/* ── 4visionCare Website Design System ── */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&display=swap');

:root{
  --blue:    #1877F2;
  --blue-dk: #0E5FD8;
  --blue-lt: #EBF3FF;
  --amber:   #E8954A;
  --ink:     #0B0E14;
  --navy:    #0D1B40;
  --paper:   #F5F3EE;
  --slate:   #F0F4FA;
  --text:    #2D3A52;
  --muted:   #5A6A8A;
  --line:    #D8DEE6;
  --white:   #FFFFFF;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Inter',sans-serif;color:var(--text);background:var(--white);line-height:1.6;}

/* ── Typography ── */
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;line-height:1.15;}
h1{font-size:clamp(36px,5vw,60px);font-weight:700;}
h2{font-size:clamp(26px,3.5vw,40px);font-weight:700;}
h3{font-size:clamp(18px,2vw,24px);font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin-bottom:16px;font-size:17px;color:var(--text);}

/* ── Navigation ── */
nav{background:var(--ink);padding:0 40px;display:flex;align-items:center;height:64px;position:sticky;top:0;z-index:100;}
.nav-logo{font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:700;color:var(--white);text-decoration:none;display:flex;align-items:center;gap:10px;letter-spacing:0;}
.nav-logo .mark{background:var(--amber);color:var(--ink);width:30px;height:30px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0;}
.nav-logo span{color:var(--amber);}
.nav-logo .logo-name{letter-spacing:0;word-spacing:0;}
.nav-links{display:flex;gap:4px;margin-left:auto;}
.nav-links a{color:rgba(255,255,255,0.75);text-decoration:none;padding:6px 14px;border-radius:6px;font-size:15px;font-weight:500;transition:all .2s;}
.nav-links a:hover,.nav-links a.active{color:var(--white);background:rgba(255,255,255,0.1);}
.nav-cta{margin-left:16px;background:var(--blue);color:var(--white);padding:8px 18px;border-radius:7px;font-size:14px;font-weight:600;text-decoration:none;transition:background .2s;}
.nav-cta:hover{background:var(--blue-dk);}

/* ── Sections ── */
.section{padding:80px 40px;}
.section-inner{max-width:1100px;margin:0 auto;}
.section-dark{background:var(--ink);color:var(--paper);}
.section-navy{background:var(--navy);color:var(--paper);}
.section-slate{background:var(--slate);}
.section-blue{background:var(--blue-lt);}

/* ── Section labels ── */
.eyebrow{font-family:'Inter',monospace;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin-bottom:12px;}
.eyebrow-blue{color:var(--blue);}
.section-title{margin-bottom:16px;}
.section-sub{font-size:18px;color:var(--muted);max-width:640px;margin-bottom:48px;line-height:1.6;}
.section-dark .section-sub,.section-navy .section-sub{color:rgba(245,243,238,0.65);}

/* ── Grid layouts ── */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}

/* ── Cards ── */
.card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:28px;transition:box-shadow .2s,border-color .2s;}
.card:hover{box-shadow:0 8px 28px rgba(24,119,242,0.08);border-color:rgba(24,119,242,0.2);}
.card-dark{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.1);}
.card-dark:hover{border-color:rgba(232,149,74,0.35);}
.card-icon{font-size:32px;margin-bottom:14px;}
.card h4{margin-bottom:8px;color:var(--ink);}
.card-dark h4{color:var(--paper);}
.card p{font-size:15px;color:var(--muted);margin:0;}
.card-dark p{color:rgba(245,243,238,0.6);}
.card-blue-accent{border-top:3px solid var(--blue);}
.card-amber-accent{border-top:3px solid var(--amber);}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:8px;font-size:16px;font-weight:600;text-decoration:none;transition:all .2s;cursor:pointer;border:none;}
.btn-primary{background:var(--blue);color:var(--white);}
.btn-primary:hover{background:var(--blue-dk);transform:translateY(-1px);}
.btn-secondary{background:transparent;color:var(--blue);border:2px solid var(--blue);}
.btn-secondary:hover{background:var(--blue-lt);}
.btn-amber{background:var(--amber);color:var(--ink);}
.btn-amber:hover{background:#D4813A;transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,0.1);color:var(--white);border:1px solid rgba(255,255,255,0.2);}
.btn-ghost:hover{background:rgba(255,255,255,0.18);}

/* ── Stats row ── */
.stats-row{display:flex;gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;}
.stat-item{flex:1;padding:32px 24px;text-align:center;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:none;}
.stat-num{font-family:'Space Grotesk',sans-serif;font-size:42px;font-weight:700;color:var(--blue);line-height:1;}
.stat-lbl{font-size:13px;color:var(--muted);margin-top:6px;}
.dark .stat-num{color:var(--amber);}
.dark .stat-item{border-color:rgba(255,255,255,0.08);}
.dark .stats-row{border-color:rgba(255,255,255,0.08);}
.dark .stat-lbl{color:rgba(245,243,238,0.5);}

/* ── Service tile ── */
.service-tile{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;align-items:flex-start;gap:16px;transition:all .2s;}
.service-tile:hover{border-color:var(--blue);box-shadow:0 4px 20px rgba(24,119,242,0.08);}
.service-tile .s-icon{font-size:28px;flex-shrink:0;width:52px;height:52px;background:var(--blue-lt);border-radius:10px;display:flex;align-items:center;justify-content:center;}
.service-tile h4{margin-bottom:4px;color:var(--ink);}
.service-tile p{font-size:14px;color:var(--muted);margin:0;}
.service-tile .ep{font-size:11px;font-weight:600;color:var(--blue);letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px;}

/* ── Tier block ── */
.tier-block{border-radius:12px;padding:28px;flex:1;}
.tier-enterprise{background:var(--ink);}
.tier-mid{background:var(--navy);}
.tier-practice{background:#1A3A5C;}
.tier-block h4{color:var(--amber);font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px;}
.tier-block li{color:rgba(255,255,255,0.85);font-size:15px;list-style:none;padding:6px 0;border-bottom:1px solid rgba(255,255,255,0.07);}
.tier-block li:last-child{border-bottom:none;}

/* ── Footer ── */
footer{background:var(--ink);padding:48px 40px 32px;color:rgba(255,255,255,0.6);}
.footer-inner{max-width:1100px;margin:0 auto;}
.footer-top{display:flex;gap:48px;margin-bottom:40px;}
.footer-brand{flex:2;}
.footer-brand .logo{font-family:'Space Grotesk',sans-serif;font-size:22px;font-weight:700;color:var(--white);margin-bottom:10px;}
.footer-brand .logo span{color:var(--amber);}
.footer-brand p{font-size:14px;line-height:1.6;max-width:320px;}
.footer-col{flex:1;}
.footer-col h5{color:var(--white);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;}
.footer-col a{display:block;color:rgba(255,255,255,0.55);text-decoration:none;font-size:14px;padding:4px 0;transition:color .2s;}
.footer-col a:hover{color:var(--amber);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:24px;display:flex;justify-content:space-between;font-size:13px;}

/* ── Mobile ── */
@media(max-width:768px){
  nav{padding:0 20px;}
  .nav-links{display:none;}
  .section{padding:56px 20px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .stats-row{flex-direction:column;}
  .stat-item{border-right:none;border-bottom:1px solid var(--line);}
  .footer-top{flex-direction:column;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .tier-block{margin-bottom:12px;}
}