/* Kahve Rehberi — "calm notebook". See docs/style-guide.md */
:root{--paper:#FAF7F2;--card:#F3ECE2;--ink:#2B211C;--muted:#6B5E55;--line:#E6DED3;--accent:#9A5220;--crema:#B5652B;--r:12px;--gap:16px;
font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--paper);-webkit-text-size-adjust:100%}
*,*::before,*::after{box-sizing:border-box}
body{margin:0}
h1,h2,h3{line-height:1.25;margin:1.6em 0 .5em;font-weight:700}
h1{font-size:1.75rem;margin-top:.6em}h2{font-size:1.3rem}h3{font-size:1.1rem}
p,ul,ol{margin:0 0 1em}
a{color:var(--accent);text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--crema);outline-offset:2px}
.num,.params,.calc,.table{font-variant-numeric:tabular-nums}
.wrap{max-width:720px;margin:0 auto;padding:0 var(--gap)}
.muted{color:var(--muted)}
.lead{font-size:1.06rem}
.icon{width:20px;height:20px;flex:none;stroke:var(--crema);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--paper);padding:8px;z-index:9}

/* Header / nav */
.site-header{border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:56px}
.logo{white-space:nowrap;font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo span{color:var(--accent)}
.nav{display:flex;gap:0;margin:0;padding:0;list-style:none}
.nav a{display:block;padding:13px 5px;color:var(--ink);text-decoration:none;font-size:.85rem}
.nav li:last-child a{padding-right:0}
.nav a[aria-current]{color:var(--accent);font-weight:600}
.crumbs{font-size:.88rem;color:var(--muted);margin:12px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap}
.crumbs li+li::before{content:"›";margin:0 6px}
.crumbs a{color:var(--muted)}

/* Pills (home + calculator) */
.pills{display:flex;gap:8px;overflow-x:auto;padding:4px 0 8px;margin:0;list-style:none;scrollbar-width:none}
.pills::-webkit-scrollbar{display:none}
.pill{flex:none;display:inline-flex;align-items:center;min-height:48px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--ink);font:inherit;font-size:.94rem;text-decoration:none;cursor:pointer;white-space:nowrap}
.pill[aria-pressed=true],.pill[aria-current]{background:var(--accent);border-color:var(--accent);color:#fff}

/* Home */
.hero{padding:24px 0 8px}
.hero h1{font-size:2rem;margin:0 0 .3em}
.tagline{color:var(--muted);font-size:1.1rem;margin:0 0 16px}
.cards{display:grid;gap:12px;grid-template-columns:1fr;margin:0;padding:0;list-style:none}
.card{display:block;border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;color:var(--ink);text-decoration:none;background:var(--paper)}
.card:hover{border-color:var(--crema)}
.card h3{margin:0 0 4px;display:flex;align-items:center;gap:8px}
.card p{margin:0;color:var(--muted);font-size:.94rem}
.card.featured{background:var(--card);border-color:var(--crema)}
.badge{display:inline-block;font-size:.75rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.05em}

/* Parameter card */
.params{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin:16px 0 20px}
.param{position:relative;background:var(--card);padding:10px 12px 10px 42px;margin:0;min-width:0}
.param .icon{position:absolute;left:12px;top:11px}
.param dt{font-size:.8rem;color:var(--muted);line-height:1.3}
.param dd{margin:0;font-weight:700;line-height:1.3}

/* Calculator */
.calc{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);margin:0 0 24px}
details.calc>summary{list-style:none;cursor:pointer;padding:14px 16px;font-weight:700;display:flex;justify-content:space-between;align-items:center;min-height:48px}
details.calc>summary::-webkit-details-marker{display:none}
details.calc>summary::after{content:"+";font-size:1.4rem;color:var(--accent);line-height:1}
details.calc[open]>summary::after{content:"−"}
.calc-body{padding:0 16px 16px}
section.calc .calc-body{padding-top:16px}
.field{margin:0 0 16px;border:0;padding:0;min-width:0}
.field>legend,.field>label{display:block;font-size:.88rem;color:var(--muted);margin-bottom:6px;padding:0}
.stepper{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stepper button{width:48px;height:48px;border:0;background:var(--card);color:var(--ink);font:inherit;font-size:1.4rem;cursor:pointer}
.stepper button:disabled{color:var(--line);cursor:default}
.stepper input{width:64px;height:48px;border:0;border-inline:1px solid var(--line);text-align:center;font:inherit;font-weight:700;background:var(--paper);color:var(--ink);-moz-appearance:textfield;appearance:textfield}
.stepper input::-webkit-inner-spin-button{-webkit-appearance:none}
.unit{margin-left:10px;color:var(--muted)}
.segment{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.segment button{min-height:48px;border:0;background:var(--paper);font:inherit;font-size:.94rem;color:var(--ink);cursor:pointer}
.segment button+button{border-left:1px solid var(--line)}
.segment button[aria-pressed=true]{background:var(--accent);color:#fff;font-weight:600}
.result{background:var(--card);border-radius:var(--r);padding:14px 16px;margin:0;border-left:4px solid var(--crema)}
.result-main{font-size:1.35rem;font-weight:800;line-height:1.3;margin:0;color:var(--ink)}
.result-main b{color:var(--accent)}
.result-note{font-size:.88rem;color:var(--muted);margin:4px 0 0}

/* Steps */
.steps{list-style:none;counter-reset:s;padding:0;margin:0 0 24px}
.steps>li{counter-increment:s;position:relative;padding:0 0 16px 44px;margin:0}
.steps>li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--card);border:1px solid var(--crema);color:var(--accent);font-weight:700;text-align:center;line-height:28px;font-size:.94rem}
.steps>li:not(:last-child)::after{content:"";position:absolute;left:15px;top:34px;bottom:4px;border-left:1px dashed var(--line)}
.steps b{font-variant-numeric:tabular-nums}

/* Chips */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px;padding:0;list-style:none}
.chip{display:inline-flex;align-items:center;min-height:48px;padding:0 14px;border-radius:999px;background:var(--card);color:var(--ink);text-decoration:none;font-size:.94rem;border:1px solid var(--line)}
.chip:hover{border-color:var(--crema)}
.chip::after{content:"→";margin-left:6px;color:var(--accent)}

/* Problems page */
.problem{border-top:1px solid var(--line);padding-top:8px;scroll-margin-top:16px}
.problem:target{background:var(--card);border-radius:var(--r);padding:8px 12px 4px;margin:0 -12px}
.problem h2{margin-top:.6em}
.problem dl{margin:0 0 16px}
.problem dt{font-weight:700;font-size:.88rem;color:var(--muted);margin-top:8px}
.problem dd{margin:0}
.fix{border-left:4px solid var(--crema);padding:4px 0 4px 12px;margin:8px 0 16px}

/* Table (Türk kahvesi gram table) */
.table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:.94rem}
.table th,.table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
.table th{font-size:.8rem;color:var(--muted);font-weight:600}
.table td:not(:first-child),.table th:not(:first-child){text-align:right}

/* Note / tip */
.tip{background:var(--card);border-radius:var(--r);padding:12px 16px;margin:0 0 20px;font-size:.94rem}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:48px;padding:24px 0 32px;font-size:.88rem;color:var(--muted)}
.site-footer a{color:var(--muted)}
.site-footer ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:4px 16px}

@media (min-width:600px){
.cards{grid-template-columns:1fr 1fr}
.pills{flex-wrap:wrap}
.params{grid-template-columns:repeat(3,1fr)}
h1{font-size:2.1rem}.hero h1{font-size:2.5rem}
}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
@media print{.site-header,.site-footer,.calc{display:none}}