/*
Theme Name: FSESL Lightweight
Theme URI: https://fsesl.com/
Author: FSESL
Description: Lightweight custom theme for FSESL.
Version: 1.1.0
Text Domain: fsesl
*/

:root {
  --fs-bg: #ffffff;
  --fs-surface: #f5f7f9;
  --fs-dark: #111827;
  --fs-text: #374151;
  --fs-accent: #1769aa;
  --fs-border: #e5e7eb;
  --fs-max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--fs-text);
  background: var(--fs-bg);
  line-height: 1.6;
}

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

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

.fs-wrap {
  width: min(100% - 32px, var(--fs-max));
  margin-inline: auto;
}


/* HEADER */

.fs-topbar {
  background: #0a1628;
  color: #cbd5e1;
  font-size: .78rem;
}

.fs-topbar-inner {
  min-height: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.fs-topbar-contact {
  display: flex;
  gap: 24px;
}

.fs-topbar-contact a {
  transition: color .2s ease;
}

.fs-topbar-contact a:hover {
  color: #ffffff;
}

.fs-header {
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid #e6ebf0;
}

.fs-header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.fs-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.fs-brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--fs-accent);
  color: #ffffff;
  border-radius: 7px;
  font-weight: 900;
  letter-spacing: -.04em;
}

.fs-brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.fs-brand-copy strong {
  font-size: 1.22rem;
  color: var(--fs-dark);
  letter-spacing: .02em;
}

.fs-brand-copy small {
  color: #778294;
  font-size: .7rem;
  font-weight: 600;
}

.fs-nav {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  font-size: .92rem;
  font-weight: 600;
}

.fs-nav a:hover {
  color: var(--fs-accent);
}


/* BUTTONS */

.fs-btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 6px;
  font-weight: 700;
  background: var(--fs-accent);
  color: #ffffff;
}

.fs-btn:hover {
  filter: brightness(.92);
  color: #ffffff;
}

.fs-nav-cta {
  margin-left: 5px;
}

.fs-btn-large {
  padding: 14px 24px;
}

.fs-btn-outline {
  display: inline-block;
  padding: 13px 22px;
  border: 1px solid #bcc6d1;
  border-radius: 6px;
  color: var(--fs-dark);
  font-weight: 700;
  background: rgba(255, 255, 255, .6);
}

.fs-btn-outline:hover {
  border-color: var(--fs-accent);
  color: var(--fs-accent);
}


/* HERO */

.fs-hero {
  position: relative;
  overflow: hidden;
  padding: 110px 0 105px;
  background:
    linear-gradient(
      115deg,
      #f4f7fa 0%,
      #ffffff 54%,
      #edf4f9 100%
    );
}

.fs-hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 80px;
  align-items: center;
}

.fs-hero-content {
  max-width: 760px;
}

.fs-eyebrow {
  color: var(--fs-accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .82rem;
}

.fs-hero h1 {
  max-width: 850px;
  margin: 14px 0 24px;
  font-size: clamp(3rem, 5.7vw, 5.5rem);
  line-height: .98;
  letter-spacing: -.045em;
  color: var(--fs-dark);
}

.fs-hero h1 span {
  color: var(--fs-accent);
}

.fs-hero-lead {
  max-width: 700px;
  margin: 0;
  color: #596579;
  font-size: 1.12rem;
  line-height: 1.75;
}

.fs-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.fs-hero-trust {
  margin-top: 52px;
  display: flex;
  gap: 38px;
  flex-wrap: wrap;
}

.fs-hero-trust div {
  display: flex;
  flex-direction: column;
}

.fs-hero-trust strong {
  color: var(--fs-dark);
  font-size: .96rem;
}

.fs-hero-trust span {
  color: #7d8796;
  font-size: .77rem;
}

.fs-hero-panel {
  position: relative;
  padding: 34px;
  background: #0e1b2d;
  color: #ffffff;
  border-radius: 14px;
  box-shadow: 0 24px 70px rgba(14, 27, 45, .16);
}

.fs-hero-panel-label {
  margin-bottom: 26px;
  color: #7ebce9;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .7rem;
  font-weight: 800;
}

.fs-hero-capability {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 19px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.fs-hero-capability:last-child {
  border-bottom: 0;
}

.fs-hero-capability > span {
  color: #5ca7dc;
  font-size: .72rem;
  font-weight: 800;
}

