/* ============================================================
   SREEKAR KUTADI — PORTFOLIO STYLES
   Single stylesheet shared by all pages.
   Edit sections by searching for === headings.
============================================================ */


/* === CSS VARIABLES ===
   Dark theme only. Edit these values to retheme the site.
*/
:root {
  --bg:             #111111;
  --bg-secondary:   #161616;
  --text:           #eeeeee;
  --text-muted:     #888888;
  --border:         #2a2a2a;
  --tag-bg:         #1e1e1e;
  --tag-text:       #999999;
  --nav-bg:         rgba(17, 17, 17, 0.96);
  --link:           #eeeeee;
  --link-hover:     #c9a96e;
  --callout-bg:     #181818;
  --callout-border: #c9a96e;
  --placeholder-bg: #1e1e1e;

  /* Accent — warm amber. Change this one value to retheme. */
  --accent:         #c9a96e;
  --accent-dim:     rgba(201, 169, 110, 0.12);
}


/* === RESET & BASE ===
   Minimal reset — box-sizing, margins, smooth scroll.
*/
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  /* Offset anchor links so fixed nav doesn't cover headings */
  scroll-padding-top: 80px;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--link-hover);
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.4rem;
}


/* === LAYOUT CONTAINER ===
   Centered wrapper for all page content.
*/
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Narrower container for long-form reading (case studies) */
.container--narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 2rem;
}


/* === NAV STYLES ===
   Fixed navigation bar at the top.
   Logo on left, links + toggle on right.
*/
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  height: 60px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.nav-name {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--text);
}

.nav-name:hover {
  color: var(--text-muted);
}

/* Case study nav: name only, left-aligned */
.nav-inner--cs {
  justify-content: flex-start;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

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



/* === HERO SECTION ===
   Two-column layout: text left, photo right.
   Stacks vertically on mobile.
*/
.hero {
  padding-top: 96px; /* offset for fixed nav */
  padding-bottom: 56px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.hero-text .tagline {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1.5rem;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.hero-text .bio {
  font-size: 0.975rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 1rem;
  line-height: 1.75;
}

.hero-text .bio-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
  max-width: 560px;
}

.hero-text .bio-list li {
  font-size: 0.975rem;
  color: var(--text-muted);
  line-height: 1.75;
  padding-left: 1rem;
  position: relative;
}

.hero-text .bio-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* Inline links in bio stay gray but get an underline */
.hero-text .bio a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hero-text .bio a:hover {
  color: var(--accent);
}

/* Add spacing only after the last bio paragraph before the links */
.hero-text .bio:last-of-type {
  margin-bottom: 1.75rem;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.hero-links a {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.hero-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hero-photo {
  width: 240px;
  flex-shrink: 0;
}

.hero-photo img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}


/* === RESULTS SECTION ===
   Four prominent numbers across the full width.
   A short context line sits above the grid.
*/
.results {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 44px 0;
  transition: background-color 0.2s ease;
}

/* Short intro line above the numbers */
.results-context {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem 0.5rem;
}

.result-number {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent);
}

.result-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.4;
}


/* === WORK / CASE STUDY CARDS ===
   Vertical list of case study cards.
   Each card links to its own page.
*/
.work {
  padding: 56px 0;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.cards {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

/* Each card is a full-width <a> link */
.card {
  display: block;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  border-left: 2px solid transparent;
  padding-left: 0;
  transition: border-color 0.2s ease, padding-left 0.2s ease;
}

.card:hover {
  color: var(--text);
  border-left-color: var(--accent);
  padding-left: 1rem;
}

.card:hover .card-title {
  color: var(--text);
}

.card:hover .card-number {
  color: var(--accent);
}

.card-number {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  transition: color 0.2s ease;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 0.6rem;
  transition: color 0.15s ease;
  max-width: 640px;
}

.card-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  max-width: 580px;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.775rem;
  font-weight: 500;
  background-color: var(--accent-dim);
  color: var(--accent);
  padding: 0.25rem 0.65rem;
  border-radius: 3px;
  letter-spacing: 0.01em;
  border: 1px solid rgba(201, 169, 110, 0.2);
}


/* === CONTACT SECTION ===
   Simple centered contact block.
*/
.contact {
  padding: 56px 0;
  border-top: 1px solid var(--border);
  background-color: var(--bg-secondary);
  transition: background-color 0.2s ease;
}

.contact h2 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.contact p {
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 1.75rem;
  font-size: 0.975rem;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.contact-links a {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.contact-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}


/* === FOOTER ===
   Three-column footer: name, links, copyright.
*/
.footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

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


/* ============================================================
   CASE STUDY PAGE STYLES
   Used by all three case study pages.
============================================================ */

/* === CASE STUDY LAYOUT ===
   Wraps the entire case study page below the nav.
*/
.case-study-page {
  padding-top: 40px;
  padding-bottom: 80px;
}


/* === BACK LINK ===
   ← Back to work link at the top of each case study.
*/
.back-link {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 2.5rem;
  margin-top: 2rem;
  transition: color 0.15s ease;
}

.back-link:hover {
  color: var(--accent);
}


/* === CASE STUDY HEADER ===
   Number/type label, title, and meta bar.
*/
.cs-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.cs-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  max-width: 640px;
}

.cs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.cs-meta-item {
  display: flex;
  gap: 0.4rem;
}

.cs-meta-label {
  font-weight: 600;
  color: var(--text);
}


/* === CASE STUDY BODY ===
   Long-form readable content styles.
*/
.cs-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

.cs-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.cs-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.6rem;
}

