@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&family=Playfair+Display:ital,wght@0,600;0,700;0,900;1,600&family=Space+Grotesk:wght@600;700&display=swap');

/* =========================================================
   THEME SKIRK — LIQUID GLASS (THỦY TINH LỎNG TRONG SUỐT)
   - Background: Skirk Singularity & Shattered Mirror Wallpaper
   - Liquid Glass: Ultra-translucent, Specular Rim Highlights,
     Inner Glow, Deep Backdrop Blur, Multi-device Responsive
   ========================================================= */
:root {
  /* Nền không gian Vực Sâu */
  --bg-deep: #050716;
  --bg-void: #090c24;

  /* Hệ màu Liquid Glass trong suốt */
  --glass-bg: rgba(10, 16, 42, 0.42);
  --glass-bg-hover: rgba(18, 28, 68, 0.56);
  --glass-border: rgba(255, 255, 255, 0.16);
  --glass-border-top: rgba(255, 255, 255, 0.38);
  --glass-shadow: 0 14px 40px rgba(2, 4, 18, 0.42);
  --glass-inset: inset 0 1.5px 2px rgba(255, 255, 255, 0.25);
  --glass-blur: blur(20px) saturate(180%);

  /* Tông màu đặc trưng của Skirk */
  --skirk-violet: #a855f7;
  --skirk-lavender: #c084fc;
  --skirk-violet-glow: rgba(168, 85, 247, 0.4);
  --skirk-cyan: #22d3ee;
  --skirk-cyan-bright: #38bdf8;
  --skirk-cyan-glow: rgba(34, 211, 238, 0.4);

  /* Bạch kim & chữ */
  --skirk-silver: #ffffff;
  --skirk-silver-soft: #f1f5f9;
  --skirk-muted: #cbd5e1;
  --skirk-subtle: #94a3b8;

  /* Mắt đỏ & cảnh báo Vực Sâu */
  --skirk-crimson: #f43f5e;
  --skirk-crimson-bright: #fb7185;
  --skirk-crimson-glow: rgba(244, 63, 94, 0.4);

  /* Đường viền & hiệu ứng ánh sáng */
  --line: rgba(255, 255, 255, 0.15);
  --line-cyan: rgba(34, 211, 238, 0.4);
  --line-hover: rgba(34, 211, 238, 0.65);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background-color: var(--bg-deep);
}

body {
  margin: 0;
  background: transparent;
  color: var(--skirk-silver-soft);
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* =========================================================
   ẢNH NỀN SKIRK CỐ ĐỊNH & HIỆU ỨNG VIGNETTE THỦY TINH
   ========================================================= */
.skirk-bg-fixed {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: url('skirk-bg.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 75% center;
  pointer-events: none;
}

/* Lớp phủ siêu trong suốt để thấy rõ hoàn toàn ảnh nền */
.skirk-bg-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: 
    radial-gradient(ellipse at 75% 35%, transparent 0%, rgba(5, 7, 24, 0.04) 60%, rgba(4, 6, 20, 0.15) 100%),
    linear-gradient(180deg, rgba(5, 7, 20, 0.02) 0%, rgba(5, 7, 20, 0.05) 50%, rgba(4, 6, 20, 0.15) 100%);
  pointer-events: none;
}

/* Hiệu ứng bụi sao tinh thể Vực Sâu */
.gold-dust {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image: 
    radial-gradient(circle, rgba(192, 132, 252, 0.75) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(56, 189, 248, 0.7) 0 1px, transparent 1.5px);
  background-size: 80px 80px, 130px 130px;
  background-position: 0 0, 40px 65px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,1) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
  z-index: -1;
  animation: cosmicDrift 60s linear infinite;
}

@keyframes cosmicDrift {
  0% { background-position: 0 0, 40px 65px; }
  100% { background-position: 80px 160px, 170px 325px; }
}

/* =========================================================
   HEADER — THANH ĐIỀU HƯỚNG LIQUID GLASS
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 76px;
  padding: 10px clamp(16px, 4vw, 60px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(6, 10, 30, 0.28);
  backdrop-filter: blur(10px) saturate(150%);
  -webkit-backdrop-filter: blur(10px) saturate(150%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 30px rgba(2, 4, 18, 0.25), inset 0 -1px 0 rgba(168, 85, 247, 0.25);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--skirk-silver);
  text-decoration: none;
  flex-shrink: 0;
  flex: 1;
}

