/* Design system: light, modern — Linear / Stripe / Vercel vibe */
:root {
  /* Theme colors */
  --bg: #F1F5F9; /* soft blue-gray */
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --card: rgba(255, 255, 255, 0.78);

  --text: #0B1220;
  --muted: #475569;

  --border: rgba(15, 23, 42, 0.10);

  --accent: #2563EB;
  --accent-hover: #1D4ED8;
  --accent-gradient: linear-gradient(90deg, #2563EB, #06B6D4);

  --glow-blue: rgba(37, 99, 235, 0.18);
  --glow-cyan: rgba(6, 182, 212, 0.14);

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Typography */
  --font-heading: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --text-body: clamp(0.95rem, 1vw, 1.05rem);
  --text-sm: 0.875rem;

  /* Layout */
  --radius: 12px;
  --radius-card: 18px;
  --radius-pill: 9999px;
  --max-width: 760px;

  --transition: 0.25s ease;

  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-card-hover: 0 18px 50px rgba(15, 23, 42, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Premium Vercel grid background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, var(--glow-blue), transparent 55%),
    radial-gradient(circle at 85% 30%, var(--glow-cyan), transparent 50%),
    linear-gradient(to bottom, rgba(255,255,255,0.65), rgba(241,245,249,1)),
    repeating-linear-gradient(
      to right,
      rgba(15, 23, 42, 0.04) 0px,
      rgba(15, 23, 42, 0.04) 1px,
      transparent 1px,
      transparent 64px
    ),
    repeating-linear-gradient(
      to bottom,
      rgba(15, 23, 42, 0.04) 0px,
      rgba(15, 23, 42, 0.04) 1px,
      transparent 1px,
      transparent 64px
    );
  z-index: -2;
  opacity: 0.65;
}

/* Noise overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("https://grainy-gradients.vercel.app/noise.svg");
  opacity: 0.06;
  z-index: -1;
  pointer-events: none;
}

/* ---- Navbar ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(241, 245, 249, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition);
}

.nav-logo:hover { color: var(--accent); }
.nav-logo:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
  transition: width var(--transition);
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after { width: 100%; }
.nav-links a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- Main ---- */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-10) var(--space-6) var(--space-16);
}

/* ---- Home: Hero ---- */
.home-hero {
  position: relative;
  padding: var(--space-12) 0 var(--space-10);
  margin-bottom: var(--space-8);
}

.home-hero::before {
  content: '';
  position: absolute;
  width: min(85vw, 420px);
  height: min(85vw, 420px);
  top: 48%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    ellipse,
    rgba(37, 99, 235, 0.12) 0%,
    rgba(6, 182, 212, 0.08) 50%,
    transparent 78%
  );
  border-radius: 20px;
  pointer-events: none;
  filter: blur(4px);
}

.home-hero-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-10);
  animation: heroFadeIn 0.6s ease-out;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (min-width: 720px) {
  .home-hero-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-12);
    text-align: left;
  }

  .home-hero-text {
    align-items: flex-start;
    text-align: left;
  }
}

/* Hero photo */
.home-photo-wrap {
  flex-shrink: 0;
  width: clamp(240px, 42vw, 330px);
  height: clamp(240px, 42vw, 330px);
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  transform: translateZ(0);
}

.home-photo-wrap::before {
  content: '';
  position: absolute;
  inset: -5px;
  border-radius: 22px;
  background: linear-gradient(
    135deg,
    rgba(37, 99, 235, 0.40),
    rgba(6, 182, 212, 0.22),
    rgba(37, 99, 235, 0.18)
  );
  z-index: 0;
  filter: blur(14px);
  opacity: 0.95;
}

.home-photo-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
  z-index: 2;
}

.home-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 18px;
  position: relative;
  z-index: 1;
  box-shadow: 0 25px 70px rgba(15, 23, 42, 0.20);
  filter: brightness(1.05) contrast(1.08) saturate(1.06);
  transition: transform 0.35s ease;
}

