/* ============================================================
   PACKPRIME — Premium Promotional Packaging Solutions
   Complete Design System — Lightweight, No Dependencies
   ============================================================ */

/* --- CSS Variables (Design Tokens) --- */
:root {
  /* Colors */
  --color-primary:        #0066A1;
  --color-primary-dark:   #004D7A;
  --color-primary-light:  #E6F2F8;
  --color-secondary:      #3DA5D9;
  --color-secondary-light:#EBF5FA;
  --color-accent:         #F5A623;
  --color-accent-dark:    #D4891A;

  /* Neutrals */
  --color-white:          #FFFFFF;
  --color-bg:             #F8F9FA;
  --color-bg-alt:         #EDF1F5;
  --color-border:         #DDE2E8;
  --color-text:           #1A1A2E;
  --color-text-light:     #5A6270;
  --color-text-muted:     #88909E;

  /* Typography */
  --font-sans:            -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs:         0.75rem;
  --font-size-sm:         0.875rem;
  --font-size-base:       1rem;
  --font-size-lg:         1.125rem;
  --font-size-xl:         1.25rem;
  --font-size-2xl:        1.5rem;
  --font-size-3xl:        1.875rem;
  --font-size-4xl:        2.25rem;
  --font-size-5xl:        3rem;

  /* Spacing */
  --space-xs:    0.5rem;
  --space-sm:    1rem;
  --space-md:    1.5rem;
  --space-lg:    2rem;
  --space-xl:    3rem;
  --space-2xl:   4rem;
  --space-3xl:   6rem;

  /* Layout */
  --max-width:   1200px;
  --max-width-sm:800px;
  --radius-sm:   4px;
  --radius:      8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow:      0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg:   0 8px 30px rgba(0,0,0,0.12);
  --transition:  0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-text); }
h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }

p { margin-bottom: var(--space-sm); }
.text-center { text-align: center; }
.text-muted  { color: var(--color-text-light); }
.text-small  { font-size: var(--font-size-sm); }
.lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
.container-sm {
  max-width: var(--max-width-sm);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
.section { padding: var(--space-3xl) 0; }
.section-sm { padding: var(--space-2xl) 0; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}
.btn-white:hover {
  background: transparent;
  color: var(--color-white);
}
.btn-lg { padding: 16px 36px; font-size: var(--font-size-lg); }
.btn-sm { padding: 8px 20px; font-size: var(--font-size-sm); }

/* --- Header / Navigation --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 70px;
}
.logo { flex-shrink: 0; text-decoration: none; }
.logo img { width: 150px; height: auto; }
.logo-text { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px; }
.logo-pack { color: var(--color-primary); }
.logo-prime { color: var(--color-secondary); }

/* Language Switcher */
.header-actions { display: flex; align-items: center; gap: var(--space-sm); }
.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-text);
  font-size: var(--font-size-xs);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
}
.lang-switch:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav { display: flex; align-items: center; gap: var(--space-xs); }
.nav a {
  display: block;
  padding: 8px 16px;
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav a:hover,
.nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 85vh;
  padding: var(--space-3xl) 0;
  background: linear-gradient(135deg, #001F33 0%, #003D66 40%, #0066A1 100%);
  color: var(--color-white);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/><circle cx="900" cy="150" r="300" fill="rgba(61,165,217,0.08)"/><circle cx="200" cy="600" r="250" fill="rgba(0,102,161,0.15)"/></svg>');
  background-size: cover;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 700px; }
.hero h1 {
  font-size: clamp(2rem, 5vw, var(--font-size-5xl));
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.15;
}
.hero .lead {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--space-xl);
  max-width: 560px;
}
.hero-buttons { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

/* --- Section Headers --- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.section-header h2 {
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}
.section-header p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--color-text-light);
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  background: var(--color-bg);
}
.card-body { padding: var(--space-md); }
.card-body h4 { margin-bottom: var(--space-xs); font-size: var(--font-size-lg); }
.card-body p { color: var(--color-text-light); font-size: var(--font-size-sm); margin: 0; }