.brand strong {
  display: block;
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
  background: linear-gradient(120deg, #ffffff 15%, #e0e7ff 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.6));
}

.brand small {
  display: block;
  color: var(--skirk-cyan-bright);
  font-size: 11px;
  letter-spacing: 1.2px;
  font-weight: 600;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.5);
}

/* Biểu tượng Nguyên Thạch Genshin Impact */
.primogem {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(56, 189, 248, 0.75)) drop-shadow(0 0 22px rgba(168, 85, 247, 0.5));
  flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), filter 0.35s ease;
  display: inline-block;
  vertical-align: middle;
}

.brand:hover .primogem,
.primogem:hover {
  transform: rotate(15deg) scale(1.12);
  filter: drop-shadow(0 0 18px rgba(56, 189, 248, 1)) drop-shadow(0 0 30px rgba(168, 85, 247, 0.85));
}

.primogem.small {
  width: 26px;
  height: 26px;
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
}

/* Menu chính — Liquid Glass Pills */
.main-nav {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.main-nav a {
  color: var(--skirk-muted);
  text-decoration: none;
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.25s ease;
  white-space: nowrap;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.18);
}

.main-nav a:hover,
.main-nav a.active {
  color: #ffffff;
  border-color: rgba(34, 211, 238, 0.5);
  border-top-color: rgba(255, 255, 255, 0.6);
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.28), rgba(34, 211, 238, 0.18));
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

/* Cụm Socials */
.socials {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: flex-end;
  justify-content: center;
  flex: 1;
  flex-shrink: 0;
}

.social {
  padding: 5px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--skirk-silver);
  font-weight: 600;
  font-size: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(10, 16, 40, 0.28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.2);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 116px;
}

.social.telegram:hover {
  border-color: var(--skirk-cyan);
  color: #fff;
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.4), inset 0 1px 2px rgba(255, 255, 255, 0.35);
  transform: translateY(-1.5px);
}

.social.discord:hover {
  border-color: var(--skirk-lavender);
  color: #fff;
  box-shadow: 0 0 18px rgba(192, 132, 252, 0.4), inset 0 1px 2px rgba(255, 255, 255, 0.35);
  transform: translateY(-1.5px);
}

/* =========================================================
   HERO BANNER — KHUNG KÍNH LỎNG LIQUID GLASS
   ========================================================= */
.hero {
  position: relative;
  min-height: 540px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  padding: 80px clamp(16px, 6vw, 100px);
  background: transparent;
}

.hero-art {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.sun, .mountain {
  display: none;
}

.stars {
  position: absolute;
  right: 8%;
  top: 16%;
  color: #c084fc;
  letter-spacing: 16px;
  opacity: 0.7;
  font-size: 15px;
  text-shadow: 0 0 12px rgba(192, 132, 252, 0.8);
}

/* Khung kính lỏng trong suốt Hero Content */
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 630px;
  background: rgba(7, 12, 36, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  padding: 32px 30px;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-top: 1.5px solid rgba(255, 255, 255, 0.5);
  box-shadow: 
    inset 0 1.5px 2px rgba(255, 255, 255, 0.3),
    0 15px 40px rgba(2, 4, 18, 0.45);
}

.eyebrow, .kicker {
  color: var(--skirk-cyan-bright);
  letter-spacing: 2px;
  font-size: 12.5px;
  font-weight: 700;
  display: inline-block;
  text-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
}

.hero h1 {
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: clamp(38px, 5.2vw, 64px);
  font-weight: 700;
  line-height: 1.12;
  margin: 14px 0 22px;
  color: #ffffff;
  letter-spacing: -0.5px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.95), 0 0 30px rgba(0, 0, 0, 0.9);
}

.hero h1 span, h2 span, .guide-title h1 span {
  color: #38bdf8;
  background: linear-gradient(110deg, #ffffff 0%, #67e8f9 35%, #38bdf8 70%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none !important;
  filter: drop-shadow(0 0 18px rgba(56, 189, 248, 0.55));
  display: inline-block;
}

/* Khối Cảnh Báo An Toàn — Mắt đỏ Skirk Thủy Tinh */
.notice {
  display: flex;
  gap: 14px;
  max-width: 580px;
  padding: 16px 18px;
  border: 1px solid rgba(244, 63, 94, 0.55);
  border-top: 1px solid rgba(255, 130, 160, 0.7);
  border-radius: 16px;
  background: rgba(26, 10, 28, 0.76);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 
    inset 0 1px 1.5px rgba(255, 255, 255, 0.25),
    0 8px 25px rgba(244, 63, 94, 0.25);
  transition: all 0.3s ease;
}

