/* ============================================================
   CloudShash — Material Design 3 (Material You) system
   Token-driven. Themes selected via [data-theme] on <html>.
   Add a theme = add one [data-theme] block + its name in site.js.
   ============================================================ */

:root {
  --max: 1180px;
  /* Material 3 shape scale */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 28px;
  --r-full: 999px;
  --ease: cubic-bezier(0.2, 0, 0, 1);            /* MD3 emphasized */
  --font: "Roboto", "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Roboto Mono", ui-monospace, monospace;
}

/* ---------- Material Light (default) ---------- */
[data-theme="md-light"] {
  --primary: #00696e;
  --on-primary: #ffffff;
  --primary-container: #9cf1f0;
  --on-primary-container: #002022;
  --secondary: #00677e;
  --tertiary: #4b607c;
  --bg: #faf9fd;
  --surface: #faf9fd;
  --surface-1: #f1f1f9;
  --surface-2: #ebecf4;
  --surface-3: #e5e7f0;
  --on-surface: #1a1b20;
  --on-surface-var: #44474e;
  --outline: #c4c6d0;
  --outline-faint: #e2e2ea;
  --error: #ba1a1a;
  --ok: #146c2e;
  --e1: 0 1px 2px rgba(0,0,0,.30), 0 1px 3px 1px rgba(0,0,0,.10);
  --e2: 0 1px 2px rgba(0,0,0,.30), 0 2px 6px 2px rgba(0,0,0,.10);
  --e3: 0 4px 8px 3px rgba(0,0,0,.10), 0 1px 3px rgba(0,0,0,.30);
  color-scheme: light;
}

/* ---------- Material Dark ---------- */
[data-theme="md-dark"] {
  --primary: #80d4d6;
  --on-primary: #003739;
  --primary-container: #004f54;
  --on-primary-container: #9cf1f0;
  --secondary: #a0cfd0;
  --tertiary: #b3c8e8;
  --bg: #111318;
  --surface: #111318;
  --surface-1: #1c1f25;
  --surface-2: #21242b;
  --surface-3: #262a31;
  --on-surface: #e3e2e9;
  --on-surface-var: #c4c6d0;
  --outline: #8e9099;
  --outline-faint: #2a2d33;
  --error: #ffb4ab;
  --ok: #7dd58a;
  --e1: 0 1px 2px rgba(0,0,0,.50), 0 1px 3px 1px rgba(0,0,0,.30);
  --e2: 0 1px 2px rgba(0,0,0,.50), 0 2px 6px 2px rgba(0,0,0,.30);
  --e3: 0 4px 8px 3px rgba(0,0,0,.30), 0 1px 3px rgba(0,0,0,.50);
  color-scheme: dark;
}

/* ============================================================
   Base
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { font-weight: 500; line-height: 1.15; letter-spacing: -0.01em; }
a { color: inherit; text-decoration: none; }
.bg-mesh { display: none; }  /* Material is flat — no gradient mesh */

.gradient-text { color: var(--primary); }
.eyebrow {
  display: inline-block; font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--secondary);
  margin-bottom: 14px;
}

/* ============================================================
   Top app bar (Material)
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px; background: var(--surface);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.nav.scrolled { background: var(--surface-2); box-shadow: var(--e2); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 500; font-size: 1.25rem; color: var(--on-surface); }
.brand-mark {
  width: 36px; height: 36px; border-radius: var(--r-md); display: grid; place-items: center;
  background: var(--primary-container); color: var(--on-primary-container); font-size: 1.15rem;
}
.brand-accent { color: var(--primary); }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: var(--on-surface-var); font-size: 0.9rem; font-weight: 500;
  padding: 8px 14px; border-radius: var(--r-full); transition: background 0.2s, color 0.2s;
}
.nav-links a:hover { background: var(--surface-2); color: var(--on-surface); }
.nav-links a.active { color: var(--primary); background: var(--primary-container); }
.nav-cta {
  color: var(--on-primary) !important; background: var(--primary);
  padding: 9px 20px !important; box-shadow: var(--e1);
}
.nav-cta:hover { background: var(--primary) !important; filter: brightness(1.05); box-shadow: var(--e2); }

