/* Linkvo — portfolio
   One stylesheet for all pages. No build step, no dependencies. */

:root {
  --paper: #FAF9F6;
  --paper-2: #F2F0EA;
  --ink: #1A1A17;
  --ink-2: #3D3B36;
  --muted: #6E6B63;
  --line: #DFDBD2;
  --accent: #1B4D3E;
  --accent-soft: #E8EFEA;
  --max: 74rem;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121210;
    --paper-2: #1B1B18;
    --ink: #EDEAE3;
    --ink-2: #C9C5BC;
    --muted: #918D84;
    --line: #2E2E29;
    --accent: #7FB39F;
    --accent-soft: #1C2B25;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }
/* .narrow giữ nguyên chiều rộng container (để lề trái thẳng hàng với mọi section khác)
   và chỉ giới hạn chiều rộng đọc của nội dung bên trong. */
.wrap.narrow > * { max-width: 46rem; }

a { color: inherit; }

/* ---------- header ---------- */

header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  z-index: 10;
}

.bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.15rem 2rem;
  max-width: var(--max);
  margin: 0 auto;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--serif);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  font-weight: 600;
}

nav { display: flex; gap: 1.75rem; font-size: 0.9rem; }

nav a {
  text-decoration: none;
  color: var(--muted);
  transition: color 0.15s;
}

nav a:hover, nav a[aria-current="page"] { color: var(--ink); }

/* ---------- type ---------- */

h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; }

h1 { font-size: clamp(2.6rem, 6vw, 4.1rem); margin: 0 0 1.5rem; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 0 0 1.2rem; }
h3 { font-size: 1.18rem; margin: 0 0 0.5rem; line-height: 1.3; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.4rem;
  font-weight: 600;
}

.lead { font-size: 1.2rem; line-height: 1.6; color: var(--ink-2); max-width: 42rem; }

p { margin: 0 0 1.1rem; }

.muted { color: var(--muted); }

/* ---------- layout ---------- */

section { padding: 5.5rem 0; }
section + section { border-top: 1px solid var(--line); }
.hero { padding: 7rem 0 6rem; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }

@media (max-width: 820px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 2rem; }
  section { padding: 4rem 0; }
  .hero { padding: 4.5rem 0 3.5rem; }
  .wrap { padding: 0 1.35rem; }
  .bar { padding: 1rem 1.35rem; }
  body { font-size: 16px; }
}

/* ---------- cards ---------- */

.card {
  border: 1px solid var(--line);
  background: var(--paper-2);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

a.card:hover { border-color: var(--accent); transform: translateY(-2px); }

.price {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--accent);
  margin: 0 0 1rem;
}

.card p { color: var(--ink-2); }

.card .more {
  margin-top: auto;
  padding-top: 1.4rem;
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}

/* ---------- work items ---------- */

.work { border-top: 1px solid var(--line); padding: 2.4rem 0; display: grid; grid-template-columns: 13rem 1fr; gap: 2.5rem; }
.work:last-child { border-bottom: 1px solid var(--line); }
.work .meta { font-size: 0.86rem; color: var(--muted); }
.work h3 { margin-bottom: 0.6rem; }

@media (max-width: 820px) {
  .work { grid-template-columns: 1fr; gap: 0.8rem; padding: 2rem 0; }
}

/* ---------- lists ---------- */

ul.clean { list-style: none; padding: 0; margin: 0; }
ul.clean li { padding: 0.65rem 0 0.65rem 1.6rem; position: relative; border-bottom: 1px solid var(--line); color: var(--ink-2); }
ul.clean li:last-child { border-bottom: 0; }
ul.clean li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

ol.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; }
ol.steps li { counter-increment: s; padding: 1.5rem 0 1.5rem 3.4rem; position: relative; border-top: 1px solid var(--line); }
ol.steps li::before {
  content: counter(s);
  position: absolute; left: 0; top: 1.45rem;
  font-family: var(--serif); font-size: 1.1rem; color: var(--accent);
  border: 1px solid var(--line); border-radius: 50%;
  width: 2.2rem; height: 2.2rem; display: grid; place-items: center;
}

/* ---------- ảnh chụp deliverable ---------- */

.shots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem 1.4rem; margin: 3rem 0 1rem; }
.shots figure { margin: 0; }
.shots figure.wide { grid-column: 1 / -1; }
.shots img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--line);
  background: var(--paper-2);
}
/* Hai ảnh cạnh nhau: khung bằng nhau để caption thẳng hàng, ảnh không bị cắt hay méo. */
.shots figure:not(.wide) img { aspect-ratio: 16 / 10; height: auto; object-fit: contain; padding: 0.5rem; }
.shots figcaption { font-size: 0.86rem; line-height: 1.55; color: var(--muted); margin-top: 0.75rem; }
.shots figcaption strong { color: var(--ink-2); font-weight: 600; }

@media (max-width: 820px) {
  .shots { grid-template-columns: 1fr; margin: 2.2rem 0 0.5rem; }
}

/* ---------- callout ---------- */

.callout {
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  padding: 1.6rem 1.9rem;
  margin: 2rem 0;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- buttons ---------- */

.btns { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2.4rem; }

.btn {
  display: inline-block;
  padding: 0.85rem 1.7rem;
  background: var(--accent);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid var(--accent);
  transition: opacity 0.15s;
}
.btn:hover { opacity: 0.88; }

.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--accent); opacity: 1; }

/* ---------- footer ---------- */

footer { border-top: 1px solid var(--line); padding: 3rem 0; font-size: 0.9rem; color: var(--muted); }
footer a { color: var(--ink-2); }
.foot { display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }

/* ---------- misc ---------- */

.tag {
  display: inline-block;
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.25rem 0.7rem;
  margin: 0 0.4rem 0.4rem 0;
}

table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.95rem; }
th, td { text-align: left; padding: 0.85rem 1rem 0.85rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; }