.home-photo-wrap:hover .home-photo {
  transform: scale(1.03);
}

.home-photo-placeholder {
  display: none;
  width: 100%;
  height: 100%;
  border-radius: 18px;
  background: var(--accent-gradient);
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.home-photo-placeholder span {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
}

/* Hero text */
.home-hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 52ch;
}

.home-greeting-line {
  margin: 0 0 var(--space-4);
  line-height: 1.1;
  letter-spacing: -0.02em;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.4rem;
}

@media (min-width: 720px) {
  .home-greeting-line {
    justify-content: flex-start;
  }
}

.greeting-prefix {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.15rem, 2vw, 1.25rem);
  color: rgba(71, 85, 105, 0.95);
}

.greeting-name {
  font-family: ui-monospace, "Cascadia Code", "SF Mono", monospace;
  font-weight: 900;
  font-size: clamp(2.4rem, 5vw, 3.25rem);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  text-shadow: 0 0 22px rgba(37, 99, 235, 0.18);
}

.cursor-console {
  font-family: ui-monospace, "Cascadia Code", "SF Mono", monospace;
  font-weight: 900;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  color: rgba(37, 99, 235, 0.85);
  display: inline-block;
  transform: translateY(-1px);
  animation: cursorBlink 0.95s steps(1) infinite;
}

@keyframes cursorBlink {
  50% { opacity: 0; }
}

.home-hero-text p {
  margin: 0 0 var(--space-4);
  color: rgba(71, 85, 105, 0.92);
  font-size: var(--text-body);
  line-height: 1.75;
}

.home-hero-text p:last-child {
  margin-bottom: 0;
}

/* Highlight link */
.link-highlight {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  background: linear-gradient(180deg, transparent 62%, rgba(37, 99, 235, 0.16) 62%);
  transition: background var(--transition);
}

.link-highlight:hover {
  background: linear-gradient(180deg, transparent 62%, rgba(37, 99, 235, 0.28) 62%);
}

.link-highlight:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---- Sections ---- */
.section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.section:last-of-type { border-bottom: none; }

.section.animate-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* SaaS section heading */
.section h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  margin: 0 0 var(--space-6);
  color: var(--text);
  padding-bottom: var(--space-2);
  position: relative;
  width: fit-content;
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  opacity: 0.95;
}

.section h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.25);
}

/* ---- Dashboard grid ---- */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin: var(--space-4) 0 0;
}

@media (min-width: 720px) {
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Premium glass cards */
.dash-card {
  background: var(--card);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.dash-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.13), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.dash-card:hover::before {
  opacity: 1;
}

.dash-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(37, 99, 235, 0.22);
}

.dash-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: rgba(37, 99, 235, 0.92);
  margin: 0 0 var(--space-2);
}

.dash-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--text);
  margin: 0 0 var(--space-2);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.dash-sub {
  font-size: var(--text-sm);
  color: rgba(71, 85, 105, 0.92);
  margin: 0;
  line-height: 1.6;
}

/* Tags */
.dash-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(71, 85, 105, 0.95);
  background: rgba(15, 23, 42, 0.04);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.tag-industry {
  color: var(--accent);
  background: rgba(37, 99, 235, 0.09);
  border-color: rgba(37, 99, 235, 0.22);
}

.tag-live {
  color: #059669;
  background: rgba(5, 150, 105, 0.10);
  border-color: rgba(5, 150, 105, 0.22);
}

/* Stack icons */
.stack-icons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-4) 0 0;
}

.stack-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(71, 85, 105, 0.92);
}

.stack-item img {
  width: 18px;
  height: 18px;
  object-fit: contain;
  flex-shrink: 0;
  filter: grayscale(1) contrast(1.1);
  opacity: 0.9;
}

.stack-item span {
  white-space: nowrap;
}

/* ---- Focus Areas ---- */
.focus-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin: var(--space-6) 0;
}

