/* ==========================================================================
   Mediashock - Performance-Optimized CSS
   Design Direction: Editorial elegance meets technical precision
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Deep, sophisticated palette */
  --color-ink: #0a0a0b;
  --color-ink-light: #1a1a1d;
  --color-ink-muted: #2d2d32;
  --color-paper: #fafaf9;
  --color-paper-warm: #f5f4f0;
  --color-accent: #e85d04;
  --color-accent-light: #ff7b2e;
  --color-accent-subtle: rgba(232, 93, 4, 0.1);
  --color-muted: #6b6b6f;
  --color-border: rgba(10, 10, 11, 0.08);
  
  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 10rem;
  
  /* Layout */
  --container-max: 1200px;
  --container-narrow: 720px;
  
  /* Animation */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-paper);
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

address {
  font-style: normal;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
}

em {
  font-style: italic;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(250, 250, 249, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--duration-normal) var(--ease-out);
}

.nav--hidden {
  transform: translateY(-100%);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav__logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-display);
  font-size: 1.25rem;
  border-radius: 8px;
}

.nav__logo-text {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.125rem;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  transition: color var(--duration-fast);
}

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

.nav__link--cta {
  padding: 0.625rem 1.25rem;
  background: var(--color-ink);
  color: var(--color-paper) !important;
  border-radius: 6px;
  transition: background var(--duration-fast), transform var(--duration-fast);
}

.nav__link--cta:hover {
  background: var(--color-ink-light);
  transform: translateY(-1px);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
}

@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--duration-normal) var(--ease-out);
}

.nav__toggle.active span:first-child {
  transform: rotate(45deg) translate(3px, 5px);
}

.nav__toggle.active span:last-child {
  transform: rotate(-45deg) translate(3px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--color-paper);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 999;
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu__link {
  font-size: 1.25rem;
  font-weight: 500;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(80px + var(--space-2xl)) var(--space-md) var(--space-xl);
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__gradient {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 100%;
  background: radial-gradient(ellipse at center, var(--color-accent-subtle) 0%, transparent 70%);
  opacity: 0.6;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
  opacity: 0.5;
}

.hero__content {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) 0.1s forwards;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: var(--space-lg);
  max-width: 900px;
}

.hero__title-line {
  display: block;
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards;
}

.hero__title-line:nth-child(1) { animation-delay: 0.2s; }
.hero__title-line:nth-child(2) { animation-delay: 0.35s; }
.hero__title-line:nth-child(3) { animation-delay: 0.5s; }

.hero__highlight {
  color: var(--color-accent);
  position: relative;
}

.hero__highlight::after {
  content: '';
  position: absolute;
  bottom: 0.1em;
  left: 0;
  right: 0;
  height: 0.15em;
  background: var(--color-accent);
  opacity: 0.3;
  transform: scaleX(0);
  transform-origin: left;
  animation: scaleIn 0.6s var(--ease-out) 0.9s forwards;
}

.hero__subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 560px;
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) 0.65s forwards;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) 0.8s forwards;
}

.hero__proof {
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) 0.95s forwards;
}

.hero__clients {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.hero__clients-label {
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero__clients-logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.client-logo {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  padding: 0.5rem 1rem;
  background: var(--color-paper-warm);
  border-radius: 4px;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-lg);
  left: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) 1.2s forwards;
}

.hero__scroll-line {
  width: 40px;
  height: 1px;
  background: var(--color-ink);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  animation: scrollLine 2s var(--ease-in-out) infinite;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

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

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

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-ink);
}

.btn--large {
  padding: 1.25rem 2.5rem;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Problem Section
   -------------------------------------------------------------------------- */
.problem {
  padding: var(--space-3xl) 0;
  background: var(--color-ink);
  color: var(--color-paper);
}

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

.problem .section-label {
  color: var(--color-accent-light);
}

.problem__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.3;
  margin-bottom: var(--space-xl);
}

.problem__title em {
  color: var(--color-accent-light);
}

.problem__stats {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 600px) {
  .problem__stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.stat__number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: var(--color-accent-light);
  line-height: 1;
}

.stat__label {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Methodology Section
   -------------------------------------------------------------------------- */
.methodology {
  padding: var(--space-3xl) 0;
}

.methodology__header {
  max-width: var(--container-narrow);
  margin-bottom: var(--space-2xl);
}

.methodology__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-md);
}

.methodology__subtitle {
  font-size: 1.125rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.methodology__pillars {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .methodology__pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .methodology__pillars {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pillar {
  padding: var(--space-lg);
  background: var(--color-paper-warm);
  border-radius: 12px;
  transition: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal);
}

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

.pillar__number {
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.pillar__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.pillar__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Testimonials Section
   -------------------------------------------------------------------------- */
.testimonials {
  padding: var(--space-3xl) 0;
  background: var(--color-paper-warm);
}

.testimonials .section-label {
  text-align: center;
}

.testimonials__grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial {
  padding: var(--space-lg);
  background: var(--color-paper);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
}

.testimonial__quote {
  font-family: var(--font-display);
  font-size: 1.125rem;
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-md);
}

.testimonial__author {
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
  padding: var(--space-3xl) 0;
}

.cta-card {
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: 20px;
  padding: var(--space-2xl);
  display: grid;
  gap: var(--space-xl);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .cta-card {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: var(--space-2xl) var(--space-3xl);
  }
}

.cta-card__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
}

.cta-card__title em {
  color: var(--color-accent-light);
}

.cta-card__desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-lg);
  max-width: 500px;
}

.cta-card .btn--primary {
  background: var(--color-paper);
  color: var(--color-ink);
}

.cta-card .btn--primary:hover {
  background: var(--color-paper-warm);
}

.cta-visual__element {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0.3;
  filter: blur(40px);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  background: var(--color-paper-warm);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr 2fr;
  }
}

.footer__brand .nav__logo-mark {
  margin-bottom: var(--space-md);
}

.footer__tagline {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 280px;
}

.footer__links {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 480px) {
  .footer__links {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer__col h4 {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  color: var(--color-ink);
}

.footer__col a,
.footer__col address {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
  transition: color var(--duration-fast);
}

.footer__col a:hover {
  color: var(--color-ink);
}

.footer__bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer__bottom p {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes scrollLine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* --------------------------------------------------------------------------
   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;
  }
}