/* ============================================
   Nistha Kaushal — Portfolio Styles
   Editorial, bold. Blue/indigo + yellow highlights.
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #F5F2EE;
  --color-bg-alt: #EDEAF8;
  --color-bg-card: #FFFFFF;
  --color-text: #1A1A1A;
  --color-text-secondary: #555555;
  --color-accent: #2A00D5;
  --color-accent-light: #4D2DE8;
  --color-accent-subtle: rgba(42, 0, 213, 0.07);
  --color-highlight: #FFE44D;
  --color-border: rgba(26, 26, 26, 0.1);
  --color-border-hover: rgba(26, 26, 26, 0.2);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-script: 'Caveat', cursive;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.7s;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

/* --- Dark Mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #141218;
    --color-bg-alt: #1E1A2E;
    --color-bg-card: #1C1924;
    --color-text: #F0EDE8;
    --color-text-secondary: #A09BAA;
    --color-accent: #7B6BFF;
    --color-accent-light: #9B8FFF;
    --color-accent-subtle: rgba(123, 107, 255, 0.12);
    --color-highlight: #FFE44D;
    --color-border: rgba(240, 237, 232, 0.1);
    --color-border-hover: rgba(240, 237, 232, 0.2);
  }
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

::selection {
  background: var(--color-highlight);
  color: var(--color-text);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

.section-label {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-accent);
  display: inline-block;
  margin-bottom: var(--space-sm);
  background: linear-gradient(to top, var(--color-highlight) 35%, transparent 35%);
  padding: 0 0.2em;
}

.highlight {
  color: var(--color-accent);
  font-style: normal;
  background: linear-gradient(to top, var(--color-highlight) 35%, transparent 35%);
  padding: 0 0.15em;
}

.script {
  font-family: var(--font-script);
  font-size: 1.3em;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: transparent;
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(42, 0, 213, 0.25);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-hover);
}

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

.btn--large {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(245, 242, 238, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  transition: all var(--duration-normal) var(--ease-out);
  border-bottom: 1px solid transparent;
}

@media (prefers-color-scheme: dark) {
  .nav {
    background: rgba(20, 18, 24, 0.85);
  }
}

.nav--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.05);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav__logo:hover {
  transform: scale(1.05);
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav__links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__links a:hover {
  color: var(--color-text);
}

.nav__links a:hover::after {
  width: 100%;
}

/* Mobile Nav Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent-subtle) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatBlob 15s ease-in-out infinite;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-30px, 20px) scale(1.05); }
  66% { transform: translate(20px, -15px) scale(0.95); }
}

.hero__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-xl);
  align-items: center;
  width: 100%;
}

.hero__greeting {
  font-family: var(--font-script);
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.hero__name {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  color: var(--color-accent);
  background: linear-gradient(to top, var(--color-highlight) 25%, transparent 25%);
  display: inline;
  padding: 0 0.1em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.hero__tagline {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.hero__tagline .highlight {
  font-style: italic;
}

.hero__subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  max-width: 500px;
}

.hero__cta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Hero Image */
.hero__image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image-frame {
  width: 340px;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 3px solid var(--color-accent);
  background: var(--color-bg-alt);
  transform: rotate(2deg);
  transition: transform var(--duration-slow) var(--ease-out);
  box-shadow: 0 20px 60px rgba(42, 0, 213, 0.12);
}

.hero__image-frame:hover {
  transform: rotate(0deg);
}

.hero__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.hero__image-placeholder svg {
  opacity: 0.3;
}

.hero__image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero__image-doodle {
  position: absolute;
  font-size: 2rem;
  color: var(--color-accent);
  animation: sparkle 3s ease-in-out infinite;
  pointer-events: none;
}

.hero__image-doodle:not(.hero__image-doodle--2) {
  top: -18px;
  right: -18px;
}

.hero__image-doodle--2 {
  bottom: 20px;
  left: -10px;
  font-family: var(--font-script);
  font-size: 3rem;
  animation-delay: 1.5s;
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: scale(1) rotate(0deg); }
  50% { opacity: 0.6; transform: scale(1.2) rotate(10deg); }
}

/* Scroll Indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__scroll-arrow {
  animation: bounceDown 2s ease-in-out infinite;
  font-size: 1.2rem;
}

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ============================================
   ABOUT
   ============================================ */
.about {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-alt);
  position: relative;
}

