/* =====================================================================
   KIRAN SAHU — Official Blog
   Public site — Apple-inspired design system
   ===================================================================== */

:root{
  --bg:        #ffffff;
  --bg-2:      #f5f5f7;
  --bg-3:      #fbfbfd;
  --card:      #ffffff;
  --ink:       #1d1d1f;
  --ink-dim:   #6e6e73;
  --ink-mute:  #86868b;
  --line:      rgba(0,0,0,.08);
  --line-2:    rgba(0,0,0,.14);
  --accent:    #0071e3;
  --accent-dk: #0051a2;
  --nav-bg:    rgba(255,255,255,.78);
  --footer-bg: #f5f5f7;
  --shadow:    0 20px 45px rgba(0,0,0,.08);
  --shadow-lg: 0 30px 70px rgba(0,0,0,.14);
  color-scheme: light;

  --ease:   cubic-bezier(.22,1,.36,1);
  --f-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
            "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --wrap: 1180px;
}

/*
 * This site intentionally has ONE fixed look — the real apple.com marketing
 * site does not offer a light/dark switcher, it just is what it is. Sections
 * that need a dark backdrop (the newsletter band) use --ink directly rather
 * than a theme flip.
 */

*,*::before,*::after{ box-sizing:border-box; }
*{ margin:0; padding:0; }
html{ scroll-behavior:smooth; }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--f-sans);
  font-size:17px;
  line-height:1.47059;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img,video{ display:block; max-width:100%; }
svg.ico{ display:inline-block; vertical-align:-3px; flex-shrink:0; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
ul{ list-style:none; }
input,textarea,select,button{ font-family:inherit; }

.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 clamp(1.25rem,4vw,2.5rem); }

h1,h2,h3,h4{ font-weight:600; letter-spacing:-.015em; line-height:1.08; }

/* ===================================================================
   NAV — fixed/sticky, no scroll-triggered animation of any kind.
   =================================================================== */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:500;
  height:52px;
  display:flex; align-items:center;
  background:var(--nav-bg);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; width:100%; gap:1.5rem; }
.nav-brand{ display:flex; align-items:center; gap:.6rem; font-size:1.02rem; font-weight:600; letter-spacing:-.01em; }
.nav-brand img{ height:22px; width:auto; }
.nav-links{ display:flex; align-items:center; gap:2.1rem; }
.nav-links a{
  font-size:.8rem; font-weight:400; color:var(--ink-dim);
  transition:color .25s;
}
.nav-links a:hover,.nav-links a.is-active{ color:var(--ink); }
.nav-side{ display:flex; align-items:center; gap:1.1rem; }
.nav-icon-btn{
  width:30px; height:30px; display:grid; place-items:center;
  color:var(--ink-dim); border-radius:50%; transition:background-color .25s, color .25s;
}
.nav-icon-btn:hover{ color:var(--ink); background:var(--bg-2); }
.nav-burger{ display:none; }

.search-panel{
  position:fixed; inset:52px 0 auto 0; z-index:490;
  background:var(--nav-bg); backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line);
  padding:1.5rem 0;
  transform:translateY(-12px); opacity:0; visibility:hidden;
  transition:transform .35s var(--ease), opacity .35s var(--ease), visibility .35s;
}
.search-panel.is-open{ transform:none; opacity:1; visibility:visible; }
.search-panel form{ display:flex; align-items:center; gap:.8rem; max-width:640px; margin:0 auto; }
.search-panel input{
  flex:1; border:0; border-bottom:1px solid var(--line-2); background:none;
  font-size:1.4rem; padding:.4rem 0; color:var(--ink); font-weight:300;
}
.search-panel input:focus{ outline:none; border-color:var(--ink); }

@media (max-width:900px){
  .nav-links{
    position:fixed; top:52px; left:0; right:0; height:calc(100vh - 52px); z-index:480;
    background:var(--bg); flex-direction:column; align-items:flex-start;
    padding:1.5rem clamp(1.25rem,4vw,2.5rem); gap:0;
    transform:translateX(100%); transition:transform .4s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{ transform:none; }
  .nav-links a{ width:100%; padding:1rem 0; border-bottom:1px solid var(--line); font-size:1.05rem; color:var(--ink); }
  .nav-burger{ display:grid; place-items:center; width:30px; height:30px; }
}

