/* 
  AI Leadership Manifesto - Design Tokens & Styles 
  Aesthetic: Premium, Executive, Consulting Firm (MIT / BCG / McKinsey vibe)
*/

:root {
  /* Colors */
  --color-primary: #0A192F;
  /* Deep Navy Space */
  --color-primary-light: #112240;
  --color-accent: #C5A880;
  /* Strategic Gold / Copper */
  --color-accent-hover: #D6BA92;
  --color-text-main: #2D3748;
  /* Dark Charcoal */
  --color-text-muted: #4A5568;
  --color-bg-light: #F8F9FA;
  --color-bg-white: #FFFFFF;
  --color-border: #E2E8F0;

  /* Typography */
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Inter', sans-serif;

  /* Layout */
  --container-width: 1140px;
  --section-padding: 80px 0;
  --border-radius: 8px;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  --box-shadow-elevated: 0 20px 40px rgba(10, 25, 47, 0.08);

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg-white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.font-serif {
  font-family: var(--font-serif);
}

p {
  margin-bottom: 1rem;
}

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

ul {
  list-style: none;
}

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

/* Utilities */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

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

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

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

.mt-2 {
  margin-top: 1rem;
}

.mt-3 {
  margin-top: 1.5rem;
}

.mt-4 {
  margin-top: 2rem;
}

.mt-5 {
  margin-top: 3rem;
}

.mb-4 {
  margin-bottom: 2rem;
}

.pb-4 {
  padding-bottom: 2rem;
}

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

.max-w-700 {
  max-width: 700px;
}

.max-w-800 {
  max-width: 800px;
}

.section-padding {
  padding: var(--section-padding);
}

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

.bg-dark,
.b-dark {
  background-color: var(--color-primary);
  color: var(--color-bg-white);
}

.bg-dark h1,
.bg-dark h2,
.bg-dark h3,
.b-dark h1,
.b-dark h2,
.b-dark h3 {
  color: var(--color-bg-white);
}

.text-white {
  color: var(--color-bg-white);
}

.text-light {
  color: #A0AEC0;
}

.gold-text {
  color: var(--color-accent) !important;
}

.fw-600 {
  font-weight: 600;
}

.lead {
  font-size: 1.25rem;
  font-weight: 300;
}

.small-title {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  font-weight: 600;
}

.bg-dark .small-title,
.b-dark .small-title {
  color: #A0AEC0;
}

.divider {
  height: 3px;
  width: 60px;
  background-color: var(--color-accent);
  margin-top: 1rem;
}

.divider.center {
  margin-left: auto;
  margin-right: auto;
}

.divider.left {
  margin-left: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  border: none;
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: var(--transition);
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(197, 168, 128, 0.3);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

.delay-4 {
  transition-delay: 0.4s;
}

.delay-5 {
  transition-delay: 0.5s;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(197, 168, 128, 0.4);
  }

  70% {
    box-shadow: 0 0 0 15px rgba(197, 168, 128, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(197, 168, 128, 0);
  }
}

.pulse-animation {
  animation: pulse 2s infinite;
}

/* Specific Blocks */
.watermark {
  font-family: monospace;
  font-size: 0.75rem;
  color: rgba(10, 25, 47, 0.2);
  letter-spacing: 2px;
}

.bg-dark .watermark,
.b-dark .watermark {
  color: rgba(255, 255, 255, 0.1);
}

/* Hero */
.hero {
  position: relative;
  padding: 100px 0 80px 0;
  overflow: hidden;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1.25rem;
  font-weight: 300;
  color: #A0AEC0;
  margin-bottom: 2rem;
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
}

.hero .description p {
  margin-bottom: 0.75rem;
  color: #CBD5E0;
}

.lead-form {
  background-color: var(--color-bg-white);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-elevated);
  color: var(--color-text-main);
  position: relative;
  z-index: 2;
}

.lead-form h3 {
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.lead-form .form-desc {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 25, 47, 0.1);
}

.lead-form .btn {
  width: 100%;
  margin-top: 0.5rem;
}

.privacy-note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 1rem;
  margin-bottom: 0;
}

.hero-bg-accent {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(197, 168, 128, 0.08) 0%, rgba(10, 25, 47, 0) 70%);
  z-index: 1;
  pointer-events: none;
}

.hero-bg-accent.flip {
  top: auto;
  bottom: -20%;
  left: -10%;
  right: auto;
}

