/* ============================================
   MAIN STYLESHEET
   Leading from Within - Executive Coaching

   Table of Contents:
   1. CSS Reset & Base Styles
   2. Typography
   3. Layout & Container
   4. Header & Navigation
   5. Hero Section
   6. About Section
   7. Services Section
   8. Contact Section
   9. Footer
   10. Utility Classes
   11. Animations
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Merriweather:wght@300;400;700&display=swap');

/* ==================
   1. CSS RESET & BASE STYLES
   ================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* ==================
   2. TYPOGRAPHY
   ================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-800);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-3xl);
  letter-spacing: var(--letter-spacing-tight);
}

h2 {
  font-size: var(--font-size-2xl);
  letter-spacing: var(--letter-spacing-tight);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

h5 {
  font-size: var(--font-size-md);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

strong, b {
  font-weight: var(--font-weight-semibold);
}

em, i {
  font-style: italic;
}

/* ==================
   3. LAYOUT & CONTAINER
   ================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding-left: var(--section-padding-x);
  padding-right: var(--section-padding-x);
}

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

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

section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
}

/* ==================
   4. HEADER & NAVIGATION
   ================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  z-index: var(--z-index-sticky);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.header--shrink {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.75rem var(--section-padding-x);
  max-width: var(--container-max-width);
  margin: 0 auto;
  transition: padding 0.3s ease;
}

.header--shrink .header__container {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.header__logo {
  font-family: var(--font-secondary);
  font-size: 1.75rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: var(--letter-spacing-tight);
  transition: font-size 0.3s ease, color 0.2s ease;
}

.header--shrink .header__logo {
  font-size: 1.375rem;
}

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

/* Navigation */
.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  align-items: center;
}

.nav__link {
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  padding: var(--spacing-sm) 0;
  position: relative;
  transition: color 0.2s ease, font-size 0.3s ease;
}

.header--shrink .nav__link {
  font-size: 0.875rem;
}

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

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

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

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav__toggle-line {
  width: 25px;
  height: 3px;
  background-color: var(--color-gray-700);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-speed-normal) var(--transition-ease);
}

.nav__toggle--active .nav__toggle-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav__toggle--active .nav__toggle-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ==================
   5. HERO SECTION
   ================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding-top: 80px; /* Account for fixed header */
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/hero/hero-background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.15;
  z-index: 0;
}

.hero__container {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
}

.hero__title {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.hero__cta {
  display: inline-flex;
  gap: var(--spacing-md);
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  animation: fadeIn 0.8s ease-out 1s forwards, bounce 2s ease-in-out 1.5s infinite;
}

.hero__scroll-icon {
  width: 30px;
  height: 50px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 20px;
  position: relative;
}

.hero__scroll-dot {
  width: 6px;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollDown 2s ease-in-out infinite;
}

/* ==================
   6. ABOUT SECTION
   ================== */

.about {
  background-color: var(--color-bg-primary);
}

.about__container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.about__image-wrapper {
  position: relative;
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s ease-out;
}

.about__image-wrapper.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.about__image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  display: block;
}

.about__image-placeholder {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.about__content {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease-out 0.2s;
}

.about__content.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.about__subtitle {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--spacing-sm);
}

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

.about__text {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.about__credentials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

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

.about__credential-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

/* ==================
   7. SERVICES SECTION
   ================== */

.services {
  background-color: var(--color-bg-secondary);
}

.services__header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.services__subtitle {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--spacing-sm);
}

.services__title {
  margin-bottom: var(--spacing-md);
}

.services__description {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.service-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-speed-normal) var(--transition-ease);
  opacity: 0;
  transform: translateY(30px);
}

.service-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
  font-size: var(--font-size-xl);
}

.service-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-800);
}

.service-card__description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.service-card__features {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.service-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.service-card__feature::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

/* ==================
   8. CONTACT SECTION
   ================== */

.contact {
  background-color: var(--color-bg-primary);
}

.contact__container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-4xl);
}

.contact__info {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s ease-out;
}

.contact__info.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.contact__subtitle {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--spacing-sm);
}

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

.contact__text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
}

.contact__details {
  margin-bottom: var(--spacing-2xl);
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact__detail-icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact__detail-content {
  flex: 1;
}

.contact__detail-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--spacing-xs);
}

.contact__detail-value {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
}

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

.contact__social-link {
  width: 40px;
  height: 40px;
  background-color: var(--color-light-gray);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  transition: all var(--transition-speed-normal);
}

.contact__social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-3px);
}

/* Contact Form */
.contact__form-wrapper {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease-out 0.2s;
}

.contact__form-wrapper.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.contact-form {
  background-color: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

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

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-sm);
}

.form-label--required::after {
  content: '*';
  color: var(--color-error);
  margin-left: var(--spacing-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-speed-normal);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-white);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  display: none;
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

.form-group--error .form-input,
.form-group--error .form-textarea {
  border-color: var(--color-error);
}

.form-group--error .form-error {
  display: block;
}

.form-success {
  display: none;
  background-color: rgba(90, 154, 124, 0.1);
  border: 2px solid var(--color-success);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  color: var(--color-success);
  font-size: var(--font-size-sm);
}

.form-success--visible {
  display: block;
}

/* ==================
   9. FOOTER
   ================== */

.footer {
  background-color: var(--color-gray-800);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__brand {
  font-family: var(--font-secondary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__description {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray-400);
}

.footer__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__links {
  list-style: none;
}

.footer__link {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-speed-normal);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-gray-700);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer__copyright {
  color: var(--color-gray-500);
}

.footer__legal {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__legal-link {
  color: var(--color-gray-500);
  transition: color var(--transition-speed-normal);
}

.footer__legal-link:hover {
  color: var(--color-white);
}

/* ==================
   10. UTILITY CLASSES
   ================== */

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-speed-normal) var(--transition-ease);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

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

.btn--primary:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

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

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-md);
}

.btn:disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
}

/* Text Utilities */
.text-center {
  text-align: center;
}

.text-primary {
  color: var(--color-primary);
}

.text-secondary {
  color: var(--color-text-secondary);
}

/* Spacing Utilities */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* Visibility */
.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ==================
   11. ANIMATIONS
   ================== */

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

@keyframes scrollDown {
  0% {
    top: 10px;
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  100% {
    top: 30px;
    opacity: 0;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}