/* ===================================================================
   BUTTONS / LINKS
   =================================================================== */
.btn-pill{
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.72rem 1.5rem;
  border-radius:99px;
  background:var(--accent);
  color:#fff;
  font-size:.95rem; font-weight:400;
  transition:background-color .3s var(--ease), transform .3s var(--ease);
}
.btn-pill:hover{ background:var(--accent-dk); }
.btn-pill.is-ghost{
  background:var(--bg-2); color:var(--ink);
}
.btn-pill.is-ghost:hover{ background:var(--line); }

.link-more{
  display:inline-flex; align-items:center; gap:.3rem;
  color:var(--accent); font-size:1rem;
  transition:gap .3s var(--ease);
}
.link-more:hover{ gap:.55rem; color:var(--accent-dk); }
.link-more svg{ width:14px; height:14px; }

/* ===================================================================
   HERO
   =================================================================== */
.hero{
  padding:calc(52px + clamp(3.5rem,10vw,7rem)) 0 clamp(3rem,7vw,5rem);
  text-align:center;
  background:linear-gradient(180deg, var(--bg-3), var(--bg));
}
.hero .eyebrow{
  display:inline-block; font-size:.8rem; font-weight:600; letter-spacing:.02em;
  color:var(--accent); margin-bottom:1rem;
}
.hero h1{
  font-size:clamp(2.6rem,6.4vw,4.6rem);
  white-space:pre-line;
  max-width:16ch; margin:0 auto;
}
.hero p{
  margin:1.3rem auto 0; max-width:44ch;
  font-size:clamp(1.05rem,2vw,1.3rem);
  color:var(--ink-dim); font-weight:400; line-height:1.5;
}
.hero .cta-row{ margin-top:2.1rem; display:flex; gap:1.4rem; justify-content:center; flex-wrap:wrap; align-items:center; }
.hero-media{
  margin:clamp(2.5rem,6vw,4rem) auto 0; max-width:1040px;
  border-radius:28px; overflow:hidden; box-shadow:var(--shadow-lg);
  aspect-ratio:16/9; background:var(--bg-2);
}
.hero-media img{ width:100%; height:100%; object-fit:cover; }

.page-hero{
  padding:calc(52px + clamp(3rem,8vw,5.5rem)) 0 clamp(2.5rem,5vw,3.5rem);
  text-align:center; background:var(--bg-3);
}
.page-hero .eyebrow{ font-size:.8rem; font-weight:600; color:var(--accent); }
.page-hero h1{ font-size:clamp(2.2rem,5vw,3.4rem); margin-top:.6rem; }
.page-hero p{ margin:1rem auto 0; max-width:52ch; color:var(--ink-dim); font-size:1.1rem; }

/* ===================================================================
   SECTIONS
   =================================================================== */
.section{ padding:clamp(3.5rem,7vw,6rem) 0; }
.section.is-tint{ background:var(--bg-2); }
.section-head{ text-align:center; max-width:640px; margin:0 auto clamp(2.2rem,5vw,3.5rem); }
.section-head .eyebrow{ font-size:.8rem; font-weight:600; color:var(--accent); display:block; margin-bottom:.6rem; }
.section-head h2{ font-size:clamp(1.9rem,4vw,2.7rem); }
.section-head p{ margin-top:.8rem; color:var(--ink-dim); font-size:1.08rem; }
.section-head.is-split{
  display:flex; align-items:flex-end; justify-content:space-between;
  text-align:left; max-width:none; gap:1.5rem; flex-wrap:wrap;
}

/* ===================================================================
   POST GRID / CARDS
   =================================================================== */
.post-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(1.4rem,2.4vw,2rem); }
.post-grid.is-2col{ grid-template-columns:repeat(2,1fr); }
@media (max-width:960px){ .post-grid,.post-grid.is-2col{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .post-grid,.post-grid.is-2col{ grid-template-columns:1fr; } }

