/* ===================================================================
   Prime Project Management — Design System
   Premium consultancy site. Navy & teal palette, serif/sans pairing.
   =================================================================== */

:root {
  /* Brand palette — from PRIME PM LinkedIn banner */
  --navy:        #0E1A3D;   /* deep navy (banner left) */
  --navy-deep:   #07112A;   /* darker still for footer */
  --navy-soft:   #1B2B6B;   /* royal blue (banner right) */
  --teal:        #5DB0DC;   /* sky-blue accent — kept as var name for compatibility */
  --teal-bright: #7CC4E8;   /* lighter sky-blue for on-dark text */
  --gold:        #5DB0DC;   /* legacy alias → sky blue */

  /* Neutrals — cooler to match the all-blue palette */
  --cream:       #F4F6FB;   /* cool off-white background */
  --cream-deep:  #E7ECF5;   /* soft blue-grey for cards */
  --paper:       #FFFFFF;
  --ink:         #0E1A3D;   /* deep navy for body text */
  --ink-soft:    #3B4566;
  --muted:       #6B7384;
  --line:        #D9DFEC;

  /* Type */
  --font-serif:  'Fraunces', Georgia, 'Times New Roman', serif;
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing scale */
  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.5rem;
  --s-4: 2rem;
  --s-5: 3rem;
  --s-6: 4.5rem;
  --s-7: 6.5rem;

  /* Layout */
  --maxw: 1180px;
  --radius: 4px;
  --radius-lg: 10px;
}

/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--navy); }

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--navy);
  margin: 0 0 var(--s-3);
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 400; }
h2 { font-size: clamp(2rem, 3.5vw, 2.8rem); font-weight: 400; }
h3 { font-size: 1.5rem; font-weight: 500; }
h4 { font-size: 1.15rem; font-weight: 600; font-family: var(--font-sans); letter-spacing: 0; }

p { margin: 0 0 var(--s-2); }
.lead {
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 720px;
  margin-bottom: var(--s-4);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: var(--s-2);
}
.eyebrow.on-dark { color: var(--teal-bright); }

/* ===== Layout ===== */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--s-3);
}
section { padding: var(--s-7) 0; }
section.tight { padding: var(--s-6) 0; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 246, 251, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-2) 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.brand:hover { color: var(--navy); }
.brand .mark {
  width: 32px; height: 32px;
  border-radius: 3px;
  background: var(--navy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0;
  position: relative;
}
.brand .mark::after {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1px solid var(--teal);
  border-radius: 2px;
  opacity: 0.35;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  list-style: none;
  margin: 0; padding: 0;
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-links a {
  color: var(--navy);
  position: relative;
}
.nav-links a:hover { color: var(--teal); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--teal);
}

/* mobile nav */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 10px;
  cursor: pointer;
  color: var(--navy);
  font-size: 1.1rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--navy);
  color: var(--cream);
  border-color: var(--navy);
}
.btn-primary:hover {
  background: var(--teal);
  color: var(--navy);
  border-color: var(--teal);
}
.btn-secondary {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-secondary:hover {
  background: var(--navy);
  color: var(--cream);
}
.btn-ghost {
  background: transparent;
  color: var(--teal-bright);
  border-color: rgba(255,255,255,0.3);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--teal-bright);
}
.btn .arrow { transition: transform .25s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ===== Hero ===== */
.hero {
  background: var(--navy);
  color: var(--cream);
  padding: var(--s-7) 0 var(--s-7);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(93, 176, 220, 0.22), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(27, 43, 107, 0.5), transparent 50%);
  pointer-events: none;
}
/* Diagonal stripes echoing the LinkedIn banner */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 140%;
  background:
    linear-gradient(105deg, transparent 48%, var(--teal) 48%, var(--teal) 49.2%, transparent 49.2%),
    linear-gradient(105deg, transparent 52%, var(--navy-soft) 52%, var(--navy-soft) 56%, transparent 56%);
  opacity: 0.65;
  pointer-events: none;
}
/* Corner bracket motif (top-left + bottom-right of hero) */
.hero .corner {
  position: absolute;
  width: 56px;
  height: 56px;
  border-color: var(--teal);
  pointer-events: none;
  z-index: 0;
}
.hero .corner.tl { top: 28px; left: 28px; border-top: 2px solid; border-left: 2px solid; }
.hero .corner.br { bottom: 28px; right: 28px; border-bottom: 2px solid; border-right: 2px solid; }