.about__grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-xl);
}

.about__heading {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

.about__text {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  max-width: 600px;
  line-height: 1.8;
}

.about__skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: var(--space-lg);
}

.skill-tag {
  padding: 0.45rem 1.1rem;
  background: var(--color-bg-alt);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid transparent;
}

.skill-tag:hover {
  background: var(--color-highlight);
  color: var(--color-text);
  transform: translateY(-2px);
}

/* ============================================
   WORK / CASE STUDIES
   ============================================ */
.work {
  padding: var(--space-3xl) 0;
}

.work__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.work__title {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

/* Case Study Card */
.case-study {
  margin-bottom: var(--space-3xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--duration-slow) var(--ease-out);
}

.case-study:hover {
  border-color: var(--color-accent);
  box-shadow: 0 20px 60px rgba(42, 0, 213, 0.08);
}

.case-study__hero {
  position: relative;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.case-study__number {
  position: absolute;
  top: var(--space-md);
  left: var(--space-lg);
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.25;
  line-height: 1;
  z-index: 2;
  pointer-events: none;
}

/* --- Card variant (landing page case studies) --- */
.case-study--card {
  padding: var(--space-xl);
}

.case-study__card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.case-study__card-header .case-study__meta {
  padding-top: 1.1rem;
}

.case-study__card-number {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 6rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 0.85;
  flex-shrink: 0;
}

.case-study--card .case-study__title {
  margin-bottom: var(--space-md);
}

.case-study--card .case-study__section {
  margin-bottom: var(--space-md);
}

.case-study--card .cs-cta {
  display: inline-block;
  margin-top: var(--space-md);
}

/* View case study CTA */
.cs-cta {
  margin-top: var(--space-sm);
}

.case-study__image-placeholder {
  width: 100%;
  border-radius: 0;
  overflow: hidden;
}

.case-study__image-placeholder img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  background: var(--color-bg-alt);
  padding: var(--space-xl) var(--space-xl) var(--space-md);
}

/* Per-case-study hero backgrounds */
.case-study:nth-child(1) .case-study__hero {
  background: #EDEAF8;
}

.case-study:nth-child(2) .case-study__hero {
  background: #F0EDE8;
}

.case-study:nth-child(3) .case-study__hero {
  background: #1a1a2e;
}

@media (prefers-color-scheme: dark) {
  .case-study:nth-child(1) .case-study__hero {
    background: #1E1A2E;
  }

  .case-study:nth-child(2) .case-study__hero {
    background: #1C1924;
  }

  .case-study:nth-child(3) .case-study__hero {
    background: #1a1a2e;
  }
}

.case-study__content {
  padding: var(--space-xl);
}

.case-study__meta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.case-study__meta span {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding: 0.25rem 0.75rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
}

.case-study__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: var(--space-lg);
}

.case-study__section {
  margin-bottom: var(--space-lg);
}

.case-study__section h4 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.case-study__section p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}

.case-study__section ul {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  padding-left: 1.5rem;
  margin-top: 0.5rem;
}

.case-study__section ul li {
  margin-bottom: 0.4rem;
}

/* Process Steps */
.case-study__process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.process-step {
  text-align: center;
  padding: var(--space-md) var(--space-sm);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  transition: transform var(--duration-normal) var(--ease-out);
  position: relative;
}

.process-step:not(:last-child)::after {
  content: '\2192';
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  font-size: 1.2rem;
  z-index: 1;
}

.process-step:hover {
  transform: translateY(-4px);
}

.process-step__icon {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.process-step__label {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
  color: var(--color-text);
}

.process-step__desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Key Features */
.case-study__features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.feature-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  transition: transform var(--duration-normal) var(--ease-out);
}

.feature-item:hover {
  transform: translateX(4px);
}

.feature-item__num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.feature-item h5 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.feature-item p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Metrics */
.case-study__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.metric {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-accent-subtle);
  border-radius: var(--radius-md);
  border: 1px solid rgba(42, 0, 213, 0.15);
}

.metric__number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  display: inline;
}

.metric__suffix {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.metric__label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 0.3rem;
}

/* Info Cards (for problem/solution blocks) */
.case-study__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.info-card {
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-highlight);
}

.info-card h5 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.info-card p,
.info-card ul {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.info-card ul {
  padding-left: 1.2rem;
  margin-top: 0.3rem;
}

