/* ==============================================
   RANJITH MAHENDRAN — Portfolio Stylesheet
   ============================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:         #0e0f11;
  --bg2:        #13151a;
  --bg3:        #191c23;
  --surface:    #1d2029;
  --border:     rgba(255, 255, 255, 0.07);
  --border-hi:  rgba(255, 255, 255, 0.14);
  --ink:        #e8eaf0;
  --ink2:       #9aa0b0;
  --ink3:       #5a6070;
  --gold:       #c9a96e;
  --gold-dim:   rgba(201, 169, 110, 0.15);
  --gold-line:  rgba(201, 169, 110, 0.3);
  --white:      #ffffff;
  --font-serif: 'Cormorant Garamond', serif;
  --font-sans:  'Outfit', sans-serif;
  --font-mono:  'DM Mono', monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 300;
  letter-spacing: 0.01em;
}

/* ==============================================
   NAV
   ============================================== */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 4rem;
  border-bottom: 1px solid transparent;
  transition: background 0.4s, border-color 0.4s;
}

nav.scrolled {
  background: rgba(14, 15, 17, 0.94);
  border-color: var(--border);
  backdrop-filter: blur(16px);
}

.nav-wordmark {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.nav-wordmark b {
  font-weight: 600;
  color: var(--gold);
  font-style: normal;
}

.nav-links {
  display: flex;
  gap: 3rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink3);
  text-decoration: none;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  border: 1px solid var(--gold-line);
  padding: 0.55rem 1.4rem;
  transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
  background: var(--gold-dim);
}

/* ==============================================
   HERO
   ============================================== */

#hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 0;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 70% 70% at 30% 50%, black 30%, transparent 80%);
  pointer-events: none;
}

.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 5rem 6rem 4rem;
  position: relative;
  z-index: 1;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.2s forwards;
}

.hero-kicker::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--gold);
}

h1.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 6.5vw, 6.5rem);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 0.6rem;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.35s forwards;
}

h1.hero-name .serif-italic {
  font-style: italic;
  color: var(--gold);
}

.hero-role {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 300;
  font-style: italic;
  color: var(--ink2);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.5s forwards;
}

.hero-bio {
  font-size: 0.92rem;
  color: var(--ink2);
  max-width: 480px;
  line-height: 1.9;
  margin-bottom: 2.8rem;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.65s forwards;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.8s forwards;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--ink3);
  border: 1px solid var(--border);
  padding: 0.3rem 0.85rem;
  letter-spacing: 0.06em;
  transition: border-color 0.2s, color 0.2s;
}

.hero-tag:hover {
  border-color: var(--gold-line);
  color: var(--gold);
}

.hero-right {
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 3rem;
  position: relative;
  z-index: 1;
  opacity: 0;
  animation: fadeIn 1s ease 0.9s forwards;
}

.stat-block {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.stat-block:last-child { border-bottom: none; }
.stat-block:first-child { padding-top: 0; }

.stat-number {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 300;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-number sup {
  font-size: 1.4rem;
  color: var(--gold);
  vertical-align: super;
  font-style: italic;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--gold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0.5rem 0;
}

.stat-detail {
  font-size: 0.78rem;
  color: var(--ink3);
  line-height: 1.6;
}

/* ==============================================
   ANIMATIONS
   ============================================== */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ==============================================
   SHARED SECTION LAYOUT
   ============================================== */

.section-outer {
  padding: 7rem 4rem;
}

.section-outer.toned { background: var(--bg2); }
.section-outer.dark  { background: var(--bg); }

.inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 3.5rem;
}

.eyebrow-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink3);
  letter-spacing: 0.2em;
}

.eyebrow-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 300;
  color: var(--white);
  letter-spacing: 0.02em;
}

.eyebrow-rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border), transparent);
  margin-left: 0.5rem;
}

/* ==============================================
   SKILLS
   ============================================== */

.skills-intro {
  font-size: 0.95rem;
  color: var(--ink2);
  max-width: 640px;
  line-height: 1.9;
  margin-bottom: 4rem;
}

.domains {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
}

.domain {
  padding: 2.5rem 2.2rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  transition: background 0.3s;
}

.domain:nth-child(3n)        { border-right: none; }
.domain:nth-last-child(-n+3) { border-bottom: none; }
.domain:hover                { background: var(--bg3); }

.domain::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.domain:hover::before { transform: scaleX(1); }

.domain-index {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--ink3);
  letter-spacing: 0.15em;
  margin-bottom: 1.2rem;
  display: block;
}

.domain-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.7rem;
}

.domain-desc {
  font-size: 0.8rem;
  color: var(--ink3);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.stag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink2);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  letter-spacing: 0.04em;
  transition: border-color 0.2s, color 0.2s;
}

.domain:hover .stag { border-color: rgba(201, 169, 110, 0.2); }

.stag.primary {
  color: var(--gold);
  border-color: var(--gold-line);
  background: var(--gold-dim);
}

/* Competency bars */
.competency-band {
  margin-top: 5rem;
  padding-top: 4rem;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 6rem;
}

.comp-row {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.comp-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.comp-name {
  font-size: 0.82rem;
  color: var(--ink);
  font-weight: 400;
}

.comp-level {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.bar-track {
  height: 1px;
  background: var(--border);
  position: relative;
}

.bar-fill {
  position: absolute;
  left: 0; top: -1px;
  height: 3px;
  background: linear-gradient(to right, var(--gold), rgba(201, 169, 110, 0.4));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Tooling strip */
.tooling-strip {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.tooling-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink3);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tool {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink2);
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  transition: border-color 0.2s, color 0.2s;
}