.cs-body p {
  margin-bottom: 1.25rem;
  color: var(--text);
}

.cs-body ul,
.cs-body ol {
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}

.cs-body ul li,
.cs-body ol li {
  margin-bottom: 0.4rem;
}

.cs-body strong {
  font-weight: 600;
  color: var(--text);
}

.cs-body figure {
  margin: 1.5rem auto;
  width: fit-content;
  max-width: 100%;
}

.cs-body figure .cs-image {
  margin: 0;
}

.cs-body figcaption {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.6rem;
  line-height: 1.5;
}

.cs-body a {
  color: var(--text);
}

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


/* === METRICS CALLOUT BLOCK ===
   Highlighted block for the results / numbers section.
   The heading sits above the card, not inside it.
*/

/* h2 heading above the overview card — matches body h2 style */
.metrics-heading {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.metrics-callout {
  background-color: var(--callout-bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  padding: 1.5rem 1.75rem;
  margin: 2.5rem 0;
}

.metrics-callout h3 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.metrics-callout ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.metrics-callout ul li {
  font-size: 0.975rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.metrics-callout ul li:last-child {
  border-bottom: none;
}

.metrics-callout .metric-number {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  color: var(--accent);
}

.metrics-callout .metric-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}


/* === CASE STUDY IMAGES ===
   Full-width images embedded in case study body.
*/
.cs-image {
  max-width: 100%;
  max-height: 520px;
  width: auto;
  height: auto;
  border-radius: 6px;
  margin: 1.5rem auto;
  display: block;
  filter: brightness(0.85);
}

.cs-slideshow {
  margin: 1.5rem auto;
  border-radius: 6px;
  overflow: hidden;
  max-width: 100%;
}

.cs-slide {
  display: none;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
  border-radius: 0;
  margin: 0;
  filter: brightness(0.85);
}

.cs-slide.active {
  display: block;
}

.cs-slideshow-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 0.65rem 1rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.cs-slide-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.2rem 0.7rem;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.6;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.cs-slide-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.cs-slide-counter {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-width: 2.5rem;
  text-align: center;
}


/* === INLINE CHARTS ===
   SVG data charts embedded directly in case study pages.
*/
.cs-body figure.cs-chart {
  width: 100%;
  margin: 2rem 0;
}

.cs-chart svg {
  max-width: 100%;
  height: auto;
  display: block;
}

.cs-chart figcaption {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.6rem;
}



/* === CASE STUDY BOTTOM NAV ===
   Previous / next navigation between case studies.
*/
.cs-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2.5rem;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 1rem;
}

.cs-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.cs-nav-prev::before {
  content: "← ";
}

.cs-nav-next::after {
  content: " →";
}


/* ============================================================
   RESPONSIVE — MOBILE STYLES
   Breakpoint at 680px — phones and small tablets.
============================================================ */
@media (max-width: 680px) {

  /* Tighter side padding on mobile so content isn't cramped */
  .container,
  .container--narrow {
    padding: 0 1.25rem;
  }

  /* Nav */
  .nav-inner {
    padding: 0 1.25rem;
  }

  .nav-links {
    gap: 1.25rem;
  }

  .nav-links a {
    font-size: 0.875rem;
    /* Ensure tap targets are large enough */
    padding: 0.25rem 0;
  }

  /* Hero stacks: photo above text */
  .hero {
    padding-top: 76px;
    padding-bottom: 40px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .hero-photo {
    order: -1;
    width: 120px;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }

  .hero-text .tagline {
    font-size: 1rem;
  }

  .hero-text .bio {
    font-size: 0.925rem;
  }

  /* Results: 2×2 grid */
  .results {
    padding: 36px 0;
  }

  .results-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }

  .result-item {
    padding: 1.25rem 0.75rem;
    border-bottom: 1px solid var(--border);
  }

  .result-item:nth-child(3),
  .result-item:nth-child(4) {
    border-bottom: none;
  }

  .result-item:nth-child(odd) {
    border-right: 1px solid var(--border);
  }

  .result-number {
    font-size: 2rem;
  }

  .results-context {
    font-size: 0.8rem;
  }

  /* Work cards */
  .work {
    padding: 40px 0;
  }

  .card {
    /* Disable slide animation on touch — no hover state */
    transition: none;
  }

  .card-title {
    font-size: 1.05rem;
  }

  /* Contact */
  .contact {
    padding: 40px 0;
  }

  .contact h2 {
    font-size: 1.4rem;
  }

  .contact-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  /* Contact links: bigger tap targets on mobile */
  .contact-links a {
    padding: 0.25rem 0;
  }

  /* Footer */
  .footer-inner {
    justify-content: center;
  }

  /* Case study page — no fixed nav, so less top padding */
  .case-study-page {
    padding-top: 28px;
    padding-bottom: 56px;
  }

  .cs-title {
    font-size: 1.45rem;
  }

  .cs-eyebrow {
    font-size: 0.72rem;
  }

  .cs-meta {
    gap: 0.5rem 1rem;
    margin-bottom: 2rem;
  }

  .cs-body {
    font-size: 0.95rem;
  }

  .cs-body h2 {
    font-size: 1.15rem;
    margin-top: 2rem;
  }


  .metrics-callout {
    padding: 1.25rem 1.25rem;
  }

  .metrics-callout .metric-number {
    font-size: 1.1rem;
  }

  /* Bottom nav stacks vertically */
  .cs-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  /* Bigger tap targets on nav links */
  .cs-nav a {
    padding: 0.25rem 0;
  }
}