/* ==========================================================================
   VP PRELOADER ANIMATION (STARTUP SCREEN) · VINH PHÁT TP.HCM
   ========================================================================== */
:root {
  --vp-green-deep: #0d3a22;
  --vp-green-main: #008848;
  --vp-gold-accent: #c9a227;
  --vp-gold-light: #f0c000;
}

/* CHỐNG LOAD NGƯỢC (FOUC GUARD): Phủ màn xanh ngay khoảnh khắc HTML vừa mở <body>,
   trước khi bất kỳ nội dung nào kịp được vẽ. Inline script nhỏ đặt đầu body thêm
   class "vp-prelock" này; vp-preloader.js sẽ gỡ class ngay khi loader đã sẵn sàng
   (cùng màu nền #0d3a22 nên cảm giác chuyển tiếp liên tục, không chớp). */
/* Đã vô hiệu hóa vp-prelock body::before để loại bỏ triệt để hiện tượng đứng màn hình xanh khi tải trang */
html.vp-prelock body::before {
  display: none !important;
}

#vp-page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999999;
  background: #0d3a22;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
  overflow: hidden;
}

#vp-page-loader.is-loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

/* Hiệu ứng TỎA RA (Expanding Radial Mask Reveal) mở rộng từ tâm Logo ra toàn màn hình */
#vp-page-loader.burst-out {
  animation: vpExpandingBurst 0.95s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: none;
}

@keyframes vpExpandingBurst {
  0% {
    -webkit-mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 0%, #000 0%);
    mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 0%, #000 0%);
    opacity: 1;
  }
  30% {
    -webkit-mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 24%, #000 46%);
    mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 24%, #000 46%);
    opacity: 0.94;
  }
  55% {
    -webkit-mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 58%, #000 80%);
    mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 58%, #000 80%);
    opacity: 0.78;
  }
  80% {
    -webkit-mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 95%, #000 125%);
    mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 95%, #000 125%);
    opacity: 0.25;
  }
  100% {
    -webkit-mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 150%, #000 180%);
    mask-image: radial-gradient(circle at var(--burst-x, 50%) var(--burst-y, 50%), transparent 150%, #000 180%);
    opacity: 0;
    visibility: hidden;
  }
}

.vp-loader-glow-aura {
  position: absolute;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.12) 0%, rgba(0, 136, 72, 0.05) 50%, transparent 70%);
  pointer-events: none;
  animation: vpAuraPulse 3.5s infinite ease-in-out;
}

.vp-loader-box {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
  z-index: 2;
  transition: opacity 0.25s ease;
}

.vp-loader-icon-frame {
  position: relative;
  width: 108px;
  height: 108px;
  display: grid;
  place-items: center;
}

.vp-loader-icon-frame img, .vp-loader-img {
  width: 108px;
  height: 108px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.45));
}

.vp-loader-brand {
  color: #f0c000;
  font-family: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  text-shadow: 0 3px 10px rgba(0, 0, 0, 0.4);
}

.vp-loader-sub {
  color: rgba(255, 255, 255, 0.9);
  font-family: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-top: -10px;
}

.vp-loader-bar {
  width: 150px;
  height: 3.5px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 4px;
}

.vp-loader-progress {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #c9a227, #f0c000, #c9a227);
  animation: vp-loader-slide 1.2s infinite ease-in-out;
}

@keyframes vp-loader-slide {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(0%); }
  100% { transform: translateX(100%); }
}

@keyframes vpAuraPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.12); opacity: 0.8; }
}

/* ==========================================================================
   CINEMATIC FLYING GEAR (CHỈ LẤY RĂNG CƯA VÀNG BAY LÊN THEO Ý USER)
   ========================================================================== */
#vp-flying-icon {
  position: fixed;
  z-index: 10000001;
  pointer-events: none;
  display: none;
  transform-origin: center center;
}

.flying-gear-spin {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 16px rgba(240, 191, 0, 0.45));
  animation: vpGearFlyingRotate 0.65s linear infinite;
}

@keyframes vpGearFlyingRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Vòng sóng năng lượng hoàng kim lan tỏa (Mờ nhẹ nhàng, thanh thoát) */
.vp-shockwave-ring {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(240, 192, 0, 0.14) 0%, rgba(201, 162, 39, 0.04) 40%, transparent 70%);
  border: 1px solid rgba(240, 192, 0, 0.22);
  box-shadow: 0 0 20px rgba(240, 192, 0, 0.15);
  opacity: 0.55;
  transform: translate(-50%, -50%) scale(0.1);
  filter: blur(0px);
  z-index: 10000000;
}

/* Sóng đuổi: mỏng hơn, bắn sau, giãn nhanh rồi tan mịn */
.vp-shockwave-ring.vp-shockwave-echo {
  border-width: 2px;
  border-color: rgba(255, 244, 190, 0.55);
  box-shadow: 0 0 14px rgba(240, 192, 0, 0.28);
  background: none;
  opacity: 0.85;
}

@keyframes vpShockwaveBloom {
  0% {
    transform: translate(-50%, -50%) scale(0.1);
    opacity: 0.55;
    border-color: rgba(240, 192, 0, 0.28);
    filter: blur(0px);
  }
  42% {
    transform: translate(-50%, -50%) scale(5);
    opacity: 0.5;
    border-color: rgba(240, 192, 0, 0.32);
  }
  62% {
    transform: translate(-50%, -50%) scale(7.5);
    opacity: 0.38;
    filter: blur(2px);
  }
  100% {
    transform: translate(-50%, -50%) scale(9.5);
    opacity: 0;
    border-color: transparent;
    filter: blur(7px);
  }
}

@keyframes vpShockwaveEcho {
  0% {
    transform: translate(-50%, -50%) scale(0.2);
    opacity: 0.85;
    filter: blur(0px);
  }
  55% {
    opacity: 0.4;
  }
  100% {
    transform: translate(-50%, -50%) scale(12);
    opacity: 0;
    filter: blur(5px);
  }
}

/* Chạy chữ từ từ ra trên mobile (Typewriter / Reveal từ sau icon xe cuốc) */
.vp-logo-mobile.anim-typing {
  animation: vpMobileLogoReveal 0.85s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes vpMobileLogoReveal {
  0% {
    clip-path: inset(0 68% 0 0);
    opacity: 0.85;
  }
  25% {
    opacity: 1;
  }
  100% {
    clip-path: inset(0 0% 0 0);
    opacity: 1;
  }
}

/* ==========================================================================
   HIỆU ỨNG TỎA RA HIỆN DẦN NỘI DUNG (STAGGER CASCADE REVEAL)
   ========================================================================== */
#masthead .header-nav,
.tl-hero-banner .tl-eyebrow,
.tl-hero-banner .hero-h1,
.tl-hero-banner .tl-desc,
.tl-hero-banner .tl-cta,
.tl-hero-banner .tl-trust li,
.page-header,
.entry-header {
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform, filter;
}

body.vp-is-loading #masthead .header-nav {
  opacity: 0;
  transform: translateY(-8px);
}
body.vp-is-loading .tl-hero-banner .tl-eyebrow {
  opacity: 0;
  transform: translateY(14px);
  filter: blur(4px);
}
body.vp-is-loading .tl-hero-banner .hero-h1 {
  opacity: 0;
  transform: translateY(22px);
  filter: blur(6px);
}
body.vp-is-loading .tl-hero-banner .tl-desc {
  opacity: 0;
  transform: translateY(18px);
  filter: blur(4px);
}
body.vp-is-loading .tl-hero-banner .tl-cta {
  opacity: 0;
  transform: translateY(18px);
  filter: blur(4px);
}
body.vp-is-loading .tl-hero-banner .tl-trust li {
  opacity: 0;
  transform: translateY(22px) scale(0.97);
  filter: blur(4px);
}
body.vp-is-loading .page-header,
body.vp-is-loading .entry-header {
  opacity: 0;
  transform: translateY(16px);
}

body.vp-is-revealed #masthead .header-nav {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.12s;
}
body.vp-is-revealed .tl-hero-banner .tl-eyebrow {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  transition-delay: 0.18s;
}
body.vp-is-revealed .tl-hero-banner .hero-h1 {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  transition-delay: 0.28s;
}
body.vp-is-revealed .tl-hero-banner .tl-desc {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  transition-delay: 0.4s;
}
body.vp-is-revealed .tl-hero-banner .tl-cta {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  transition-delay: 0.5s;
}

body.vp-is-revealed .tl-hero-banner .tl-trust li:nth-child(1) {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition-delay: 0.58s;
}
body.vp-is-revealed .tl-hero-banner .tl-trust li:nth-child(2) {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition-delay: 0.66s;
}
body.vp-is-revealed .tl-hero-banner .tl-trust li:nth-child(3) {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition-delay: 0.74s;
}
body.vp-is-revealed .tl-hero-banner .tl-trust li:nth-child(4) {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition-delay: 0.82s;
}
body.vp-is-revealed .page-header,
body.vp-is-revealed .entry-header {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.25s;
}