/* =========================================================
   ERMIONI KATSOUTA — Business Intelligence
   ΚΟΙΝΟ STYLESHEET για όλες τις σελίδες.
   Άλλαξε χρώματα/γραμματοσειρές εδώ -> αλλάζουν παντού.
   ========================================================= */
:root{
  --ink:        #0A1A33;   /* βαθύ μπλε */
  --cobalt:     #143A6B;   /* μεσαίο μπλε */
  --paper:      #F6F4EE;   /* ζεστό off-white */
  --teal:       #2FA8B8;   /* τιρκουάζ accent */
  --amber:      #E9A93C;   /* ζεστό κίτρινο (CTA) */
  --slate:      #45505f;   /* γκρι κείμενο (πιο σκούρο/έντονο) */
  --line:       #DFDBD0;
  --paper-soft: #EDEAE1;

  --ff-display: "Space Grotesk", system-ui, sans-serif;
  --ff-body:    "IBM Plex Sans", system-ui, sans-serif;
  --ff-mono:    "IBM Plex Mono", ui-monospace, monospace;
  --maxw: 1180px;
}
*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{ font-family:var(--ff-body); font-weight:400; color:var(--ink); background:var(--paper); line-height:1.6; overflow-x:hidden; }
a{ color:inherit; text-decoration:none; }
img{ display:block; max-width:100%; }
.wrap{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px; }

h1,h2,h3{ font-family:var(--ff-display); font-weight:700; line-height:1.08; letter-spacing:-0.02em; }
.eyebrow{ font-family:var(--ff-mono); font-size:12px; font-weight:500; letter-spacing:0.18em; text-transform:uppercase; color:var(--teal); display:inline-flex; align-items:center; gap:10px; }
.eyebrow::before{ content:""; width:24px; height:1px; background:var(--teal); display:inline-block; }

.btn{ display:inline-flex; align-items:center; gap:10px; font-family:var(--ff-mono); font-size:13px; font-weight:500; letter-spacing:0.04em; padding:14px 22px; border-radius:2px; cursor:pointer; border:1px solid transparent; transition:transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease; }
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--amber); color:var(--ink); }
.btn-primary:hover{ background:#f2b956; }
.btn-ghost{ border-color:rgba(255,255,255,.28); color:#fff; }
.btn-ghost:hover{ border-color:#fff; background:rgba(255,255,255,.06); }
.btn-dark{ border-color:var(--ink); color:var(--ink); }
.btn-dark:hover{ background:var(--ink); color:var(--paper); }

/* ---------- NAVBAR ---------- */
header{ position:sticky; top:0; z-index:50; background:rgba(246,244,238,.82); backdrop-filter:blur(10px); border-bottom:1px solid var(--line); }
.nav{ display:flex; align-items:center; justify-content:space-between; height:68px; }
.brand{ display:flex; align-items:center; gap:11px; font-family:var(--ff-display); font-weight:600; font-size:18px; letter-spacing:-0.01em; }
.brand .mark{ width:30px; height:30px; flex:none; display:block; }
.nav-links{ display:flex; gap:30px; align-items:center; }
.nav-links a{ font-size:14px; font-weight:500; color:var(--slate); transition:color .2s; }
.nav-links a:hover{ color:var(--ink); }
.nav-cta{ font-family:var(--ff-mono); font-size:13px; padding:10px 18px; border:1px solid var(--ink); border-radius:2px; color:var(--ink); }
.nav-cta:hover{ background:var(--ink); color:var(--paper); }
.burger{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:6px; }
.burger span{ width:24px; height:2px; background:var(--ink); transition:.25s; }

/* ---------- HERO ---------- */
.hero{ background:var(--ink); color:var(--paper); position:relative; overflow:hidden; }
.hero::before{ content:""; position:absolute; inset:0; opacity:.06; background-image:linear-gradient(var(--teal) 1px,transparent 1px),linear-gradient(90deg,var(--teal) 1px,transparent 1px); background-size:42px 42px; }
.hero-grid{ position:relative; display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; padding:84px 0 92px; }
.hero h1{ font-size:clamp(38px,5.4vw,66px); color:#fff; margin:20px 0 22px; }
.hero h1 em{ font-style:normal; color:var(--amber); }
.hero p.lead{ font-size:18px; font-weight:500; color:#d3dceb; max-width:30em; margin-bottom:34px; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; }
.hero-meta{ display:flex; gap:34px; margin-top:42px; }
.hero-meta .kpi{ font-family:var(--ff-mono); }
.hero-meta .kpi b{ display:block; font-size:26px; font-weight:600; color:#fff; }
.hero-meta .kpi span{ font-size:12px; letter-spacing:.06em; color:#8a99af; text-transform:uppercase; }

