/* =========================================================
   SMART SOLAR SOLUTIONS — DESIGN TOKENS
   Values sourced directly from the approved design system.
   ========================================================= */

:root {
  /* Color: Navy */
  --navy-900: #081B2E;
  --navy-800: #0D2B47;
  --navy-700: #123A5E;
  --navy-600: #1E4E79;
  --navy-500: #2E6494;
  --navy-100: #E4EBF1;
  --navy-50:  #F3F6F9;

  /* Color: Orange */
  --orange-700: #B85E10;
  --orange-600: #D97615;
  --orange-500: #EF8A1F;
  --orange-100: #FCE8D2;
  --orange-50:  #FDF3E7;

  /* Color: Green */
  --green-600: #1F7A45;
  --green-500: #2E9E5B;
  --green-100: #DCF0E4;

  /* Neutrals */
  --ink-900: #101418;
  --ink-700: #3C444C;
  --ink-500: #6B747C;
  --ink-200: #D6DBDF;
  --ink-100: #EDF0F2;
  --white:   #FFFFFF;

  /* State */
  --error: #B3261E;
  --error-bg: #FBE9E7;

  /* Spacing scale (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-8: 48px;
  --space-10: 64px;
  --space-12: 96px;
  --space-16: 128px;

  /* Radius / shadow */
  --radius: 8px;
  --shadow-default: 0 1px 2px rgba(8,27,46,0.06);
  --shadow-hover: 0 8px 20px rgba(8,27,46,0.10);

  /* Motion */
  --ease-fast: 180ms ease-out;
  --ease-slow: 220ms ease-out;

  /* Type */
  --font-base: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Container */
  --container-max: 1120px;
}

/* =========================================================
   RESET
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--ink-900);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
ul { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; color: var(--navy-800); }
p { margin: 0; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy-800);
  color: var(--white);
  padding: var(--space-3) var(--space-5);
  z-index: 200;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 640px) {
  .container { padding: 0 32px; }
}
@media (min-width: 1024px) {
  .container { padding: 0; }
}

/* =========================================================
   TYPOGRAPHY SCALE
   ========================================================= */
h1, .h1 { font-size: 28px; line-height: 1.15; letter-spacing: -0.25px; font-weight: 700; }
h2, .h2 { font-size: 24px; line-height: 1.2; letter-spacing: -0.25px; }
h3, .h3 { font-size: 20px; line-height: 1.3; }
h4, .h4 { font-size: 18px; line-height: 1.35; }
.body-lg { font-size: 16px; line-height: 1.6; }
.body-sm { font-size: 14px; line-height: 1.5; }

@media (min-width: 640px) {
  h1, .h1 { font-size: 34px; }
  h2, .h2 { font-size: 28px; }
  h3, .h3 { font-size: 22px; }
}
@media (min-width: 1024px) {
  h1, .h1 { font-size: 40px; }
  h2, .h2 { font-size: 32px; }
  h3, .h3 { font-size: 24px; }
}

/* =========================================================
   HEADER / NAV
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--ink-200);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo-link { display: flex; align-items: center; gap: var(--space-2); }
.logo-mark { display: flex; }
.logo-text {
  font-weight: 700;
  font-size: 16px;
  color: var(--navy-800);
  line-height: 1.1;
}
.logo-text span { display: block; font-weight: 500; font-size: 12px; color: var(--ink-500); }

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.primary-nav ul {
  display: none;
  gap: var(--space-5);
}
.primary-nav ul li a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-700);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color var(--ease-fast), border-color var(--ease-fast);
}
.primary-nav ul li a:hover { color: var(--orange-500); }
.primary-nav ul li a.active {
  color: var(--orange-500);
  border-bottom-color: var(--orange-500);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: var(--space-2);
}
.menu-toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--navy-800);
  transition: transform var(--ease-fast), opacity var(--ease-fast);
}
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn-nav-cta { display: none; }

@media (min-width: 1024px) {
  .primary-nav {
    position: static;
    background: none;
    height: auto;
    flex-direction: row;
    padding: 0;
  }
  .primary-nav ul { display: flex; }
  .menu-toggle { display: none; }
  .btn-nav-cta { display: inline-flex; }
}

