/* ===========================================================
   TopoCheck — stylesheet
   Παλέτα: βαθύ ναυτικό μπλε + ηλεκτρικό μπλε accent + topo πράσινο
   =========================================================== */
:root{
  --navy:#0f2747;
  --navy-2:#13325c;
  --blue:#1f6feb;
  --blue-2:#3b8bff;
  --ink:#0d1b2a;
  --slate:#54657a;
  --line:#e3e9f2;
  --bg:#f6f9fd;
  --card:#ffffff;
  --ok:#1aa663;
  --ok-bg:#e7f7ee;
  --warn:#c98a04;
  --warn-bg:#fdf4dd;
  --err:#dc3a3a;
  --err-bg:#fcecec;
  --info:#3b6fb0;
  --info-bg:#eaf1fb;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px -12px rgba(15,39,71,.25);
  --shadow-lg:0 24px 60px -20px rgba(15,39,71,.35);
  --font:'Manrope',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'Cascadia Code',Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.18;margin:0;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img,svg{display:block}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-family:inherit;font-weight:700;font-size:.96rem;cursor:pointer;
  padding:.7em 1.3em;border-radius:999px;border:1.5px solid transparent;
  transition:transform .15s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-lg{padding:.95em 1.8em;font-size:1.02rem}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px -10px rgba(31,111,235,.7)}
.btn-primary:hover{background:var(--blue-2);box-shadow:0 14px 30px -10px rgba(31,111,235,.8)}
.btn-outline{background:transparent;border-color:var(--blue);color:var(--blue)}
.btn-outline:hover{background:rgba(31,111,235,.08)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-soft{background:#eef3fb;color:var(--navy);border-color:transparent;font-weight:600}
.btn-soft:hover{background:#e1ebf9}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:.6em;font-size:1.25rem;font-weight:800}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;color:var(--blue);
  background:linear-gradient(135deg,#eaf1fb,#dbe8fc);border-radius:10px}
.brand-mark svg{width:22px;height:22px}
.brand-name{letter-spacing:-.03em}
.brand-name strong{color:var(--blue)}
.main-nav{display:flex;align-items:center;gap:1.6rem;font-weight:600;font-size:.95rem}
.main-nav a:not(.btn){color:var(--slate)}
.main-nav a:not(.btn):hover{color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#eaf1fb;
  background:radial-gradient(1200px 600px at 80% -10%,#1d4b8a 0%,transparent 60%),
             linear-gradient(160deg,var(--navy) 0%,#0a1d38 100%)}
.hero-bg{position:absolute;inset:0;opacity:.5;
  background-image:
    repeating-radial-gradient(circle at 78% 22%,rgba(120,170,255,.10) 0 2px,transparent 2px 26px),
    repeating-radial-gradient(circle at 78% 22%,rgba(120,170,255,.06) 0 2px,transparent 2px 52px);
  mask-image:linear-gradient(to bottom,#000,transparent 90%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;
  align-items:center;padding:88px 24px 96px}
.badge-pill{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.02em;
  padding:.45em 1em;border-radius:999px;color:#bcd6ff;
  background:rgba(120,170,255,.12);border:1px solid rgba(120,170,255,.28)}
.hero h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:800;margin:.5em 0 .35em;color:#fff}
.grad{background:linear-gradient(90deg,#6db1ff,#a9d0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.16rem;color:#c4d6f0;max-width:34em;margin:0 0 1.8em}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:42px}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats strong{font-size:1.7rem;color:#fff;font-weight:800;letter-spacing:-.02em}
.hero-stats span{font-size:.85rem;color:#9fb6d6}

/* Hero mini-report card */
.hero-card{display:flex;justify-content:center}
.mini-report{width:100%;max-width:340px;background:#fff;color:var(--ink);
  border-radius:18px;box-shadow:var(--shadow-lg);overflow:hidden;transform:rotate(1.5deg);
  animation:floaty 6s ease-in-out infinite}
@keyframes floaty{50%{transform:rotate(1.5deg) translateY(-8px)}}
.mini-head{display:flex;align-items:center;gap:7px;padding:14px 18px;border-bottom:1px solid var(--line);background:#fafcff}
.mini-head .dot{width:11px;height:11px;border-radius:50%}
.dot-ok{background:var(--ok)}.dot-warn{background:var(--warn)}.dot-err{background:var(--err)}
.mini-title{margin-left:auto;font-weight:700;font-size:.9rem;color:var(--slate)}
.mini-row{display:flex;justify-content:space-between;align-items:center;padding:13px 18px;font-size:.95rem;border-bottom:1px solid #f1f5fb}
.mini-row b{font-size:.78rem;font-weight:800;padding:.2em .7em;border-radius:999px}
.mini-row.ok b{color:var(--ok);background:var(--ok-bg)}
.mini-row.err b{color:var(--err);background:var(--err-bg)}
.mini-foot{padding:12px 18px;font-family:var(--mono);font-size:.78rem;color:var(--slate);background:#fafcff}