.fs-hero-capability div {
  display: flex;
  flex-direction: column;
}

.fs-hero-capability strong {
  font-size: 1rem;
}

.fs-hero-capability small {
  margin-top: 3px;
  color: #aab6c6;
}

.fs-hero-decoration {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.fs-hero-decoration-one {
  width: 500px;
  height: 500px;
  right: -230px;
  top: -180px;
  border: 1px solid rgba(23, 105, 170, .12);
}

.fs-hero-decoration-two {
  width: 350px;
  height: 350px;
  right: -120px;
  top: -90px;
  border: 1px solid rgba(23, 105, 170, .1);
}


/* CONTENT */

.fs-section {
  padding: 80px 0;
}

.fs-section-alt {
  background: var(--fs-surface);
}

.fs-section h2 {
  margin-top: 0;
  color: var(--fs-dark);
  font-size: clamp(2rem, 4vw, 3rem);
}

.fs-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.fs-card {
  background: #ffffff;
  border: 1px solid var(--fs-border);
  padding: 28px;
  border-radius: 10px;
}

.fs-card h3 {
  margin-top: 0;
  color: var(--fs-dark);
}


/* CTA */

.fs-cta {
  background: var(--fs-dark);
  color: #ffffff;
  padding: 72px 0;
}

.fs-cta h2 {
  color: #ffffff;
  margin-top: 0;
}


/* FOOTER */

.fs-footer {
  padding: 36px 0;
  background: #0b1220;
  color: #cbd5e1;
}

.fs-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}


/* TABLET */

@media (max-width: 980px) {

  .fs-hero-layout {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .fs-hero-panel {
    max-width: 620px;
  }

}


/* MOBILE */

@media (max-width: 800px) {

  .fs-topbar {
    display: none;
  }

  .fs-header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }

  .fs-nav {
    gap: 14px;
  }

  .fs-hero {
    padding: 72px 0;
  }

  .fs-hero h1 {
    font-size: clamp(2.7rem, 13vw, 4.2rem);
  }

  .fs-hero-trust {
    gap: 24px;
  }

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

}


/* ==================================================
   PRODUCTS PAGE
================================================== */

.fs-page-hero {
  padding: 88px 0 78px;
  background:
    linear-gradient(
      115deg,
      #eef4f8 0%,
      #ffffff 65%,
      #f6f9fb 100%
    );
  border-bottom: 1px solid var(--fs-border);
}

.fs-page-hero-inner {
  max-width: 850px;
}

.fs-page-hero h1 {
  margin: 12px 0 22px;
  color: var(--fs-dark);
  font-size: clamp(2.7rem, 5vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -.04em;
}

.fs-page-hero p {
  max-width: 720px;
  margin: 0;
  color: #5b6675;
  font-size: 1.12rem;
  line-height: 1.75;
}

.fs-section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  margin-bottom: 44px;
}

.fs-section-heading h2 {
  margin-bottom: 0;
}

.fs-section-heading > p {
  margin: 0;
  color: #697485;
}

.fs-product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.fs-product-card {
  position: relative;
  padding: 30px;
  border: 1px solid var(--fs-border);
  border-radius: 10px;
  background: #ffffff;
  transition:
    transform .2s ease,
    border-color .2s ease,
    box-shadow .2s ease;
}

.fs-product-card:hover {
  transform: translateY(-3px);
  border-color: #c7d8e5;
  box-shadow: 0 14px 34px rgba(15, 23, 42, .07);
}

.fs-product-number {
  margin-bottom: 24px;
  color: var(--fs-accent);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .12em;
}

.fs-product-card h3 {
  margin: 0 0 10px;
  color: var(--fs-dark);
  font-size: 1.2rem;
}

.fs-product-card p {
  margin: 0;
  color: #687486;
}

.fs-products-feature {
  padding: 84px 0;
  background: #0e1b2d;
  color: #d7e0ea;
}

.fs-products-feature-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.fs-products-feature h2 {
  margin: 10px 0 18px;
  color: #ffffff;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.fs-products-feature p {
  margin: 0;
  max-width: 600px;
  color: #aeb9c8;
}

.fs-products-feature-list {
  display: grid;
  gap: 18px;
}

.fs-products-feature-list > div {
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.fs-products-feature-list strong {
  display: block;
  margin-bottom: 4px;
  color: #ffffff;
}

