/* Akvaryum Rehberi — su testi şeridi / indikatör renkleri */
:root{
  --paper:#f8f6ef;
  --glass:#e4eee9;
  --ink:#0c2630;
  --ink2:#37505a;
  --yellow:#f0c02b;
  --green:#2fa36b;
  --blue:#2b5fd6;
  --blue-d:#1f4db0;
  --pink:#b01f66;
  --head:"Bahnschrift","DIN Alternate","Arial Narrow","Roboto Condensed","Helvetica Neue",Arial,sans-serif;
  --body:"Book Antiqua","Palatino Linotype",Palatino,Georgia,serif;
  --mono:Consolas,"SFMono-Regular",Menlo,"Courier New",monospace;
  --tint:#2fa36b;
  --prog:0;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;color:var(--ink);background-color:var(--paper);
  background-image:linear-gradient(rgba(12,38,48,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(12,38,48,.05) 1px,transparent 1px);
  background-size:26px 26px;
  font-family:var(--body);font-size:1.0625rem;line-height:1.65;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--head);font-weight:700;line-height:1.02;margin:0 0 .6em;letter-spacing:-.01em}
h1{font-size:clamp(2.7rem,8.4vw,6.4rem);text-transform:uppercase;line-height:.92}
h2{font-size:clamp(2rem,4.8vw,3.5rem)}
h3{font-size:clamp(1.3rem,2.2vw,1.65rem);line-height:1.1}
p{margin:0 0 1em}
.wrap{width:min(1180px,100% - 2.5rem);margin-inline:auto}
.tag{font-family:var(--mono);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink2);display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}
.tag::before{content:"";width:2.2rem;height:.7rem;border-radius:99px;background:linear-gradient(90deg,var(--yellow),var(--green),var(--blue))}
:focus-visible{outline:3px solid var(--blue-d);outline-offset:3px;border-radius:3px}
.why :focus-visible,.atmosphere :focus-visible,.site-footer :focus-visible{outline-color:var(--yellow)}

/* Buttons */
.btn{display:inline-block;font-family:var(--head);font-weight:700;font-size:1.05rem;letter-spacing:.02em;text-decoration:none;background:var(--ink);color:var(--paper);border:2px solid var(--ink);padding:.8rem 1.4rem;border-radius:99px;cursor:pointer;transition:background .2s,color .2s,transform .2s}
.btn:hover{background:var(--blue-d);border-color:var(--blue-d)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn.small{padding:.45rem 1rem;font-size:1rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(248,246,239,.94);backdrop-filter:blur(6px);border-bottom:1px solid rgba(12,38,48,.15)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 0}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-family:var(--head);font-weight:700;font-size:1.3rem;letter-spacing:.01em}
.nav ul{list-style:none;display:flex;align-items:center;gap:1.6rem;margin:0;padding:0}
.nav a{text-decoration:none;font-family:var(--head);font-weight:600;font-size:1.05rem}
.nav a:not(.btn){padding:.3rem 0;background:linear-gradient(var(--blue),var(--blue)) 0 100%/0 3px no-repeat;transition:background-size .25s}
.nav a:not(.btn):hover{background-size:100% 3px}
.menu-btn{display:none;font-family:var(--head);font-weight:700;font-size:1rem;background:transparent;color:var(--ink);border:2px solid var(--ink);border-radius:99px;padding:.4rem 1rem;cursor:pointer}
.progress{position:absolute;left:0;bottom:-1px;height:3px;width:calc(var(--prog) * 100%);background:linear-gradient(90deg,var(--yellow),var(--green),var(--blue))}

/* Test strip */
.strip{position:fixed;z-index:40;display:flex;pointer-events:none}
.pad{display:block;position:relative;pointer-events:auto}
.pad[data-k=ph]{background:#f0c02b}
.pad[data-k=nh3]{background:#2f7d3a}
.pad[data-k=no2]{background:#f3dfe8}
.pad[data-k=no3]{background:#f7e8bd}
.pad::after{content:attr(data-l);position:absolute;font-family:var(--mono);font-size:.75rem;background:var(--ink);color:var(--paper);padding:.15rem .5rem;border-radius:4px;opacity:0;transition:opacity .2s;white-space:nowrap}
.pad:hover::after{opacity:1}
@media (min-width:1000px){
  body{padding-right:58px}
  .strip{right:10px;top:50%;transform:translateY(-50%);flex-direction:column;gap:6px;background:#fff;padding:8px;border-radius:12px;border:2px solid var(--ink)}
  .pad{width:30px;height:62px;border-radius:5px;border:1px solid rgba(12,38,48,.35);transition:width .2s}
  .pad:hover{width:38px;margin-left:-8px}
  .pad::after{right:calc(100% + 8px);top:50%;transform:translateY(-50%)}
}
@media (max-width:999px){
  .strip{left:0;right:0;bottom:0;height:8px}
  .pad{flex:1}
  .pad::after{display:none}
  .site-footer{padding-bottom:calc(2rem + 8px)}
}

