/* ============================================================
   Atomic Habits Guide — Premium Design System
   Editorial book-site theme: serif display type, ink + amber
   palette, hairline rules, layered soft shadows.
   ============================================================ */
:root{
  --ink:#0d1f24;
  --ink-2:#122b31;
  --teal:#093638;
  --teal-2:#0e4c4e;
  --teal-3:#14655f;
  --teal-light:#e9f1ec;
  --amber:#c1912f;
  --amber-2:#d9ab4a;
  --amber-soft:#f0d896;
  --paper:#fbf8f1;
  --cream:#f4efe2;
  --card:#ffffff;
  --muted:#5f6e6a;
  --line:#e6dfcd;
  --line-soft:#efe9da;
  --radius:12px;
  --shadow-sm:0 1px 2px rgba(13,31,36,.05),0 4px 14px rgba(13,31,36,.05);
  --shadow-md:0 2px 4px rgba(13,31,36,.05),0 14px 34px rgba(13,31,36,.10);
  --shadow-lg:0 4px 8px rgba(13,31,36,.06),0 24px 48px rgba(13,31,36,.14);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:var(--amber-soft);color:var(--ink)}
a{color:var(--teal-2);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--amber);text-decoration:underline}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
img{max-width:100%}

/* ---------- Header ---------- */
header.site{background:rgba(251,248,241,.97);color:var(--ink);position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(13,31,36,.02),0 10px 30px rgba(13,31,36,.06)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:13px 24px;max-width:1120px;margin:0 auto;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:11px;font-family:var(--serif);font-size:1.28rem;font-weight:700;color:var(--ink);letter-spacing:.01em;line-height:1}
.logo::before{content:"A";display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background:linear-gradient(145deg,var(--teal-2),var(--teal));color:var(--amber-soft);font-family:var(--serif);font-size:1.05rem;font-weight:700;box-shadow:inset 0 0 0 1px rgba(240,216,150,.45),0 4px 10px rgba(9,54,56,.28);flex:none}
.logo span{color:var(--amber)}
.logo:hover{color:var(--ink);text-decoration:none}
nav.main{display:flex;flex-wrap:wrap;gap:2px;align-items:center}
nav.main a{color:#33413f;font-size:.9rem;font-weight:500;padding:8px 10px;border-radius:6px;position:relative}
nav.main a::after{content:"";position:absolute;left:10px;right:10px;bottom:3px;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
nav.main a:hover{color:var(--ink);text-decoration:none}
nav.main a:hover::after{transform:scaleX(1)}
nav.main a.active{color:var(--ink);font-weight:700}
nav.main a.active::after{transform:scaleX(1)}
.nav-cta{background:var(--amber);color:#fff!important;font-weight:700;border-radius:999px;padding:9px 18px!important;box-shadow:0 4px 12px rgba(193,145,47,.35);transition:background .18s ease,transform .18s ease,box-shadow .18s ease}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--amber-2);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 7px 16px rgba(193,145,47,.4)}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(118deg,rgba(9,40,44,.96) 0%,rgba(9,54,56,.90) 46%,rgba(14,76,78,.82) 78%,rgba(20,101,95,.78) 100%),url('images/hero-desk.jpg') center/cover no-repeat;color:#fff;padding:84px 0 76px}
.hero .badge{display:inline-block;background:rgba(217,171,74,.14);border:1px solid rgba(217,171,74,.65);color:var(--amber-soft);font-size:.74rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;padding:7px 15px;border-radius:999px;margin-bottom:22px}
.hero h1{font-family:var(--serif);font-weight:700;font-size:clamp(2.1rem,4.6vw,3.25rem);line-height:1.12;letter-spacing:-.01em;margin-bottom:18px}
.hero h1 em{color:var(--amber-2);font-style:italic}
.hero p{max-width:640px;margin:0 0 30px;color:#d9e6e1;font-size:1.1rem;line-height:1.75}
.btn{display:inline-block;font-weight:700;font-size:.97rem;padding:13px 27px;border-radius:999px;margin:4px 6px 4px 0;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;letter-spacing:.01em}
.btn-amber{background:linear-gradient(180deg,var(--amber-2),var(--amber));color:#fff;box-shadow:0 8px 20px rgba(193,145,47,.38)}
.btn-amber:hover{background:linear-gradient(180deg,#e2b557,#c99c38);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:0 12px 26px rgba(193,145,47,.45)}
.btn-ghost{border:1.5px solid rgba(207,227,223,.75);color:#fff;background:rgba(255,255,255,.03)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none;transform:translateY(-2px)}
.hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:44px;align-items:center;text-align:left}
.hero-grid .hero-copy p{margin-left:0}
.hero-grid .hero-copy{text-align:left}
@media(max-width:820px){.hero-grid{grid-template-columns:1fr;text-align:center}.hero-grid .hero-copy{text-align:center}.hero-grid .hero-copy p{margin-left:auto;margin-right:auto}.hero{padding:60px 0 56px}}

