: 12px;
  color: var(--text-dim);
}

/* 小型模态框（登录） */
.modal--small .modal__panel { width: min(420px, 100%); }

/* 登录面板 */
.login-panel {
  padding: 36px 32px 30px;
  text-align: center;
}
.login-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-soft);
  color: var(--accent);
  border: 1px solid rgba(99,102,241,.3);
}
.login-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.login-sub {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-form input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color .2s, background .2s;
}
.login-form input:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(99,102,241,.06);
}
.login-submit {
  padding: 12px 16px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  font-weight: 700;
  font-size: 14.5px;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  box-shadow: 0 8px 20px -8px rgba(99,102,241,.6);
}
.login-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -8px rgba(99,102,241,.8);
}
.login-hint {
  margin-top: 18px;
  font-size: 12px;
  color: var(--text-dim);
}
.login-hint code {
  font-family: var(--font-mono);
  padding: 2px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent-2);
}

/* 上传模态框 */
.upload-panel { width: min(640px, 100%); }
.upload-content { padding: 32px 32px 28px; }
.upload-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.upload-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}

/* 拖拽区 */
.upload-dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: 14px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all .2s var(--ease);
  background: var(--surface);
  margin-bottom: 22px;
  outline: none;
}
.upload-dropzone:hover,
.upload-dropzone:focus,
.upload-dropzone.is-dragover {
  border-color: var(--accent);
  background: rgba(99,102,241,.06);
}
.upload-dropzone.is-dragover {
  border-style: solid;
  transform: scale(1.01);
}
.upload-dropzone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}
.upload-dropzone-inner svg { color: var(--accent); }
.dropzone-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}
.dropzone-hint {
  font-size: 12px;
  color: var(--text-dim);
}

/* 已选文件展示 */
.upload-dropzone-inner--chosen { width: 100%; }
.chosen-file {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: left;
}
.chosen-file-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--grad-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.chosen-file-icon svg { width: 22px; height: 22px; }
.chosen-file-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.chosen-file-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chosen-file-size {
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}
.chosen-file-remove {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s;
}
.chosen-file-remove:hover {
  color: #ef4444;
  border-color: #ef4444;
  background: rgba(239,68,68,.08);
}

/* 表单 */
.upload-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: .01em;
}
.form-label em {
  color: #ef4444;
  font-style: normal;
  margin-left: 2px;
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  transition: border-color .2s, background .2s;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(99,102,241,.05);
}
.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-dim);
}

/* 上传操作按钮 */
.upload-actions {
  display: flex;
  gap: 10px;
  margin-top: 6px;
}
.upload-submit {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, opacity .2s;
  box-shadow: 0 8px 20px -8px rgba(99,102,241,.6);
}
.upload-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -8px rgba(99,102,241,.8);
}
.upload-submit:disabled {
  opacity: .6;
  cursor: not-allowed;
}
.upload-cancel {
  padding: 12px 20px;
  border-radius: 12px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all .2s;
}
.upload-cancel:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

/* 存储模式提示 */
.upload-mode-hint {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.upload-mode-hint strong { color: var(--accent-2); }
.upload-mode-hint.is-fs { background: rgba(16,185,129,.06); border-color: rgba(16,185,129,.25); }
.upload-mode-hint.is-fs strong { color: #10b981; }

/* Toast 轻提示 */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 2000;
  padding: 12px 22px;
  border-radius: 12px;
  background: rgba(20,20,28,.95);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px -12px rgba(0,0,0,.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
  max-width: 90vw;
}
.toast.is-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.is-success { border-color: rgba(16,185,129,.4); }
.toast.is-error { border-color: rgba(239,68,68,.4); }
.toast.is-success::before,
.toast.is-error::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 10px;
  vertical-align: middle;
}
.toast.is-success::before { background: #10b981; }
.toast.is-error::before { background: #ef4444; }

/* 上传中状态 */
.upload-submit.is-loading {
  position: relative;
  color: transparent;
}
.upload-submit.is-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  margin: -9px 0 0 -9px;
  border: 2px solid rgba(11,16,32,.3);
  border-top-color: #0b1020;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 响应式：移动端表单单列 */
@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .upload-content { padding: 26px 20px 22px; }
  .login-panel { padding: 30px 22px 26px; }
  .admin-toolbar { flex-wrap: wrap; }
  .admin-status { margin-left: 0; width: 100%; order: -1; }
  .toast { bottom: 20px; font-size: 13px; padding: 10px 18px; }
}

/* 本地作品角标（仅浏览器可见的作品） */
.local-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 2;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(16,185,129,.85);
  color: #04231a;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .02em;
  font-family: var(--font-mono);
  backdrop-filter: blur(4px);
}

/* +号上传卡片适配 reveal 动画（继承 .reveal 的 opacity/transition） */
/* 管理员工具栏：不用 reveal，用 animation（hidden 切换时自动重播） */

/* 上传模态框内链接样式 */
.upload-mode-hint a {
  color: var(--accent-2);
  text-decoration: underline;
  cursor: pointer;
}
.upload-mode-hint code {
  font-family: var(--font-mono);
  padding: 1px 6px;
  background: var(--surface-2);
  border-radius: 4px;
  font-size: 11.5px;
}