/* ---------- Sections ---------- */
.section{padding:88px 0}
.section-alt{background:linear-gradient(180deg,#fff,#f1f6fd)}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:800;color:var(--blue);margin:0 0 .5em}
.section-title{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:800;margin-bottom:1.4em;color:var(--navy)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow);position:relative}
.step-no{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  font-weight:800;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue-2));margin-bottom:14px}
.step h3{font-size:1.12rem;margin-bottom:.4em;color:var(--navy)}
.step p{margin:0;color:var(--slate);font-size:.96rem}

/* Features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feat-ico{width:48px;height:48px;display:grid;place-items:center;font-size:1.5rem;color:var(--blue);
  background:linear-gradient(135deg,#eaf1fb,#dbe8fc);border-radius:13px;margin-bottom:16px}
.feature h3{font-size:1.18rem;margin-bottom:.45em;color:var(--navy)}
.feature p{margin:0;color:var(--slate)}
.feature-cta{background:linear-gradient(150deg,var(--navy),#163a6b);color:#dce9fb;border:none}
.feature-cta h3{color:#fff}.feature-cta p{color:#b8cdec}

/* ---------- App ---------- */
.app{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lg);overflow:hidden}
.tabs{display:flex;gap:4px;padding:10px;background:#f3f7fd;border-bottom:1px solid var(--line)}
.tab{flex:1;font-family:inherit;font-weight:700;font-size:.96rem;color:var(--slate);
  background:transparent;border:none;border-radius:12px;padding:.85em 1em;cursor:pointer;transition:all .18s}
.tab:hover{color:var(--navy)}
.tab.is-active{background:#fff;color:var(--blue);box-shadow:var(--shadow)}
.tab-panel{display:none;padding:32px}
.tab-panel.is-active{display:block}

/* Dropzone */
.dropzone{border:2.5px dashed #b9cef0;border-radius:18px;background:#f7fafe;
  padding:54px 24px;text-align:center;cursor:pointer;transition:all .2s}
.dropzone:hover,.dropzone:focus{border-color:var(--blue);background:#eef5ff;outline:none}
.dropzone.drag{border-color:var(--blue);background:#e6f0ff;transform:scale(1.01)}
.dz-ico{font-size:2.6rem;color:var(--blue);line-height:1}
.dz-title{font-size:1.18rem;font-weight:700;margin:.5em 0 .2em;color:var(--navy)}
.dz-title .link{color:var(--blue);text-decoration:underline}
.dz-sub{margin:0;color:var(--slate);font-size:.92rem}
.hint{color:var(--slate);font-size:.9rem;margin:16px 2px 0}
.hint code{font-family:var(--mono);background:#eef3fb;padding:.1em .45em;border-radius:6px;font-size:.85em}

/* Form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.card{background:#fbfdff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 22px;margin:0}
.card legend{font-weight:800;color:var(--navy);font-size:.98rem;padding:0 8px;margin-left:-4px}
.form-grid label{display:flex;flex-direction:column;font-size:.82rem;font-weight:700;color:var(--slate);gap:.4em;margin-bottom:12px}
.form-grid input[type=text]{font-family:inherit;font-size:.96rem;color:var(--ink);font-weight:500;
  padding:.62em .8em;border:1.5px solid var(--line);border-radius:10px;background:#fff;transition:border .15s,box-shadow .15s}
.form-grid input[type=text]:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,111,235,.14)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .card:nth-child(2),.form-actions{grid-column:1 / -1}