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

/* Industry cards — icon style */
.card-icon {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
}
.card-icon .icon-circle {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-sm);
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-icon .icon-circle svg { width: 32px; height: 32px; stroke: var(--color-primary); }
.card-icon h4 { margin-bottom: var(--space-xs); }

/* --- Feature Boxes --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.feature-box {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}
.feature-box .icon-circle {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-sm);
  background: var(--color-secondary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-box .icon-circle svg { width: 28px; height: 28px; stroke: var(--color-primary); }
.feature-box h4 { margin-bottom: var(--space-xs); }

/* --- Process Steps --- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  position: relative;
}
.process-step {
  text-align: center;
  position: relative;
}
.process-step::after {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(50% + 40px);
  width: calc(100% - 80px);
  height: 2px;
  background: var(--color-border);
}
.process-step:last-child::after { display: none; }
.step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-sm);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  position: relative;
  z-index: 2;
}
.process-step h4 { margin-bottom: var(--space-xs); }

/* --- Stats / Numbers Row --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.stat-item {
  text-align: center;
  padding: var(--space-xl);
}
.stat-number {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}
.stat-label { color: var(--color-text-light); font-weight: 600; }

/* --- Two Column Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}
.two-col-reverse { direction: rtl; }
.two-col-reverse > * { direction: ltr; }

/* --- CTA Section --- */
.cta-section {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
}
.cta-section h2 { color: var(--color-white); }
.cta-section .lead { color: rgba(255,255,255,0.85); }
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

/* --- Form --- */
.form-group { margin-bottom: var(--space-md); }
.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: var(--font-size-sm);
}
.form-required { color: #E74C3C; }
.form-input,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-textarea { resize: vertical; min-height: 120px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.form-submit { text-align: right; }

.form-success {
  display: none;
  padding: var(--space-md);
  background: #D4EDDA;
  border: 1px solid #C3E6CB;
  border-radius: var(--radius);
  color: #155724;
  text-align: center;
  margin-top: var(--space-md);
}

/* --- Brand Grid (logo wall) --- */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}
.brand-item {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.brand-item:hover { background: var(--color-primary-light); }
.brand-item img { width: 80px; height: 80px; margin: 0 auto var(--space-xs); border-radius: 50%; object-fit: cover; background: var(--color-white); }
.brand-item p { font-size: var(--font-size-xs); color: var(--color-text-muted); margin: 0; }

/* --- Footer --- */
.footer {
  background: #001F33;
  color: rgba(255,255,255,0.7);
  padding: var(--space-2xl) 0 var(--space-md);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--space-md);
}
.footer a { color: rgba(255,255,255,0.7); }
.footer a:hover { color: var(--color-white); }
.footer-copy { font-size: var(--font-size-sm); }

/* --- Page Banner (inner pages) --- */
.page-banner {
  position: relative;
  padding: var(--space-3xl) 0;
  background: linear-gradient(135deg, #001F33 0%, #003D66 100%);
  color: var(--color-white);
  text-align: center;
}
.page-banner h1 { color: var(--color-white); margin-bottom: var(--space-sm); }
.page-banner p { color: rgba(255,255,255,0.8); font-size: var(--font-size-lg); }

/* --- Background variants --- */
.bg-light { background: var(--color-bg); }
.bg-alt { background: var(--color-bg-alt); }

/* --- Shape divider --- */
.shape-divider {
  position: absolute;
  left: 0;
  right: 0;
  overflow: hidden;
  line-height: 0;
}
.shape-divider-top { top: -1px; }
.shape-divider-bottom { bottom: -1px; }
.shape-divider svg { width: 100%; height: 60px; }

/* --- PDF / Catalog embed --- */
.catalog-frame {
  width: 100%;
  height: 700px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
}

/* --- Vision/Mission cards --- */
.vm-card {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  border-top: 4px solid var(--color-primary);
  box-shadow: var(--shadow);
}
.vm-card .vm-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-sm);
  background: var(--color-primary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.vm-card .vm-icon svg { width: 24px; height: 24px; stroke: var(--color-primary); }

