/* ------------------------------
   Design tokens
--------------------------------*/
:root{
    --bg: #0b0c0d;            /* near-black canvas */
    --panel: #0f1115;         /* dark panel */
    --ink: #e6f7f6;           /* soft teal-tinged text */
    --muted: #b8c4c3;         /* secondary text */
    --line: #1b2330;          /* subtle borders */
    --brand-900: #000000;
    --brand-400: #5eede6;     /* teal accent */
    --brand-300: #9ff3ee;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
    --radius-xl: 20px;
    --radius-lg: 14px;
    --radius-md: 10px;
  
    --step--1: clamp(.9rem, .85rem + .2vw, 1rem);
    --step-0: clamp(1rem, .9rem + .3vw, 1.125rem);
    --step-1: clamp(1.125rem, 1rem + .6vw, 1.35rem);
    --step-2: clamp(1.35rem, 1.1rem + 1.2vw, 1.75rem);
    --step-3: clamp(1.75rem, 1.4rem + 1.8vw, 2.25rem);
    --step-4: clamp(2.25rem, 1.6rem + 3vw, 3rem);
  
    --space-1: .5rem;
    --space-2: .75rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
  
    --focus: 0 0 0 3px rgba(94,237,230,.4), 0 0 0 6px rgba(94,237,230,.2);
  }
  
  /* Respect users preferring less motion */
  @media (prefers-reduced-motion: reduce){
    *{ animation: none !important; transition: none !important; }
  }
  
  /* ------------------------------
     Base / layout
  --------------------------------*/
  *{ box-sizing: border-box; margin: 0; padding: 0; }
  
  html, body{ height: 100%; }
  
  body{
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: radial-gradient(1200px 800px at 80% -10%, rgba(94,237,230,.08), transparent 60%),
                radial-gradient(900px 600px at -10% 10%, rgba(94,237,230,.06), transparent 50%),
                var(--bg);
    color: var(--ink);
    line-height: 1.6;
  }
  
  /* Container keeps rhythm */
  .container{
    width: min(1200px, 92vw);
    margin: 0 auto;
  }
  
  /* Skip link for accessibility */
  .skip-link{
    position: absolute;
    left: -999px; top: -999px;
  }
  .skip-link:focus{
    left: 1rem; top: 1rem; z-index: 1000;
    background: var(--panel); color: var(--ink);
    padding: .6rem 1rem; border-radius: var(--radius-md);
    outline: none; box-shadow: var(--focus);
  }
  
  /* ------------------------------
     Top banner / nav
  --------------------------------*/
  .site-header{
    position: relative;
    padding: var(--space-3) 0 var(--space-5);
  }
  
  .top-banner{
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-3);
    background: rgba(255,255,255,.02);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: .75rem 1rem;
    box-shadow: 0 6px 16px rgba(0,0,0,.25);
    backdrop-filter: blur(8px);
  }
  
  .brand{
    display: inline-flex; align-items: center; gap: .6rem;
    color: var(--ink); text-decoration: none; font-weight: 700;
  }
  .brand img{ height: 48px; width: auto; object-fit: contain; display: block; }
  .brand-name{ letter-spacing:.2px; font-size: var(--step-0); opacity:.95; }
  
  /* Hamburger (checkbox hack) */
  .nav-toggle{ display:none; }
  .nav-toggle-btn{
    display: none; width: 42px; height: 34px;
    border: 1px solid var(--line); border-radius: 8px;
    align-items: center; justify-content: center; cursor: pointer;
  }
  .nav-toggle-btn span{
    display:block; width:22px; height:2px; background: var(--ink); margin:4px 0;
    transition: transform .25s ease, opacity .25s ease;
  }
  
  /* Nav links */
  .main-nav{ justify-self: end; }
  .nav-links{
    display:flex; list-style:none; gap: 1rem; flex-wrap: wrap; align-items: center;
  }
  .nav-link{
    color: var(--ink); text-decoration: none;
    padding: .6rem .9rem; border-radius: 10px;
    border: 1px solid transparent;
    background: rgba(255,255,255,.02);
    transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
    font-size: var(--step-0); font-weight: 550;
  }
  .nav-link:hover{ transform: translateY(-1px); background: rgba(255,255,255,.06); border-color: var(--line); }
  .nav-link:focus-visible{ outline:none; box-shadow: var(--focus); }
  .nav-link.active{ background: rgba(94,237,230,.12); border-color: rgba(94,237,230,.3); color: var(--ink); }
  