/* Vertices table */
.vtable-wrap{max-height:260px;overflow:auto;border:1px solid var(--line);border-radius:10px;background:#fff}
.vtable{width:100%;border-collapse:collapse;font-size:.9rem}
.vtable th{position:sticky;top:0;background:#eff5fd;color:var(--navy);font-weight:700;text-align:left;padding:9px 10px;font-size:.78rem;z-index:1}
.vtable td{padding:5px 8px;border-top:1px solid #f0f4fa}
.vtable td:first-child{color:var(--slate);width:34px;text-align:center;font-family:var(--mono);font-size:.8rem}
.vtable input{width:100%;border:1px solid transparent;background:transparent;font-family:var(--mono);font-size:.86rem;padding:.4em .5em;border-radius:7px;color:var(--ink)}
.vtable input:focus{outline:none;border-color:var(--blue);background:#f7fafe}
.vrm{cursor:pointer;color:var(--err);background:none;border:none;font-size:1.1rem;line-height:1;padding:0 6px;opacity:.6}
.vrm:hover{opacity:1}
.vtable-actions{display:flex;align-items:center;justify-content:space-between;margin-top:12px}
.vcount{font-size:.85rem;color:var(--slate);font-weight:600}
.paste{margin-top:14px}
.paste summary{cursor:pointer;font-weight:700;color:var(--blue);font-size:.9rem}
.paste textarea{width:100%;font-family:var(--mono);font-size:.85rem;border:1.5px solid var(--line);border-radius:10px;padding:.7em;margin:.6em 0;resize:vertical}
.paste textarea:focus{outline:none;border-color:var(--blue)}

/* Checks */
.checks{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px}
.chk{display:flex;align-items:center;gap:.55em;font-size:.9rem;font-weight:600;color:var(--ink);cursor:pointer}
.chk input{width:18px;height:18px;accent-color:var(--blue)}
.form-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}

/* Sample box */
.sample-box{max-width:680px}
.sample-box h3{color:var(--navy);font-size:1.3rem;margin-bottom:.5em}
.sample-box p{color:var(--slate);margin:0 0 1.4em}

/* Loading */
.loading{display:flex;align-items:center;gap:14px;justify-content:center;padding:30px;color:var(--slate);font-weight:600}
.spinner{width:26px;height:26px;border:3px solid #d6e3f5;border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Alert */
.alert{margin:0 32px 24px;padding:14px 18px;border-radius:12px;font-size:.95rem;font-weight:600}
.alert.warn{background:var(--warn-bg);color:#8a5d00;border:1px solid #f0d896}
.alert.err{background:var(--err-bg);color:#a82424;border:1px solid #f3bdbd}
.alert.info{background:var(--info-bg);color:#27517f;border:1px solid #c3d8f3}

/* ---------- Results ---------- */
.results{border-top:1px solid var(--line);background:#fafcff;padding:32px}
.result-head{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-bottom:24px}
.score{position:relative;width:120px;height:120px;flex-shrink:0}
.score svg{transform:rotate(-90deg)}
.score circle{fill:none;stroke-width:11}
.score .track{stroke:#e6edf7}
.score .prog{stroke:var(--ok);stroke-linecap:round;transition:stroke-dashoffset 1s ease,stroke .4s}
.score-num{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.score-num b{font-size:2rem;font-weight:800;color:var(--navy);line-height:1}
.score-num span{font-size:.8rem;color:var(--slate)}
.verdict{flex:1;min-width:220px}
.verdict h3{font-size:1.4rem;margin-bottom:.25em}
.verdict p{margin:0;color:var(--slate)}
.verdict.ok h3{color:var(--ok)}.verdict.warn h3{color:var(--warn)}.verdict.error h3{color:var(--err)}
.result-actions{margin-left:auto}

.summary-chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.chip{display:inline-flex;align-items:center;gap:.5em;font-weight:700;font-size:.85rem;padding:.45em 1em;border-radius:999px}
.chip.ok{background:var(--ok-bg);color:var(--ok)}
.chip.warn{background:var(--warn-bg);color:var(--warn)}
.chip.error{background:var(--err-bg);color:var(--err)}
.chip.info{background:var(--info-bg);color:var(--info)}