/* Context & Stats */
.stats-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--color-bg-white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.stat-icon {
  color: var(--color-accent);
  font-size: 1.5rem;
  margin-top: 0.25rem;
}

.quote-card {
  background: var(--color-primary);
  color: white;
  padding: 3rem;
  border-radius: var(--border-radius);
  position: relative;
}

.quote-card h3 {
  color: var(--color-accent);
  font-size: 2.5rem;
  margin-top: 0.5rem;
}

/* Challenges */
.card {
  background: var(--color-bg-white);
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow);
  border-color: rgba(197, 168, 128, 0.3);
}

.card-icon {
  width: 50px;
  height: 50px;
  background: var(--color-bg-light);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.result-alert {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  background: #FEF2F2;
  border: 1px solid #FCA5A5;
  color: #991B1B;
  padding: 1rem 2rem;
  border-radius: 4px;
}

.challenge-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Evolution Timeline */
.waves-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.wave-item {
  display: flex;
  background: var(--color-primary-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  border-left: 4px solid #2D3748;
  transition: var(--transition);
}

.wave-item:hover,
.wave-item.active {
  border-left-color: var(--color-accent);
  transform: translateX(10px);
}

.wave-number {
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  font-size: 1.5rem;
  font-family: var(--font-serif);
  font-weight: bold;
  color: #A0AEC0;
  display: flex;
  align-items: center;
}

.wave-content {
  padding: 1.5rem;
  flex: 1;
}

.wave-content h3 {
  margin-bottom: 0.5rem;
}

.wave-content p {
  margin: 0;
  color: #CBD5E0;
}

.highlight-box {
  display: inline-block;
  padding: 1rem 2rem;
  border: 1px solid rgba(197, 168, 128, 0.5);
  border-radius: 40px;
}

/* Comparison Board */
.comparison-board {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
}

.comparison-header {
  background: var(--color-primary);
  color: white;
  padding: 1.5rem;
  text-align: center;
  font-weight: 600;
  letter-spacing: 1px;
}

.comparison-list li {
  display: flex;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.comparison-list li:last-child {
  border-bottom: none;
}

.old-way {
  flex: 1;
  text-align: right;
  color: var(--color-text-muted);
  font-weight: 500;
}

.new-way {
  flex: 1;
  text-align: left;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1.125rem;
}

.arrow {
  width: 60px;
  text-align: center;
  color: var(--color-accent);
}

/* Skills */
.skill-card {
  display: flex;
  gap: 1.5rem;
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.skill-card:hover {
  transform: translateY(-5px);
}

.skill-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.5;
}

.skill-content h3 {
  margin-bottom: 0.5rem;
}

.skill-content p {
  color: var(--color-text-muted);
  margin: 0;
}

/* Playbook Steps */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 700px;
  margin: 0 auto;
}

.step-card {
  display: flex;
  align-items: center;
  background: white;
  padding: 1rem;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
  transition: var(--transition);
}

.step-card:hover {
  border-color: var(--color-accent);
  transform: scale(1.02);
}

.step-label {
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.875rem;
  margin-right: 1.5rem;
}

.step-text {
  font-weight: 500;
}

/* Target & Author */
.target-list li {
  margin-bottom: 1rem;
  font-size: 1.125rem;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.target-img {
  width: 100%;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.author-card {
  display: flex;
  gap: 3rem;
  background: white;
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-elevated);
  max-width: 900px;
  margin: 0 auto;
}

.author-img {
  width: 250px;
  height: 300px;
  border-radius: var(--border-radius);
  flex-shrink: 0;
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.author-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.author-role {
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.expertise-list {
  list-style: disc;
  padding-left: 1.5rem;
  color: var(--color-text-muted);
}

.expertise-list li {
  margin-bottom: 0.5rem;
}

/* Next Step */
.next-step-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  position: relative;
}

.ns-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 4px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.875rem;
}

footer {
  padding: 2rem 0;
  background: #050d1a;
  color: #4A5568;
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .author-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .expertise-list {
    display: inline-block;
    text-align: left;
  }

  .hero {
    padding: 60px 0;
  }

  .comparison-list li {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }

  .old-way,
  .new-way {
    text-align: center;
  }

  .arrow {
    transform: rotate(90deg);
    margin: 0.5rem 0;
  }

  .step-card {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
    padding: 1.5rem;
  }

  .step-label {
    margin-right: 0;
  }
}