.fs-products-feature-list span {
  color: #9eacbd;
  font-size: .9rem;
}

@media (max-width: 800px) {

  .fs-page-hero {
    padding: 64px 0;
  }

  .fs-section-heading,
  .fs-products-feature-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .fs-product-grid {
    grid-template-columns: 1fr;
  }

}


/* ==================================================
   PROJECTS PAGE
================================================== */

.fs-project-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.fs-project-filter span {
  padding: 8px 14px;
  border: 1px solid var(--fs-border);
  border-radius: 999px;
  background: #ffffff;
  color: #667385;
  font-size: .82rem;
  font-weight: 700;
}

.fs-project-filter .fs-project-filter-active {
  background: var(--fs-dark);
  border-color: var(--fs-dark);
  color: #ffffff;
}

.fs-project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.fs-project-card {
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--fs-border);
  border-radius: 12px;
  transition:
    transform .2s ease,
    box-shadow .2s ease;
}

.fs-project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, .08);
}

.fs-project-visual {
  min-height: 230px;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.fs-project-visual::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
  right: -110px;
  top: -120px;
}

.fs-project-visual::after {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 50%;
  right: -40px;
  top: -50px;
}

.fs-project-visual span {
  position: relative;
  z-index: 2;
  color: #ffffff;
  font-size: 1.35rem;
  font-weight: 800;
}

.fs-project-visual-energy {
  background: linear-gradient(135deg, #155e75, #0f766e);
}

.fs-project-visual-hvac {
  background: linear-gradient(135deg, #1e3a5f, #1769aa);
}

.fs-project-visual-mechanical {
  background: linear-gradient(135deg, #293548, #4b5563);
}

.fs-project-visual-industrial {
  background: linear-gradient(135deg, #5b3a1d, #9a5b24);
}

.fs-project-content {
  padding: 28px;
}

.fs-project-meta {
  margin-bottom: 8px;
  color: var(--fs-accent);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .1em;
}

.fs-project-content h3 {
  margin: 0 0 12px;
  color: var(--fs-dark);
  font-size: 1.3rem;
}

.fs-project-content p {
  margin: 0;
  color: #687486;
}

.fs-project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.fs-project-tags span {
  padding: 6px 10px;
  background: var(--fs-surface);
  border-radius: 5px;
  color: #667385;
  font-size: .72rem;
  font-weight: 700;
}

.fs-project-process {
  padding: 84px 0;
  background: var(--fs-surface);
}

.fs-process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.fs-process-item {
  padding: 26px;
  background: #ffffff;
  border: 1px solid var(--fs-border);
  border-radius: 10px;
}

.fs-process-item > span {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--fs-accent);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .1em;
}

.fs-process-item h3 {
  margin: 0 0 10px;
  color: var(--fs-dark);
}

.fs-process-item p {
  margin: 0;
  color: #6b7686;
  font-size: .9rem;
}

@media (max-width: 900px) {

  .fs-project-grid {
    grid-template-columns: 1fr;
  }

  .fs-process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 600px) {

  .fs-process-grid {
    grid-template-columns: 1fr;
  }

}


/* ==================================================
   ABOUT PAGE
================================================== */

.fs-about-intro {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 90px;
  align-items: start;
}

.fs-about-intro h2 {
  margin: 10px 0 0;
  color: var(--fs-dark);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1.08;
}

.fs-about-copy {
  max-width: 700px;
}

.fs-about-copy p {
  color: #687486;
  margin: 0 0 20px;
}

.fs-about-copy .fs-about-lead {
  color: var(--fs-dark);
  font-size: 1.2rem;
  line-height: 1.7;
}

.fs-about-principles {
  padding: 84px 0;
  background: var(--fs-surface);
}

.fs-about-principle-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.fs-about-principle {
  padding: 28px;
  background: #ffffff;
  border: 1px solid var(--fs-border);
  border-radius: 10px;
}

.fs-about-principle > span {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--fs-accent);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .1em;
}

.fs-about-principle h3 {
  margin: 0 0 12px;
  color: var(--fs-dark);
}

.fs-about-principle p {
  margin: 0;
  color: #697586;
  font-size: .9rem;
}

.fs-about-capabilities {
  border-top: 1px solid var(--fs-border);
}

.fs-about-capability {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: 30px;
  padding: 22px 0;
  border-bottom: 1px solid var(--fs-border);
}

