/* KayBold Consulting - Corporate Design System */

:root {
  /* Colors - Navy/White corporate palette */
  --navy: #0a1628;
  --navy-light: #142240;
  --navy-dark: #050d18;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --accent: #2563eb;
  --accent-light: #3b82f6;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;

  /* Spacing */
  --container-max: 1200px;
  --container-narrow: 800px;
  --section-padding: 80px;
  --section-padding-mobile: 48px;
}

/* Selection color */
::selection {
  background: rgba(37, 99, 235, 0.15);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.3;
  color: var(--navy);
}

p {
  margin: 0 0 1em;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow 0.2s;
}

.header--scrolled {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.header__logo {
  height: 56px;
  width: auto;
}

.header__name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--navy);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-600);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: transparent;
  transition: color 0.15s, text-decoration-color 0.15s;
}

.header__link:hover,
.header__link--active {
  color: var(--navy);
  text-decoration-color: var(--gray-300);
}

.header__cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--navy);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 4px;
  transition: background 0.15s;
}

.header__cta:hover {
  background: var(--navy-light);
}

/* Mobile menu */
.header__menu-btn {
  display: none;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 5px 0;
  transition: 0.3s;
}

@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--gray-200);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
  }

  .header__nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .header__menu-btn {
    display: block;
  }
}

/* Hero Section */
.hero {
  padding: 140px 0 var(--section-padding);
  background: var(--navy);
  color: var(--white);
}

.hero__content {
  max-width: 720px;
}

.hero__tagline {
  font-size: 1rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--gray-300);
  margin-bottom: 16px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  color: var(--white);
  margin-bottom: 24px;
  line-height: 1.2;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--gray-300);
  line-height: 1.6;
  margin-bottom: 32px;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  background: var(--white);
  color: var(--navy);
  font-weight: 500;
  border-radius: 4px;
  transition: transform 0.15s, box-shadow 0.15s;
}

.hero__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Section */
.section {
  padding: var(--section-padding) 0;
}

.section--gray {
  background: var(--gray-50);
}

.section--navy {
  background: var(--navy);
  color: var(--white);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section__tagline {
  font-size: 1rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--accent);
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 16px;
}

.section__subtitle {
  font-size: 1.1rem;
  color: var(--gray-500);
}

.section__footnote {
  text-align: center;
  margin-top: 32px;
  font-size: 1rem;
  color: var(--gray-500);
  font-style: italic;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 32px;
  transition: background 0.2s, border-color 0.2s;
}

.card:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--accent);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.card__text {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.card__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: text-decoration-color 0.15s;
}

.card__link:hover {
  text-decoration-color: var(--accent);
}

/* Services List */
.services-list {
  display: flex;
  flex-direction: column;
}

.service-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--gray-200);
  text-decoration: none;
  transition: background 0.15s;
}

.service-item:first-child {
  border-top: 1px solid var(--gray-200);
}

.service-item:hover {
  background: var(--gray-50);
  margin: 0 -24px;
  padding-left: 24px;
  padding-right: 24px;
}

.service-item__number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 50%;
}

.service-item__content {
  flex: 1;
}

.service-item__title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}

.service-item__desc {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.service-item__meta {
  font-size: 0.85rem;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray-500);
}

/* About Section */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

@media (max-width: 768px) {
  .about {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.about__content h2 {
  font-size: 1.75rem;
  margin-bottom: 20px;
}

.about__content p {
  color: var(--gray-600);
  margin-bottom: 16px;
}

.about__list {
  margin: 24px 0;
}

.about__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--gray-700);
}

.about__list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 8px;
}

.about__services {
  color: var(--gray-500);
  font-size: 14px;
  margin: 20px 0;
  line-height: 1.7;
}

/* About Grid (side-by-side layout) */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-grid__left,
.about-grid__right {
  display: flex;
  flex-direction: column;
}

.about-grid__left h2,
.about-grid__right h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--navy);
}

.about-grid__left p,
.about-grid__right p {
  color: var(--gray-600);
  margin-bottom: 16px;
}

.about__credentials {
  font-size: 13px;
  color: var(--gray-400);
  letter-spacing: 0.02em;
  margin: 8px 0 20px;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

/* Insights/News Grid */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.insight-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  overflow: hidden;
  transition: background 0.2s, border-color 0.2s;
}

.insight-card:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.insight-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--gray-100);
}

.insight-card__content {
  padding: 24px;
}

.insight-card__meta {
  font-size: 0.85rem;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.insight-card__title {
  font-size: 1.15rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.insight-card__excerpt {
  font-size: 0.9rem;
  color: var(--gray-600);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Publications list */
.pub-list {
  display: flex;
  flex-direction: column;
}

.pub-item {
  display: block;
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-200);
  text-decoration: none;
  transition: background 0.15s;
}

