/* ==========================================================================
   Carlo Wolff — Executive Communication Coaching
   Clean, Lightweight, High-Performance Static Stylesheet
   ========================================================================== */

:root {
  /* Brand Colors */
  --color-primary: #546E7A;
  --color-primary-hover: #37474F;
  --color-primary-light: rgba(225, 247, 250, 0.9);
  --color-dark: #0d141a;
  --color-slate: #263238;
  --color-slate-light: #37474F;
  --color-bg-light: #ffffff;
  --color-bg-subtle: #f8fafc;
  --color-text-main: #0d141a;
  --color-text-muted: #546E7A;
  --color-text-light: #ffffff;
  --color-text-light-muted: #b8c0cc;
  --color-border: #e2e8f0;
  --color-border-dark: rgba(255, 255, 255, 0.15);
  
  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;
  --header-height: 76px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-pill: 9999px;
  
  /* Transitions & Shadows */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-main);
  background-color: var(--color-bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button, input, textarea {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: inherit;
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}

h4 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

h5 {
  font-size: 1.15rem;
}

h6 {
  font-size: 1rem;
}

p {
  font-size: 1.05rem;
  line-height: 1.7;
}

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

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

.text-light-muted {
  color: var(--color-text-light-muted);
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}

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

.brand-logo {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-dark);
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-dark);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
  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-fast);
}

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

.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--border-radius-pill);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.header-cta:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  cursor: pointer;
  padding: 0.5rem;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 1100;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.burger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-nav-toggle[aria-expanded="true"] .burger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .burger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .burger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: #ffffff;
  padding: 2.5rem 1.5rem;
  z-index: 999;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

.mobile-drawer .nav-link {
  font-size: 1.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-drawer .header-cta {
  width: 100%;
  justify-content: center;
  padding: 0.9rem;
  font-size: 1.05rem;
  margin-top: 1rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(84, 110, 122, 0.35);
}

.btn-outline-light {
  background-color: rgba(184, 192, 204, 0.22);
  color: #ffffff;
  border: 1px solid #ffffff;
  backdrop-filter: blur(4px);
}

.btn-outline-light:hover {
  background-color: rgba(225, 247, 250, 0.64);
  color: #ffffff;
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--color-primary-light);
  color: var(--color-dark);
  border: 1px solid #ffffff;
  font-weight: 600;
}

.btn-accent:hover {
  background-color: var(--color-dark);
  color: #ffffff;
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 1rem 2.4rem;
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  background-color: var(--color-dark);
  color: var(--color-text-light);
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(3.5rem, 6vw, 5.5rem);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(13, 20, 26, 0.72);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 880px;
  margin: 0 auto;
}

.hero-title {
  margin-bottom: 1.25rem;
  color: #ffffff;
}

.hero-subtitle {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  color: var(--color-text-light-muted);
  margin-bottom: 2.25rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: center;
  margin-bottom: 3.5rem;
}

/* Hero Pillars Grid (Homepage) */
.hero-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.pillar-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--border-radius-lg);
  padding: 2rem 1.5rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  text-align: left;
}

.pillar-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
}

.pillar-card h3 {
  font-size: 1.3rem;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.pillar-card p {
  font-size: 0.95rem;
  color: var(--color-text-light-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.pillar-card .btn {
  width: 100%;
}

/* ==========================================================================
   Content Sections
   ========================================================================== */
.section {
  padding: clamp(3.5rem, 6vw, 5.5rem) 0;
}

.section-alt {
  background-color: var(--color-bg-subtle);
}

.section-dark {
  background-color: var(--color-slate);
  color: var(--color-text-light);
}

.section-header {
  margin-bottom: clamp(2.5rem, 4vw, 3.5rem);
}

.section-title {
  margin-bottom: 1rem;
}

.section-description {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.15rem;
  color: var(--color-text-muted);
}

.section-dark .section-description {
  color: var(--color-text-light-muted);
}

/* Two-Column Grid (Text + Image) */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.grid-2col.reverse {
  direction: rtl;
}

.grid-2col.reverse > * {
  direction: ltr;
}

/* Cards Grid */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
}

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

.card-img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: #e2e8f0;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.card:hover .card-img {
  transform: scale(1.04);
}

.card-body {
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-dark);
}

.card-text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 4-Step Process Section */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-top: 2.5rem;
}

.step-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 2rem;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.step-number {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: block;
}

.step-title {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--color-dark);
}

.step-text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Feature Checklist / Points */
.checklist {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.75rem 0;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.checklist-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 2px;
}

.checklist-text {
  font-size: 1.05rem;
  color: inherit;
}

.checklist-text strong {
  color: var(--color-dark);
}

.section-dark .checklist-text strong {
  color: #ffffff;
}

/* Media Showcase */
.media-frame {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* About Section Specifics */
.about-image-wrapper {
  position: relative;
  text-align: center;
}

.about-photo {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  aspect-ratio: 4 / 3.4;
  object-fit: cover;
}

.badge-languages {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.lang-pill {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.85rem;
  border-radius: var(--border-radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-slate);
}

/* ==========================================================================
   Forms & Contact
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: flex-start;
}

.contact-card {
  background-color: #ffffff;
  border-radius: var(--border-radius-lg);
  padding: clamp(2rem, 4vw, 2.75rem);
  box-shadow: var(--shadow-lg);
  color: var(--color-dark);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background-color: #ffffff;
  color: var(--color-dark);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(84, 110, 122, 0.15);
}

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

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.1rem;
}

.contact-info-item a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

/* Form status messages */
.form-status {
  display: none;
  padding: 0.85rem 1rem;
  border-radius: var(--border-radius-sm);
  margin-top: 1rem;
  font-size: 0.95rem;
}

.form-status.success {
  display: block;
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-status.error {
  display: block;
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #17222c;
  color: var(--color-text-light-muted);
  padding: clamp(3.5rem, 5vw, 5rem) 0 2rem;
  border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--color-text-light-muted);
  font-size: 0.95rem;
}

.footer-link:hover {
  color: #ffffff;
  padding-left: 4px;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.newsletter-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: #ffffff;
  border-radius: 10px;
  color: var(--color-dark);
}

.newsletter-btn {
  padding: 0.75rem 1.5rem;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: var(--border-radius-pill);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

/* ==========================================================================
   Static Legal & Markdown Pages
   ========================================================================== */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem var(--container-padding);
}

.legal-content h1 {
  margin-bottom: 2rem;
  color: var(--color-dark);
}

.legal-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: var(--color-dark);
}

.legal-content p, .legal-content ul {
  margin-bottom: 1.25rem;
  color: #374151;
  font-size: 1.05rem;
  line-height: 1.75;
}

.legal-content ul {
  padding-left: 1.5rem;
  list-style: disc;
}

.legal-content a {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-pillars-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
  
  .cards-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .desktop-nav,
  .site-header .header-cta {
    display: none;
  }

  .mobile-nav-toggle,
  .mobile-drawer {
    display: flex;
  }

  .hero-pillars-grid {
    grid-template-columns: 1fr;
  }

  .grid-2col {
    grid-template-columns: 1fr;
  }

  .grid-2col.reverse {
    direction: ltr;
  }

  .cards-grid-3 {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-legal-links {
    justify-content: center;
  }
}