.notice:hover {
  border-color: rgba(244, 63, 94, 0.85);
  box-shadow: 
    inset 0 1px 2px rgba(255, 255, 255, 0.35),
    0 10px 30px rgba(244, 63, 94, 0.35);
}

.notice > b {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fb7185, #e11d48);
  color: #ffffff;
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 0 14px rgba(244, 63, 94, 0.7), inset 0 1px 2px #fff;
}

.notice strong {
  font-size: 15px;
  font-weight: 700;
  color: #fda4af;
  display: block;
  line-height: 1.35;
}

.notice p {
  margin: 6px 0 0;
  color: #f8fafc;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.6;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.95);
}

.notice em {
  color: #d8b4fe;
  font-style: normal;
  font-weight: 700;
}

/* Nút bấm CTA & Tải Về — Viên Pha Lê Thủy Tinh (Liquid Gem) */
.cta, .download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-top: 1.5px solid #ffffff;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(192, 132, 252, 0.9) 35%, rgba(34, 211, 238, 0.9) 80%, rgba(2, 132, 199, 0.95) 100%);
  color: #050818;
  text-decoration: none;
  font-weight: 800;
  border-radius: 14px;
  box-shadow: 
    inset 0 1.5px 2px #ffffff,
    0 8px 25px rgba(34, 211, 238, 0.4),
    0 0 18px rgba(168, 85, 247, 0.3);
  backdrop-filter: blur(10px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  min-height: 48px;
  cursor: pointer;
}

.cta {
  margin-top: 24px;
  padding: 12px 28px;
  font-size: 15px;
  letter-spacing: 0.3px;
}

.cta:hover, .download:not(.disabled):hover {
  transform: translateY(-2.5px);
  filter: brightness(1.1);
  box-shadow: 
    inset 0 2px 3px #ffffff,
    0 12px 35px rgba(34, 211, 238, 0.6),
    0 0 25px rgba(168, 85, 247, 0.5);
}

/* =========================================================
   TOOL GRID — THẺ BÀI LIQUID GLASS TRONG SUỐT
   ========================================================= */
.tools {
  position: relative;
  padding: 70px clamp(16px, 6vw, 100px);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
}

.section-head h2, .guide-title h1 {
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  margin: 6px 0 0;
  color: #ffffff;
  letter-spacing: -0.3px;
}

.count {
  color: var(--skirk-cyan-bright);
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  background: rgba(10, 16, 42, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.2);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* Thẻ Tool Liquid Glass Siêu Trong Suốt */
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 100%;
  min-height: 260px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-top: 1.5px solid rgba(255, 255, 255, 0.5);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(12, 18, 48, 0.68) 0%, rgba(6, 10, 30, 0.58) 100%);
  box-shadow: 
    inset 0 1.5px 2px rgba(255, 255, 255, 0.22),
    0 10px 30px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tool-card:hover {
  transform: translateY(-5px);
  background: linear-gradient(145deg, rgba(16, 24, 60, 0.26) 0%, rgba(8, 14, 38, 0.14) 100%);
  border-color: rgba(34, 211, 238, 0.65);
  border-top-color: #ffffff;
  box-shadow: 
    inset 0 1.5px 3px rgba(255, 255, 255, 0.4),
    0 18px 45px rgba(0, 0, 0, 0.35),
    0 0 30px rgba(34, 211, 238, 0.35);
}

.tool-card:after {
  content: '✦';
  position: absolute;
  right: -8px;
  top: -24px;
  font-size: 120px;
  color: rgba(255, 255, 255, 0.04);
  pointer-events: none;
  transition: color 0.3s ease;
}

.tool-card:hover:after {
  color: rgba(34, 211, 238, 0.1);
}

/* Icon App Genshin & Khối Chữ Cái */
.tool-app-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-top: 1.5px solid #ffffff;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.35), 0 6px 14px rgba(0, 0, 0, 0.45), inset 0 1px 1px #fff;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, box-shadow 0.25s ease;
  flex-shrink: 0;
  display: block;
  background: #0d1127;
}