.nav-actions { display: flex; align-items: center; gap: 8px; }
.theme-btn {
  width: 40px; height: 40px; border-radius: var(--r-full); border: 0;
  background: transparent; color: var(--on-surface-var); cursor: pointer; font-size: 1.2rem;
  display: grid; place-items: center; transition: background 0.2s;
}
.theme-btn:hover { background: var(--surface-2); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 10px; border-radius: var(--r-full); }
.menu-toggle span { width: 20px; height: 2px; background: var(--on-surface); border-radius: 2px; transition: 0.3s; }

/* ============================================================
   Buttons (MD3: filled + tonal/outlined)
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font); font-weight: 500; font-size: 0.9rem; letter-spacing: 0.02em;
  padding: 12px 26px; border-radius: var(--r-full); cursor: pointer; border: 1px solid transparent;
  transition: box-shadow 0.25s var(--ease), background 0.2s, filter 0.2s;
}
.btn-primary { background: var(--primary); color: var(--on-primary); box-shadow: var(--e1); }
.btn-primary:hover { box-shadow: var(--e2); filter: brightness(1.05); }
.btn-ghost { background: transparent; color: var(--primary); border-color: var(--outline); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-block { width: 100%; }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding: 80px 0 64px; }
.hero-inner { text-align: center; max-width: 880px; margin: 0 auto; }
.hero-title { font-size: clamp(2.3rem, 6vw, 3.8rem); font-weight: 500; margin-bottom: 22px; letter-spacing: -0.02em; }
.hero-sub { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--on-surface-var); max-width: 660px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.stat {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: var(--surface-1); border-radius: var(--r-lg); padding: 20px 28px; min-width: 150px;
}
.stat strong { font-size: 1.8rem; font-weight: 500; color: var(--primary); }
.stat span { font-size: 0.82rem; color: var(--on-surface-var); }

/* ============================================================
   Marquee
   ============================================================ */
.logos-strip { padding: 22px 0; border-top: 1px solid var(--outline-faint); border-bottom: 1px solid var(--outline-faint); }
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 44px; width: max-content; animation: scroll 36s linear infinite; }
.marquee-track span { font-size: 0.92rem; font-weight: 500; color: var(--on-surface-var); white-space: nowrap; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 84px 0; }
.section-alt { background: var(--surface-1); }
.section-head { text-align: center; max-width: 660px; margin: 0 auto 48px; }
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 14px; }
.section-lead { color: var(--on-surface-var); font-size: 1.05rem; }

.page-hero { padding: 64px 0 24px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 16px; }
.page-hero .section-lead { max-width: 640px; margin: 0 auto; }
.inline-link { color: var(--primary); font-weight: 500; white-space: nowrap; }
.inline-link:hover { text-decoration: underline; }

/* Cards (MD3 elevated) */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--surface-1); border-radius: var(--r-lg); padding: 28px;
  box-shadow: var(--e1); transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.card:hover { box-shadow: var(--e3); transform: translateY(-3px); }
.card-icon {
  font-size: 1.5rem; width: 52px; height: 52px; display: grid; place-items: center;
  border-radius: var(--r-md); background: var(--primary-container); color: var(--on-primary-container); margin-bottom: 18px;
}
.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--on-surface-var); font-size: 0.95rem; margin-bottom: 16px; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { font-size: 0.72rem; font-weight: 500; color: var(--secondary); background: var(--surface-3); padding: 5px 11px; border-radius: var(--r-sm); }

/* Chips (badges) */
.badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.badge {
  background: var(--surface-1); border: 1px solid var(--outline); border-radius: var(--r-sm);
  padding: 9px 16px; font-weight: 500; font-size: 0.9rem; color: var(--on-surface-var);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.badge:hover { background: var(--primary-container); color: var(--on-primary-container); border-color: transparent; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { background: var(--surface); border: 1px solid var(--outline-faint); border-radius: var(--r-lg); padding: 26px; }
.step-num {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: var(--r-full);
  background: var(--primary); color: var(--on-primary); font-size: 0.85rem; font-weight: 500; margin-bottom: 14px;
}
.step h3 { font-size: 1.15rem; margin-bottom: 8px; }
.step p { color: var(--on-surface-var); font-size: 0.92rem; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 52px; align-items: center; }
.about-grid h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); margin-bottom: 16px; }
.about-grid p { color: var(--on-surface-var); margin-bottom: 16px; }
.about-points { display: grid; gap: 14px; }
.point { background: var(--surface-1); border-radius: var(--r-md); padding: 20px; }
.point strong { display: block; margin-bottom: 4px; font-weight: 500; }
.point span { color: var(--on-surface-var); font-size: 0.92rem; }