.fs-about-capability span {
  color: var(--fs-accent);
  font-weight: 800;
}

.fs-about-capability strong {
  color: var(--fs-dark);
  font-size: 1.05rem;
}

.fs-about-statement {
  padding: 100px 0;
  background: #0e1b2d;
  color: #ffffff;
}

.fs-about-statement-inner {
  max-width: 900px;
}

.fs-about-statement h2 {
  margin: 12px 0 24px;
  color: #ffffff;
  font-size: clamp(2.3rem, 4.5vw, 4rem);
  line-height: 1.08;
  letter-spacing: -.035em;
}

.fs-about-statement p {
  max-width: 680px;
  margin: 0;
  color: #aeb9c8;
  font-size: 1.05rem;
}

@media (max-width: 900px) {

  .fs-about-intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .fs-about-principle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 600px) {

  .fs-about-principle-grid {
    grid-template-columns: 1fr;
  }

  .fs-about-capability {
    grid-template-columns: 1fr;
    gap: 4px;
  }

}


/* ==================================================
   CONTACT PAGE
================================================== */

.fs-contact-layout {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 80px;
  align-items: start;
}

.fs-contact-layout h2 {
  margin: 10px 0 18px;
  color: var(--fs-dark);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
}

.fs-contact-intro {
  max-width: 560px;
  color: #687486;
}

.fs-contact-list {
  margin-top: 40px;
  border-top: 1px solid var(--fs-border);
}

.fs-contact-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--fs-border);
}

.fs-contact-item span {
  display: block;
  margin-bottom: 4px;
  color: #7b8795;
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.fs-contact-item a {
  color: var(--fs-dark);
  font-size: 1.15rem;
  font-weight: 800;
}

.fs-contact-panel {
  padding: 36px;
  background: var(--fs-surface);
  border: 1px solid var(--fs-border);
  border-radius: 12px;
}

.fs-contact-panel h2 {
  margin-top: 8px;
}

.fs-contact-form-note {
  padding: 12px 14px;
  margin-bottom: 24px;
  background: #fff7df;
  border: 1px solid #f0dfa6;
  border-radius: 6px;
  color: #725b1a;
  font-size: .86rem;
}

.fs-contact-form {
  display: grid;
  gap: 18px;
}

.fs-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.fs-contact-form label {
  display: grid;
  gap: 7px;
  color: var(--fs-dark);
  font-size: .85rem;
  font-weight: 700;
}

.fs-contact-form input,
.fs-contact-form select,
.fs-contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #d8dee6;
  border-radius: 6px;
  background: #ffffff;
  color: #677384;
  font: inherit;
}

.fs-contact-form input:disabled,
.fs-contact-form select:disabled,
.fs-contact-form textarea:disabled,
.fs-contact-form button:disabled {
  opacity: .65;
  cursor: not-allowed;
}

.fs-contact-offices {
  padding: 84px 0;
  background: var(--fs-surface);
}

.fs-office-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.fs-office-card {
  padding: 30px;
  background: #ffffff;
  border: 1px solid var(--fs-border);
  border-radius: 10px;
}

.fs-office-card > span {
  display: block;
  margin-bottom: 12px;
  color: var(--fs-accent);
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.fs-office-card h3 {
  margin: 0 0 10px;
  color: var(--fs-dark);
}

.fs-office-card p {
  margin: 0;
  color: #6b7686;
}

.fs-contact-map {
  padding: 70px 0;
}

.fs-contact-map-placeholder {
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
  border: 1px dashed #bfc8d3;
  border-radius: 12px;
  background:
    linear-gradient(
      135deg,
      #f7f9fb,
      #eef3f7
    );
}

.fs-contact-map-placeholder h2 {
  margin: 10px 0;
  color: var(--fs-dark);
}

.fs-contact-map-placeholder p {
  margin: 0;
  color: #697586;
}

.fs-btn-outline-light {
  border-color: rgba(255,255,255,.4);
  color: #ffffff;
  background: transparent;
}

.fs-btn-outline-light:hover {
  border-color: #ffffff;
  color: #ffffff;
}

@media (max-width: 900px) {

  .fs-contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

}

@media (max-width: 650px) {

  .fs-form-row,
  .fs-office-grid {
    grid-template-columns: 1fr;
  }

  .fs-contact-panel {
    padding: 24px;
  }

}