.panel{ background:#0e2444; border:1px solid rgba(47,168,184,.32); border-radius:10px; padding:18px; box-shadow:0 30px 60px -20px rgba(0,0,0,.55); }
.panel-top{ display:flex; justify-content:space-between; align-items:center; margin-bottom:14px; }
.panel-top .ttl{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.12em; color:#8a99af; text-transform:uppercase; }
.dot-row{ display:flex; gap:6px; }
.dot-row i{ width:9px; height:9px; border-radius:50%; background:#1c3a63; }
.dot-row i:nth-child(1){ background:var(--amber); } .dot-row i:nth-child(2){ background:var(--teal); }
.kpi-cards{ display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:12px; }
.kpi-card{ background:#0a1c38; border:1px solid rgba(255,255,255,.06); border-radius:7px; padding:12px; }
.kpi-card .lbl{ font-family:var(--ff-mono); font-size:10px; letter-spacing:.1em; color:#7f8ea5; text-transform:uppercase; }
.kpi-card .val{ font-family:var(--ff-display); font-size:24px; font-weight:600; color:#fff; margin-top:4px; }
.kpi-card .delta{ font-family:var(--ff-mono); font-size:11px; }
.up{ color:#4fd17a; } .down{ color:#ff7a7a; }
.spark{ height:74px; background:#0a1c38; border:1px solid rgba(255,255,255,.06); border-radius:7px; padding:8px; }
.sources{ display:flex; flex-wrap:wrap; gap:7px; margin-top:14px; }
.src{ font-family:var(--ff-mono); font-size:11px; padding:5px 9px; border:1px dashed rgba(200,210,224,.35); border-radius:3px; color:#b6c2d4; }
.src.merged{ border-style:solid; border-color:var(--teal); color:var(--teal); }

/* ---------- TOOLS ---------- */
.tools{ border-bottom:1px solid var(--line); background:var(--paper-soft); }
.tools .wrap{ padding:26px 24px; display:flex; align-items:center; gap:32px; flex-wrap:wrap; }
.tools .label{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--slate); white-space:nowrap; }
.tools .logos{ display:flex; gap:26px 30px; flex-wrap:wrap; }
.tools .logos span{ font-family:var(--ff-display); font-weight:600; font-size:15px; color:var(--cobalt); opacity:.85; }

/* ---------- SECTIONS ---------- */
section{ padding:96px 0; }
.sec-head{ max-width:660px; margin-bottom:54px; }
.sec-head h2{ font-size:clamp(30px,3.6vw,44px); margin:16px 0 14px; }
.sec-head p{ color:var(--slate); font-size:17px; font-weight:500; }

/* services */
.svc-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden; }
.svc{ background:var(--paper); padding:30px 26px; transition:background .2s; }
.svc:hover{ background:#fff; }
.svc .ic{ width:38px; height:38px; border-radius:8px; background:rgba(47,168,184,.12); color:var(--teal); display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-family:var(--ff-mono); font-weight:600; font-size:15px; }
.svc h3{ font-size:18px; margin-bottom:8px; }
.svc p{ color:var(--slate); font-size:14.5px; }

/* process */
.process{ background:var(--ink); color:var(--paper); }
.process .sec-head h2{ color:#fff; } .process .sec-head p{ color:#aebbcd; }
.steps{ display:grid; grid-template-columns:repeat(2,1fr); gap:0 56px; }
.step{ display:flex; gap:20px; padding:22px 0; border-bottom:1px solid rgba(255,255,255,.1); }
.step .no{ font-family:var(--ff-mono); font-size:13px; color:var(--amber); padding-top:3px; flex:none; width:34px; }
.step h3{ font-size:17px; color:#fff; margin-bottom:5px; }
.step p{ color:#9fb0c6; font-size:14px; }

/* industries */
.ind-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.ind{ border:1px solid var(--line); border-radius:10px; padding:26px; background:var(--paper); transition:transform .18s, border-color .2s; }
.ind:hover{ transform:translateY(-4px); border-color:var(--teal); }
.ind .emo{ font-size:22px; }
.ind h3{ font-size:18px; margin:14px 0 6px; }
.ind p{ color:var(--slate); font-size:14px; }