/* Section cards */
.sections{display:flex;flex-direction:column;gap:16px}
.rsec{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.rsec-head{display:flex;align-items:center;gap:14px;padding:18px 22px;cursor:pointer}
.rsec-badge{width:12px;height:12px;border-radius:50%;flex-shrink:0}
.rsec-badge.ok{background:var(--ok)}.rsec-badge.warn{background:var(--warn)}.rsec-badge.error{background:var(--err)}
.rsec-titles{flex:1}
.rsec-titles h3{font-size:1.12rem;color:var(--navy)}
.rsec-titles p{margin:0;color:var(--slate);font-size:.88rem}
.rsec-mini{display:flex;gap:6px;font-size:.76rem;font-weight:800}
.rsec-mini span{padding:.2em .6em;border-radius:7px}
.rsec-mini .m-ok{background:var(--ok-bg);color:var(--ok)}
.rsec-mini .m-warn{background:var(--warn-bg);color:var(--warn)}
.rsec-mini .m-error{background:var(--err-bg);color:var(--err)}
.rsec-caret{color:var(--slate);transition:transform .2s}
.rsec.open .rsec-caret{transform:rotate(180deg)}
.rsec-body{display:none;padding:0 22px 18px;border-top:1px solid var(--line)}
.rsec.open .rsec-body{display:block}
.finding{display:flex;gap:13px;padding:15px 0;border-bottom:1px solid #f1f5fb}
.finding:last-child{border-bottom:none}
.f-ico{flex-shrink:0;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-weight:800;font-size:.85rem;margin-top:2px}
.f-ico.ok{background:var(--ok-bg);color:var(--ok)}
.f-ico.warn{background:var(--warn-bg);color:var(--warn)}
.f-ico.error{background:var(--err-bg);color:var(--err)}
.f-ico.info{background:var(--info-bg);color:var(--info)}
.f-body h4{font-size:1rem;margin:0 0 .2em;color:var(--ink)}
.f-body p{margin:0;color:var(--slate);font-size:.93rem}
.f-sugg{margin-top:.45em !important;font-size:.88rem !important;color:var(--blue) !important;font-weight:600}
.f-sugg::before{content:"→ ";font-weight:800}

/* ---------- Pricing ---------- */
.pricing{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.plan{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);position:relative}
.plan h3{font-size:1.25rem;color:var(--navy);margin-bottom:.2em}
.plan-for{font-size:.85rem;font-weight:700;color:var(--blue);margin:0 0 1em}
.plan p:last-child{margin:0;color:var(--slate);font-size:.94rem}
.plan-featured{background:linear-gradient(155deg,var(--navy),#143864);color:#dce9fb;border:none;transform:translateY(-6px)}
.plan-featured h3{color:#fff}.plan-featured p:last-child{color:#b8cdec}
.plan-tag{position:absolute;top:-12px;right:20px;background:var(--blue);color:#fff;font-size:.72rem;font-weight:800;padding:.3em .9em;border-radius:999px}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#c4d6f0;padding:56px 0 40px}
.footer-inner{display:grid;grid-template-columns:1fr 2fr;gap:30px;align-items:start}
.foot-brand .brand-name{color:#fff;font-size:1.4rem;font-weight:800}
.foot-brand p{margin:.5em 0 0;color:#9fb6d6;font-size:.95rem}
.disclaimer{font-size:.86rem;color:#90a8cb;line-height:1.7}

/* ---------- Parcel view (σκαρίφημα + στοιχεία) ---------- */
.parcel-view{display:grid;grid-template-columns:1.2fr 1fr;gap:18px;margin-bottom:26px}
.parcel-sketch{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:14px;display:flex;flex-direction:column;align-items:center;
  background-image:linear-gradient(rgba(31,111,235,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(31,111,235,.05) 1px,transparent 1px);
  background-size:22px 22px}
.parcel-sketch svg{width:100%;height:auto;max-height:340px}
.parcel-sketch .vlabel{font-family:var(--mono);font-size:9px;fill:var(--slate);text-anchor:middle;font-weight:500}
.parcel-sketch .ncap{font-size:11px;fill:var(--slate);text-anchor:middle;font-weight:800}
.sketch-cap{margin-top:8px;font-size:.85rem;font-weight:700;color:var(--navy)}
.sketch-cap.err{color:var(--err)}
.parcel-sketch.empty{justify-content:center;color:var(--slate);font-size:.92rem;min-height:160px;padding:40px}
.parcel-info{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.parcel-info h4{margin:0 0 12px;color:var(--navy);font-size:1.02rem}
.pi-row{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dotted #e1e8f2;font-size:.92rem}
.pi-row:last-child{border-bottom:none}
.pi-row span{color:var(--slate)}
.pi-row b{color:var(--ink);text-align:right;font-weight:700}

/* ---------- Responsive ---------- */
@media(max-width:920px){
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:64px 24px 72px}
  .hero-card{justify-content:flex-start}
  .steps,.features,.pricing{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
  .form-grid .card:nth-child(2){grid-column:auto}
}
@media(max-width:600px){
  .main-nav a:not(.btn){display:none}
  .section{padding:60px 0}
  .steps,.features,.pricing,.checks,.field-row,.parcel-view{grid-template-columns:1fr}
  .hero-stats{gap:22px}
  .tab-panel{padding:20px}
  .result-actions{margin-left:0;width:100%}
  .plan-featured{transform:none}
}