/* ======================================================
   MAD HATTER — Environment & Sustainability
   Design System & Global Styles
   ====================================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand palette */
  --color-primary:        hsl(152, 68%, 42%);
  --color-primary-light:  hsl(152, 68%, 55%);
  --color-primary-dark:   hsl(152, 68%, 28%);
  --color-accent:         hsl(42, 95%, 55%);
  --color-accent-light:   hsl(42, 95%, 68%);

  /* Neutral palette */
  --color-bg:             hsl(160, 15%, 6%);
  --color-bg-alt:         hsl(160, 12%, 9%);
  --color-surface:        hsl(160, 10%, 12%);
  --color-surface-hover:  hsl(160, 10%, 16%);
  --color-border:         hsla(152, 30%, 40%, 0.15);

  /* Text */
  --color-text:           hsl(150, 10%, 92%);
  --color-text-muted:     hsl(150, 8%, 60%);
  --color-text-dim:       hsl(150, 6%, 42%);

  /* Gradients */
  --gradient-hero:        linear-gradient(135deg, hsl(152, 60%, 15%) 0%, hsl(160, 20%, 6%) 50%, hsl(200, 30%, 8%) 100%);
  --gradient-card:        linear-gradient(145deg, hsla(152, 40%, 20%, 0.25), hsla(160, 20%, 10%, 0.4));
  --gradient-cta:         linear-gradient(135deg, var(--color-primary) 0%, hsl(170, 60%, 38%) 100%);
  --gradient-accent:      linear-gradient(135deg, var(--color-accent) 0%, hsl(30, 90%, 50%) 100%);

  /* Glass */
  --glass-bg:             hsla(160, 15%, 10%, 0.55);
  --glass-border:         hsla(152, 40%, 50%, 0.12);
  --glass-blur:           20px;

  /* Typography */
  --font-heading:  'Outfit', sans-serif;
  --font-body:     'Inter', sans-serif;

  /* Spacing scale */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  4rem;
  --space-4xl:  6rem;
  --space-5xl:  8rem;

  /* Radius */
  --radius-sm:  0.5rem;
  --radius-md:  0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 600ms;

  /* Shadows */
  --shadow-sm:  0 2px 8px hsla(0, 0%, 0%, 0.2);
  --shadow-md:  0 4px 20px hsla(0, 0%, 0%, 0.3);
  --shadow-lg:  0 8px 40px hsla(0, 0%, 0%, 0.4);
  --shadow-glow: 0 0 40px hsla(152, 68%, 42%, 0.15);

  /* Container */
  --container-max: 1200px;
  --container-wide: 1400px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--duration-fast) var(--ease-out);
}

ul, ol {
  list-style: none;
}

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

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

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

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

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.15;
  font-weight: 700;
}

.heading-xl {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.heading-lg {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.heading-md {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
}

.heading-sm {
  font-size: 1.1rem;
  font-weight: 600;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

/* ---------- Section ---------- */
.section {
  padding-block: var(--space-5xl);
  position: relative;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: var(--space-lg);
}

.section__label::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section__title {
  margin-bottom: var(--space-lg);
}

.section__desc {
  max-width: 640px;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-cta);
  color: var(--color-bg);
  box-shadow: 0 4px 20px hsla(152, 68%, 42%, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px hsla(152, 68%, 42%, 0.45);
}

.btn--outline {
  border: 1.5px solid var(--glass-border);
  color: var(--color-text);
  backdrop-filter: blur(8px);
  background: hsla(160, 15%, 10%, 0.3);
}

.btn--outline:hover {
  background: hsla(152, 40%, 20%, 0.2);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.btn--icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-lg) 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav.scrolled {
  background: hsla(160, 15%, 6%, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav__brand-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-cta);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav__link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding-bottom: 4px;
}

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

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

.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  margin-left: var(--space-md);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-fast) var(--ease-out);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.7);
}

.hero__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    hsla(160, 15%, 6%, 0.4) 0%,
    hsla(160, 15%, 6%, 0.7) 50%,
    hsla(160, 15%, 6%, 0.95) 80%,
    hsl(160, 15%, 6%) 100%
  );
}

.hero__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.2;
  animation: float 8s ease-in-out infinite;
}

.hero__glow--1 {
  top: -200px;
  right: -100px;
  background: var(--color-primary);
}

.hero__glow--2 {
  bottom: -200px;
  left: -100px;
  background: var(--color-accent);
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.05); }
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-top: 100px;
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-lg) var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  background: hsla(152, 40%, 20%, 0.2);
  border: 1px solid var(--glass-border);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary-light);
  margin-bottom: var(--space-2xl);
  backdrop-filter: blur(10px);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 hsla(152, 68%, 42%, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 8px hsla(152, 68%, 42%, 0); }
}

.hero__title {
  margin-bottom: var(--space-xl);
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  max-width: 560px;
}

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

.hero__stats {
  display: flex;
  gap: var(--space-3xl);
  margin-top: var(--space-4xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.hero__stat-value {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-text), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-top: var(--space-xs);
}