/* Sections */
section{padding:clamp(3.5rem,9vw,7rem) 0;position:relative}
.sec-head{max-width:46rem;margin-bottom:2.5rem}
.sec-head p:last-child{margin-bottom:0}

/* Hero */
.hero{padding-top:clamp(2.5rem,6vw,4.5rem)}
.hero-top{display:grid;gap:1.8rem;align-items:end}
.hero-lede p{font-size:1.15rem;max-width:34rem}
.actions{display:flex;flex-wrap:wrap;gap:.8rem}
.hero-stage{position:relative;margin-top:2.5rem;border-radius:28px 160px 28px 28px;overflow:hidden;background:var(--glass);border:2px solid var(--ink)}
.hero-pic{position:relative;line-height:0}
.hero-pic img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-pic::after{content:"";position:absolute;inset:0;background:var(--tint);opacity:.3;mix-blend-mode:color;pointer-events:none;transition:background .3s}
.ph-panel{background:var(--paper);padding:1rem 1.2rem 1.1rem;border-top:2px solid var(--ink)}
.ph-panel label{font-family:var(--head);font-weight:700;font-size:1.05rem;display:block;margin-bottom:.5rem}
.hint{font-family:var(--body);font-weight:400;font-size:.9rem;color:var(--ink2)}
.ph-row{display:flex;align-items:center;gap:1rem}
.ph-row output{font-family:var(--mono);font-weight:700;font-size:1.5rem;min-width:3.2ch}
.ph-note{margin:.6rem 0 0;font-size:.98rem;line-height:1.5}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:12px;border-radius:99px;background:linear-gradient(90deg,var(--yellow),var(--green),var(--blue));border:1px solid var(--ink);cursor:pointer;--thumb:#2fa36b}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:var(--thumb);border:3px solid var(--ink)}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--thumb);border:3px solid var(--ink)}
@media (min-width:900px){
  .hero-top{grid-template-columns:1.4fr 1fr;gap:3rem}
}
@media (min-width:760px){
  .ph-panel{position:absolute;left:1.4rem;bottom:1.4rem;width:min(430px,calc(100% - 2.8rem));border:2px solid var(--ink);border-radius:18px}
}

/* Story */
.story{background:var(--paper)}
.story-grid{display:grid;gap:2.5rem;align-items:center}
.story-fig{margin:0}
.story-fig img{width:100%;border-radius:200px 24px 24px 24px;border:2px solid var(--ink)}
figcaption{font-family:var(--mono);font-size:.82rem;color:var(--ink2);margin-top:.7rem}
.story-text p{max-width:36rem}
@media (min-width:900px){
  .story-grid{grid-template-columns:1fr 1fr;gap:4rem}
}

/* Services */
.services{background:var(--glass)}
.cards{display:grid;gap:1.2rem;grid-template-columns:1fr}
.card{background:#fff;border:2px solid var(--ink);border-radius:18px;padding:1.6rem 1.4rem 1.4rem;position:relative;overflow:hidden;transition:transform .25s}
.card::before{content:"";position:absolute;left:0;top:0;width:100%;height:12px;background:var(--cc);transition:height .3s}
.card:hover::before{height:100%;opacity:.14}
.card:hover{transform:translateY(-4px)}
.card>*{position:relative}
.card p{margin:0}
.num{display:inline-grid;place-items:center;width:2.2rem;height:2.2rem;border-radius:50%;background:var(--cc);color:var(--ink);font-family:var(--mono);font-weight:700;margin:.5rem 0 1rem;border:2px solid var(--ink)}
.c1{--cc:#f0c02b}.c2{--cc:#b4d155}.c3{--cc:#5cc08a}.c4{--cc:#4cb9b0}.c5{--cc:#7fa3f0}
.more{margin:2rem 0 0}
@media (min-width:700px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .c5{grid-column:1/-1}
}
@media (min-width:1000px){
  .cards{grid-template-columns:repeat(6,1fr)}
  .c1,.c2{grid-column:span 3}
  .c3,.c4,.c5{grid-column:span 2}
}

