/* ===== Keep It Simple Agile — Main Stylesheet ===== */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #F5B731;
  --color-primary-dark: #D9A029;
  --color-primary-light: #FDE8A0;
  --color-dark: #333333;
  --color-dark-light: #555555;
  --color-bg: #FFFFFF;
  --color-bg-warm: #FFF9EE;
  --color-bg-dark: #2B2B2B;
  --color-text: #444444;
  --color-text-light: #777777;
  --color-white: #FFFFFF;
  --color-border: #E5E5E5;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1120px;
  --header-height: 72px;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-dark);
  line-height: 1.25;
  font-weight: 700;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }

@media (min-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2.25rem; }
  h3 { font-size: 1.5rem; }
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
}

.section--alt {
  background: var(--color-bg-warm);
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.text-center {
  text-align: center;
}

.section-intro {
  max-width: 640px;
  margin: 0 auto 2.5rem;
  color: var(--color-text-light);
  text-align: center;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

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

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-dark);
}

.btn--outline {
  border-color: var(--color-primary);
  color: var(--color-dark);
  background: transparent;
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-dark);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-dark);
}

.btn--white:hover {
  background: var(--color-primary-light);
}

/* --- Header / Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 48px;
  width: auto;
}

/* Desktop nav */
.nav-list {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-list a {
  font-weight: 500;
  color: var(--color-dark);
  position: relative;
  padding: 0.25rem 0;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-list a:hover::after,
.nav-list a.active::after {
  width: 100%;
}

.nav-list a.active {
  color: var(--color-primary-dark);
}

.nav-list .btn {
  padding: 0.5rem 1.5rem;
}

.nav-list .btn::after {
  display: none;
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  margin: 6px 0;
  transition: all var(--transition);
  border-radius: 2px;
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 6px);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -6px);
}

/* Mobile nav */
@media (max-width: 767px) {
  .nav-toggle {
    display: block;
  }

  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    flex-direction: column;
    justify-content: flex-start;
    padding: 2rem 1.5rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  .nav-list.open {
    transform: translateX(0);
  }

  .nav-list li {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-list a {
    display: block;
    padding: 1rem 0;
    font-size: 1.125rem;
  }

  .nav-list a::after {
    display: none;
  }

  .nav-list li:last-child {
    border-bottom: none;
    margin-top: 1rem;
  }

  .nav-list .btn {
    text-align: center;
    width: 100%;
  }
}

/* --- Hero --- */
.hero {
  padding: 4rem 0 3rem;
  background: var(--color-bg-warm);
}

.hero h1 {
  margin-bottom: 1.25rem;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-light);
  max-width: 580px;
  margin-bottom: 2rem;
}

.hero .btn + .btn {
  margin-left: 0.75rem;
}

@media (min-width: 768px) {
  .hero {
    padding: 6rem 0 5rem;
  }

  .hero p {
    font-size: 1.25rem;
  }
}

/* --- Card grid --- */
.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

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

@media (min-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: inline-block;
  width: 56px;
  height: 56px;
  line-height: 56px;
  text-align: center;
  background: var(--color-primary-light);
  border-radius: var(--radius);
}

.card h3 {
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* --- CTA Banner --- */
.cta-banner {
  background: var(--color-primary);
  padding: 3.5rem 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-dark);
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: var(--color-dark-light);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

/* --- Services detail --- */
.service-detail {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail .service-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.service-detail h3 {
  margin-bottom: 0.5rem;
}

.service-detail ul {
  margin-top: 0.75rem;
  padding-left: 1.25rem;
}

.service-detail ul li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.4rem;
  color: var(--color-text-light);
}

.service-detail ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

@media (min-width: 768px) {
  .service-detail {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }
}

/* --- About --- */
.values-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

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

.value-item {
  padding: 1.5rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-white);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.value-item h3 {
  margin-bottom: 0.5rem;
}

.value-item p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* --- Contact form --- */
.contact-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}

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

.contact-info h3 {
  margin-bottom: 0.5rem;
}

.contact-info p {
  margin-bottom: 1.5rem;
  color: var(--color-text-light);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.contact-info-item .icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  background: var(--color-primary-light);
  border-radius: var(--radius);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-dark);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-dark);
  transition: border-color var(--transition);
  background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-bg-dark);
  color: #AAAAAA;
  padding: 3rem 0 1.5rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.footer-brand img {
  height: 40px;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 300px;
}

.footer-links h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.footer-links a {
  display: block;
  color: #AAAAAA;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid #444;
  margin-top: 2rem;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
}