/* Why row */
.why { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.why-item { background: var(--surface); border: 1px solid var(--outline-faint); border-radius: var(--r-lg); padding: 28px; }
.why-item .why-icon {
  width: 48px; height: 48px; border-radius: var(--r-md); display: grid; place-items: center;
  background: var(--surface-3); color: var(--primary); font-size: 1.4rem; margin-bottom: 16px;
}
.why-item h3 { font-size: 1.15rem; margin-bottom: 8px; }
.why-item p { color: var(--on-surface-var); font-size: 0.93rem; }

/* FAQ (details/summary) */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 12px; }
.faq details {
  background: var(--surface-1); border-radius: var(--r-md); padding: 4px 20px;
  border: 1px solid var(--outline-faint); transition: background 0.2s;
}
.faq details[open] { background: var(--surface-2); }
.faq summary {
  list-style: none; cursor: pointer; padding: 16px 0; font-weight: 500; font-size: 1.02rem;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; color: var(--primary); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--on-surface-var); font-size: 0.95rem; padding: 0 0 18px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start; }
.contact-grid h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); margin-bottom: 16px; }
.contact-list { list-style: none; margin-top: 24px; display: grid; gap: 14px; }
.contact-list li { display: flex; flex-direction: column; }
.contact-list span { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--on-surface-var); }
.contact-list a { color: var(--primary); font-weight: 500; }
.contact-form { background: var(--surface-1); border-radius: var(--r-lg); padding: 30px; box-shadow: var(--e1); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 7px; color: var(--on-surface-var); }
.field input, .field textarea {
  width: 100%; background: var(--surface); border: 1px solid var(--outline); border-radius: var(--r-sm);
  padding: 13px 14px; color: var(--on-surface); font-family: var(--font); font-size: 0.95rem; resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary); }
.form-note { margin-top: 14px; font-size: 0.9rem; min-height: 1.2em; }
.form-note.ok { color: var(--ok); }
.form-note.err { color: var(--error); }

/* CTA band */
.cta-band {
  background: var(--primary-container); color: var(--on-primary-container);
  border-radius: var(--r-xl); padding: 52px 32px; text-align: center;
}
.cta-band h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); margin-bottom: 10px; }
.cta-band p { color: var(--on-primary-container); opacity: 0.85; max-width: 540px; margin: 0 auto 24px; }

/* Footer */
.footer { border-top: 1px solid var(--outline-faint); padding: 48px 0 36px; background: var(--surface-1); }
.footer-inner { display: grid; gap: 24px; }
.footer-brand { display: flex; flex-direction: column; gap: 8px; }
.footer-brand .brand-name { display: flex; align-items: center; gap: 10px; font-weight: 500; font-size: 1.15rem; }
.footer-brand p { color: var(--on-surface-var); font-size: 0.9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-links a { color: var(--on-surface-var); font-size: 0.9rem; padding: 6px 12px; border-radius: var(--r-full); transition: background 0.2s; }
.footer-links a:hover { background: var(--surface-3); color: var(--on-surface); }
.footer-copy { color: var(--on-surface-var); font-size: 0.85rem; }

/* Floating action button (Material) */
.fab {
  position: fixed; right: 24px; bottom: 24px; z-index: 60;
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--primary-container); color: var(--on-primary-container);
  padding: 16px 22px; border-radius: var(--r-lg); box-shadow: var(--e3);
  font-weight: 500; font-size: 0.92rem; transition: box-shadow 0.2s, transform 0.2s;
}
.fab:hover { box-shadow: var(--e3); transform: translateY(-2px); filter: brightness(1.03); }
.fab .fab-icon { font-size: 1.15rem; }

/* Blog filters */
.blog-filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.filter-chip {
  font-family: var(--font); font-size: 0.88rem; font-weight: 500; cursor: pointer;
  background: var(--surface-1); color: var(--on-surface-var); border: 1px solid var(--outline);
  border-radius: var(--r-sm); padding: 8px 16px; transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.filter-chip:hover { background: var(--surface-2); color: var(--on-surface); }
.filter-chip.active { background: var(--primary); color: var(--on-primary); border-color: transparent; }
.filter-chip.filter-group { background: var(--primary-container); color: var(--on-primary-container); border-color: transparent; }
.filter-chip.filter-group.active { background: var(--primary); color: var(--on-primary); }