.letter {
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-top: 1.5px solid #ffffff;
  color: #ffffff;
  background: linear-gradient(145deg, rgba(59, 20, 100, 0.7) 0%, rgba(12, 32, 68, 0.7) 100%);
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: 30px;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.35), inset 0 1px 2px rgba(255, 255, 255, 0.4);
  transition: transform 0.25s ease;
}

.tool-card:hover .tool-app-icon,
.tool-card:hover .letter {
  transform: scale(1.08);
  border-color: var(--skirk-cyan);
  box-shadow: 0 0 28px rgba(34, 211, 238, 0.6), 0 8px 20px rgba(0, 0, 0, 0.6);
}

.tool-copy {
  margin-top: 16px;
}

.tool-copy small {
  color: var(--skirk-cyan-bright);
  font-size: 10px;
  letter-spacing: 1.6px;
  font-weight: 700;
  text-transform: uppercase;
  text-shadow: 0 0 8px rgba(34, 211, 238, 0.4);
}

.tool-copy h3 {
  margin: 6px 0 8px;
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.95), 0 0 16px rgba(0, 0, 0, 0.9);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 10.5px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.2px;
  backdrop-filter: blur(10px);
}

.status-badge.updated {
  color: #67e8f9;
  background: rgba(34, 211, 238, 0.16);
  border: 1px solid rgba(34, 211, 238, 0.5);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.25);
}

.status-badge.maintenance {
  color: #fb7185;
  background: rgba(244, 63, 94, 0.16);
  border: 1px solid rgba(244, 63, 94, 0.55);
  box-shadow: 0 0 12px rgba(244, 63, 94, 0.25);
}

.tool-copy p {
  margin: 0;
  color: #f1f5f9;
  font-size: 13.5px;
  line-height: 1.5;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.95);
  font-weight: 500;
}

.download {
  width: 100%;
  padding: 12px;
  margin-top: 22px;
  border-radius: 14px;
  font-size: 14px;
  letter-spacing: 0.4px;
}

.disabled {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(15, 23, 42, 0.5);
  color: #64748b;
  box-shadow: none;
  cursor: not-allowed;
  filter: none !important;
  transform: none !important;
}

/* =========================================================
   TRANG HƯỚNG DẪN — LIQUID GLASS
   ========================================================= */
.guide-wrap {
  padding: 60px clamp(16px, 6vw, 100px);
}

.guide-title {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
  background: rgba(8, 14, 38, 0.16);
  backdrop-filter: blur(5px) saturate(130%);
  -webkit-backdrop-filter: blur(5px) saturate(130%);
  padding: 24px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-top: 1.5px solid rgba(255, 255, 255, 0.45);
  box-shadow: inset 0 1px 1.5px rgba(255, 255, 255, 0.22), 0 10px 30px rgba(0, 0, 0, 0.2);
}

.guide-title h1 {
  text-shadow: 0 3px 18px rgba(0, 0, 0, 0.95);
}

.guide-title p {
  color: #ffffff;
  margin-top: 10px;
  font-size: 15px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.95);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.guide-card {
  appearance: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  color: var(--skirk-silver);
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-top: 1.5px solid rgba(255, 255, 255, 0.45);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(12, 18, 48, 0.16) 0%, rgba(6, 10, 30, 0.08) 100%);
  display: grid;
  grid-template-columns: 60px 1fr 24px;
  gap: 16px;
  align-items: center;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: inset 0 1.5px 2px rgba(255, 255, 255, 0.2), 0 10px 30px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(4px) saturate(130%);
  -webkit-backdrop-filter: blur(4px) saturate(130%);
}

.guide-card:not(.locked):hover {
  transform: translateY(-4px);
  background: linear-gradient(145deg, rgba(16, 24, 60, 0.26) 0%, rgba(8, 14, 38, 0.14) 100%);
  border-color: var(--skirk-cyan);
  border-top-color: #ffffff;
  box-shadow: 
    inset 0 1.5px 2.5px rgba(255, 255, 255, 0.4),
    0 16px 38px rgba(0, 0, 0, 0.4),
    0 0 28px rgba(34, 211, 238, 0.35);
}

.guide-card .letter,
.guide-card .tool-app-icon {
  grid-row: span 2;
}

.guide-card small, .guide-card strong, .guide-card em {
  display: block;
}

.guide-card small {
  font-size: 10px;
  color: var(--skirk-cyan-bright);
  letter-spacing: 1.2px;
  font-weight: 700;
  text-transform: uppercase;
}

