/* PetHydrationCalc global styles */
:root{--bg:#f7fbfb;--ink:#14282a;--muted:#617d80;--brand:#0b6b6b;--brand-2:#09a3a3;--card:#ffffff;--line:#dce7e7}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{height:100%}
body{margin:0;font-family:ui-sans-serif,system-ui,"Segoe UI",Roboto,Arial,"Apple Color Emoji","Segoe UI Emoji";color:var(--ink);background:var(--bg);line-height:1.5}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration-color:rgba(11,107,107,.35)}
a:hover{color:var(--brand)}

.container{max-width:1024px;margin-inline:auto;padding:clamp(12px,2vw,24px)}
section{padding-block:clamp(20px,4vw,44px)}
.skip-link{position:absolute;left:-999px;top:-999px;background:var(--brand);color:#fff;padding:8px 12px;border-radius:10px}
.skip-link:focus{left:12px;top:12px}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:linear-gradient(180deg,#ffffffdd,#ffffffc0 0.7rem,#ffffff00);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.2px;text-decoration:none;color:var(--ink)}
.nav a{margin-left:16px;text-decoration:none;color:var(--ink);font-weight:600}
.nav a:hover{color:var(--brand)}

/* Hero with “video gradient” animation */
.hero{position:relative;min-height:54vh;display:grid;place-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:-40vmax;background:radial-gradient(60vmax 60vmax at 40% 40%, #09a3a333, transparent), radial-gradient(50vmax 50vmax at 70% 55%, #0b6b6b33, transparent), linear-gradient(180deg, #e9fbfb, #f7fbfb 20%, transparent);filter:blur(20px);animation:floaty 9s linear infinite alternate}
@keyframes floaty{0%{transform:translate3d(-3%,-2%,0)}100%{transform:translate3d(3%,2%,0)}}
.hero-inner h1{font-size:clamp(28px,5vw,48px);margin:0 0 8px}
.lede{font-size:clamp(16px,2vw,20px);color:var(--muted);max-width:56ch}

/* Buttons */
.btn{appearance:none;border:1px solid var(--line);background:#fff;padding:10px 14px;border-radius:14px;font-weight:700;cursor:pointer;transition:transform .12s ease, box-shadow .12s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(180deg, var(--brand-2), var(--brand));border:none;color:white;box-shadow:0 10px 30px #0b6b6b33}
.btn-secondary{background:#f2f7f7}

/* Grids */
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(auto-fit, minmax(220px, 1fr))}
.grid-3{grid-template-columns:repeat(auto-fit, minmax(240px, 1fr))}

/* Forms */
.tool h2{margin-top:24px}
.input-row{display:grid;grid-template-columns:1fr 80px;gap:8px}
label{display:grid;gap:6px}
input,select{padding:10px;border-radius:12px;border:1px solid var(--line);background:white}
input:focus-visible,select:focus-visible,button:focus-visible,a.btn:focus-visible{outline:3px solid #09a3a3;outline-offset:2px}

/* Result panel */
.result{margin-top:16px;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:16px}
.result h3{margin:0 0 8px}
.muted{color:var(--muted)}
.actions{display:flex;gap:10px;flex-wrap:wrap}

/* Cards */
.card{padding:16px;background:white;border:1px solid var(--line);border-radius:16px;box-shadow:0 1px 0 #ffffff inset}
.tool-card h3{margin-top:0}
.tool-card{text-decoration:none;color:inherit;transition:transform 0.15s ease, box-shadow 0.15s ease}
.tool-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0b6b6b1a}

/* Checklist */
.checklist h2{margin-top:40px}
.risk{display:grid;gap:8px;margin-top:8px}
.risk-bar{height:14px;background:#edf6f6;border-radius:999px;overflow:hidden;border:1px solid var(--line)}
.risk-bar span{display:block;height:100%;background:linear-gradient(90deg, #29c785, #f7c948, #e12d39);transition:width 0.25s ease}
.note{font-size:0.9rem;color:var(--muted)}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700}

/* Footer */
.site-footer{margin-top:48px;padding:28px 0;border-top:1px solid var(--line);color:var(--muted)}

/* Responsive */
@media (max-width: 640px){
  .nav{display:flex;gap:12px;flex-wrap:wrap;font-size:0.95rem}
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  *{animation: none !important;transition: none !important}
}