/* ============================================
   CASE STUDY DETAIL PAGES
   ============================================ */
.cs-detail__hero {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: 0;
  position: relative;
}

.cs-detail__hero--1 { background: #EDEAF8; }
.cs-detail__hero--2 { background: #F0EDE8; }
.cs-detail__hero--3 { background: #1a1a2e; }

@media (prefers-color-scheme: dark) {
  .cs-detail__hero--1 { background: #1E1A2E; }
  .cs-detail__hero--2 { background: #1C1924; }
}

.cs-detail__hero--3 .cs-detail__title,
.cs-detail__hero--3 .cs-detail__subtitle,
.cs-detail__hero--3 .cs-detail__number,
.cs-detail__hero--3 .cs-detail__back,
.cs-detail__hero--3 .case-study__meta span {
  color: #F5F0E8;
}

.cs-detail__hero--3 .cs-detail__subtitle {
  color: rgba(245, 240, 232, 0.65);
}

.cs-detail__hero--3 .cs-detail__back {
  color: rgba(245, 240, 232, 0.5);
}

.cs-detail__hero--3 .cs-detail__back:hover {
  color: var(--color-accent-light);
}

.cs-detail__hero--3 .case-study__meta span {
  background: rgba(245, 240, 232, 0.1);
  color: rgba(245, 240, 232, 0.7);
}

.cs-detail__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-lg);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.cs-detail__header {
  max-width: 750px;
}

.cs-detail__number {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: var(--space-sm);
  display: block;
}

.cs-detail__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.cs-detail__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 650px;
}

.cs-detail__hero .case-study__meta {
  margin-bottom: var(--space-md);
}

.cs-detail__hero-image {
  margin-top: var(--space-xl);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--space-md);
}

.cs-detail__hero-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* Case Study Image Showcases */
.cs-image-showcase {
  margin: var(--space-xl) 0;
}

.cs-image-showcase__label {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  text-align: center;
}

.cs-image-showcase__grid {
  display: grid;
  gap: var(--space-md);
}

.cs-image-showcase__grid--phones {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  justify-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.cs-image-showcase__grid--phones img {
  max-width: 260px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.cs-image-showcase__grid--wireframes {
  grid-template-columns: repeat(2, 1fr);
  max-width: 100%;
}

.cs-image-showcase__grid--wireframes img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: #fff;
}

.cs-image-showcase__single {
  text-align: center;
}

.cs-image-showcase__single img {
  max-width: 280px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  margin: 0 auto;
}

.cs-image-showcase__grid--desktop {
  grid-template-columns: 1fr 1fr;
  max-width: 100%;
}

.cs-image-showcase__grid--desktop img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.cs-image-showcase__grid--desktop-full {
  grid-template-columns: 1fr;
  max-width: 100%;
}

.cs-image-showcase__grid--desktop-full img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

@media (max-width: 640px) {
  .cs-image-showcase__grid--desktop {
    grid-template-columns: 1fr;
  }
}

.cs-image-showcase__caption {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: var(--space-sm);
  font-style: italic;
}

@media (max-width: 640px) {
  .cs-image-showcase__grid--phones {
    grid-template-columns: repeat(2, 1fr);
  }

  .cs-image-showcase__grid--phones img {
    max-width: 100%;
  }

  .cs-image-showcase__grid--wireframes {
    grid-template-columns: 1fr;
  }
}

.cs-detail__content {
  padding: var(--space-3xl) 0;
}

.cs-detail__content .container {
  max-width: 850px;
}

.cs-detail__content .case-study__section {
  margin-bottom: var(--space-2xl);
}

.cs-detail__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .cs-detail__hero {
    padding-top: calc(var(--nav-height) + var(--space-lg));
  }

  .cs-detail__hero-image {
    padding: 0;
  }

  .cs-detail__hero-image img {
    border-radius: 0;
  }

  .cs-detail__nav {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
}

/* ============================================
   RESUME
   ============================================ */
.resume {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-alt);
  text-align: center;
}

.resume__content {
  max-width: 500px;
  margin: 0 auto;
}

.resume__heading {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}

.resume__text {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: var(--space-3xl) 0;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact__heading {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  margin-bottom: var(--space-md);
}

.contact__text {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 280px;
}

.contact__social {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--color-border);
  transition: all var(--duration-normal) var(--ease-out);
}

.contact__social:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.contact__social svg {
  width: 20px;
  height: 20px;
}

/* Contact Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  padding: 0.85rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--duration-fast) var(--ease-out);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

/* ============================================
   PASSWORD MODAL
   ============================================ */
.pw-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  backdrop-filter: blur(4px);
}

.pw-overlay.visible {
  opacity: 1;
}

.pw-modal {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 420px;
  width: 90%;
  text-align: center;
  transform: translateY(20px);
  transition: transform var(--duration-normal) var(--ease-out);
}

.pw-overlay.visible .pw-modal {
  transform: translateY(0);
}

.pw-modal h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: var(--space-xs);
}

.pw-modal p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.pw-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  transition: border-color var(--duration-fast);
}

.pw-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.pw-error {
  color: #d32f2f;
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
}

.pw-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-md);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.footer__copyright {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  opacity: 0.7;
}

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

/* Initial states for scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero entrance animations */
.anim-fade-up {
  opacity: 0;
  transform: translateY(40px);
  animation: fadeUp 0.8s var(--ease-out) forwards;
}

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

.anim-delay-1 { animation-delay: 0.15s; }
.anim-delay-2 { animation-delay: 0.3s; }
.anim-delay-3 { animation-delay: 0.45s; }
.anim-delay-4 { animation-delay: 0.6s; }

/* Staggered reveal for child elements */
.reveal.visible .process-step,
.reveal.visible .metric,
.reveal.visible .skill-tag {
  animation: fadeUp 0.5s var(--ease-out) forwards;
  opacity: 0;
}

.reveal.visible .process-step:nth-child(1),
.reveal.visible .metric:nth-child(1),
.reveal.visible .skill-tag:nth-child(1) { animation-delay: 0.05s; }
.reveal.visible .process-step:nth-child(2),
.reveal.visible .metric:nth-child(2),
.reveal.visible .skill-tag:nth-child(2) { animation-delay: 0.1s; }
.reveal.visible .process-step:nth-child(3),
.reveal.visible .metric:nth-child(3),
.reveal.visible .skill-tag:nth-child(3) { animation-delay: 0.15s; }
.reveal.visible .process-step:nth-child(4),
.reveal.visible .metric:nth-child(4),
.reveal.visible .skill-tag:nth-child(4) { animation-delay: 0.2s; }
.reveal.visible .skill-tag:nth-child(5) { animation-delay: 0.25s; }
.reveal.visible .skill-tag:nth-child(6) { animation-delay: 0.3s; }
.reveal.visible .skill-tag:nth-child(7) { animation-delay: 0.35s; }
.reveal.visible .skill-tag:nth-child(8) { animation-delay: 0.4s; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  html {
    scroll-behavior: auto;
  }
}

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

/* Tablet */
@media (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-lg);
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__cta {
    justify-content: center;
  }

  .hero__image {
    order: -1;
  }

  .hero__image-frame {
    width: 260px;
    height: 300px;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .case-study__process {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-step:nth-child(2)::after {
    display: none;
  }

  .case-study__metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .case-study__cards {
    grid-template-columns: 1fr !important;
  }
}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --space-3xl: 5rem;
    --space-2xl: 3.5rem;
    --space-xl: 2.5rem;
  }

  /* Mobile Nav */
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 300px;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    padding: calc(var(--nav-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
    gap: var(--space-md);
    transition: right var(--duration-normal) var(--ease-out);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
    border-left: 1px solid var(--color-border);
  }

  .nav__links.active {
    right: 0;
  }

  .nav__links a {
    font-size: 1.1rem;
  }

  .hero__image-frame {
    width: 200px;
    height: 240px;
  }

  .hero__name {
    font-size: clamp(2.2rem, 10vw, 3.5rem);
  }

  .case-study__hero {
    flex-direction: column;
  }

  .case-study__number {
    top: var(--space-sm);
    left: var(--space-md);
  }

  .case-study__image-placeholder img {
    padding: var(--space-md) var(--space-sm) var(--space-xs);
  }

  .case-study__content {
    padding: var(--space-lg);
  }

  .case-study__process {
    grid-template-columns: 1fr 1fr;
  }

  .process-step::after {
    display: none;
  }

  .case-study__metrics {
    grid-template-columns: 1fr;
  }

  .hero__scroll-indicator {
    display: none;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}