/* ==========================================
   DESIGN TOKENS & VARIABLES
   ========================================== */
:root {
  /* Bảng màu đại dương cao cấp */
  --color-primary-dark: #0D1F2D;    /* Xanh navy biển sâu thẳm cực tối */
  --color-primary-medium: #142D40;  /* Xanh navy biển sâu chính */
  --color-primary-light: #244A63;   /* Xanh navy trung gian */
  --color-accent-teal: #A1262D;     /* Xanh ngọc teal đại dương */
  --color-accent-blue: #D34B52;     /* Xanh dương tươi sống */
  --color-accent-gold: #D5A34A;     /* Vàng cát ấm áp / Gold ánh kim */
  
  /* Màu nền */
  --color-bg-light: #F4F7F9;        /* Xám xanh rất nhẹ */
  --color-bg-white: #FFFFFF;
  
  /* Màu chữ */
  --color-text-dark: #1E293B;       /* Xám Slate tối */
  --color-text-muted: #64748B;      /* Xám Slate nhạt */
  --color-text-light: #F1F5F9;      /* Off-white */
  
  /* Typography */
  --font-family-headings: 'Aptos Display', 'Segoe UI', Arial, sans-serif;
  --font-family-body: 'Aptos', 'Segoe UI', Arial, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-xxl: 4.5rem;
  
  /* Bo góc */
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-full: 9999px;
  
  /* Bóng đổ */
  --shadow-sm: 0 2px 4px rgba(7, 19, 48, 0.05);
  --shadow-md: 0 8px 16px rgba(7, 19, 48, 0.08);
  --shadow-lg: 0 16px 32px rgba(7, 19, 48, 0.12);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-bg-dark: rgba(13, 31, 45, 0.93);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-backdrop: blur(16px);
  
  /* Tốc độ hiệu ứng */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Max width container */
  --container-max-width: 1280px;
}

/* ==========================================
   CSS RESET & BASE STYLES
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family-body);
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-headings);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary-dark);
}

h1 { font-size: 2.8rem; font-weight: 800; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.6rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.4rem; }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

/* Scroll reveal initial states */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}


/* ==========================================
   CLIENT / PARTNER TRUST STRIP
   ========================================== */
.client-trust-section {
  background: #fff;
  border-bottom: 1px solid rgba(13,31,45,.08);
  padding: 44px 0 48px;
}
.client-trust-head {
  display: grid;
  grid-template-columns: minmax(260px, .9fr) minmax(320px, 1.2fr);
  gap: 18px 48px;
  align-items: end;
  margin-bottom: 24px;
}
.client-trust-head .section-subtitle {
  grid-column: 1 / -1;
  margin-bottom: -4px;
}
.client-trust-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  color: var(--color-primary-dark);
}
.client-trust-head p {
  color: var(--color-text-muted);
  max-width: 720px;
}
.client-brand-rail {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.client-brand-card {
  min-height: 94px;
  padding: 18px 16px;
  border: 1px solid rgba(13,31,45,.11);
  border-radius: 14px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 22px rgba(13,31,45,.045);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.client-brand-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(13,31,45,.09);
  border-color: rgba(161,38,45,.25);
}
.client-brand-card span {
  font-weight: 800;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  letter-spacing: .01em;
  color: #334155;
  text-align: center;
}
.brand-aeon span { color: #a51f60; letter-spacing: .06em; }
.brand-homefarm span { color: #2f7c47; }
.brand-winmart span { color: #b5232d; }
.brand-kiwi span { color: #487a3a; }
.brand-minhphu span { color: #174d7c; letter-spacing: .05em; }

@media (max-width: 900px) {
  .client-trust-head { grid-template-columns: 1fr; gap: 10px; }
  .client-brand-rail { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .client-trust-section { padding: 34px 0 38px; }
  .client-brand-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .client-brand-card { min-height: 78px; }
}