@media (min-width: 720px) {
  .focus-grid { grid-template-columns: repeat(3, 1fr); }
}

.focus-card {
  background: var(--card);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.focus-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37, 99, 235, 0.22);
  box-shadow: var(--shadow-card-hover);
}

.focus-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 900;
  margin: 0 0 var(--space-3);
  color: var(--text);
  letter-spacing: -0.01em;
}

.focus-card ul {
  margin: 0;
  padding-left: 1.125rem;
  color: rgba(71, 85, 105, 0.92);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.focus-card li { margin-bottom: var(--space-2); }

/* ---- Quick links pills ---- */
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
}

.pill {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 650;
  color: rgba(71, 85, 105, 0.92);
  text-decoration: none;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: var(--radius-pill);
  transition: color var(--transition), border-color var(--transition), box-shadow var(--transition);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(14px);
}

.pill:hover {
  color: var(--accent);
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.12);
}

.pill:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- Main content links ---- */
.main a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

.main a:hover { color: var(--accent-hover); }
.main a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- Page titles ---- */
.main > h1:first-child {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 1.75rem);
  font-weight: 900;
  margin: 0 0 var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(15, 23, 42, 0.10);
  color: var(--text);
  letter-spacing: -0.02em;
}

.main h2 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 900;
  margin: var(--space-8) 0 var(--space-2);
  color: var(--text);
  letter-spacing: -0.01em;
}

.main h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  margin: var(--space-5) 0 var(--space-2);
  color: var(--text);
}

.main p, .main li { color: rgba(71, 85, 105, 0.92); margin: 0 0 var(--space-3); }
.main ul { padding-left: 1.25rem; }
.main li { margin-bottom: var(--space-1); }

.main table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: var(--text-sm);
}

.main th, .main td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: rgba(71, 85, 105, 0.92);
}

.main th {
  background: rgba(255, 255, 255, 0.75);
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text);
}

.main code {
  background: rgba(15, 23, 42, 0.06);
  color: var(--text);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  font-size: 0.875em;
}

/* ---- Blog list ---- */
.blog-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.blog-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.blog-list a { font-weight: 700; color: var(--text); }
.blog-list a:hover { color: var(--accent); }
.blog-list time { font-size: var(--text-sm); color: rgba(71, 85, 105, 0.92); flex-shrink: 0; }

/* ---- Post page ---- */
.post-page { padding-bottom: var(--space-8); }

.post-header { margin-bottom: var(--space-6); }

.post-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 2.5vw, 1.6rem);
  font-weight: 900;
  margin: 0 0 var(--space-2);
  color: var(--text);
  letter-spacing: -0.02em;
}

.post-header time { font-size: var(--text-sm); color: rgba(71, 85, 105, 0.92); }

.post-content p { margin: 0 0 var(--space-4); color: rgba(71, 85, 105, 0.92); }

.post-back { margin: var(--space-6) 0 0; }
.post-back a { font-size: var(--text-sm); }

/* ---- CV: Buttons ---- */
.cv-actions {
  margin-bottom: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.28);
  transform: translateY(-2px);
}

.main a.btn { color: #fff; }
.main a.btn:hover { color: #fff; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.muted { color: rgba(71, 85, 105, 0.92); font-size: var(--text-sm); }

/* ---- Footer ---- */
.footer {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  color: rgba(71, 85, 105, 0.92);
  font-size: var(--text-sm);
}

.footer a { color: var(--accent); }
.footer a:hover { color: var(--accent-hover); }

.footer-copy { margin-top: var(--space-2); }

.footer-fun {
  margin-top: var(--space-4);
  font-size: 0.8125rem;
  color: rgba(71, 85, 105, 0.92);
  opacity: 0.9;
}

.section.animate-on-scroll.is-visible .dash-card,
.section.animate-on-scroll.is-visible .focus-card {
  animation: cardPop 0.6s ease forwards;
}

@keyframes cardPop {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}