  /* Mobile nav */
  @media (max-width: 880px){
    .top-banner{ grid-template-columns: auto auto 42px; }
    .main-nav{ grid-column: 1 / -1; }
    .nav-toggle-btn{ display:flex; }
    .nav-links{
      display: grid; grid-template-columns: 1fr; gap: .5rem;
      max-height: 0; overflow: hidden; transition:max-height .25s ease;
      padding-top: 0;
    }
    .nav-toggle:checked ~ .main-nav .nav-links{ max-height: 240px; padding-top: .5rem; }
    /* Animate icon */
    .nav-toggle:checked + .nav-toggle-btn span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
    .nav-toggle:checked + .nav-toggle-btn span:nth-child(2){ opacity: 0; }
    .nav-toggle:checked + .nav-toggle-btn span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }
  }
  
  /* ------------------------------
     Hero
  --------------------------------*/
  .hero{
    position: relative;
    margin-top: var(--space-4);
  }
  .hero-inner{
    padding: var(--space-6) 0;
    display: grid; gap: var(--space-3);
    text-align: center;
  }
  .hero h1{
    font-size: var(--step-4); line-height: 1.08; letter-spacing: .2px;
    background: linear-gradient(135deg, var(--brand-900) 0%, var(--brand-400) 100%);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  }
  .hero p{ font-size: var(--step-1); color: var(--muted); max-width: 70ch; margin: 0 auto; }
  
  .hero-cta{ display:flex; gap: .75rem; justify-content: center; flex-wrap: wrap; margin-top: .25rem; }
  
  /* Buttons */
  .btn{
    display:inline-flex; align-items:center; gap:.5rem; text-decoration:none; cursor:pointer;
    padding:.8rem 1.1rem; border-radius: 12px; font-weight: 650; font-size: var(--step-0);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    border: 1px solid transparent;
  }
  .btn:focus-visible{ outline:none; box-shadow: var(--focus); }
  .btn-solid{ background: linear-gradient(135deg, var(--brand-900), var(--brand-400)); color: white; }
  .btn-solid:hover{ transform: translateY(-1px); }
  .btn-ghost{ background: transparent; color: var(--ink); border-color: var(--line); }
  .btn-ghost:hover{ background: rgba(255,255,255,.06); }
  
  .hero-glow{
    position:absolute; inset: -40px -10% auto -10%;
    height: 260px; pointer-events:none; z-index:-1;
    background: radial-gradient(600px 200px at 50% 10%, rgba(94,237,230,.18), transparent 60%);
    filter: blur(30px);
  }
  
  /* ------------------------------
     Sections / cards
  --------------------------------*/
  .section{ padding: var(--space-6) 0; }
  
  .grid-2{
    display:grid; gap: var(--space-3);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  @media (max-width: 900px){ .grid-2{ grid-template-columns: 1fr; } }
  
  .card{
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    box-shadow: var(--shadow);
  }
  .card.soft{ background: linear-gradient(180deg, rgba(94,237,230,.07), rgba(255,255,255,.02)); }
  .card.neutral{ background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01)); }
  
  h2{ font-size: var(--step-3); margin-bottom: .4rem; }
  h3{ font-size: var(--step-2); margin-bottom: .25rem; }
  p{ font-size: var(--step-0); color: var(--muted); }
  
  .inline-link{
    display:inline-flex; gap:.4rem; align-items:center;
    color: var(--ink); text-decoration: none; margin-top: .6rem;
    border-bottom: 1px dashed rgba(94,237,230,.4);
    transition: color .2s ease, transform .2s ease, border-color .2s ease;
  }
  .inline-link:hover{ transform: translateY(-1px); color: var(--brand-300); border-color: rgba(94,237,230,.6); }
  .inline-link:focus-visible{ outline:none; box-shadow: var(--focus); }
  
  /* Problem card refactor */
  .problem-card{
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    position: relative; overflow: clip;
    box-shadow: var(--shadow);
  }
  .problem-card::before{
    content: ""; position: absolute; left:0; right:0; top:0; height:4px;
    background: linear-gradient(135deg, var(--brand-900) 0%, var(--brand-400) 100%);
  }
  .problem-list{
    margin: .75rem 0 .25rem;
    display:grid; gap:.5rem;
    padding-left: 1.2rem;
  }
  .problem-list li{ color: var(--ink); }
  
  /* ------------------------------
     Footer
  --------------------------------*/
  .site-footer{
    padding: var(--space-6) 0;
    border-top: 1px solid var(--line);
    margin-top: var(--space-6);
    background: rgba(255,255,255,.02);
  }
  .footer-inner{
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    flex-wrap: wrap;
  }
  .footer-links{ list-style: none; display: flex; gap: .9rem; }
  .footer-links a{ color: var(--muted); text-decoration:none; }
  .footer-links a:hover{ color: var(--ink); }
  .muted{ color: var(--muted); }
  
  /* ------------------------------
     You can keep team grid styles on team.html
     (moved from your original for clarity)
  --------------------------------*/