/* Blog list */
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.post-card {
  display: flex; flex-direction: column; background: var(--surface-1); border-radius: var(--r-lg);
  padding: 24px; box-shadow: var(--e1); transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.post-card:hover { box-shadow: var(--e3); transform: translateY(-3px); }
.post-meta { display: flex; align-items: center; gap: 10px; font-size: 0.78rem; color: var(--on-surface-var); margin-bottom: 12px; }
.post-badge { background: var(--surface-3); color: var(--secondary); border-radius: var(--r-sm); padding: 3px 9px; font-size: 0.7rem; font-weight: 500; }
.post-card h3 { font-size: 1.12rem; margin-bottom: 8px; line-height: 1.3; }
.post-card p { color: var(--on-surface-var); font-size: 0.92rem; flex: 1; margin-bottom: 14px; }
.post-link { color: var(--primary); font-weight: 500; font-size: 0.9rem; }

/* Single post */
.post-wrap { max-width: 740px; margin: 0 auto; }
.post-wrap .post-meta { justify-content: flex-start; margin-bottom: 16px; }
.post-wrap h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); margin-bottom: 16px; }
.post-body p { color: var(--on-surface-var); margin-bottom: 18px; line-height: 1.78; }
.post-body h2 { font-size: 1.5rem; margin: 36px 0 12px; }
.post-body h3 { font-size: 1.2rem; margin: 26px 0 10px; }
.post-body ul, .post-body ol { color: var(--on-surface-var); margin: 0 0 18px 22px; }
.post-body li { margin-bottom: 8px; line-height: 1.7; }
.post-body code { font-family: var(--font-mono); background: var(--surface-2); padding: 2px 6px; border-radius: 6px; font-size: 0.88em; }
.post-body pre { background: var(--surface-2); border: 1px solid var(--outline-faint); border-radius: var(--r-md); padding: 18px; overflow: auto; margin-bottom: 18px; }
.post-body pre code { background: none; padding: 0; }
.post-body blockquote { border-left: 3px solid var(--primary); padding-left: 16px; color: var(--on-surface-var); margin: 0 0 18px; font-style: italic; }

/* Pricing tiers */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.tier { background: var(--surface-1); border-radius: var(--r-lg); padding: 30px; box-shadow: var(--e1); display: flex; flex-direction: column; }
.tier.featured { border: 2px solid var(--primary); }
.tier .tier-flag { font-size: 0.72rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--primary); margin-bottom: 8px; }
.tier h3 { font-size: 1.25rem; margin-bottom: 6px; }
.tier .tier-price { font-size: 1rem; color: var(--on-surface-var); margin-bottom: 18px; }
.tier ul { list-style: none; display: grid; gap: 10px; margin-bottom: 24px; flex: 1; }
.tier li { color: var(--on-surface-var); font-size: 0.92rem; padding-left: 24px; position: relative; }
.tier li::before { content: "\2713"; position: absolute; left: 0; color: var(--primary); font-weight: 700; }

/* Case studies */
.cases { display: grid; gap: 20px; }
.case { background: var(--surface-1); border-radius: var(--r-lg); padding: 30px; box-shadow: var(--e1); display: grid; grid-template-columns: 1fr 1.6fr; gap: 28px; align-items: center; }
.case-tag { color: var(--secondary); font-size: 0.74rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; }
.case h3 { font-size: 1.3rem; margin: 6px 0 10px; }
.case p { color: var(--on-surface-var); font-size: 0.95rem; }
.case-result { display: flex; gap: 28px; margin-top: 16px; flex-wrap: wrap; }
.case-result strong { display: block; font-size: 1.5rem; color: var(--primary); font-weight: 500; }
.case-result span { font-size: 0.8rem; color: var(--on-surface-var); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .cards, .why, .posts, .tiers { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .about-grid, .contact-grid, .case { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 680px) {
  .nav-links {
    position: fixed; inset: 64px 12px auto 12px; flex-direction: column; gap: 6px; align-items: stretch;
    background: var(--surface-2); box-shadow: var(--e3); border-radius: var(--r-lg); padding: 14px;
    transform: translateY(-10px); opacity: 0; pointer-events: none; transition: 0.25s var(--ease);
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 16px; }
  .menu-toggle { display: flex; }
  .cards, .why, .steps, .posts, .tiers { grid-template-columns: 1fr; }
  .fab { right: 16px; bottom: 16px; padding: 14px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}