.post-card{
  display:flex; flex-direction:column;
  background:var(--card);
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  transition:transform .45s var(--ease), box-shadow .45s var(--ease);
}
.post-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.post-card .thumb{ aspect-ratio:4/3; overflow:hidden; background:var(--bg-2); }
.post-card .thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.post-card:hover .thumb img{ transform:scale(1.05); }
.post-card .body{ padding:1.5rem; display:flex; flex-direction:column; gap:.6rem; flex:1; }
.post-card .meta{ display:flex; gap:.6rem; align-items:center; font-size:.78rem; color:var(--ink-mute); }
.post-card .cat-pill{
  font-size:.72rem; font-weight:600; color:var(--accent);
  text-transform:uppercase; letter-spacing:.03em;
}
.post-card h3{ font-size:1.22rem; line-height:1.28; }
.post-card p{ color:var(--ink-dim); font-size:.94rem; line-height:1.55; flex:1; }
.post-card .read-more{ margin-top:.3rem; font-size:.88rem; color:var(--accent); display:inline-flex; align-items:center; gap:.3rem; }

.post-card.is-feature{ flex-direction:row; }
.post-card.is-feature .thumb{ flex:1.1; aspect-ratio:auto; }
.post-card.is-feature .body{ flex:1; justify-content:center; padding:clamp(1.6rem,3vw,3rem); }
.post-card.is-feature h3{ font-size:clamp(1.4rem,2.4vw,1.9rem); }
@media (max-width:760px){
  .post-card.is-feature{ flex-direction:column; }
  .post-card.is-feature .thumb{ aspect-ratio:16/10; }
}

/* Category pills / filter bar */
.filter-bar{ display:flex; gap:.6rem; flex-wrap:wrap; justify-content:center; margin-bottom:clamp(2rem,4vw,3rem); }
.filter-bar a,.filter-bar span{
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.5rem 1.1rem; border-radius:99px; font-size:.87rem;
  background:var(--bg-2); color:var(--ink-dim);
  transition:background-color .25s, color .25s;
}
.filter-bar a:hover{ background:var(--line); color:var(--ink); }
.filter-bar a.is-active{ background:var(--ink); color:var(--bg); }

/* ===================================================================
   ARTICLE / SINGLE POST
   =================================================================== */
.article-head{ padding:calc(52px + clamp(2.5rem,6vw,4rem)) 0 2rem; text-align:center; }
.article-head .cat-pill{ font-size:.8rem; font-weight:600; color:var(--accent); text-transform:uppercase; letter-spacing:.03em; }
.article-head h1{ font-size:clamp(2rem,5vw,3.2rem); margin:.8rem auto 0; max-width:22ch; }
.article-head .meta{
  display:flex; gap:1rem; justify-content:center; flex-wrap:wrap;
  margin-top:1.3rem; color:var(--ink-mute); font-size:.9rem;
}
.article-cover{
  max-width:960px; margin:clamp(2rem,5vw,3rem) auto 0; border-radius:24px; overflow:hidden;
  aspect-ratio:16/9; background:var(--bg-2); box-shadow:var(--shadow);
}
.article-cover img{ width:100%; height:100%; object-fit:cover; }

.article-body{ max-width:680px; margin:0 auto; padding:clamp(2.5rem,5vw,4rem) 0; }
.prose{ font-size:1.19rem; line-height:1.66; color:var(--ink); }
.prose > * + *{ margin-top:1.3em; }
.prose h2{ font-size:1.6rem; margin-top:1.8em; }
.prose h3{ font-size:1.28rem; margin-top:1.6em; }
.prose p{ color:var(--ink); }
.prose a{ color:var(--accent); text-decoration:underline; text-underline-offset:2px; }
.prose img{ border-radius:18px; width:100%; }
.prose blockquote{
  border-left:3px solid var(--accent); padding-left:1.2rem;
  font-style:italic; color:var(--ink-dim); font-size:1.28rem;
}
.prose ul,.prose ol{ padding-left:1.4rem; }
.prose li{ margin-top:.5em; }
.prose li::marker{ color:var(--ink-mute); }
.prose code{ background:var(--bg-2); padding:.15em .4em; border-radius:5px; font-size:.88em; }
.prose pre{ background:var(--bg-2); padding:1.1rem; border-radius:14px; overflow-x:auto; }

.tag-row{ display:flex; gap:.5rem; flex-wrap:wrap; margin-top:2.5rem; }
.tag-row a{
  font-size:.82rem; padding:.4rem .9rem; border-radius:99px;
  background:var(--bg-2); color:var(--ink-dim);
  transition:background-color .25s;
}
.tag-row a:hover{ background:var(--line); color:var(--ink); }