.tool:hover {
  border-color: var(--gold-line);
  color: var(--gold);
}

/* ==============================================
   APPROACH
   ============================================== */

.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7rem;
  align-items: start;
}

.approach-prose h3 {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  font-weight: 300;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 1.5rem;
}

.approach-prose h3 em {
  font-style: italic;
  color: var(--gold);
}

.approach-prose p {
  font-size: 0.88rem;
  color: var(--ink2);
  line-height: 1.95;
  margin-bottom: 1rem;
}

.principles {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.principle {
  padding: 1.4rem 1.8rem;
  border: 1px solid var(--border);
  border-bottom: none;
  transition: background 0.25s, border-color 0.25s;
  position: relative;
}

.principle:last-child { border-bottom: 1px solid var(--border); }

.principle::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.35s ease;
}

.principle:hover {
  background: var(--surface);
  border-color: var(--border-hi);
}

.principle:hover::before { transform: scaleY(1); }

.principle-name {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.principle-desc {
  font-size: 0.78rem;
  color: var(--ink3);
  line-height: 1.65;
}

/* ==============================================
   CERTIFICATIONS
   ============================================== */

.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
}

.cert {
  padding: 2.2rem 2rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.25s;
  position: relative;
  overflow: hidden;
}

.cert:nth-child(3n)        { border-right: none; }
.cert:nth-last-child(-n+3) { border-bottom: none; }
.cert:hover                { background: var(--bg3); }

.cert-line {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.cert:hover .cert-line { transform: scaleX(1); }

.cert-abbr-large {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 300;
  font-style: italic;
  color: rgba(201, 169, 110, 0.18);
  line-height: 1;
  margin-bottom: 1.2rem;
  display: block;
  letter-spacing: 0.02em;
}

.cert-title {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 0.4rem;
}

.cert-issuer {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--ink3);
  letter-spacing: 0.06em;
  margin-bottom: 0.8rem;
}

.cert-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--gold);
  letter-spacing: 0.1em;
}

/* ==============================================
   LANGUAGES
   ============================================== */

.lang-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--border);
}

.lang {
  padding: 2rem 1.8rem;
  border-right: 1px solid var(--border);
  text-align: left;
  transition: background 0.25s;
}

.lang:last-child { border-right: none; }
.lang:hover      { background: var(--bg3); }

.lang-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.25rem;
}

.lang-level {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--gold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.lang-pips {
  display: flex;
  gap: 4px;
}

.pip {
  width: 20px;
  height: 2px;
  background: var(--border);
  transition: background 0.2s;
}

.pip.on   { background: var(--gold); }
.pip.half { background: rgba(201, 169, 110, 0.4); }

/* ==============================================
   CONTACT
   ============================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 8rem;
  align-items: center;
}

.contact-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 1.4rem;
}

.contact-headline em {
  font-style: italic;
  color: var(--gold);
}

.contact-body {
  font-size: 0.88rem;
  color: var(--ink2);
  line-height: 1.9;
  margin-bottom: 2.2rem;
}

.contact-cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--white);
  border: 1px solid var(--border-hi);
  padding: 0.9rem 2.2rem;
  text-decoration: none;
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}

.contact-cta:hover {
  border-color: var(--gold-line);
  color: var(--gold);
  background: var(--gold-dim);
}

.link-stack {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.5rem;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--ink);
  transition: background 0.2s, border-color 0.2s;
}

.link-item:hover {
  background: var(--surface);
  border-color: var(--border-hi);
}

.link-platform {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.link-handle {
  font-size: 0.82rem;
  color: var(--ink2);
}

.link-arrow {
  color: var(--gold);
  font-size: 0.8rem;
}

/* ==============================================
   FOOTER
   ============================================== */

footer {
  padding: 2rem 4rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--ink3);
}

.footer-right {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink3);
  letter-spacing: 0.1em;
}

/* ==============================================
   DIVIDER
   ============================================== */

.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
}

/* ==============================================
   SCROLL REVEAL
   ============================================== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.reveal.in { opacity: 1; transform: none; }

.d1 { transition-delay: 0.08s; }
.d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; }
.d5 { transition-delay: 0.40s; }

/* ==============================================
   RESPONSIVE
   ============================================== */

@media (max-width: 1000px) {
  nav { padding: 1.2rem 2rem; }
  .nav-links { display: none; }

  #hero { grid-template-columns: 1fr; }
  .hero-left { padding: 7rem 2rem 3rem; }
  .hero-right {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
  }

  .section-outer { padding: 5rem 2rem; }

  .domains,
  .certs-grid { grid-template-columns: 1fr 1fr; }

  .domain:nth-child(3n) { border-right: 1px solid var(--border); }
  .domain:nth-child(2n) { border-right: none; }

  .certs-grid .cert:nth-child(3n) { border-right: 1px solid var(--border); }
  .certs-grid .cert:nth-child(2n) { border-right: none; }

  .approach-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }

  .competency-band { grid-template-columns: 1fr; gap: 2rem; }

  .lang-row { grid-template-columns: repeat(3, 1fr); }
  .lang:nth-child(3) { border-right: none; }
  .lang:nth-child(4),
  .lang:nth-child(5) { border-top: 1px solid var(--border); }

  footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 600px) {
  .domains,
  .certs-grid { grid-template-columns: 1fr; }

  .domain { border-right: none !important; }
  .cert   { border-right: none !important; }

  .lang-row { grid-template-columns: 1fr 1fr; }
}