/* Mobile menu panel */
@media (max-width: 1023px) {
  .primary-nav {
    position: fixed;
    inset: 72px 0 0 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-5);
    transform: translateX(100%);
    transition: transform var(--ease-slow);
    overflow-y: auto;
  }
  .primary-nav.is-open { transform: translateX(0); }
  .primary-nav ul {
    display: flex;
    flex-direction: column;
    gap: 0;
  }
  .primary-nav ul li a {
    display: block;
    padding: var(--space-4) 0;
    font-size: 18px;
    border-bottom: 1px solid var(--ink-100);
  }
  .primary-nav .btn-nav-cta {
    display: inline-flex;
    margin-top: var(--space-5);
    justify-content: center;
  }
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1px;
  border: none;
  transition: background-color var(--ease-fast), border-color var(--ease-fast), color var(--ease-fast);
  white-space: nowrap;
}
@media (min-width: 1024px) {
  .btn { height: 48px; }
}
.btn-lg { padding: 0 var(--space-6); }
.btn-sm { height: 40px; padding: 0 var(--space-4); font-size: 14px; }

.btn-primary { background: var(--orange-500); color: var(--white); }
.btn-primary:hover { background: var(--orange-600); }
.btn-primary:active { background: var(--orange-700); }

.btn-secondary { background: var(--white); color: var(--navy-800); border: 1.5px solid var(--navy-800); }
.btn-secondary:hover { background: var(--navy-50); }
.btn-secondary:active { background: var(--navy-100); }

.btn-ghost { background: transparent; color: var(--navy-800); padding: 0; height: auto; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 3px; }
.btn-ghost:hover { text-decoration-color: var(--navy-800); }

.icon-whatsapp { flex-shrink: 0; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.img-placeholder {
  width: 100%;
  height: 100%;
  background:
    repeating-linear-gradient(135deg, var(--navy-700), var(--navy-700) 10px, var(--navy-600) 10px, var(--navy-600) 20px);
  display: flex;
  align-items: flex-end;
  padding: var(--space-3);
  position: relative;
}
.img-placeholder::after {
  content: attr(data-caption);
  font-size: 12px;
  color: var(--white);
  background: rgba(8,27,46,0.65);
  padding: var(--space-2) var(--space-3);
  border-radius: 4px;
  line-height: 1.4;
}
.hero-placeholder { position: absolute; inset: 0; }
.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8,27,46,0.88) 0%, rgba(8,27,46,0.6) 60%, rgba(8,27,46,0.35) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}
.hero-eyebrow {
  color: var(--orange-500);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: var(--space-3);
}
.hero-heading {
  color: var(--white);
  margin-bottom: var(--space-4);
}
.hero-sub {
  color: var(--navy-100);
  font-size: 17px;
  line-height: 1.6;
  margin-bottom: var(--space-6);
  max-width: 52ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.hero-actions .btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.hero-actions .btn-secondary:hover { background: rgba(255,255,255,0.1); }

/* =========================================================
   PAGE HERO (banner variant — used on interior pages)
   ========================================================= */
.page-hero {
  background: var(--navy-800);
  padding: var(--space-10) 0;
}
@media (min-width: 1024px) {
  .page-hero { padding: var(--space-12) 0 var(--space-10); }
}
.page-hero-eyebrow {
  color: var(--orange-500);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: var(--space-3);
}
.page-hero-heading {
  color: var(--white);
  max-width: 720px;
  margin-bottom: var(--space-4);
}
.page-hero-sub {
  color: var(--navy-100);
  font-size: 17px;
  line-height: 1.6;
  max-width: 56ch;
}

/* =========================================================
   STORY SPLIT (About page)
   ========================================================= */
.story-section { background: var(--white); }
.story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}
@media (min-width: 1024px) {
  .story-grid { grid-template-columns: 1fr 1fr; gap: var(--space-12); }
}
.story-content h2 { margin-bottom: var(--space-5); }
.story-content p {
  color: var(--ink-700);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.story-content p:last-child { margin-bottom: 0; }
.story-placeholder {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
}

/* =========================================================
   PROCESS STEPS (About page — genuine sequence)
   ========================================================= */
.process-section { background: var(--navy-50); }
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 1024px) {
  .process-grid { grid-template-columns: repeat(3, 1fr); }
}
.process-step {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius);
  padding: var(--space-5);
}
.process-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--navy-800);
  color: var(--white);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: var(--space-4);
}
.process-step h3 { margin-bottom: var(--space-2); }
.process-step p { color: var(--ink-700); font-size: 14px; line-height: 1.6; }

/* =========================================================
   STATS STRIP
   ========================================================= */
.stats-strip {
  background: var(--navy-800);
  padding: var(--space-6) 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  text-align: center;
}
.stat-item { display: flex; flex-direction: column; gap: var(--space-1); }
.stat-number { color: var(--white); font-weight: 700; font-size: 18px; }
.stat-label { color: var(--navy-100); font-size: 13px; }

@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

/* =========================================================
   SECTIONS (generic)
   ========================================================= */
.section {
  padding: var(--space-10) 0;
}
@media (min-width: 1024px) {
  .section { padding: var(--space-12) 0; }
}
.section-heading { margin-bottom: var(--space-8); max-width: 640px; }
.section-heading h2 { margin-bottom: var(--space-2); }
.section-heading p { color: var(--ink-700); font-size: 16px; }