/* Detail */
.detail-grid{display:grid;gap:2rem}
.detail figure{margin:0}
.d1 img{width:100%;border-radius:24px;border:2px solid var(--ink)}
.d2 img{width:100%;border-radius:50%;border:2px solid var(--ink)}
.d2{max-width:340px}
.d-text p{max-width:34rem}
@media (min-width:900px){
  .detail-grid{grid-template-columns:5fr 6fr;grid-template-areas:"a b" "a c";gap:2rem 4rem;align-items:start}
  .d1{grid-area:a}
  .d-text{grid-area:b;padding-top:2rem}
  .d2{grid-area:c;justify-self:end;max-width:340px;margin-top:-1rem}
}

/* Why */
.why{background:var(--ink);color:var(--paper)}
.why .tag{color:#c7d8d6}
.why-grid{display:grid;gap:2rem 3rem;grid-template-columns:1fr;counter-reset:w}
.why-grid>div{border-top:3px solid var(--yellow);padding-top:1rem;counter-increment:w}
.why-grid>div:nth-child(2){border-color:#7fd0a3}
.why-grid>div:nth-child(3){border-color:#8fb0ff}
.why-grid>div:nth-child(4){border-color:#ff8fb8}
.why-grid h3::before{content:"0" counter(w);display:block;font-family:var(--mono);font-size:.85rem;font-weight:400;color:#c7d8d6;margin-bottom:.4rem}
.why-grid p{margin:0;color:#dbe7e4}
@media (min-width:760px){.why-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1100px){.why-grid{grid-template-columns:repeat(4,1fr);gap:2rem}}

/* Process */
.process{background:var(--glass)}
.proc-grid{display:grid;gap:2.5rem}
.chart{background:#fff;border:2px solid var(--ink);border-radius:20px;padding:1rem 1rem 1.2rem;align-self:start}
.chart svg{width:100%;height:auto;display:block}
.curve{stroke-linecap:butt}
.now{display:none}
.js .curve{stroke-dasharray:1;stroke-dashoffset:var(--d,0)}
.js .now{display:block}
.legend{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;font-family:var(--mono);font-size:.85rem;margin:.6rem 0 .4rem}
.legend .k::before{content:"";display:inline-block;width:1.4rem;height:5px;margin-right:.4rem;vertical-align:middle;border-radius:3px}
.k1::before{background:#2f7d3a}.k2::before{background:#b01f66}.k3::before{background:#d9561a}
.legend .axis{margin-left:auto;color:var(--ink2)}
.note{font-size:.92rem;color:var(--ink2);margin:0}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:1.4rem;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding-left:3.4rem}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:2.4rem;height:2.4rem;display:grid;place-items:center;border-radius:50%;border:2px solid var(--ink);background:var(--yellow);font-family:var(--mono);font-weight:700}
.steps li:nth-child(2)::before{background:#b4d155}
.steps li:nth-child(3)::before{background:#5cc08a}
.steps li:nth-child(4)::before{background:#7fa3f0}
.steps h3{margin-bottom:.3em}
.steps p{margin:0}
.proc-fig{margin:3rem 0 0}
.proc-fig img{width:100%;max-height:560px;object-fit:cover;border-radius:24px;border:2px solid var(--ink)}
@media (min-width:960px){
  .proc-grid{grid-template-columns:1.1fr 1fr;gap:3.5rem}
  .chart{position:sticky;top:6rem}
}

/* Atmosphere */
.atmosphere{padding:0;background:var(--ink);color:var(--paper)}
.atmosphere figure{margin:0}
.atmosphere img{width:100%;height:clamp(460px,62vw,760px);object-fit:cover}
.atmosphere::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,38,48,.1) 20%,rgba(12,38,48,.88));pointer-events:none}
.atmosphere .wrap{position:absolute;left:50%;transform:translateX(-50%);bottom:0;z-index:2;padding-bottom:clamp(1.8rem,5vw,4rem)}
.atm-text{max-width:36rem}
.atm-text .tag{color:#d3e2df}
.atm-text p:last-child{margin:0}
.atm-text h2{margin-bottom:.4em}