/* 3D book mock */
.book-scene{display:flex;justify-content:center;padding:16px 0;perspective:1100px}
.book{width:236px;height:340px;background:linear-gradient(120deg,#fffef9 0%,#f7f1de 62%,#efe6cd 100%);border-radius:5px 13px 13px 5px;box-shadow:26px 34px 54px rgba(3,16,19,.5),4px 8px 16px rgba(3,16,19,.35),inset 7px 0 14px rgba(13,31,36,.13);position:relative;padding:32px 24px;color:#15262b;transform:rotate(-3deg) rotateY(-9deg);transform-style:preserve-3d}
.book::before{content:"";position:absolute;left:0;top:0;bottom:0;width:11px;background:linear-gradient(90deg,#06282a,#0e4c4e 70%,#14655f);border-radius:5px 0 0 5px;box-shadow:inset -2px 0 3px rgba(0,0,0,.35)}
.book::after{content:"";position:absolute;top:5px;bottom:5px;right:-7px;width:7px;background:repeating-linear-gradient(180deg,#fffdf4 0 2px,#e7dfc9 2px 3px);border-radius:0 3px 3px 0;box-shadow:2px 2px 5px rgba(3,16,19,.3)}
.book .b-dots{color:var(--amber);font-size:1rem;letter-spacing:.42em;margin-bottom:18px;font-family:var(--sans)}
.book .b-title{font-family:var(--serif);font-size:1.78rem;line-height:1.1;font-weight:700;margin-bottom:12px;color:#10222a}
.book .b-sub{font-size:.8rem;color:#5a6b70;line-height:1.55;margin-bottom:22px}
.book .b-author{font-size:.9rem;letter-spacing:.24em;text-transform:uppercase;color:var(--teal);font-weight:700;position:absolute;bottom:28px;left:24px}
.book .b-tag{position:absolute;top:-14px;right:-12px;background:linear-gradient(180deg,var(--amber-2),var(--amber));color:#fff;font-size:.67rem;font-weight:700;letter-spacing:.05em;padding:7px 11px;border-radius:999px;box-shadow:0 6px 14px rgba(3,16,19,.35);z-index:2}

/* ---------- Praise / trust strip ---------- */
.praise{background:#fff;border-bottom:1px solid var(--line);padding:34px 0}
.praise .grid{gap:0}
.praise .p-item{text-align:center;padding:10px 22px}
.praise .p-item + .p-item{border-left:1px solid var(--line-soft)}
.praise .p-item strong{display:block;font-family:var(--serif);color:var(--teal);font-size:1.06rem;margin-bottom:5px;line-height:1.35}
.praise .p-item span{font-size:.85rem;color:var(--muted);line-height:1.55;display:block}
@media(max-width:820px){.praise .p-item + .p-item{border-left:none;border-top:1px solid var(--line-soft)}}

/* ---------- Layout & type ---------- */
main{padding:60px 0 24px}
section{margin-bottom:72px}
h1.page{font-family:var(--serif);font-size:clamp(1.95rem,3.6vw,2.55rem);line-height:1.16;letter-spacing:-.01em;margin-bottom:12px;color:var(--ink)}
h2{font-family:var(--serif);font-size:clamp(1.5rem,2.6vw,1.85rem);color:var(--ink);margin:0 0 16px;line-height:1.25;letter-spacing:-.005em}
h2::before{content:"";display:block;width:38px;height:3px;border-radius:2px;background:var(--amber);margin-bottom:14px}
.bonus h2::before,.praise h2::before{background:var(--amber-2)}
h3{font-family:var(--serif);font-size:1.22rem;color:var(--ink);margin:20px 0 8px;line-height:1.35}
p{margin-bottom:15px}
.lede{font-size:1.14rem;color:#44554f;max-width:780px;margin-bottom:26px;line-height:1.75}
ul,ol{margin:0 0 17px 22px}
li{margin-bottom:8px}
li::marker{color:var(--amber)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:20px}

/* Cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#ddd2b4}
.card h3{margin-top:0;font-size:1.18rem}
.card .num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:linear-gradient(145deg,var(--teal-2),var(--teal));color:var(--amber-soft);font-family:var(--serif);font-weight:700;font-size:1.02rem;margin-bottom:12px;box-shadow:inset 0 0 0 1px rgba(240,216,150,.35)}
.card .more,.more{font-size:.92rem;font-weight:700;color:var(--teal-2)}
.card .more:hover,.more:hover{color:var(--amber)}
.card{position:relative}
.card a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.learn-num{font-weight:700;color:var(--amber);font-size:.74rem;letter-spacing:.2em;display:block;margin-bottom:8px}

/* Callout */
.callout{background:var(--cream);border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:0 var(--radius) var(--radius) 0;padding:20px 24px;margin:24px 0;box-shadow:var(--shadow-sm)}
.callout p:last-child{margin-bottom:0}

/* Step path */
.step-path{counter-reset:step;list-style:none;margin-left:0}
.step-path li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:17px 22px;margin-bottom:12px;position:relative;padding-left:66px;box-shadow:var(--shadow-sm)}
.step-path li::before{counter-increment:step;content:counter(step);position:absolute;left:17px;top:15px;width:35px;height:35px;border-radius:50%;background:linear-gradient(180deg,var(--amber-2),var(--amber));color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px rgba(193,145,47,.35)}

/* Tables */
table{width:100%;border-collapse:collapse;margin:20px 0;background:#fff;font-size:.93rem;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
th,td{border-bottom:1px solid var(--line-soft);border-right:1px solid var(--line-soft);padding:11px 13px;text-align:left}
th:last-child,td:last-child{border-right:none}
tr:last-child td{border-bottom:none}
th{background:var(--ink);color:#f5efe0;font-weight:700;letter-spacing:.04em;font-size:.85rem;text-transform:uppercase}
tr:nth-child(even) td{background:#faf6ec}
.tracker td{height:38px;text-align:center}
.tracker td:first-child{text-align:left;font-weight:600;color:var(--ink)}
.tracker th{text-align:center}
.tracker th:first-child{text-align:left}

/* Quotes */
blockquote{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px 22px 64px;margin:22px 0;box-shadow:var(--shadow-sm);position:relative}
blockquote::before{content:"\201C";position:absolute;left:20px;top:2px;font-family:var(--serif);font-size:3.6rem;line-height:1;color:var(--amber)}
blockquote p{font-family:var(--serif);font-size:1.28rem;font-style:italic;line-height:1.5;margin-bottom:6px;color:var(--ink)}
blockquote cite{font-size:.8rem;color:var(--muted);font-style:normal;font-weight:700;letter-spacing:.14em;text-transform:uppercase}

/* Chapter index */
.chapter{background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;padding:22px 10px;margin-bottom:0;transition:background .18s ease,padding-left .18s ease}
.chapter:first-of-type{border-top:1px solid var(--line)}
.chapter:hover{background:var(--cream);padding-left:18px}
.chapter h3{margin:2px 0 6px;font-size:1.3rem}
.chapter p{color:#44554f;margin-bottom:0}
.chapter .ch-num{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--amber);font-weight:700}
.ch-list{columns:2;column-gap:32px;margin-left:20px}
@media(max-width:640px){.ch-list{columns:1}}

.small{font-size:.9rem;color:var(--muted)}
.center{text-align:center}

/* ---------- Bonus band ---------- */
.bonus{background:linear-gradient(140deg,var(--teal) 0%,var(--ink-2) 90%);color:#e6efec;border-radius:16px;padding:38px;box-shadow:var(--shadow-lg)}
.bonus h2,.bonus h3{color:#fff}
.bonus h2::before{background:var(--amber-2)}
.bonus a{color:var(--amber-soft)}
.bonus .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:#e6efec;box-shadow:none}
.bonus .card:hover{background:rgba(255,255,255,.09);border-color:rgba(240,216,150,.4)}
.bonus .card h3{color:#fff}
.bonus .card .more{color:var(--amber-soft)}

/* ---------- Author band ---------- */
.author-band{display:grid;grid-template-columns:92px 1fr;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.author-ava{width:92px;height:92px;border-radius:50%;background:linear-gradient(145deg,var(--teal-2),var(--teal));color:var(--amber-soft);display:flex;align-items:center;justify-content:center;font-size:1.9rem;font-weight:700;font-family:var(--serif);border:3px solid var(--amber-2);box-shadow:var(--shadow-sm)}
@media(max-width:560px){.author-band{grid-template-columns:1fr;text-align:center}.author-ava{margin:0 auto}}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:4px 24px;margin-bottom:12px;box-shadow:var(--shadow-sm);transition:border-color .18s ease}
.faq:hover{border-color:#ddd2b4}
.faq summary{cursor:pointer;font-family:var(--serif);font-weight:700;color:var(--ink);padding:16px 30px 16px 0;font-size:1.08rem;list-style:none;position:relative;line-height:1.4}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:2px;top:50%;transform:translateY(-50%);font-family:var(--sans);font-weight:400;font-size:1.5rem;color:var(--amber);transition:transform .2s ease}
.faq[open ] summary::after{content:"\2013"}
.faq p{padding-bottom:17px;color:#44554f}