.section-heading-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: none;
}
@media (min-width: 768px) {
  .section-heading-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
  .section-heading-row > div:first-child { max-width: 560px; }
}
.section-heading-link { white-space: nowrap; }

.services-section { background: var(--white); }
.why-section { background: var(--navy-50); }
.projects-section { background: var(--white); }
.products-section { background: var(--navy-50); }

/* =========================================================
   CARD GRID + SHARED CARD STYLES
   ========================================================= */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 640px) {
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .card-grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-default);
  transition: border-color var(--ease-slow), box-shadow var(--ease-slow);
  overflow: hidden;
}
.card:hover {
  border-color: var(--navy-600);
  box-shadow: var(--shadow-hover);
}

/* Service card */
.service-card {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: var(--navy-50);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-1);
}
.service-card p { color: var(--ink-700); font-size: 15px; line-height: 1.6; }

/* Project / product image placeholders inside cards */
.project-placeholder, .product-placeholder {
  aspect-ratio: 16 / 10;
}
.product-placeholder { aspect-ratio: 4 / 3; }
.card-body { padding: var(--space-5); }
.project-meta {
  font-size: 13px;
  font-weight: 600;
  color: var(--navy-600);
  margin-bottom: var(--space-2);
}
.project-desc { color: var(--ink-700); font-size: 14px; line-height: 1.6; }

.product-tag {
  display: inline-block;
  background: var(--orange-100);
  color: var(--orange-700);
  font-size: 12px;
  font-weight: 600;
  padding: 2px var(--space-2);
  border-radius: 4px;
  margin-bottom: var(--space-2);
}
.product-card h3 { margin-bottom: var(--space-1); }
.product-specs { color: var(--ink-500); font-size: 13px; margin-bottom: var(--space-4); }

/* Overriding hover image zoom */
.card:hover .img-placeholder { transform: scale(1.03); }
.img-placeholder { transition: transform var(--ease-slow); overflow: hidden; }
.project-placeholder, .product-placeholder { overflow: hidden; }

/* =========================================================
   WHY CHOOSE US
   ========================================================= */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}
@media (min-width: 1024px) {
  .why-grid { grid-template-columns: 1fr 1fr; gap: var(--space-12); }
}
.why-media .img-placeholder {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
}
.why-content h2 { margin-bottom: var(--space-6); }
.why-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
.why-list li { display: flex; gap: var(--space-3); align-items: flex-start; }
.why-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--green-100);
  display: flex;
  align-items: center;
  justify-content: center;
}
.why-list h3 { font-size: 17px; margin-bottom: var(--space-1); }
.why-list p { color: var(--ink-700); font-size: 14px; line-height: 1.6; }

/* =========================================================
   CTA BAND
   ========================================================= */
.cta-band {
  background: var(--navy-900);
  padding: var(--space-10) 0;
}
.cta-band-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: flex-start;
}
@media (min-width: 768px) {
  .cta-band-inner { flex-direction: row; align-items: center; justify-content: space-between; }
}
.cta-band h2 { color: var(--white); margin-bottom: var(--space-2); }
.cta-band p { color: var(--navy-100); max-width: 46ch; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: var(--navy-900); color: var(--navy-100); }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding: var(--space-12) 20px var(--space-6);
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); padding-left: 32px; padding-right: 32px; }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; padding-left: 0; padding-right: 0; }
}
.footer-col h3 {
  color: var(--white);
  font-size: 15px;
  margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col ul a, .footer-contact li {
  font-size: 14px;
  color: var(--navy-100);
}
.footer-col ul a:hover { color: var(--orange-500); }
.footer-contact { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-contact a:hover { color: var(--orange-500); }

.footer-brand .logo-text { color: var(--white); }
.footer-brand .logo-text span { color: var(--navy-100); }
.footer-tagline {
  color: var(--navy-100);
  font-size: 14px;
  margin: var(--space-4) 0 var(--space-5);
  max-width: 32ch;
}
.footer-social { display: flex; gap: var(--space-3); }
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy-100);
  transition: background-color var(--ease-fast);
}
.social-icon:hover { background: rgba(255,255,255,0.18); }

.footer-bottom {
  border-top: 1px solid var(--navy-700);
  padding: var(--space-5) 0;
}
.footer-bottom p { font-size: 13px; color: var(--ink-500); text-align: center; }

/* =========================================================
   REDUCED MOTION
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: 0.01ms !important; }
  .card:hover .img-placeholder { transform: none; }
}