/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --blue: #2fb4e0;
  --blue-dark: #1a8fb8;
  --green: #4ecb71;
  --yellow: #ffd23f;
  --bg-light: #f4fbfd;
  --text-dark: #1f2d3d;
  --text-muted: #5c6b7a;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(47, 180, 224, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg-light);
  line-height: 1.6;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

ul {
  list-style: none;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: var(--white);
  box-shadow: 0 8px 20px rgba(47, 180, 224, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(47, 180, 224, 0.45);
}

.btn-full {
  width: 100%;
}

/* ===== Header ===== */
.site-header {
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--blue-dark);
}

.logo-icon {
  font-size: 1.6rem;
}

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-weight: 600;
}

.nav a {
  color: var(--text-dark);
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--blue-dark);
}

.nav-cta {
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: var(--white) !important;
  padding: 10px 22px;
  border-radius: 50px;
}

.nav-cta:hover {
  opacity: 0.92;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(180deg, #eafbff 0%, var(--bg-light) 100%);
  padding: 90px 0 70px;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-text {
  flex: 1 1 480px;
  max-width: 560px;
}

.hero-text h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.hero-text h1 span {
  color: var(--blue-dark);
  background: linear-gradient(135deg, var(--blue), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-text p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.hero-visual {
  flex: 1 1 320px;
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-circle {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--green));
  opacity: 0.18;
}

.hero-bubble {
  position: absolute;
  font-size: 2.5rem;
  background: var(--white);
  border-radius: 50%;
  width: 76px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  animation: float 4s ease-in-out infinite;
}

.bubble-1 {
  top: 10px;
  left: 20px;
  animation-delay: 0s;
}

.bubble-2 {
  bottom: 30px;
  right: 30px;
  animation-delay: 1.2s;
}

.bubble-3 {
  top: 50%;
  left: 60%;
  animation-delay: 2.4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

/* ===== Section titles ===== */
.section-title {
  font-size: 2.2rem;
  text-align: center;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 46px;
  font-size: 1.05rem;
}

/* ===== Services ===== */
.services {
  padding: 90px 0;
}

.service-category {
  margin-bottom: 50px;
}

.service-category:last-child {
  margin-bottom: 0;
}

.service-category-title {
  font-size: 1.3rem;
  color: var(--blue-dark);
  margin-bottom: 24px;
  padding-bottom: 10px;
  border-bottom: 2px solid #d7ecf3;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border-top: 4px solid var(--blue);
}

.service-card:nth-child(2) {
  border-top-color: var(--green);
}

.service-card:nth-child(3) {
  border-top-color: var(--yellow);
}

.service-card:nth-child(4) {
  border-top-color: var(--blue-dark);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 34px rgba(47, 180, 224, 0.22);
}

.service-icon {
  font-size: 2.6rem;
  margin-bottom: 16px;
}

.service-card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
  color: var(--text-dark);
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* ===== About ===== */
.about {
  background: linear-gradient(135deg, #eafcf1 0%, #eafbff 100%);
  padding: 90px 0;
}

.about-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  flex-wrap: wrap;
}

.about-text {
  flex: 1 1 420px;
}

.about-text .section-title {
  text-align: left;
}

.about-list li {
  font-size: 1.05rem;
  margin-bottom: 14px;
  color: var(--text-dark);
}

.about-visual {
  flex: 0 1 220px;
  display: flex;
  justify-content: center;
}

.about-circle {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--white);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

/* ===== Contact / Form ===== */
.contact {
  padding: 90px 0;
}

.contact-inner {
  display: flex;
  gap: 50px;
  flex-wrap: wrap;
}

.contact-info {
  flex: 1 1 320px;
}

.contact-info .section-title,
.contact-info .section-subtitle {
  text-align: left;
}

.contact-details p {
  margin-bottom: 10px;
  font-size: 1.02rem;
}

.contact-details a {
  color: var(--blue-dark);
  font-weight: 600;
  transition: color 0.2s ease;
}

.contact-details a:hover {
  color: var(--green);
}

.placeholder-text {
  color: var(--text-muted);
  font-style: italic;
}

.quote-form {
  flex: 1 1 420px;
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row-full {
  grid-column: 1 / -1;
}

.form-row label {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-dark);
}

.form-row input,
.form-row select,
.form-row textarea {
  padding: 12px 14px;
  border: 1.5px solid #d7ecf3;
  border-radius: 10px;
  font-size: 0.98rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: border-color 0.2s ease;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--blue);
}

.form-status {
  grid-column: 1 / -1;
  text-align: center;
  font-weight: 600;
  min-height: 20px;
}

.form-status.success {
  color: var(--green);
}

.form-status.error {
  color: #e0503f;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--text-dark);
  color: #cfe7ef;
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-inner .logo {
  color: var(--white);
}

.footer-inner .logo-img {
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.footer-inner p {
  font-size: 0.9rem;
  color: #a9c4cf;
}

/* ===== Responsive ===== */
@media (max-width: 720px) {
  .nav {
    gap: 14px;
    font-size: 0.9rem;
  }

  .hero-text h1 {
    font-size: 2.2rem;
  }

  .quote-form {
    grid-template-columns: 1fr;
    padding: 26px;
  }

  .about-inner,
  .contact-inner {
    flex-direction: column;
    text-align: center;
  }

  .about-text .section-title,
  .contact-info .section-title,
  .contact-info .section-subtitle {
    text-align: center;
  }
}