/* ===== Design tokens ===== */
:root {
  --navy: #f6f8fc;          /* light page background */
  --navy-light: #eef2f9;    /* subtly different section background */
  --testimonials-bg: #e9f0fb; /* distinct light-blue tint for testimonials */
  --surface: #ffffff;       /* cards / inputs */
  --border: #dce3ef;
  --accent: #2f6fff;         /* electric blue */
  --accent-soft: rgba(47, 111, 255, 0.12);
  --text: #0f1b3a;          /* deep navy text */
  --text-muted: #5b6783;
  --radius: 16px;
  --max-width: 1140px;
  --transition: 0.25s ease;
  --shadow: 0 20px 45px -22px rgba(15, 27, 58, 0.25);
  --font-heading: "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 1.0625rem; /* ~17px base for comfortable reading */
  background-color: var(--navy);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Layout helpers ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section { padding-block: 6rem; }
.section--alt { background-color: var(--navy-light); }
.section--testimonials {
  background-color: var(--testimonials-bg);
  border-block: 1px solid var(--border);
}

.section__title {
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
}
.section__title::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background-color: var(--accent);
  border-radius: 2px;
  margin: 0.9rem auto 0;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(246, 248, 252, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.nav__brand {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}
.nav__links { display: flex; gap: 2rem; }
.nav__links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--text); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  width: 26px;
  height: 2px;
  background-color: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.9rem 1.9rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.97rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition), background-color var(--transition),
    box-shadow var(--transition);
}
.btn--primary {
  background-color: var(--accent);
  color: #fff;
  box-shadow: 0 10px 30px -10px var(--accent);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -12px var(--accent);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(100vh - 70px);
  background:
    radial-gradient(55% 55% at 75% 25%, rgba(47, 129, 255, 0.22), transparent 70%),
    radial-gradient(45% 45% at 15% 80%, rgba(47, 129, 255, 0.12), transparent 70%);
}
.hero__inner { max-width: 820px; }
.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.1rem;
}
.hero__name {
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.03em;
  margin-bottom: 1.4rem;
}
.hero__tagline {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 2.5rem;
}
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 44px;
  border: 2px solid var(--border);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.hero__scroll-dot {
  width: 4px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 2px;
  animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot {
  0% { opacity: 0; transform: translateY(-4px); }
  50% { opacity: 1; transform: translateY(4px); }
  100% { opacity: 0; transform: translateY(10px); }
}

/* ===== Grid ===== */
.grid { display: grid; gap: 1.75rem; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ===== About ===== */
.about {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  align-items: center;
}
.photo-placeholder {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, var(--surface), var(--navy-light));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.about__img {
  width: 100%;
  height: auto;            /* show the full photo, including hands/ring */
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.about__bio p { color: var(--text-muted); margin-bottom: 1.1rem; }
.about__bio p:last-child { margin-bottom: 0; }

/* ===== Cards (services) ===== */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: transform var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-6px); border-color: var(--accent); }
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background-color: var(--accent-soft);
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 1.1rem;
}
.card__title { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.6rem; }
.card__text { color: var(--text-muted); font-size: 0.95rem; }

/* ===== Portfolio ===== */
.project {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project { padding: 0.75rem; }
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.project__image {
  position: relative;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-soft), var(--navy-light));
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 12px;
  overflow: hidden;
}
/* darkening overlay on hover */
.project__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgba(5, 9, 20, 0);
  transition: background-color var(--transition);
}
.project:hover .project__image::after {
  background-color: rgba(5, 9, 20, 0.35);
}
.project__body { padding: 1.2rem 0.85rem 0.9rem; }
.project__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  transition: color var(--transition), transform var(--transition);
}
.project:hover .project__title {
  color: var(--accent);
  transform: translateX(2px);
}
.project__text { color: var(--text-muted); font-size: 0.92rem; }

/* ===== Testimonials ===== */
.quote {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.quote__text { color: var(--text); font-size: 1rem; font-style: italic; }
.quote__author {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.quote__author strong { color: var(--text); }
.quote__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Contact ===== */
.contact__intro {
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 2.5rem;
  text-align: center;
}
.contact__success {
  max-width: 680px;
  margin: 0 auto 2rem;
  padding: 1.1rem 1.4rem;
  background-color: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text);
  text-align: center;
  font-weight: 500;
}
.contact-form { max-width: 680px; margin-inline: auto; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #6b7aa3; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-group textarea { resize: vertical; }
.contact-form .btn { width: 100%; }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
  background-color: var(--navy-light);
}
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.social { display: flex; gap: 0.75rem; }
.social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  transition: var(--transition);
}
.social a:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .hero__scroll-dot { animation: none; }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
    position: relative;
    z-index: 110; /* stay above the overlay so it can close */
  }
  /* full-screen overlay menu */
  .nav__links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--navy);
    z-index: 105;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }
  .nav__links.is-open { opacity: 1; visibility: visible; }
  .nav__links li { width: 100%; text-align: center; }
  .nav__links a {
    display: block;
    padding: 1.1rem;
    font-size: 1.6rem;   /* large, easy tap target */
    font-weight: 600;
    color: var(--text);
  }
  .nav__links a:hover { color: var(--accent); }

  /* animate hamburger into an X when open */
  .nav__toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav__toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .nav__toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .about { grid-template-columns: 1fr; gap: 2rem; }
  .about__photo { max-width: 360px; margin-inline: auto; width: 100%; }
}
@media (max-width: 640px) {
  .section { padding-block: 4rem; }
  .grid--4, .grid--3 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .site-footer__inner { flex-direction: column; }
}