.guide-card strong {
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: 20px;
  font-weight: 700;
  margin: 3px 0;
  line-height: 1.25;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.95);
}

.guide-card em {
  font-style: normal;
  color: #e2e8f0;
  font-size: 12.5px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.95);
}

.guide-card > b {
  color: var(--skirk-lavender);
  font-size: 18px;
  text-align: right;
  transition: transform 0.2s ease, color 0.2s ease;
}

.guide-card:not(.locked):hover > b {
  color: var(--skirk-cyan-bright);
  transform: translateX(3px);
}

.locked {
  opacity: 0.45;
  cursor: not-allowed;
  border-color: rgba(255, 255, 255, 0.08);
}

/* Khung Video YouTube Liquid Glass */
.video-panel {
  margin-top: 40px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-top: 1.5px solid rgba(255, 255, 255, 0.45);
  border-radius: 24px;
  background: rgba(8, 12, 32, 0.2);
  backdrop-filter: blur(6px) saturate(140%);
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  box-shadow: 
    inset 0 1.5px 2px rgba(255, 255, 255, 0.25),
    0 20px 50px rgba(0, 0, 0, 0.45),
    0 0 35px rgba(168, 85, 247, 0.2);
}

.video-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  gap: 14px;
}

.video-head h2 {
  margin: 4px 0 0;
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  color: #ffffff;
}

.video-head button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  color: var(--skirk-silver);
  font-size: 24px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.3);
}

.video-head button:hover {
  background: rgba(244, 63, 94, 0.3);
  border-color: var(--skirk-crimson);
  color: #fff;
  transform: rotate(90deg);
}

.video-frame {
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: #000;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.85);
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* =========================================================
   FOOTER LIQUID GLASS
   ========================================================= */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 28px clamp(16px, 6vw, 100px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: #ffffff;
  font-size: 13px;
  text-align: center;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.9);
  background: rgba(5, 7, 22, 0.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

footer b {
  color: var(--skirk-silver);
}



/* =========================================================
   TRANG CÔNG CỤ HỖ TRỢ — LIQUID GLASS
   ========================================================= */
.utilities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  max-width: 960px;
  margin: 0 auto 36px;
}

.utility-card {
  min-height: 280px;
}

.utility-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 8px;
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: #67e8f9;
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.15);
  letter-spacing: 0.2px;
}

/* Khung lời khuyên / Mẹo hỗ trợ */
.utility-tips-panel {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 28px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-top: 1.5px solid rgba(255, 255, 255, 0.45);
  background: rgba(8, 14, 38, 0.18);
  backdrop-filter: blur(5px) saturate(130%);
  -webkit-backdrop-filter: blur(5px) saturate(130%);
  box-shadow: inset 0 1px 1.5px rgba(255, 255, 255, 0.22), 0 12px 35px rgba(2, 4, 18, 0.2);
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.tip-icon {
  font-size: 32px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.3);
}

.tip-content {
  flex: 1;
  min-width: 260px;
}

.tip-content h3 {
  margin: 0 0 6px;
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.95);
}

.tip-content p {
  margin: 6px 0;
  font-size: 13.5px;
  color: #f1f5f9;
  line-height: 1.55;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.95);
}

.tip-content strong {
  color: var(--skirk-cyan-bright);
}

.tip-action-btn {
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid rgba(34, 211, 238, 0.4);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: all 0.25s ease;
  box-shadow: 0 0 15px rgba(34, 211, 238, 0.2);
}

.tip-action-btn:hover {
  background: rgba(34, 211, 238, 0.3);
  border-color: var(--skirk-cyan-bright);
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(34, 211, 238, 0.4);
}

/* Banner chuyển tab Công Cụ trên Trang Chủ */
.tools-cta-banner {
  margin-top: 36px;
  padding: 22px 28px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-top: 1.5px solid rgba(255, 255, 255, 0.45);
  background: linear-gradient(135deg, rgba(16, 24, 64, 0.22) 0%, rgba(8, 12, 36, 0.14) 100%);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  box-shadow: inset 0 1px 1.5px rgba(255, 255, 255, 0.2), 0 10px 30px rgba(0, 0, 0, 0.25);
}

.banner-text .badge-mini {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--skirk-cyan-bright);
  font-weight: 700;
  margin-bottom: 4px;
}