/* FAQ */
.faq-grid{display:grid;gap:2rem}
.faq-list details{border-top:2px solid var(--ink)}
.faq-list details:last-child{border-bottom:2px solid var(--ink)}
.faq-list summary{list-style:none;cursor:pointer;font-family:var(--head);font-weight:700;font-size:1.25rem;line-height:1.2;padding:1.1rem 2.6rem 1.1rem 0;position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:.2rem;top:50%;transform:translateY(-50%);width:1.9rem;height:1.9rem;display:grid;place-items:center;border:2px solid var(--ink);border-radius:50%;font-family:var(--mono);font-size:1.1rem;line-height:1;transition:background .2s}
.faq-list details[open] summary::after{content:"–";background:var(--yellow)}
.faq-list summary:hover{color:var(--blue-d)}
.faq-list details p{margin:0 0 1.2rem;max-width:40rem}
@media (min-width:900px){
  .faq-grid{grid-template-columns:1fr 1.5fr;gap:4rem;align-items:start}
  .faq .sec-head{position:sticky;top:6rem;margin-bottom:0}
}

/* Contact */
.contact{background:var(--glass)}
.contact-grid{display:grid;gap:2.5rem}
.c-text p{max-width:32rem}
.form{background:#fff;border:2px solid var(--ink);border-radius:20px;padding:1.6rem 1.4rem;position:relative;overflow:hidden}
.form::before{content:"";position:absolute;left:0;top:0;right:0;height:10px;background:linear-gradient(90deg,var(--yellow),var(--green),var(--blue))}
.field{margin:.6rem 0 1.1rem}
.field label{display:block;font-family:var(--head);font-weight:700;margin-bottom:.35rem}
.field input,.field textarea{width:100%;font:inherit;color:var(--ink);background:var(--paper);border:2px solid var(--ink);border-radius:10px;padding:.7rem .8rem}
.field textarea{resize:vertical;min-height:8rem}
.field input:focus-visible,.field textarea:focus-visible{outline:3px solid var(--blue-d);outline-offset:2px}
@media (min-width:900px){
  .contact-grid{grid-template-columns:1fr 1.1fr;gap:4rem;align-items:start}
  .form{padding:2rem 2rem 1.8rem}
}

/* Footer */
.site-footer{background:var(--ink);color:var(--paper);padding:2.5rem 0}
.foot{display:flex;flex-wrap:wrap;gap:1.5rem 3rem;justify-content:space-between;align-items:flex-start}
.foot-brand{font-family:var(--head);font-weight:700;font-size:1.5rem;margin:0}
.foot-sub{margin:.2rem 0 0;color:#c7d8d6}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.6rem 1.6rem}
.site-footer a{font-family:var(--head);font-weight:600;text-decoration:none;border-bottom:2px solid var(--yellow)}
.site-footer a:hover{color:var(--yellow)}

/* Mobile nav */
@media (max-width:859px){
  .js .menu-btn{display:inline-block}
  .js .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:2px solid var(--ink);padding:1rem 1.25rem 1.4rem}
  .js .nav.open{display:block}
  .nav ul{flex-direction:column;align-items:flex-start;gap:.9rem}
  .nav a{font-size:1.2rem}
  .bar{flex-wrap:wrap}
  .no-js-fix{display:none}
  html:not(.js) .nav{width:100%}
  html:not(.js) .nav ul{flex-wrap:wrap;gap:.6rem 1.2rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .card:hover{transform:none}
  .js .now{display:none}
}

/* inner pages */
/* Akvaryum Rehberi · iç sayfalar (yalnızca pg- önekli sınıflar) */

section.pg-hero{padding:clamp(2.2rem,5vw,3.5rem) 0 clamp(1.8rem,4vw,3rem)}
.pg-title{font-size:clamp(2.1rem,6.2vw,4.2rem);line-height:.98;overflow-wrap:break-word}