.page-header .corner {
  position: absolute;
  width: 42px;
  height: 42px;
  border-color: var(--teal);
  pointer-events: none;
  z-index: 0;
}
.page-header .corner.tl { top: 22px; left: 22px; border-top: 2px solid; border-left: 2px solid; }
.page-header .corner.br { bottom: 22px; right: 22px; border-bottom: 2px solid; border-right: 2px solid; }
.hero .container { position: relative; z-index: 1; }
.hero h1 { color: var(--cream); }
.hero h1 em { font-style: italic; color: var(--teal-bright); font-weight: 400; }
.hero .lead { color: rgba(244, 246, 251, 0.78); font-size: 1.3rem; max-width: 680px; }
.hero .cta-row {
  display: flex;
  gap: var(--s-2);
  flex-wrap: wrap;
  margin-top: var(--s-4);
}
.hero .hero-meta {
  margin-top: var(--s-6);
  padding-top: var(--s-3);
  border-top: 1px solid rgba(244, 246, 251, 0.12);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--s-3);
}
.hero .hero-meta div { color: rgba(244, 246, 251, 0.65); font-size: 0.85rem; }
.hero .hero-meta strong {
  display: block;
  color: var(--cream);
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 400;
  margin-bottom: 0.2rem;
}

/* Page header (non-home) */
.page-header {
  background: var(--navy);
  color: var(--cream);
  padding: var(--s-6) 0 var(--s-6);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 30%, rgba(93, 176, 220, 0.22), transparent 50%),
    radial-gradient(circle at 0% 100%, rgba(27, 43, 107, 0.4), transparent 55%);
}
/* Diagonal stripe motif on subpage headers */
.page-header::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -15%;
  width: 55%;
  height: 140%;
  background:
    linear-gradient(105deg, transparent 48%, var(--teal) 48%, var(--teal) 49.2%, transparent 49.2%),
    linear-gradient(105deg, transparent 52%, var(--navy-soft) 52%, var(--navy-soft) 56%, transparent 56%);
  opacity: 0.55;
  pointer-events: none;
}
.page-header .container { position: relative; }
.page-header h1 { color: var(--cream); margin-bottom: var(--s-2); }
.page-header .lead { color: rgba(244, 246, 251, 0.78); margin-bottom: 0; }
.page-header .breadcrumb {
  font-size: 0.85rem;
  color: rgba(244, 246, 251, 0.55);
  margin-bottom: var(--s-2);
  letter-spacing: 0.05em;
}
.page-header .breadcrumb a { color: var(--teal-bright); }

/* ===== Cards / Tiles ===== */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-3);
}
.tile {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: var(--s-4);
  border-radius: var(--radius-lg);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.tile:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(10, 31, 68, 0.08);
  border-color: var(--teal);
}
.tile .icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: var(--navy);
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: var(--s-2);
}
.tile h3 { margin-bottom: var(--s-1); font-size: 1.25rem; }
.tile p { color: var(--ink-soft); margin: 0; font-size: 0.97rem; }

/* ===== Two-col layout ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-6);
  align-items: start;
}
.two-col.tight { gap: var(--s-5); }

/* ===== Stat strip ===== */
.stat-strip {
  background: var(--navy);
  color: var(--cream);
  padding: var(--s-5) 0;
}
.stat-strip .stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--s-3);
  text-align: left;
}
.stat-strip .stat {
  padding: 0 var(--s-2);
  border-left: 2px solid var(--teal);
}
.stat-strip .stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--cream);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-strip .stat span {
  font-size: 0.9rem;
  color: rgba(244, 246, 251, 0.7);
  letter-spacing: 0.02em;
}

/* ===== USP / Quote block ===== */
.usp {
  background: var(--cream-deep);
  border-radius: var(--radius-lg);
  padding: var(--s-6);
  position: relative;
}
.usp::before {
  content: '"';
  position: absolute;
  top: 10px; left: 24px;
  font-family: var(--font-serif);
  font-size: 8rem;
  color: var(--teal);
  opacity: 0.18;
  line-height: 1;
}
.usp blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  line-height: 1.4;
  color: var(--navy);
  font-style: italic;
  font-weight: 400;
  margin: 0 0 var(--s-2);
  position: relative;
}
.usp cite {
  display: block;
  font-style: normal;
  font-size: 0.9rem;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ===== Process steps ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--s-4);
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: var(--s-4);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 300;
  color: var(--teal);
  line-height: 1;
  position: absolute;
  top: -10px; left: 0;
  opacity: 0.5;
}
.step h3 { margin-top: var(--s-3); font-size: 1.3rem; }
.step p { color: var(--ink-soft); }

/* ===== Service block (services page) ===== */
.service-block {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--line);
}
.service-block:last-child { border-bottom: none; }
.service-block .service-side h3 {
  font-size: 1.7rem;
  margin-bottom: var(--s-2);
}
.service-block .service-side .who {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: var(--s-2);
}
.service-block .service-side p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.service-block .service-detail h4 {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: var(--s-2);
  font-weight: 700;
}
.service-block .service-detail ul {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--s-3);
}
.service-block .service-detail ul li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.6rem;
  border-top: 1px solid var(--line);
  color: var(--ink);
}
.service-block .service-detail ul li:first-child { border-top: none; }
.service-block .service-detail ul li::before {
  content: '→';
  position: absolute;
  left: 0; top: 0.4rem;
  color: var(--teal);
  font-weight: 600;
}