.share-row{ display:flex; align-items:center; gap:1rem; margin-top:2.2rem; padding-top:2.2rem; border-top:1px solid var(--line); }
.share-row span{ font-size:.85rem; color:var(--ink-mute); }
.share-row a{
  width:36px; height:36px; border-radius:50%; display:grid; place-items:center;
  background:var(--bg-2); color:var(--ink-dim); transition:background-color .25s, color .25s;
}
.share-row a:hover{ background:var(--ink); color:var(--bg); }

.author-card{
  display:flex; align-items:center; gap:1.1rem;
  margin-top:2.5rem; padding:1.5rem; border-radius:20px; background:var(--bg-2);
}
.author-card img{ width:56px; height:56px; border-radius:50%; object-fit:cover; }
.author-card b{ display:block; font-size:1.02rem; }
.author-card span{ font-size:.86rem; color:var(--ink-dim); }

/* ===================================================================
   NEWSLETTER / CTA BAND
   =================================================================== */
.cta-band{
  border-radius:32px; padding:clamp(2.5rem,6vw,4.5rem);
  text-align:center; background:var(--ink); color:var(--bg);
}
.cta-band h2{ font-size:clamp(1.8rem,3.6vw,2.5rem); }
.cta-band p{ margin-top:.8rem; color:rgba(245,245,247,.72); max-width:46ch; margin-left:auto; margin-right:auto; }

.newsletter-form{
  margin-top:1.8rem; display:flex; gap:.7rem; justify-content:center; flex-wrap:wrap;
}
.newsletter-form input[type=email]{
  min-width:280px; padding:.85rem 1.3rem; border-radius:99px; border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.08); color:#fff; font-size:.98rem;
}
.newsletter-form input[type=email]::placeholder{ color:rgba(255,255,255,.5); }
.newsletter-form input[type=email]:focus{ outline:none; border-color:#fff; }
.newsletter-form button{
  padding:.85rem 1.7rem; border-radius:99px; background:#fff; color:#000; font-weight:500;
  transition:opacity .25s;
}
.newsletter-form button:hover{ opacity:.85; }
.form-note{ margin-top:1rem; font-size:.82rem; color:rgba(245,245,247,.55); }

/* ===================================================================
   FORMS (contact)
   =================================================================== */
.form-card{
  max-width:640px; margin:0 auto; background:var(--card);
  border:1px solid var(--line); border-radius:24px; padding:clamp(1.8rem,4vw,3rem);
}
.f-grid{ display:grid; gap:1.2rem; grid-template-columns:1fr 1fr; }
.f-grid .f-full{ grid-column:1 / -1; }
@media (max-width:600px){ .f-grid{ grid-template-columns:1fr; } }
.f-field label{ display:block; font-size:.85rem; color:var(--ink-dim); margin-bottom:.5rem; }
.f-field input,.f-field textarea{
  width:100%; padding:.85rem 1rem; border-radius:12px;
  border:1px solid var(--line-2); background:var(--bg-3); color:var(--ink);
  font-size:.98rem; transition:border-color .25s;
}
.f-field textarea{ min-height:130px; resize:vertical; }
.f-field input:focus,.f-field textarea:focus{ outline:none; border-color:var(--accent); }
.form-actions-row{ margin-top:1.6rem; }
.form-actions-row button{
  width:100%; padding:.9rem; border-radius:99px; background:var(--accent); color:#fff; font-size:1rem;
  transition:background-color .25s;
}
.form-actions-row button:hover{ background:var(--accent-dk); }

/* Honeypot — invisible to people, present for bots that fill in every field. */
.hp-field{
  position:absolute !important; left:-9999px !important; top:auto !important;
  width:1px !important; height:1px !important; overflow:hidden !important;
}

.alert{
  padding:1rem 1.3rem; border-radius:14px; margin-bottom:1.5rem; font-size:.92rem;
  border:1px solid var(--line-2);
}
.alert.is-ok{ background:rgba(52,199,89,.1); border-color:rgba(52,199,89,.4); }
.alert.is-err{ background:rgba(255,59,48,.1); border-color:rgba(255,59,48,.4); }