/* ---------- About ---------- */
.about {
  background: var(--color-bg-alt);
}

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

.about__image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.about__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.about__image-wrapper:hover .about__image {
  transform: scale(1.03);
}

.about__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, hsla(152, 60%, 30%, 0.15), transparent);
  pointer-events: none;
}

.about__image-float {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 180px;
  padding: var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg);
}

.about__float-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-light);
}

.about__float-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.about__text {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.9;
  margin-bottom: var(--space-xl);
}

.about__values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.about__value {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.about__value-icon {
  width: 44px;
  height: 44px;
  background: hsla(152, 40%, 20%, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  border: 1px solid var(--glass-border);
}

.about__value-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: var(--space-xs);
}

.about__value-desc {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  line-height: 1.6;
}

/* ---------- Services ---------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.service-card {
  position: relative;
  padding: var(--space-2xl);
  background: var(--gradient-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-cta);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: hsla(152, 40%, 50%, 0.25);
  box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__icon {
  width: 56px;
  height: 56px;
  background: hsla(152, 40%, 20%, 0.25);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: var(--space-xl);
  border: 1px solid var(--glass-border);
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.service-card__desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: var(--space-xl);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary-light);
  transition: gap var(--duration-fast) var(--ease-out);
}

.service-card__link:hover {
  gap: var(--space-md);
}

/* ---------- Impact ---------- */
.impact {
  background: var(--color-bg-alt);
  overflow: hidden;
}

.impact__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.impact-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--gradient-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--duration-normal) var(--ease-out);
}

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

.impact-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.impact-card__value {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.impact-card__label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---------- Projects / Showcase ---------- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.project-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  cursor: pointer;
}

.project-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover .project-card__image {
  transform: scale(1.06);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    hsla(160, 15%, 6%, 0.95) 0%,
    hsla(160, 15%, 6%, 0.3) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-2xl);
  transition: background var(--duration-normal) var(--ease-out);
}

.project-card:hover .project-card__overlay {
  background: linear-gradient(
    0deg,
    hsla(160, 15%, 6%, 0.98) 0%,
    hsla(160, 15%, 6%, 0.5) 60%,
    hsla(160, 15%, 6%, 0.2) 100%
  );
}

.project-card__tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: hsla(152, 40%, 20%, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  width: fit-content;
  margin-bottom: var(--space-md);
  backdrop-filter: blur(8px);
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- Testimonials ---------- */
.testimonials {
  background: var(--color-bg-alt);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.testimonial-card {
  padding: var(--space-2xl);
  background: var(--gradient-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--duration-normal) var(--ease-out);
}

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

.testimonial-card__quote {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  font-style: italic;
  position: relative;
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-primary);
}

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

.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--gradient-cta);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-bg);
}

.testimonial-card__name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
}

.testimonial-card__role {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 2px;
}

/* ---------- CTA / Newsletter ---------- */
.cta {
  position: relative;
  overflow: hidden;
}

.cta__inner {
  position: relative;
  padding: var(--space-4xl) var(--space-3xl);
  background: var(--gradient-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  text-align: center;
  overflow: hidden;
}

.cta__glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.08;
  filter: blur(100px);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
}

.cta__title {
  position: relative;
  margin-bottom: var(--space-lg);
}

.cta__desc {
  position: relative;
  max-width: 540px;
  margin-inline: auto;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
}

.cta__form {
  position: relative;
  display: flex;
  gap: var(--space-md);
  max-width: 480px;
  margin-inline: auto;
}

.cta__input {
  flex: 1;
  padding: 0.85rem 1.5rem;
  background: hsla(160, 15%, 10%, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.cta__input::placeholder {
  color: var(--color-text-dim);
}

.cta__input:focus {
  border-color: var(--color-primary);
}

/* ---------- Footer ---------- */
.footer {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

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

.footer__brand {
  max-width: 300px;
}

.footer__brand-name {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: var(--space-lg);
}

.footer__brand-desc {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.footer__socials {
  display: flex;
  gap: var(--space-md);
}

.footer__social {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--duration-fast) var(--ease-out);
  color: var(--color-text-muted);
}

.footer__social:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
  transform: translateY(-2px);
}

.footer__col-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: var(--space-xl);
}

.footer__link {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-dim);
  padding-block: var(--space-sm);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-xl);
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

/* ---------- Counter Animation ---------- */
.counter {
  display: inline-block;
}

/* ---------- Mobile Navigation Overlay ---------- */
.nav__menu-overlay {
  display: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu-overlay {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    z-index: 999;
    background: hsla(160, 15%, 6%, 0.97);
    backdrop-filter: blur(30px);
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out);
  }

  .nav__menu-overlay.open {
    opacity: 1;
    pointer-events: all;
  }

  .nav__menu-overlay .nav__link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
  }

  .hero__content {
    padding-top: 80px;
  }

  .hero__stats {
    gap: var(--space-xl);
    flex-wrap: wrap;
  }

  .hero__stat-value {
    font-size: 1.6rem;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

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

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

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

  .cta__form {
    flex-direction: column;
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .impact__grid {
    grid-template-columns: 1fr;
  }

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }
}