/* Konu listesi */
.pg-topics{display:grid;gap:0;border-bottom:2px solid var(--ink)}
.pg-topic{display:grid;gap:.9rem 3rem;padding:1.8rem 0;border-top:2px solid var(--ink);min-width:0}
.pg-topic-head{display:flex;align-items:flex-start;gap:1rem;min-width:0}
.pg-topic-head .num{flex:none;margin:.1rem 0 0}
.pg-topic-head h3{margin:0}
.pg-topic-body{min-width:0}
.pg-topic-body p{max-width:38rem}
.pg-topic-body p:last-child{margin-bottom:0}
.pg-t1{--cc:#f0c02b}
.pg-t2{--cc:#b4d155}
.pg-t3{--cc:#5cc08a}
.pg-t4{--cc:#4cb9b0}
.pg-t5{--cc:#7fa3f0}
@media (min-width:900px){
  .pg-topic{grid-template-columns:minmax(0,5fr) minmax(0,7fr);padding:2.2rem 0}
}

/* Kapanış çağrısı */
.pg-cta-inner{max-width:42rem}
.pg-cta-inner p:last-child{margin-bottom:0}

/* İletişim notu ve ikili yerleşim */
.pg-note{border-left:4px solid var(--yellow);padding-left:1rem}
.pg-split{display:grid;gap:2rem}
.pg-split>*{min-width:0}
.pg-split .sec-head{margin-bottom:0}
@media (min-width:900px){
  .pg-split{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:4rem;align-items:start}
}

.wpf-legal { padding: clamp(3rem, 8vw, 7rem) clamp(1.25rem, 4vw, 2rem); }
.wpf-legal .wpf-legal__inner { max-width: 72ch; margin: 0 auto; }
.wpf-legal .wpf-legal__inner h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); line-height: 1.1; margin: .2em 0 .8em; }
.wpf-legal .wpf-legal__inner h2 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); line-height: 1.25; margin: 2.2em 0 .6em; }
.wpf-legal .wpf-legal__inner p, .wpf-legal .wpf-legal__inner li { line-height: 1.75; max-width: none; }
.wpf-legal .wpf-legal__inner ul { padding-left: 1.2em; margin: 0 0 1em; }
.wpf-legal .wpf-legal__inner li { margin: .35em 0; list-style: disc; }
.wpf-legal .wpf-legal__inner a { color: inherit; text-decoration: underline; text-underline-offset: .15em; }
.wpf-legal .wpf-legal__meta { font-size: .875rem; opacity: .7; margin: 0; }
.wpf-legal .wpf-legal__table { overflow-x: auto; margin: 1em 0 1.5em; }
.wpf-legal table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.wpf-legal th, .wpf-legal td { text-align: left; vertical-align: top; padding: .7em .8em; border-bottom: 1px solid rgba(127,127,127,.3); }
.wpf-legal code { font-size: .85em; word-break: break-word; }
.wpf-legal-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.4rem; grid-column: 1 / -1;
  width: 100%; box-sizing: border-box; padding: 1.1rem clamp(1.25rem, 4vw, 2rem) 0; font-size: .875rem; }
.wpf-legal-links a { color: inherit; opacity: .85; text-decoration: underline; text-underline-offset: .15em; }
.wpf-legal-links a:hover, .wpf-legal-links a:focus-visible { opacity: 1; }

.wpf-consent { position: fixed; z-index: 99998; left: 16px; right: 16px; bottom: 16px; max-width: 27rem; box-sizing: border-box;
  padding: 20px 22px; border-radius: 14px; border: 1px solid rgba(127,127,127,.28); box-shadow: 0 14px 44px rgba(0,0,0,.24);
  font-size: 15px; line-height: 1.55; text-align: left; }
.wpf-consent[hidden] { display: none; }
.wpf-consent .wpf-consent__title { margin: 0 0 6px; font-weight: 700; font-size: 1.05em; }
.wpf-consent .wpf-consent__text { margin: 0 0 16px; max-width: none; }
.wpf-consent .wpf-consent__text a { color: inherit; text-decoration: underline; }
.wpf-consent .wpf-consent__actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.wpf-consent .wpf-consent__actions button { cursor: pointer; margin: 0; width: auto; }
.wpf-consent .wpf-consent__primary, .wpf-consent .wpf-consent__secondary { font: inherit; font-weight: 600; padding: 10px 18px; border-radius: 8px; }
.wpf-consent .wpf-consent__primary { background: #1c1b19; color: #fff; border: 1px solid #1c1b19; }
.wpf-consent .wpf-consent__secondary { background: transparent; color: inherit; border: 1px solid currentColor; }
.wpf-consent button:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }