/* ========================================
   Nammoku Solutions — Portfolio Styles
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #1a5fb4;
  --color-primary-light: #3a8fd4;
  --color-primary-dark: #0d3b7a;
  --color-accent: #4da6e8;
  --color-accent-light: #7ec4f0;
  --color-gradient-start: #4da6e8;
  --color-gradient-end: #0d3b7a;

  --color-text: #1a2332;
  --color-text-secondary: #4a5568;
  --color-text-light: #718096;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fc;
  --color-bg-dark: #0f1923;
  --color-border: #e2e8f0;

  --font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.25rem;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);

  --transition: 0.3s ease;
  --header-height: 72px;
}

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

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

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul {
  list-style: none;
}

/* --- Utility --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.required {
  color: #e53e3e;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  gap: 0.5rem;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-color: transparent;
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn--large {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-lg);
}

.btn--full {
  width: 100%;
}

/* ========================================
   Header / Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo-img {
  height: 40px;
  width: auto;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--color-primary-light);
  color: #fff !important;
}

.nav__link--lang {
  font-weight: 700;
  font-size: var(--font-size-xs);
  color: var(--color-primary) !important;
  border: 1.5px solid var(--color-primary);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.nav__link--lang::after {
  display: none;
}

.nav__link--lang:hover {
  background: var(--color-primary);
  color: #fff !important;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(77, 166, 232, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(26, 95, 180, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  z-index: -1;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
}

.hero__tagline {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
  padding: 0.35rem 0.85rem;
  background: rgba(26, 95, 180, 0.08);
  border-radius: var(--radius-sm);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-2xl);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-3xl);
}

.hero__card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-text);
  transform: translateX(0);
  transition: transform var(--transition), box-shadow var(--transition);
  min-width: 260px;
}

.hero__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.hero__card--1 { transform: translateX(-30px); }
.hero__card--2 { transform: translateX(30px); }
.hero__card--3 { transform: translateX(-10px); }

.hero__card-icon {
  font-size: 1.75rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(77, 166, 232, 0.15), rgba(26, 95, 180, 0.1));
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

/* ========================================
   Sections (shared)
   ======================================== */
.section {
  padding: var(--spacing-4xl) 0;
}

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

.section__label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.about {
  background: var(--color-bg-alt);
}

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

.about__story p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.about__stats {
  display: flex;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat__suffix {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-primary);
}

.stat__label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

.about__values {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.value-card {
  padding: var(--spacing-xl);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.value-card__icon {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
}

.value-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.value-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ========================================
   Services Section
   ======================================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.service-card {
  position: relative;
  padding: var(--spacing-2xl);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.service-card--featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  background: linear-gradient(180deg, rgba(26, 95, 180, 0.02), rgba(77, 166, 232, 0.04));
}

.service-card__badge {
  position: absolute;
  top: -12px;
  right: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.service-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

.service-card__icon svg {
  width: 100%;
  height: 100%;
}

.service-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

.service-card__desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.service-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.service-card__features li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding-left: 1.25rem;
  position: relative;
}

.service-card__features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

/* ========================================
   Case Studies Section
   ======================================== */
.case-studies {
  background: var(--color-bg-alt);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.cases__grid > :nth-child(4),
.cases__grid > :nth-child(5) {
  /* Center the last row of 2 cards under a 3-column grid */
}

@media (min-width: 1025px) {
  .cases__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .cases__grid > :last-child:nth-child(3n + 2) {
    grid-column: 2 / 3;
  }
}

.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.case-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
}

.case-card__tag {
  font-size: var(--font-size-xs);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.2);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.case-card__industry {
  font-size: var(--font-size-xs);
  opacity: 0.9;
}

.case-card__title {
  padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-md);
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.4;
}

.case-card__body {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
}

.case-card__section {
  margin-bottom: var(--spacing-lg);
}

.case-card__section:last-child {
  margin-bottom: 0;
}

.case-card__section h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.case-card__section p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.case-card__results {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.case-card__results li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding-left: 1rem;
  position: relative;
}

.case-card__results li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.case-card__results li strong {
  color: var(--color-primary);
}

/* ========================================
   Achievements Section
   ======================================== */
.achievements__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.achievement-card {
  padding: var(--spacing-2xl);
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.achievement-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-primary);
}

.achievement-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.achievement-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.achievement-list__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 95, 180, 0.1);
  color: var(--color-primary);
  border-radius: 50%;
  font-size: var(--font-size-xs);
  font-weight: 700;
}

/* Tech Stack */
.tech-group {
  margin-bottom: var(--spacing-lg);
}

.tech-group:last-child {
  margin-bottom: 0;
}

.tech-group h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tech-tag {
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* Industries */
.industries {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.industry {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.industry__icon {
  font-size: 1.25rem;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
}

.cta__content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta__content h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.cta__content p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-2xl);
}

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

.cta .btn--primary:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-dark);
}

/* ========================================
   Contact Section
   ======================================== */
.contact__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.contact-form {
  background: #fff;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 95, 180, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact-info__card {
  padding: var(--spacing-2xl);
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.contact-info__card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
}

.contact-info__card--accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border: none;
}

.contact-info__card--accent p {
  opacity: 0.9;
  line-height: 1.8;
}

.contact-info__item {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info__item:last-child {
  margin-bottom: 0;
}

.contact-info__icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info__item strong {
  display: block;
  font-size: var(--font-size-sm);
  margin-bottom: 2px;
}

.contact-info__item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.contact-info__item a {
  color: var(--color-primary);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
  height: 40px;
  margin-bottom: var(--spacing-md);
  filter: brightness(0) invert(1);
}

.footer__brand p {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  max-width: 300px;
}

.footer__links h4 {
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-lg);
}

.footer__links li {
  margin-bottom: var(--spacing-sm);
}

.footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .hero__visual {
    display: none;
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .services__grid,
  .cases__grid,
  .achievements__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about__grid {
    grid-template-columns: 1fr;
  }

  .contact__grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
    --spacing-4xl: 4rem;
  }

  .nav__list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .nav__list--open {
    transform: translateY(0);
  }

  .nav__toggle {
    display: flex;
  }

  .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);
  }

  .services__grid,
  .cases__grid,
  .achievements__grid {
    grid-template-columns: 1fr;
  }

  .about__stats {
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: flex-start;
  }

  .stat {
    text-align: left;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    text-align: center;
  }
}