/* ── Houston Zoo White Page — Wildlife Knowledge Hub ── */
:root{--zw-forest:#1b5e20;--zw-dark:#0d3311;--zw-leaf:#388e3c;--zw-lime:#81c784;--zw-light:#e8f5e9;--zw-sand:#fefcf3;--zw-gold:#f9a825;--zw-text:#1f2937;--zw-muted:#6b7280;--zw-white:#fff;--zw-radius:14px;--zw-font:'Montserrat',system-ui,sans-serif;--zw-font-display:'Playfair Display',Georgia,serif}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{font-family:var(--zw-font);color:var(--zw-text);line-height:1.7;background:var(--zw-sand)}
a{color:var(--zw-leaf);text-decoration:none;transition:color .2s}a:hover{color:var(--zw-forest)}
img{max-width:100%;display:block}
.zw-container{max-width:1100px;margin:0 auto;padding:0 20px}

/* ── Nav ── */
.zw-nav{position:fixed;top:0;left:0;right:0;background:rgba(27,94,32,.95);backdrop-filter:blur(12px);z-index:1000;border-bottom:1px solid rgba(255,255,255,.1)}
.zw-nav__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.zw-nav__brand{font-family:var(--zw-font-display);font-size:1.4rem;color:var(--zw-white);font-weight:700;display:flex;align-items:center;gap:10px}
.zw-nav__brand img{height:36px;width:36px;border-radius:8px;object-fit:cover}
.zw-nav__brand span{color:var(--zw-gold)}
.zw-nav__links{display:flex;gap:24px;list-style:none}
.zw-nav__links a{color:rgba(255,255,255,.8);font-size:.9rem;font-weight:500;transition:color .2s}
.zw-nav__links a:hover{color:var(--zw-gold)}
.zw-nav__toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}
@media(max-width:768px){.zw-nav__links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--zw-forest);padding:20px}.zw-nav__links.is-open{display:flex}.zw-nav__toggle{display:block}}

/* ── Hero ── */
.zw-hero{position:relative;min-height:75vh;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;padding:120px 20px 60px;background:linear-gradient(135deg,rgba(27,94,32,.92),rgba(56,142,60,.8)),url('assets/img/hero.png');background-size:cover;background-position:center}
.zw-hero h1{font-family:var(--zw-font-display);font-size:clamp(2rem,5vw,3.5rem);margin-bottom:16px;line-height:1.2}
.zw-hero p{font-size:1.15rem;max-width:650px;margin:0 auto 28px;opacity:.9}
.zw-hero__badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:8px 18px;border-radius:30px;font-size:.85rem;margin-bottom:20px}

/* ── Sections ── */
.zw-section{padding:70px 0}
.zw-section--alt{background:#f1f8e9}
.zw-section__header{text-align:center;margin-bottom:45px}
.zw-section__tag{display:inline-block;background:var(--zw-light);color:var(--zw-forest);font-weight:600;font-size:.8rem;padding:5px 14px;border-radius:20px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}
.zw-section__title{font-family:var(--zw-font-display);font-size:clamp(1.6rem,3.5vw,2.4rem);color:var(--zw-forest);margin-bottom:10px}
.zw-section__subtitle{color:var(--zw-muted);max-width:600px;margin:0 auto;font-size:1rem}

/* ── Article Cards ── */
.zw-articles{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:28px}
.zw-article{background:var(--zw-white);border-radius:var(--zw-radius);overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s}
.zw-article:hover{transform:translateY(-4px);box-shadow:0 12px 35px rgba(0,0,0,.1)}
.zw-article__img{height:200px;overflow:hidden;background:var(--zw-light)}
.zw-article__img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.zw-article:hover .zw-article__img img{transform:scale(1.06)}
.zw-article__body{padding:22px}
.zw-article__cat{font-size:.75rem;font-weight:600;text-transform:uppercase;color:var(--zw-leaf);letter-spacing:.5px;margin-bottom:6px}
.zw-article__title{font-family:var(--zw-font-display);font-size:1.15rem;color:var(--zw-forest);margin-bottom:8px;line-height:1.35}
.zw-article__excerpt{font-size:.9rem;color:var(--zw-muted);line-height:1.6}
.zw-article__full{display:none;margin-top:12px;font-size:.9rem;color:var(--zw-text);line-height:1.7}
.zw-article__toggle{display:inline-block;margin-top:10px;color:var(--zw-leaf);font-weight:600;font-size:.85rem;cursor:pointer;border:none;background:none;padding:0}
.zw-article__toggle:hover{text-decoration:underline}

/* ── FAQ ── */
.zw-faq{max-width:750px;margin:0 auto}
.zw-faq__item{background:var(--zw-white);border-radius:12px;margin-bottom:12px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.zw-faq__q{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;font-weight:600;color:var(--zw-forest);font-size:.95rem}
.zw-faq__q::after{content:'+';font-size:1.3rem;font-weight:300;transition:transform .3s}
.zw-faq__item.is-open .zw-faq__q::after{transform:rotate(45deg)}
.zw-faq__a{padding:0 20px 16px;font-size:.9rem;color:var(--zw-muted);display:none;line-height:1.7}
.zw-faq__item.is-open .zw-faq__a{display:block}

/* ── Lead Form ── */
.zw-lead{max-width:500px;margin:0 auto;background:var(--zw-white);border-radius:var(--zw-radius);padding:35px;box-shadow:0 8px 30px rgba(0,0,0,.08)}
.zw-lead h3{font-family:var(--zw-font-display);font-size:1.3rem;color:var(--zw-forest);margin-bottom:6px;text-align:center}
.zw-lead p{font-size:.9rem;color:var(--zw-muted);margin-bottom:20px;text-align:center}
.zw-lead input{width:100%;padding:12px 14px;border:1.5px solid #d1d5db;border-radius:8px;font-size:.95rem;margin-bottom:12px;transition:border .2s}
.zw-lead input:focus{outline:none;border-color:var(--zw-leaf)}
.zw-lead button{width:100%;padding:13px;background:linear-gradient(135deg,var(--zw-forest),var(--zw-leaf));color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:transform .2s}
.zw-lead button:hover{transform:translateY(-2px)}

/* ── Footer ── */
.zw-footer{background:var(--zw-dark);color:rgba(255,255,255,.7);padding:50px 0 30px}
.zw-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:30px}
@media(max-width:768px){.zw-footer__grid{grid-template-columns:1fr}}
.zw-footer h4{color:#fff;font-size:1rem;margin-bottom:12px}
.zw-footer a{color:rgba(255,255,255,.6)}
.zw-footer a:hover{color:var(--zw-gold)}
.zw-footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.8rem}
.zw-footer__disclaimer{font-style:italic;font-size:.8rem;opacity:.6;margin-top:8px;max-width:700px;margin-left:auto;margin-right:auto}

/* ── Animations ── */
.zw-fade{opacity:0;transform:translateY(25px);transition:all .6s ease}.zw-fade.is-visible{opacity:1;transform:translateY(0)}