/* ---------- Photos ---------- */
.page-banner{margin:10px 0 32px}
.page-banner img{width:100%;height:320px;object-fit:cover;border-radius:14px;box-shadow:var(--shadow-md);display:block}
.inline-photo{margin:26px 0 10px}
.inline-photo img{width:100%;height:340px;object-fit:cover;border-radius:14px;box-shadow:var(--shadow-md);display:block}
.page-banner figcaption,.inline-photo figcaption{font-size:.8rem;color:var(--muted);margin-top:9px;text-align:center}
@media(max-width:640px){.page-banner img{height:205px}.inline-photo img{height:220px}}

/* ---------- Footer ---------- */
footer.site{background:linear-gradient(180deg,var(--ink-2),#08161a);color:#b9c6c2;margin-top:56px;padding:52px 0 30px;font-size:.92rem}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:34px}
@media(max-width:820px){footer.site .cols{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){footer.site .cols{grid-template-columns:1fr}}
footer.site h4{font-family:var(--serif);color:#fff;margin-bottom:13px;font-size:1.02rem;letter-spacing:.02em}
footer.site .cols div:first-child h4{font-size:1.18rem}
footer.site .cols div:first-child h4::before{content:"A";display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:7px;background:linear-gradient(145deg,var(--teal-2),var(--teal));color:var(--amber-soft);font-size:.9rem;margin-right:9px;box-shadow:inset 0 0 0 1px rgba(240,216,150,.45);vertical-align:-6px}
footer.site p{color:#9db0ab;line-height:1.65}
footer.site a{color:#b9c6c2;display:block;padding:4px 0}
footer.site a:hover{color:var(--amber-2);text-decoration:none}
.disclaimer{border-top:1px solid #24414a;padding-top:18px;font-size:.84rem;color:#84988f;text-align:center}

/* ---------- Small screens ---------- */
@media(max-width:640px){
  body{font-size:16px}
  .wrap{padding:0 18px}
  main{padding:44px 0 16px}
  section{margin-bottom:52px}
  .header-in{justify-content:center;text-align:center;padding:12px 16px}
  nav.main{justify-content:center}
  .book{width:min(224px,72vw);height:322px}
  .bonus{padding:28px 22px}
  .tracker{font-size:.72rem}
  .tracker td,.tracker th{padding:5px 3px}
  blockquote{padding:24px 20px 18px 52px}
  blockquote::before{left:14px;font-size:3rem}
}

/* ---------- Print ---------- */
@media print{
  header.site,footer.site,.no-print,.page-banner,.inline-photo{display:none!important}
  body{background:#fff;font-size:12pt}
  main{padding:0}
  section{margin-bottom:20px}
  table{font-size:9pt;box-shadow:none}
  th{background:#fff;color:#000;border-bottom:2px solid #000}
  .card,.chapter,blockquote,.faq{box-shadow:none}
}

/* ---------- Breadcrumbs ---------- */
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:9px;font-size:.85rem;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--teal-2);font-weight:600}
.crumbs a:hover{color:var(--amber)}
.crumb-sep{color:var(--amber);font-weight:700}
.crumbs [aria-current]{color:var(--ink);font-weight:600}

/* ---------- Article byline ---------- */
.byline{font-size:.88rem;color:var(--muted);letter-spacing:.03em;margin:-2px 0 20px}
.byline::before{content:"";display:inline-block;width:22px;height:2px;background:var(--amber);border-radius:2px;vertical-align:middle;margin-right:10px}

/* ---------- "In short" summary box ---------- */
.inshort{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal-3);border-radius:0 var(--radius) var(--radius) 0;padding:19px 24px;margin:26px 0;box-shadow:var(--shadow-sm)}
.inshort-label{display:block;font-size:.72rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--amber);margin-bottom:6px}
.inshort p{margin-bottom:0;color:#33413f}

/* ---------- Related guides ---------- */
.related{border-top:1px solid var(--line);padding-top:36px}
.related .card h3{font-size:1.12rem}
.related .card h3 a{color:var(--ink)}
.related .card h3 a:hover{color:var(--amber);text-decoration:none}
.related .card p{margin-bottom:0;color:#44554f;font-size:.95rem}