/* ══════════════════════════════════════════════
   [ nelsalinas ] — Design System & Styles v1.2
   ══════════════════════════════════════════════ */

/* ─── Tokens ─── */
:root {
  /* Palette */
  --black: #000000;
  --bg: #0e0e0e;
  --surface: #0e0e0e;
  --surface-low: #131313;
  --surface-container: #191a1a;
  --surface-high: #1f2020;
  --surface-highest: #252626;
  --surface-bright: #2c2c2c;
  --outline: #767575;
  --outline-variant: #484848;

  --on-surface: #e7e5e4;
  --on-surface-variant: #acabaa;

  --primary: #b9c8dd;
  --primary-dim: #acbacf;
  --primary-container: #3a4859;
  --on-primary: #344153;

  --secondary: #a0adc0;
  --secondary-container: #2e3c50;

  --tertiary: #f0f3ff;
  --on-tertiary: #515c70;

  --error: #ee7d77;

  /* Typography */
  --font-headline: 'Newsreader', serif;
  --font-body: 'Outfit', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 3rem;
  --space-2xl: 6rem;
  --space-3xl: 12rem;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --duration-fast: 250ms;
  --duration-normal: 400ms;
  --duration-slow: 600ms;
}

/* ─── 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;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--on-surface);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.025;
}

::selection {
  background: var(--primary);
  color: var(--on-primary);
}

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

ul, ol {
  list-style: none;
}

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

button {
  border: none;
  cursor: pointer;
  font-family: inherit;
}


/* ═══════════════════ SKIP LINK ═══════════════════ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--on-primary);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 200;
  transition: top var(--duration-fast) var(--ease-out-expo);
}

.skip-link:focus {
  top: 1rem;
}


/* ═══════════════════ SCROLL PROGRESS ═══════════════════ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--primary-dim));
  z-index: 200;
  transition: none;
  will-change: width;
}


/* ═══════════════════ NAVBAR ═══════════════════ */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 3rem;
  max-width: 1920px;
  margin: 0 auto;
  background: rgba(14, 14, 14, 0.6);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition: background var(--duration-normal) var(--ease-out-expo),
              padding var(--duration-normal) var(--ease-out-expo),
              border-color var(--duration-normal) var(--ease-out-expo);
  border-bottom: 1px solid transparent;
}

#main-nav.scrolled {
  background: rgba(14, 14, 14, 0.92);
  padding: 1rem 3rem;
  border-bottom: 1px solid rgba(72, 72, 72, 0.15);
}

.nav-logo {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 700;
  color: #a3b1c6;
  letter-spacing: 0.1em;
  transition: color 1.2s var(--ease-out-expo);
  cursor: default;
}

.nav-logo:hover {
  color: var(--tertiary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-headline);
  font-style: italic;
  color: var(--secondary);
  letter-spacing: -0.02em;
  position: relative;
  transition: color var(--duration-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width var(--duration-normal) var(--ease-out-expo);
}

.nav-link:hover {
  color: var(--tertiary);
}

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

.nav-link.active {
  color: var(--tertiary);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--primary);
  color: var(--on-primary);
  padding: 0.6rem 1.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  transition: transform var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo);
}

.nav-cta:hover {
  transform: scale(0.96);
  box-shadow: 0 0 30px rgba(185, 200, 221, 0.12);
}

.external-icon {
  opacity: 0.6;
  flex-shrink: 0;
}

/* Menu toggle - mobile */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background: none;
  padding: 8px;
  width: 44px;
  height: 44px;
  z-index: 110;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--tertiary);
  transition: transform var(--duration-fast) var(--ease-out-expo),
              opacity var(--duration-fast);
}

.menu-toggle.active span:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.menu-toggle.active span:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(14, 14, 14, 0.97);
  backdrop-filter: blur(40px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out-expo);
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-link {
  font-family: var(--font-headline);
  font-size: 2rem;
  font-style: italic;
  color: var(--secondary);
  transition: color var(--duration-fast);
}

.mobile-link:hover {
  color: var(--tertiary);
}

.mobile-link-cta {
  display: inline-block;
  margin-top: 1rem;
  background: var(--primary);
  color: var(--on-primary);
  padding: 1rem 2.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}


/* ═══════════════════ EDITORIAL GRID ═══════════════════ */
.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.sidebar {
  grid-column: span 12;
  padding-top: 0.25rem;
}

.content {
  grid-column: span 12;
}

@media (min-width: 1024px) {
  .sidebar {
    grid-column: 1 / span 3;
  }

  .content {
    grid-column: 5 / span 7;
  }
}


/* ═══════════════════ SECTION DIVIDER ═══════════════════ */
.section-divider {
  grid-column: span 12;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(72, 72, 72, 0.2) 20%, rgba(72, 72, 72, 0.2) 80%, transparent);
  margin-bottom: 2rem;
}


/* ═══════════════════ HERO ═══════════════════ */
.hero {
  position: relative;
  padding: 12rem 3rem 6rem;
  max-width: 1920px;
  margin: 0 auto;
  overflow: hidden;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4rem;
}

@media (min-width: 1024px) {
  .hero {
    flex-direction: row;
    justify-content: space-between;
    gap: 6rem;
  }
}

.hero-visual {
  width: 100%;
  aspect-ratio: 1 / 1; 
  position: relative;
  z-index: 2;
}

@media (min-width: 1024px) {
  .hero-visual {
    height: auto;
    max-height: 70vh; 
  }
}

#particle-canvas {
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.85;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.label-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--secondary);
  margin-bottom: 2rem;
}

.hero-title {
  font-family: var(--font-headline);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--tertiary);
  margin-bottom: 3rem;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--secondary);
  max-width: 42rem;
  line-height: 1.6;
  margin-bottom: 3rem;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(72, 72, 72, 0.15);
}

@media (min-width: 768px) {
  .hero-meta {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
}

.hero-axes {
  font-size: 0.875rem;
  color: var(--primary);
}

.hero-meta-links {
  display: flex;
  gap: 2rem;
}

.underline-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary);
  padding-bottom: 0.25rem;
  border-bottom: 1px solid rgba(185, 200, 221, 0.3);
  transition: border-color var(--duration-fast),
              color var(--duration-fast);
}

.underline-link:hover {
  border-color: var(--primary);
  color: var(--tertiary);
}

/* Scroll indicator */
.hero-scroll-hint {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.scroll-hint-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 0.8; transform: scaleY(1); }
}

/* Hero particles */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.03;
  background: var(--primary);
  filter: blur(80px);
  animation: float-particle 20s ease-in-out infinite alternate;
}

.p1 {
  width: 500px;
  height: 500px;
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.p2 {
  width: 350px;
  height: 350px;
  bottom: 10%;
  left: 10%;
  animation-delay: -7s;
}

.p3 {
  width: 200px;
  height: 200px;
  top: 40%;
  right: 30%;
  animation-delay: -14s;
  opacity: 0.02;
}

@keyframes float-particle {
  0% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -50px) scale(1.1); }
  66% { transform: translate(-20px, 30px) scale(0.95); }
  100% { transform: translate(15px, -25px) scale(1.05); }
}


/* ═══════════════════ SECTIONS ═══════════════════ */
.section {
  padding: 0 3rem;
  margin-bottom: 8rem;
  max-width: 1920px;
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--secondary);
}

.section-heading {
  font-family: var(--font-headline);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  color: var(--tertiary);
  margin-bottom: 2rem;
  line-height: 1.35;
}

.section-body {
  font-size: 1.125rem;
  color: var(--secondary);
  line-height: 1.65;
  max-width: 36rem;
}

/* Dash list */
.dash-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
}

.dash-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--outline);
}

.dash-list.small {
  font-size: 0.875rem;
}

.dash-list.small li {
  margin-bottom: 0.35rem;
}

.dash-list.tight li {
  margin-bottom: 0.25rem;
}

.emphasis {
  font-weight: 700;
  margin-top: 1rem;
  color: var(--primary-dim);
}


/* ─── Approach card (02. Enfoque) ─── */
.approach-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
  background: var(--surface-low);
  padding: 2rem;
  border: 1px solid transparent;
  transition: box-shadow var(--duration-slow) var(--ease-out-expo),
              border-color var(--duration-slow) var(--ease-out-expo);
}

.approach-card:hover {
  box-shadow: 0 0 60px rgba(185, 200, 221, 0.04);
  border-color: rgba(72, 72, 72, 0.1);
}

@media (min-width: 768px) {
  .approach-card {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 2.5rem;
  }
}

.approach-title {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1rem;
}

.approach-text {
  font-size: 0.875rem;
  color: var(--secondary);
  line-height: 1.6;
}


/* ─── Services (03. Servicios) ─── */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0 3rem;
  }
}

.service-card {
  position: relative;
  padding: 2rem 0;
  border-bottom: 1px solid rgba(72, 72, 72, 0.1);
  transition: transform var(--duration-normal) var(--ease-out-expo),
              border-color var(--duration-normal) var(--ease-out-expo);
  cursor: default;
}

.service-icon-line {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), transparent);
  transition: width var(--duration-slow) var(--ease-out-expo);
}

.service-card:hover .service-icon-line {
  width: 100%;
}

.service-card.revealed:hover,
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(185, 200, 221, 0.1);
}

.service-title {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--tertiary);
  margin-bottom: 0.75rem;
  transition: color var(--duration-fast);
}

.service-card:hover .service-title {
  color: var(--primary);
}

.service-desc {
  font-size: 0.875rem;
  color: var(--secondary);
  line-height: 1.6;
}


/* ─── Cases (04. Casos) ─── */
.case-card {
  background: var(--surface-container);
  padding: 2rem;
  margin-bottom: 2rem;
  transition: box-shadow var(--duration-slow) var(--ease-out-expo),
              border-color var(--duration-slow);
  border: 1px solid transparent;
}

.case-card.revealed:hover,
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 60px rgba(0, 0, 0, 0.4);
  border-color: rgba(185, 200, 221, 0.15);
}

@media (min-width: 768px) {
  .case-card {
    padding: 2.5rem;
  }
}

.case-header {
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid rgba(72, 72, 72, 0.2);
}

.case-title {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  color: var(--tertiary);
}

.case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .case-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.case-label {
  display: block;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(160, 173, 192, 0.6);
  margin-bottom: 1rem;
}

.case-text {
  font-size: 0.875rem;
  color: var(--secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.case-text strong {
  color: var(--on-surface-variant);
}


/* ─── Awards (05. Reconocimientos) ─── */
.awards-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 2rem 0;
}

.award-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 2rem;
  border: 1px solid rgba(72, 72, 72, 0.2);
  transition: border-color var(--duration-slow) var(--ease-out-expo),
              box-shadow var(--duration-slow) var(--ease-out-expo);
}

.award-item:hover {
  border-color: rgba(185, 200, 221, 0.15);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.award-shield {
  color: var(--primary);
  flex-shrink: 0;
}

.award-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.award-name {
  font-family: var(--font-headline);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--tertiary);
}

.award-org {
  font-size: 0.75rem;
  color: var(--secondary);
  letter-spacing: 0.05em;
}


/* ─── Result (06. Resultado) ─── */
.result-card {
  background: var(--primary);
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.05) 100%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .result-card {
    padding: 4rem;
  }
}

.result-heading {
  font-family: var(--font-headline);
  font-style: italic;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--on-primary);
  margin-bottom: 2rem;
  position: relative;
}

.result-list {
  position: relative;
}

.result-list li {
  font-size: 1.125rem;
  color: rgba(52, 65, 83, 0.8);
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.result-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: rgba(52, 65, 83, 0.5);
}


/* ─── Process (07. Proceso) ─── */
.process-list {
  margin-bottom: 3rem;
}

.process-step {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  padding: 1.5rem 0 1.5rem 2rem;
  border-left: 1px solid rgba(72, 72, 72, 0.3);
  position: relative;
  transition: border-color var(--duration-normal);
}

.process-step::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  width: 1px;
  height: 0;
  background: var(--primary);
  transition: height var(--duration-slow) var(--ease-out-expo);
}

.process-step.revealed::before {
  height: 100%;
}

.process-num {
  font-family: var(--font-headline);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
  min-width: 2rem;
}

.process-name {
  font-family: var(--font-body);
  font-weight: 700;
  color: var(--tertiary);
  margin-bottom: 0.25rem;
}

.process-desc {
  font-size: 0.8125rem;
  color: var(--secondary);
  line-height: 1.5;
  opacity: 0.8;
}

.process-note {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--secondary);
  padding-left: 2rem;
  border-left: 1px solid rgba(72, 72, 72, 0.3);
}


/* ─── Filter (08. Filtro) ─── */
.filter-card {
  border: 1px solid rgba(72, 72, 72, 0.2);
  padding: 3rem;
  transition: border-color var(--duration-slow);
}

.filter-card:hover {
  border-color: rgba(72, 72, 72, 0.35);
}

.filter-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .filter-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.filter-title {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.filter-title.positive {
  color: var(--primary);
}

.filter-title.negative {
  color: var(--error);
}

.filter-list li {
  font-family: var(--font-headline);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--secondary);
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.5rem;
}

.filter-list li::before {
  content: '—';
  position: absolute;
  left: 0;
}


/* ═══════════════════ CTA SECTION ═══════════════════ */
.cta-section {
  position: relative;
  padding-top: 4rem;
  padding-bottom: 4rem;
  margin-bottom: 0;
}

.cta-heading {
  font-family: var(--font-headline);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.75rem);
  color: var(--tertiary);
  margin-bottom: 3rem;
  line-height: 1.15;
}

.cta-button {
  display: inline-block;
  position: relative;
  overflow: hidden;
  background: var(--primary);
  color: var(--on-primary);
  padding: 1.25rem 3rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: transform var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo),
              background var(--duration-fast);
}

.cta-button-text {
  position: relative;
  z-index: 1;
}

.cta-button-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.6s var(--ease-out-expo);
  z-index: 0;
}

.cta-button:hover .cta-button-shine {
  left: 100%;
}

.cta-button:hover {
  transform: scale(0.97);
  box-shadow: 0 0 80px rgba(185, 200, 221, 0.15),
              0 0 30px rgba(185, 200, 221, 0.08);
  background: var(--primary-dim);
}

.cta-glow {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(185, 200, 221, 0.04) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.5s var(--ease-out-expo);
}

.cta-section:hover .cta-glow {
  opacity: 1;
}


/* ═══════════════════ FOOTER ═══════════════════ */
#main-footer {
  max-width: 1920px;
  margin: 6rem auto 0;
  padding: 0 3rem;
  border-top: 1px solid rgba(72, 72, 72, 0.15);
}

.footer-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 3rem 0 2rem;
}

@media (min-width: 768px) {
  .footer-main {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.footer-logo {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  color: #a3b1c6;
  letter-spacing: 0.1em;
}

.footer-tagline {
  font-size: 0.75rem;
  color: var(--secondary);
  opacity: 0.7;
}

.footer-location {
  font-size: 0.75rem;
  color: var(--secondary);
  opacity: 0.6;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid rgba(72, 72, 72, 0.08);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copy {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary);
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  opacity: 0.7;
  transition: opacity var(--duration-fast),
              color var(--duration-fast);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--primary);
}


/* ═══════════════════ SCROLL TO TOP ═══════════════════ */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-high);
  color: var(--secondary);
  border: 1px solid rgba(72, 72, 72, 0.2);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              transform var(--duration-normal) var(--ease-out-expo),
              background var(--duration-fast),
              color var(--duration-fast);
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--surface-highest);
  color: var(--tertiary);
}


/* ═══════════════════ REVEAL ANIMATIONS ═══════════════════ */
.reveal {
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}

.reveal.reveal-up {
  transform: translateY(30px);
}

.reveal.reveal-left {
  transform: translateX(-20px);
}

.reveal.reveal-scale {
  transform: scale(0.96);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays */
.delay-0 { transition-delay: 0ms; }
.delay-1 { transition-delay: 100ms; }
.delay-2 { transition-delay: 200ms; }
.delay-3 { transition-delay: 300ms; }


/* ═══════════════════ REDUCED MOTION ═══════════════════ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .scroll-hint-line {
    animation: none;
    opacity: 0.5;
  }

  .particle {
    animation: none;
  }
}


/* ═══════════════════ RESPONSIVE ═══════════════════ */
@media (max-width: 1023px) {
  body::before {
    display: none;
  }

  .hero {
    padding: 8rem 2rem 4rem;
    min-height: auto;
  }

  .section {
    padding: 0 2rem;
    margin-bottom: 5rem;
  }

  #main-nav {
    padding: 1.25rem 2rem;
  }

  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .cta-section {
    padding-top: 3rem;
  }

  .hero-scroll-hint {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 7rem 1.25rem 3rem;
  }

  .section {
    padding: 0 1.25rem;
    margin-bottom: 4rem;
  }

  #main-nav {
    padding: 1rem 1.25rem;
  }

  .result-card {
    padding: 2rem 1.5rem;
  }

  .filter-card {
    padding: 2rem 1.5rem;
  }

  .approach-card {
    padding: 1.5rem;
  }

  .case-card {
    padding: 1.5rem;
  }

  #main-footer {
    padding: 0 1.25rem;
    margin-top: 4rem;
  }

  .cta-button {
    padding: 1rem 2rem;
    width: 100%;
    text-align: center;
  }

  .award-item {
    padding: 1.25rem 1.5rem;
    width: 100%;
  }

  .scroll-top {
    bottom: max(1.25rem, env(safe-area-inset-bottom));
    right: max(1.25rem, env(safe-area-inset-right));
  }
}


/* ═══════════════════ CUSTOM SCROLLBAR ═══════════════════ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--outline-variant);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--outline);
}


/* ═══════════════════ FOCUS STYLES ═══════════════════ */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}