.banner-text strong {
  display: block;
  font-size: 18px;
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.95);
}

.banner-text p {
  margin: 4px 0 0;
  font-size: 13px;
  color: #e2e8f0;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.95);
}

.banner-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 12px;
  text-decoration: none;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.3) 0%, rgba(34, 211, 238, 0.3) 100%);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-top: 1px solid #ffffff;
  color: #ffffff;
  font-size: 13.5px;
  font-weight: 700;
  white-space: nowrap;
  transition: all 0.25s ease;
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
}

.banner-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.15);
  box-shadow: 0 0 25px rgba(34, 211, 238, 0.5);
}

/* =========================================================
   TÙY CHỈNH GIAO DIỆN ĐA THIẾT BỊ (RESPONSIVE SYSTEM)
   ========================================================= */

/* 1. MÀN HÌNH LAPTOP & TABLET NGANG (993px - 1200px) */
@media (max-width: 1200px) {
  .skirk-bg-fixed {
    background-position: 72% center;
  }
  .tool-grid, .guide-grid {
    gap: 20px;
  }
}

/* 2. TABLET ĐỨNG & LAPTOP NHỎ (769px - 992px) */
@media (max-width: 992px) {
  .skirk-bg-fixed {
    background-position: 65% center;
  }
  .tool-grid, .guide-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .hero {
    padding: 60px clamp(16px, 4vw, 40px);
  }
}

/* 3. ĐIỆN THOẠI & TABLET NHỎ (<= 768px) */
@media (max-width: 768px) {
  /* Ảnh nền đứng Skirk trời sao mặt nước chuyên biệt cho điện thoại */
  .skirk-bg-fixed {
    background-image: url('skirk-mobile-bg.jpg');
    background-position: center top;
    background-size: cover;
  }

  .skirk-bg-overlay {
    background: 
      radial-gradient(ellipse at 50% 30%, transparent 0%, rgba(5, 7, 24, 0.04) 60%, rgba(4, 6, 20, 0.18) 100%),
      linear-gradient(180deg, rgba(5, 7, 20, 0.02) 0%, rgba(5, 7, 20, 0.06) 50%, rgba(4, 6, 20, 0.16) 100%);
  }

  /* Header 2 hàng tối ưu cho Mobile */
  .nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    gap: 8px;
  }

  .brand { 
    flex: initial; 
  }
  .brand strong { font-size: 18px; }
  .brand small { font-size: 9.5px; }
  .primogem { width: 42px; height: 42px; }

  .socials { 
    flex: initial; 
    flex-direction: row;
    gap: 6px;
  }
  .social {
    width: auto;
    padding: 5px 10px;
    font-size: 11px;
    border-radius: 8px;
    background: rgba(10, 16, 40, 0.28);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }

  /* Menu chuyển xuống hàng 2, căn giữa và trượt mượt trên Mobile */
  .main-nav {
    width: 100%;
    order: 3;
    margin-top: 4px;
    gap: 6px;
    justify-content: flex-start;
    background: rgba(10, 16, 42, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 4px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav::-webkit-scrollbar {
    display: none;
  }

  .main-nav a {
    flex: 1 0 auto;
    text-align: center;
    padding: 7px 10px;
    font-size: 12.5px;
    border-radius: 10px;
  }

  /* Hero Banner trên điện thoại */
  .hero { 
    padding: 35px 14px; 
    min-height: auto;
  }

  .hero-content {
    padding: 20px 16px;
    border-radius: 20px;
    background: rgba(7, 12, 34, 0.18);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
  }

  .stars { display: none; }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  /* Lưới công cụ 1 cột toàn màn hình */
  .tools {
    padding: 40px 14px;
  }

  .tool-grid, .guide-grid, .utilities-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .tool-card {
    min-height: auto;
    padding: 20px 18px;
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(12, 18, 48, 0.18) 0%, rgba(6, 10, 30, 0.1) 100%);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }

  .cta, .download { 
    width: 100%; 
    min-height: 48px;
  }

  .guide-card .letter,
  .guide-card .tool-app-icon {
    width: 52px;
    height: 52px;
    font-size: 26px;
    border-radius: 14px;
  }

  .tool-app-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
  }

  /* Trang hướng dẫn trên mobile */
  .guide-wrap {
    padding: 35px 14px;
  }

  .guide-card {
    grid-template-columns: 52px 1fr 20px;
    padding: 16px;
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(12, 18, 48, 0.18) 0%, rgba(6, 10, 30, 0.1) 100%);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }

  .video-panel { 
    padding: 16px; 
    margin-top: 25px;
    border-radius: 20px;
    background: rgba(8, 12, 32, 0.2);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
  }

  /* Banner & Tips Panel trên mobile */
  .utility-tips-panel {
    padding: 18px 16px;
    gap: 14px;
  }

  .tip-icon {
    width: 44px;
    height: 44px;
    font-size: 24px;
  }

  .tip-content h3 {
    font-size: 18px;
  }

  .tip-action-btn, .banner-btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .tools-cta-banner {
    padding: 18px 16px;
    margin-top: 24px;
  }
}

/* 4. ĐIỆN THOẠI MÀN HÌNH NHỎ (<= 480px) */
@media (max-width: 480px) {
  .brand strong { font-size: 16px; }
  .brand small { font-size: 8.5px; }
  .primogem { width: 36px; height: 36px; }

  .social {
    padding: 4px 8px;
    font-size: 10px;
  }

  .main-nav a {
    font-size: 11.5px;
    padding: 6px 6px;
  }

  .hero h1 { 
    font-size: 32px; 
    margin: 10px 0 16px;
  }

  .notice {
    padding: 12px 14px;
    gap: 10px;
  }

  .notice > b {
    width: 24px;
    height: 24px;
    min-width: 24px;
    font-size: 13px;
  }

  .notice strong { font-size: 13px; }
  .notice p { font-size: 12px; }

  .tool-copy h3 {
    font-size: 20px;
  }

  .guide-title h1 {
    font-size: 28px;
  }

  footer {
    padding: 22px 14px;
    font-size: 11.5px;
    gap: 8px;
  }
}

/* 5. ĐIỆN THOẠI MÀN HÌNH CỰC NHỎ HOẶC MÀN GẬP (<= 360px) */
@media (max-width: 360px) {
  .nav { padding: 8px 10px; }
  .hero h1 { font-size: 28px; }
  .main-nav a span { display: inline-block; }
  .guide-card strong { font-size: 18px; }
}

/* =========================================================
   BẢNG THÔNG BÁO POPUP — CẢNH BÁO RỦI RO & BAN WAVE
   ========================================================= */
.tx-notice-overlay {
  position: fixed;
  inset: 0;
  z-index: 999999;
  background: rgba(3, 6, 20, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.32s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.tx-notice-overlay.active {
  opacity: 1;
  visibility: visible;
}

.tx-notice-modal {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: linear-gradient(165deg, rgba(13, 18, 48, 0.95) 0%, rgba(6, 9, 28, 0.98) 100%);
  border-radius: 22px;
  border: 1px solid rgba(244, 63, 94, 0.36);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 
    0 0 50px rgba(244, 63, 94, 0.16),
    0 24px 60px rgba(0, 0, 0, 0.75),
    inset 0 1.5px 2px rgba(255, 255, 255, 0.2);
  padding: 28px 24px 22px;
  transform: scale(0.92) translateY(14px);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.tx-notice-overlay.active .tx-notice-modal {
  transform: scale(1) translateY(0);
}

/* Ánh sáng trang trí nền modal */
.tx-notice-modal::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.2) 0%, rgba(168, 85, 247, 0.12) 50%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.tx-notice-modal > * {
  position: relative;
  z-index: 1;
}

/* Nút X đóng góc trên */
.tx-notice-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: var(--skirk-muted);
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 2;
}

.tx-notice-close:hover {
  background: rgba(244, 63, 94, 0.22);
  border-color: rgba(244, 63, 94, 0.5);
  color: #fff;
  transform: rotate(90deg);
}

/* Badge cảnh báo */
.tx-notice-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(244, 63, 94, 0.14);
  border: 1px solid rgba(244, 63, 94, 0.42);
  margin-bottom: 12px;
}

.tx-notice-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #f43f5e;
  box-shadow: 0 0 10px #f43f5e;
  animation: txPulseAnim 1.6s infinite;
}

@keyframes txPulseAnim {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.75); }
}

.tx-notice-badge-text {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  color: #fda4af;
  text-transform: uppercase;
}

/* Tiêu đề */
.tx-notice-title {
  font-family: 'Space Grotesk', 'Be Vietnam Pro', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 14px;
  line-height: 1.3;
}