.pub-item:first-child {
  border-top: 1px solid var(--gray-200);
}

.pub-item:hover {
  background: var(--gray-50);
  margin: 0 -24px;
  padding-left: 24px;
  padding-right: 24px;
}

.pub-item__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}

.pub-item__meta {
  font-size: 0.85rem;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.pub-item__desc {
  font-size: 0.95rem;
  color: var(--gray-600);
}

/* CTA Section */
.cta-section {
  text-align: center;
  padding: 80px 24px;
  background: var(--navy);
  color: var(--white);
}

.cta-section__title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--white);
  margin-bottom: 16px;
}

.cta-section__text {
  font-size: 1.1rem;
  color: var(--gray-300);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section__btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: var(--white);
  color: var(--navy);
  font-weight: 500;
  border-radius: 4px;
  transition: transform 0.15s, box-shadow 0.15s;
}

.cta-section__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Footer */
.footer {
  background: var(--gray-50);
  color: var(--gray-700);
  padding: 64px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer__brand img {
  height: 40px;
  width: auto;
}

.footer__brand-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--navy);
}

.footer__desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--gray-600);
}

.footer__col-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--navy);
  margin-bottom: 16px;
}

.footer__links li {
  margin-bottom: 10px;
}

.footer__links a {
  font-size: 0.9rem;
  color: var(--gray-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: transparent;
  transition: color 0.15s, text-decoration-color 0.15s;
}

.footer__links a:hover {
  color: var(--navy);
  text-decoration-color: var(--gray-400);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--gray-300);
  font-size: 0.85rem;
  color: var(--gray-500);
}

@media (max-width: 480px) {
  .footer__bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

.footer__social {
  display: flex;
  gap: 16px;
}

.footer__social a {
  color: var(--gray-500);
  transition: color 0.15s;
}

.footer__social a:hover {
  color: var(--navy);
}

/* Contact Page */
.contact-hero {
  padding: 140px 0 60px;
  background: var(--gray-50);
}

.contact-hero__title {
  font-size: clamp(2rem, 5vw, 2.5rem);
  margin-bottom: 16px;
}

.contact-hero__subtitle {
  font-size: 1.15rem;
  color: var(--gray-600);
  max-width: 600px;
}

.contact-content {
  padding: 64px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

.contact-info__title {
  font-size: 1.25rem;
  margin-bottom: 24px;
}

.contact-info__item {
  margin-bottom: 24px;
}

.contact-info__label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.contact-info__value {
  color: var(--navy);
}

.contact-info__value a {
  color: var(--accent);
  transition: color 0.15s;
}

.contact-info__value a:hover {
  text-decoration: underline;
}

/* Form Styles */
.form__group {
  margin-bottom: 20px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 480px) {
  .form__row {
    grid-template-columns: 1fr;
  }
}

.form__label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  background: var(--white);
  color: var(--navy);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form__textarea {
  min-height: 140px;
  resize: vertical;
}

.form__submit {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: var(--navy);
  color: var(--white);
  font-size: 1rem;
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s;
}

.form__submit:hover {
  background: var(--navy-light);
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form__status {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--gray-600);
}

.form__note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* About / Bio Section */
.bio-section {
  padding: 48px 0;
  border-bottom: 1px solid var(--gray-200);
}

.bio__name {
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.bio__text {
  color: var(--gray-600);
  margin-bottom: 16px;
}

.bio__links {
  display: flex;
  gap: 20px;
}

.bio__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
}

.bio__link:hover {
  text-decoration: underline;
}

/* Article Page */
.article-header {
  padding: 140px 0 48px;
  background: var(--gray-50);
}

.article-header__meta {
  font-size: 0.9rem;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray-500);
  margin-bottom: 16px;
}

.article-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  max-width: 800px;
}

.article-content {
  padding: 48px 0 80px;
}

.article-content .container--narrow {
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 48px 0 20px;
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin: 20px 0;
  padding-left: 24px;
  list-style: disc;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content blockquote {
  margin: 32px 0;
  padding: 24px 32px;
  background: var(--gray-50);
  border-left: 4px solid var(--accent);
  font-style: italic;
  color: var(--gray-600);
}

/* Article Share */
.article-share {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-200);
}

.article-share__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.article-share__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: #0077b5;
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 4px;
  transition: background 0.15s, transform 0.15s;
}

.article-share__btn:hover {
  background: #005e93;
  transform: translateY(-1px);
}

.article-share__btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Utility Classes */
/* Subtle link style (ekzhang-inspired) */
.link {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: color 0.15s, text-decoration-color 0.15s;
}

.link:hover {
  color: var(--navy);
  text-decoration-color: var(--navy);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

/* Draft posts - hidden until published */
.draft { display: none; }