/* case studies */
.case-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }
.case{ display:block; border:1px solid var(--line); border-radius:12px; overflow:hidden; background:var(--paper); transition:transform .2s, box-shadow .2s; color:inherit; }
.case:hover{ transform:translateY(-5px); box-shadow:0 24px 50px -28px rgba(10,26,51,.4); }
.case .thumb{ height:160px; position:relative; overflow:hidden; }
.case .thumb .mini{ position:absolute; inset:0; padding:18px; display:flex; flex-direction:column; justify-content:flex-end; gap:6px; }
.case .thumb .viz{ position:absolute; inset:0; width:100%; height:100%; }
.case .thumb .bar{ height:8px; border-radius:2px; background:rgba(255,255,255,.85); }
.case .body{ padding:22px 24px 26px; }
.case .tag{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--teal); }
.case h3{ font-size:20px; margin:8px 0 8px; }
.case p{ color:var(--slate); font-size:14.5px; }
.case .res{ display:flex; gap:22px; margin-top:16px; }
.case .res b{ font-family:var(--ff-display); font-size:22px; display:block; color:var(--ink); }
.case .res span{ font-family:var(--ff-mono); font-size:11px; color:var(--slate); text-transform:uppercase; letter-spacing:.05em; }

/* blog */
.blog-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.post{ display:block; border-top:2px solid var(--ink); padding-top:18px; transition:border-color .2s; color:inherit; }
.post:hover{ border-color:var(--teal); }
.post .meta{ font-family:var(--ff-mono); font-size:11px; color:var(--slate); letter-spacing:.06em; margin-bottom:10px; }
.post h3{ font-size:19px; margin-bottom:8px; }
.post p{ color:var(--slate); font-size:14px; }
.post .more{ font-family:var(--ff-mono); font-size:12px; color:var(--teal); margin-top:12px; display:inline-block; }

/* about */
.about{ background:var(--paper-soft); }
.about-grid{ display:grid; grid-template-columns:.85fr 1.15fr; gap:54px; align-items:center; }
.photo-wrap{ position:relative; }
.photo-wrap img{ border-radius:12px; width:100%; object-fit:cover; aspect-ratio:3/4; box-shadow:0 30px 60px -30px rgba(10,26,51,.5); }
.photo-wrap .badge{ position:absolute; bottom:-18px; left:-18px; background:var(--ink); color:#fff; font-family:var(--ff-mono); font-size:12px; padding:14px 18px; border-radius:8px; line-height:1.4; border:1px solid var(--teal); }
.photo-wrap .badge b{ color:var(--amber); }
.about h2{ font-size:clamp(28px,3.4vw,40px); margin:14px 0 18px; }
.about p{ color:var(--slate); font-size:16px; font-weight:500; margin-bottom:16px; }
.about .pills{ display:flex; gap:10px; flex-wrap:wrap; margin-top:22px; }
.about .pills span{ font-family:var(--ff-mono); font-size:12px; padding:8px 13px; border:1px solid var(--line); border-radius:30px; background:var(--paper); }

/* ---------- CONTACT ---------- */
.contact{ background:var(--ink); color:#fff; }
.contact .sec-head h2{ color:#fff; } .contact .sec-head p{ color:#aebbcd; }
.contact-grid{ display:grid; grid-template-columns:1fr 1.1fr; gap:48px; align-items:start; }
.contact-list{ display:flex; flex-direction:column; gap:6px; }
.cinfo{ display:flex; gap:16px; padding:20px 0; border-bottom:1px solid rgba(255,255,255,.1); align-items:flex-start; }
.cinfo .ic{ width:42px; height:42px; flex:none; border-radius:9px; background:rgba(47,168,184,.14); color:var(--teal); display:flex; align-items:center; justify-content:center; font-size:18px; }
.cinfo .lbl{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:#8a99af; margin-bottom:3px; }
.cinfo a, .cinfo span{ font-size:16px; color:#fff; }
.cinfo a:hover{ color:var(--amber); }
.map{ border-radius:12px; overflow:hidden; border:1px solid rgba(47,168,184,.3); min-height:340px; }
.map iframe{ width:100%; height:100%; min-height:340px; border:0; display:block; filter:grayscale(.2) contrast(1.05); }
.contact-cta{ margin-top:30px; display:flex; gap:14px; flex-wrap:wrap; }

/* ---------- FOOTER ---------- */
footer{ background:var(--ink); color:#8a99af; padding:40px 0; border-top:1px solid rgba(255,255,255,.08); }
.foot{ display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap; font-size:13px; font-family:var(--ff-mono); }
.foot a:hover{ color:#fff; }

/* =========================================================
   ARTICLE / PROJECT PAGES
   ========================================================= */
.page-hero{ background:var(--ink); color:#fff; padding:64px 0 56px; position:relative; overflow:hidden; }
.page-hero::before{ content:""; position:absolute; inset:0; opacity:.05; background-image:linear-gradient(var(--teal) 1px,transparent 1px),linear-gradient(90deg,var(--teal) 1px,transparent 1px); background-size:42px 42px; }
.crumb{ position:relative; font-family:var(--ff-mono); font-size:12px; color:#8a99af; letter-spacing:.05em; margin-bottom:22px; display:inline-block; }
.crumb a:hover{ color:var(--amber); }
.page-hero h1{ position:relative; font-size:clamp(30px,4.4vw,52px); color:#fff; max-width:18ch; margin:14px 0 18px; }
.page-hero .pmeta{ position:relative; font-family:var(--ff-mono); font-size:13px; color:#aebbcd; display:flex; gap:18px; flex-wrap:wrap; }