/* Hộp lưu ý đỏ nổi bật */
.tx-notice-warning-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.14) 0%, rgba(168, 85, 247, 0.08) 100%);
  border: 1px solid rgba(244, 63, 94, 0.35);
  border-left: 4px solid #f43f5e;
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 14px;
}

.tx-notice-warn-icon {
  font-size: 20px;
  line-height: 1;
  color: #fb7185;
  margin-top: 1px;
  flex-shrink: 0;
}

.tx-notice-warn-text strong {
  color: #ff8597;
  font-size: 14px;
  display: block;
  margin-bottom: 3px;
}

.tx-notice-warn-text p {
  margin: 0;
  font-size: 13px;
  color: #e2e8f0;
  line-height: 1.45;
}

.tx-notice-desc {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.5;
  margin: 0 0 16px;
}

/* Thẻ MXH Discord & Telegram */
.tx-notice-socials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 22px;
}

.tx-social-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 14px;
  border-radius: 12px;
  background: rgba(18, 25, 60, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-decoration: none;
  transition: all 0.25s ease;
}

.tx-social-card.discord:hover {
  background: rgba(88, 101, 242, 0.2);
  border-color: #5865F2;
  box-shadow: 0 4px 18px rgba(88, 101, 242, 0.35);
  transform: translateY(-2px);
}

.tx-social-card.telegram:hover {
  background: rgba(34, 158, 217, 0.2);
  border-color: #229ED9;
  box-shadow: 0 4px 18px rgba(34, 158, 217, 0.35);
  transform: translateY(-2px);
}

.tx-social-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.tx-social-card:hover .tx-social-icon {
  transform: scale(1.08);
}

.tx-social-icon.discord-icon {
  background: rgba(88, 101, 242, 0.22);
  color: #7289da;
}

.tx-social-icon.telegram-icon {
  background: rgba(34, 158, 217, 0.22);
  color: #38bdf8;
}

.tx-social-title {
  font-size: 13.5px;
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* Các nút hành động */
.tx-notice-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.tx-btn-snooze {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #cbd5e1;
  font-family: inherit;
  font-weight: 600;
  font-size: 13px;
  border-radius: 11px;
  padding: 11px 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tx-btn-snooze:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

.tx-btn-dismiss {
  flex: 1.15;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: linear-gradient(135deg, #f43f5e 0%, #a855f7 100%);
  border: none;
  color: #ffffff;
  font-family: inherit;
  font-weight: 700;
  font-size: 13.5px;
  border-radius: 11px;
  padding: 11px 18px;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(244, 63, 94, 0.36);
  transition: all 0.2s ease;
}

.tx-btn-dismiss:hover {
  box-shadow: 0 6px 24px rgba(244, 63, 94, 0.58);
  transform: translateY(-1.5px);
  filter: brightness(1.08);
}

.tx-btn-icon {
  font-size: 14px;
}

/* Toast thông báo khi tắt 60 phút */
.tx-notice-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  background: rgba(14, 20, 48, 0.94);
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-radius: 999px;
  color: #e2e8f0;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000000;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tx-notice-toast.active {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Nút footer mở lại thông báo */
.footer-notice-btn {
  background: transparent;
  border: none;
  color: #fb7185;
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  font-weight: 600;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s, text-shadow 0.2s;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-notice-btn:hover {
  color: #fda4af;
  text-shadow: 0 0 10px rgba(244, 63, 94, 0.6);
}

@media (max-width: 480px) {
  .tx-notice-modal {
    padding: 22px 18px 18px;
  }
  .tx-notice-title {
    font-size: 19px;
  }
  .tx-notice-socials {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .tx-notice-actions {
    flex-direction: column-reverse;
  }
  .tx-btn-snooze, .tx-btn-dismiss {
    width: 100%;
    padding: 10px 14px;
  }
}

/* =========================================================
   HIỆU ỨNG BÔNG TUYẾT & TINH THỂ BĂNG (SNOW CANVAS)
   ========================================================= */
.snow-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 90;
  display: block;
}

.footer-snow-btn {
  background: transparent;
  border: none;
  color: #38bdf8;
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  font-weight: 600;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-snow-btn:hover {
  color: #ffffff;
  text-shadow: 0 0 10px rgba(56, 189, 248, 0.8);
}

.footer-snow-btn.active {
  color: #67e8f9;
}