/* ===================================================================
   ABOUT
   =================================================================== */
.about-layout{ display:grid; grid-template-columns:.85fr 1.15fr; gap:clamp(2rem,6vw,4.5rem); align-items:center; }
.about-layout .photo{ border-radius:28px; overflow:hidden; aspect-ratio:4/5; background:var(--bg-2); box-shadow:var(--shadow); }
.about-layout .photo img{ width:100%; height:100%; object-fit:cover; }
.about-layout .text h2{ font-size:clamp(1.8rem,3.6vw,2.6rem); }
.about-layout .text p{ margin-top:1.1rem; font-size:1.1rem; color:var(--ink-dim); line-height:1.6; }
@media (max-width:820px){ .about-layout{ grid-template-columns:1fr; } }

/* ===================================================================
   PAGINATION
   =================================================================== */
.pager{ display:flex; gap:.5rem; justify-content:center; margin-top:clamp(2.5rem,5vw,3.5rem); }
.pager a,.pager span{
  min-width:40px; height:40px; padding:0 .4rem; display:grid; place-items:center;
  border-radius:99px; font-size:.88rem; color:var(--ink-dim); border:1px solid var(--line);
}
.pager a:hover{ border-color:var(--ink); color:var(--ink); }
.pager .is-current{ background:var(--ink); border-color:var(--ink); color:var(--bg); }

/* ===================================================================
   EMPTY STATE
   =================================================================== */
.empty-note{ text-align:center; padding:4rem 1rem; color:var(--ink-mute); }

/* ===================================================================
   FOOTER — modelled on apple.com's real global footer: compact, quiet,
   light gray, small type. No icons, no theme switcher.
   =================================================================== */
.site-footer{ background:var(--footer-bg); border-top:1px solid var(--line); font-size:12px; color:var(--ink-dim); }

.footer-blurb{ padding:1.1rem clamp(1.25rem,4vw,2.5rem); border-bottom:1px solid var(--line); }
.footer-blurb p{ max-width:70ch; }
.footer-blurb a{ color:var(--ink-dim); text-decoration:underline; text-underline-offset:2px; }
.footer-blurb a:hover{ color:var(--accent); }

.footer-cols{ display:flex; gap:clamp(1.5rem,4vw,3.5rem); flex-wrap:wrap; padding:2.2rem clamp(1.25rem,4vw,2.5rem) 1.6rem; }
.footer-col{ min-width:120px; }
.footer-col b{ display:block; font-weight:600; color:var(--ink); margin-bottom:.85rem; }
.footer-col a,.footer-col span{ display:block; color:var(--ink-dim); padding:.3rem 0; }
.footer-col a{ transition:color .2s; text-decoration:none; }
.footer-col a:hover{ color:var(--ink); text-decoration:underline; }

.footer-legal{ padding:0 clamp(1.25rem,4vw,2.5rem) 1.6rem; }
.footer-legal hr{ border:0; border-top:1px solid var(--line); margin-bottom:1rem; }
.footer-legal-row{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:.6rem .9rem; }
.footer-legal-links{ display:flex; align-items:center; gap:.6rem; flex-wrap:wrap; }
.footer-legal-links a{ color:var(--ink-dim); text-decoration:none; }
.footer-legal-links a:hover{ text-decoration:underline; }
.footer-legal-links span{ color:var(--line-2); }

/* ===================================================================
   LEGAL PAGES (Privacy / Terms)
   =================================================================== */
.legal-body{ max-width:720px; margin:0 auto; padding:clamp(2rem,5vw,3.5rem) 0 clamp(3rem,6vw,5rem); }
.legal-body .prose h2{ font-size:1.35rem; }
.legal-body .prose{ font-size:1.05rem; }

/* ===================================================================
   404
   =================================================================== */
.err-page{ min-height:100vh; display:grid; place-items:center; text-align:center; padding:2rem; }
.err-page .code{ font-size:.85rem; color:var(--accent); font-weight:600; }
.err-page h1{ font-size:clamp(2rem,5vw,3rem); margin-top:.6rem; }
.err-page p{ margin-top:.8rem; color:var(--ink-dim); }
.err-page .link-more{ margin-top:1.6rem; justify-content:center; }