.article{ padding:64px 0 80px; }
.article-wrap{ max-width:720px; margin:0 auto; }
.article-wrap > p{ font-size:17.5px; color:#2c3849; margin-bottom:22px; }
.article-wrap h2{ font-size:27px; margin:42px 0 14px; }
.article-wrap h3{ font-size:20px; margin:30px 0 10px; }
.article-wrap ul, .article-wrap ol{ margin:0 0 22px 22px; color:#2c3849; }
.article-wrap li{ margin-bottom:9px; }
.article-wrap strong{ color:var(--ink); }
.lead-para{ font-size:20px !important; color:var(--slate) !important; line-height:1.55; }
.callout{ background:var(--paper-soft); border-left:3px solid var(--teal); border-radius:0 8px 8px 0; padding:20px 24px; margin:28px 0; }
.callout .k{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--teal); display:block; margin-bottom:6px; }
.callout p{ margin:0; font-size:16px; color:#2c3849; }
.tldr{ background:#fff; border:1px solid var(--line); border-radius:12px; padding:22px 26px; margin:0 0 38px; }
.tldr .k{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--teal); display:block; margin-bottom:8px; }
.tldr p{ margin:0; font-size:16px; }
.kpi-table{ width:100%; border-collapse:collapse; margin:14px 0 26px; font-size:15px; }
.kpi-table th, .kpi-table td{ text-align:left; padding:12px 14px; border-bottom:1px solid var(--line); vertical-align:top; }
.kpi-table th{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--slate); }
.kpi-table td:first-child{ font-weight:600; color:var(--ink); white-space:nowrap; }
.codeblock{ background:var(--ink); color:#d7e2f0; font-family:var(--ff-mono); font-size:13.5px; line-height:1.7; padding:18px 20px; border-radius:9px; overflow-x:auto; margin:8px 0 26px; }
.codeblock .c{ color:#7f8ea5; } .codeblock .kw{ color:var(--amber); } .codeblock .fn{ color:var(--teal); }
.next-read{ border-top:1px solid var(--line); margin-top:50px; padding-top:30px; }
.next-read .k{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--slate); }
.next-read a{ display:block; font-family:var(--ff-display); font-weight:600; font-size:18px; margin-top:8px; }
.next-read a:hover{ color:var(--teal); }

/* project specifics */
.proj-stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:12px; overflow:hidden; margin:0 0 14px; }
.proj-stats .s{ background:#fff; padding:24px 20px; }
.proj-stats .s b{ font-family:var(--ff-display); font-size:30px; display:block; color:var(--ink); }
.proj-stats .s span{ font-family:var(--ff-mono); font-size:11px; letter-spacing:.05em; text-transform:uppercase; color:var(--slate); }
.tag-row{ display:flex; gap:8px; flex-wrap:wrap; margin:6px 0 30px; }
.tag-row span{ font-family:var(--ff-mono); font-size:12px; padding:7px 12px; border:1px solid var(--line); border-radius:30px; background:#fff; color:var(--slate); }

/* ---------- REVEAL + RESPONSIVE ---------- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; transition:none; } html{scroll-behavior:auto;} }

@media (max-width:960px){
  .hero-grid{ grid-template-columns:1fr; gap:44px; padding:60px 0 70px; }
  .svc-grid{ grid-template-columns:repeat(2,1fr); }
  .steps{ grid-template-columns:1fr; gap:0; }
  .ind-grid,.blog-grid{ grid-template-columns:repeat(2,1fr); }
  .case-grid{ grid-template-columns:1fr; }
  .about-grid{ grid-template-columns:1fr; gap:60px; }
  .photo-wrap{ max-width:360px; }
  .contact-grid{ grid-template-columns:1fr; gap:34px; }
  .proj-stats{ grid-template-columns:1fr 1fr; }
}
@media (max-width:640px){
  section{ padding:64px 0; }
  .nav-links{ display:none; }
  .burger{ display:flex; }
  .nav-links.open{ display:flex; position:absolute; top:68px; left:0; right:0; flex-direction:column; background:var(--paper); border-bottom:1px solid var(--line); padding:20px 24px; gap:18px; }
  .svc-grid,.ind-grid,.blog-grid{ grid-template-columns:1fr; }
  .hero-meta{ gap:24px; }
  .proj-stats{ grid-template-columns:1fr 1fr; }
}