/* --- Product grid on products page --- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols, 4), 1fr);
  gap: var(--space-md);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .card-grid       { grid-template-columns: repeat(2, 1fr); }
  .features-grid   { grid-template-columns: repeat(2, 1fr); }
  .product-grid    { grid-template-columns: repeat(2, 1fr); }
  .brand-grid      { grid-template-columns: repeat(3, 1fr); }
  .process-grid    { grid-template-columns: repeat(2, 1fr); }
  .process-step:nth-child(2)::after { display: none; }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.375rem;
    --space-3xl: 3rem;
    --space-2xl: 2rem;
  }

  /* Mobile nav */
  .nav { display: none; }
  .nav.nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm);
    gap: 4px;
  }
  .nav.nav-open a { padding: 12px 16px; width: 100%; }
  .nav-toggle { display: flex; }

  .two-col         { grid-template-columns: 1fr; gap: var(--space-md); }
  .card-grid       { grid-template-columns: repeat(2, 1fr); }
  .features-grid   { grid-template-columns: 1fr; }
  .product-grid    { grid-template-columns: repeat(2, 1fr); }
  .brand-grid      { grid-template-columns: repeat(2, 1fr); }
  .process-grid    { grid-template-columns: 1fr; }
  .process-step::after { display: none; }
  .stats-grid      { grid-template-columns: 1fr; }
  .form-row        { grid-template-columns: 1fr; }
  .cta-inner       { flex-direction: column; text-align: center; }
  .hero-buttons    { flex-direction: column; align-items: flex-start; }
  .hero { min-height: 70vh; }
}

@media (max-width: 480px) {
  .card-grid       { grid-template-columns: 1fr; }
  .product-grid    { grid-template-columns: 1fr; }
  .brand-grid      { grid-template-columns: 1fr; }
  .header-inner    { height: 60px; }
  .btn             { padding: 10px 20px; font-size: var(--font-size-sm); }
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}
.animate-d1 { animation-delay: 0.1s; }
.animate-d2 { animation-delay: 0.2s; }
.animate-d3 { animation-delay: 0.3s; }
.animate-d4 { animation-delay: 0.4s; }

/* --- Skip to content (accessibility) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 9999;
  padding: 8px 16px;
  background: var(--color-primary);
  color: var(--color-white) !important;
  font-weight: 600;
}
.skip-link:focus { top: 0; }

/* --- Product Detail Page --- */
.detail-hero { display:grid; grid-template-columns:1fr 1fr; gap:var(--space-2xl); margin-bottom:var(--space-2xl); align-items:center; }
.detail-img { border-radius:var(--radius-xl); display:flex; align-items:center; justify-content:center; min-height:350px; }
.detail-meta h1 { margin-bottom:var(--space-sm); }
.detail-tags { display:flex; flex-wrap:wrap; gap:10px; margin-top:var(--space-md); }
.dtag { display:inline-block; padding:6px 14px; background:var(--color-bg); border-radius:20px; font-size:var(--font-size-sm); color:var(--color-text-light); }
.detail-body { max-width:800px; }
.detail-section { margin-bottom:var(--space-xl); }
.detail-section h3 { margin-bottom:var(--space-sm); padding-bottom:var(--space-xs); border-bottom:2px solid var(--color-primary-light); }
.detail-features { list-style:none; padding:0; }
.detail-features li { padding:8px 0; padding-left:24px; position:relative; }
.detail-features li::before { content:'✓'; position:absolute; left:0; color:var(--color-primary); font-weight:700; }
.detail-table { width:100%; border-collapse:collapse; }
.detail-table td { padding:10px 14px; border-bottom:1px solid var(--color-border); }
.detail-table td:first-child { font-weight:600; color:var(--color-text-light); width:30%; background:var(--color-bg); }
.back-link:hover { opacity:0.7; }

@media(max-width:768px){ .detail-hero{grid-template-columns:1fr;gap:var(--space-md);} .detail-img{min-height:200px;} }

/* --- Print styles --- */
@media print {
  .header, .footer, .btn, .nav-toggle { display: none; }
  body { font-size: 12pt; }
}