/* ===== Case Study cards ===== */
.case-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--s-5);
  margin-bottom: var(--s-4);
  transition: box-shadow .3s ease, border-color .3s ease;
}
.case-card:hover {
  box-shadow: 0 14px 40px rgba(10, 31, 68, 0.06);
  border-color: var(--teal);
}
.case-card .case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-bottom: var(--s-2);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}
.case-card .case-meta span {
  background: var(--cream-deep);
  color: var(--navy);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
}
.case-card h3 { font-size: 1.6rem; }
.case-card .case-section {
  margin-top: var(--s-3);
}
.case-card .case-section h4 {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.4rem;
  font-weight: 700;
}
.case-card .case-section p {
  color: var(--ink-soft);
  margin: 0;
}
.case-card .outcomes {
  margin-top: var(--s-4);
  padding-top: var(--s-3);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--s-2);
}
.case-card .outcome strong {
  display: block;
  font-family: var(--font-serif);
  color: var(--navy);
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1;
}
.case-card .outcome span {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.3rem;
}

/* ===== CTA strip ===== */
.cta-strip {
  background: var(--navy);
  color: var(--cream);
  padding: var(--s-6) 0;
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 50%, rgba(93, 176, 220, 0.22), transparent 50%),
    radial-gradient(circle at 5% 100%, rgba(27, 43, 107, 0.5), transparent 50%);
}
.cta-strip .container { position: relative; }
.cta-strip h2 { color: var(--cream); margin-bottom: var(--s-2); }
.cta-strip p { color: rgba(244, 246, 251, 0.78); font-size: 1.1rem; margin-bottom: var(--s-3); max-width: 600px; }
.cta-strip .cta-row { display: flex; gap: var(--s-2); flex-wrap: wrap; }

/* ===== Principles list (about) ===== */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-3);
}
.principle {
  padding: var(--s-3);
  border-left: 3px solid var(--teal);
  background: var(--paper);
}
.principle h4 {
  margin-bottom: 0.5rem;
  color: var(--navy);
}
.principle p {
  color: var(--ink-soft);
  margin: 0;
  font-size: 0.95rem;
}

/* ===== Sector pills (about) ===== */
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: var(--s-3);
}
.pill {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--navy);
  color: var(--navy);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Contact form ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--s-6);
  align-items: start;
}
.contact-form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--s-5);
}
.field { margin-bottom: var(--s-3); }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  transition: border-color .2s ease, background .2s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--teal);
  background: var(--paper);
}
.field textarea { resize: vertical; min-height: 110px; }

.contact-side h3 { font-size: 1.4rem; margin-bottom: var(--s-2); }
.contact-side ul { list-style: none; padding: 0; margin: 0 0 var(--s-4); }
.contact-side ul li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}
.contact-side ul li strong { color: var(--navy); font-weight: 600; }
.contact-side .booking-card {
  background: var(--navy);
  color: var(--cream);
  border-radius: var(--radius-lg);
  padding: var(--s-4);
}
.contact-side .booking-card h3 { color: var(--cream); }
.contact-side .booking-card p { color: rgba(244, 246, 251, 0.78); margin-bottom: var(--s-3); }

/* ===== Footer ===== */
.site-footer {
  background: var(--navy-deep);
  color: rgba(244, 246, 251, 0.7);
  padding: var(--s-6) 0 var(--s-4);
  margin-top: var(--s-6);
}
.site-footer .foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: var(--s-4);
  margin-bottom: var(--s-4);
}
.site-footer h5 {
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 var(--s-2);
  font-weight: 600;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { padding: 0.3rem 0; }
.site-footer ul li a { color: rgba(244, 246, 251, 0.7); font-size: 0.95rem; }
.site-footer ul li a:hover { color: var(--teal-bright); }
.site-footer .brand-block .brand { color: var(--cream); }
.site-footer .brand-block p { font-size: 0.9rem; margin-top: var(--s-2); max-width: 280px; }
.site-footer .foot-bar {
  border-top: 1px solid rgba(244, 246, 251, 0.12);
  padding-top: var(--s-3);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-2);
  font-size: 0.85rem;
}

/* ===== Section header helper ===== */
.section-head { max-width: 720px; margin-bottom: var(--s-5); }
.section-head h2 { margin-bottom: var(--s-2); }
.section-head p { color: var(--ink-soft); font-size: 1.1rem; margin: 0; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ===== Utility ===== */
.bg-cream { background: var(--cream); }
.bg-paper { background: var(--paper); }
.bg-deep { background: var(--cream-deep); }
.center { text-align: center; }
.mt-3 { margin-top: var(--s-3); }
.mt-4 { margin-top: var(--s-4); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; gap: var(--s-4); }
  .service-block { grid-template-columns: 1fr; gap: var(--s-3); padding: var(--s-4) 0; }
  .contact-grid { grid-template-columns: 1fr; gap: var(--s-4); }
  .site-footer .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  section { padding: var(--s-6) 0; }
  .hero { padding: var(--s-6) 0; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--cream);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--s-2);
    padding: var(--s-3);
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav { position: relative; }
  .site-footer .foot-grid { grid-template-columns: 1fr; }
  .usp { padding: var(--s-4); }
  .usp blockquote { font-size: 1.2rem; }
}