/* =========================================================
   Rasith Munasinghe — Portfolio
   Pure HTML / CSS / JS
   ========================================================= */

/* ---------- Color tokens ---------- */
:root {
  --navy:        #00004d; /* main background */
  --royal:       #002366; /* sections */
  --persian:     #192bc2; /* accents */
  --bright:      #0000ff; /* highlights */
  --cobalt:      #0047ab;
  --denim:       #1560BD;
  --maya:        #73c2fb; /* soft highlights */
  --dodger:      #1E90FF; /* CTAs */

  --bg:          #00002a;
  --bg-2:        #000033;
  --surface:     rgba(255,255,255,0.04);
  --surface-2:   rgba(255,255,255,0.06);
  --border:      rgba(115,194,251,0.15);
  --border-strong: rgba(115,194,251,0.35);

  --text:        #e8f2ff;
  --text-muted:  #8aa3c4;
  --text-dim:    #6b82a3;

  --radius:      14px;
  --radius-sm:   10px;
  --shadow-glow: 0 0 24px rgba(30,144,255,0.45), 0 0 60px rgba(30,144,255,0.18);

  --font-sans:   'Space Grotesk', system-ui, -apple-system, Segoe UI, sans-serif;
  --font-mono:   'Space Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- Animated background ---------- */
.bg-gradient {
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(1000px 600px at 10% -10%, rgba(25,43,194,0.4), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(30,144,255,0.25), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(0,71,171,0.35), transparent 60%),
    linear-gradient(180deg, #00002a 0%, #00001a 100%);
  animation: bgShift 18s ease-in-out infinite alternate;
}
@keyframes bgShift {
  0%   { filter: hue-rotate(0deg) brightness(1); }
  100% { filter: hue-rotate(15deg) brightness(1.08); }
}
.bg-grid {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(115,194,251,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(115,194,251,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7), transparent 75%);
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(0, 0, 30, 0.55);
  border-bottom: 1px solid var(--border);
  transition: background .3s ease;
}
.nav-container {
  display: flex; align-items: center; justify-content: space-between;
  width: min(1200px, 92%); margin: 0 auto; padding: 14px 0;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--dodger), var(--persian));
  border-radius: 8px;
  font-family: var(--font-mono); font-weight: 700; font-size: 14px;
  box-shadow: 0 0 18px rgba(30,144,255,0.55);
}
.logo-text { font-family: var(--font-mono); font-weight: 700; letter-spacing: .2px; }
.logo-dot { color: var(--maya); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-size: 15px; color: var(--text-muted);
  position: relative; transition: color .2s ease;
}
.nav-link:hover, .nav-link.active { color: var(--maya); }
.nav-link.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -8px;
  height: 2px; background: linear-gradient(90deg, var(--dodger), var(--maya));
  box-shadow: 0 0 10px var(--dodger);
  border-radius: 2px;
}
.nav-cta { padding: 8px 18px; }
.hamburger {
  display: none; width: 40px; height: 40px; flex-direction: column; gap: 5px;
  align-items: center; justify-content: center; border-radius: 8px;
  border: 1px solid var(--border);
}
.hamburger span {
  width: 22px; height: 2px; background: var(--maya); border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 15px; line-height: 1;
  transition: transform .2s ease, box-shadow .25s ease, background .2s ease, color .2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn-primary {
  background: linear-gradient(135deg, var(--bright), var(--dodger));
  color: #fff; box-shadow: 0 0 0 rgba(30,144,255,0);
}
.btn-primary.glow:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.btn-ghost {
  background: rgba(115,194,251,0.06);
  border: 1px solid var(--border-strong);
  color: var(--maya);
}
.btn-ghost:hover {
  background: rgba(115,194,251,0.12);
  border-color: var(--maya);
  box-shadow: 0 0 16px rgba(115,194,251,0.25);
  transform: translateY(-2px);
}
.btn-mini { padding: 8px 14px; font-size: 13px; border-radius: 8px; }
.btn.full { width: 100%; justify-content: center; }

/* ---------- Hero ---------- */
.hero { padding: 40px 0 80px; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center;
}
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 13px;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--maya); background: rgba(30,144,255,0.05);
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--maya);
  box-shadow: 0 0 10px var(--maya);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.85); }
}
.hero-title {
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.05; margin: 22px 0 14px;
  font-weight: 700; letter-spacing: -.02em;
}
.grad-text {
  background: linear-gradient(135deg, var(--maya), var(--dodger), var(--persian));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-role {
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--maya); font-weight: 500; min-height: 1.6em;
  font-family: var(--font-mono);
}
.cursor { animation: blink 1s steps(2) infinite; color: var(--dodger); }
@keyframes blink { 50% { opacity: 0; } }
.hero-desc {
  color: var(--text-muted); font-size: 17px; max-width: 520px; margin: 18px 0 28px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 36px; margin-top: 44px;
  padding-top: 28px; border-top: 1px solid var(--border);
}
.hero-stats > div { display: flex; flex-direction: column; }
.hero-stats strong {
  font-size: 28px;
  background: linear-gradient(135deg, var(--maya), var(--dodger));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stats span { font-size: 13px; color: var(--text-dim); }

.hero-visual {
  position: relative; display: flex; align-items: center; justify-content: center;
}
.glow-ring {
  position: absolute; inset: 0;
  background: radial-gradient(circle, rgba(30,144,255,0.35), transparent 60%);
  filter: blur(40px);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.profile-img {
  position: relative; z-index: 1; max-width: 460px; width: 100%;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  box-shadow: 0 0 80px rgba(30,144,255,0.35);
  animation: float 6s ease-in-out infinite;
}

/* ---------- Sections ---------- */
.section { padding: 100px 0; position: relative; }
.section.alt {
  background: linear-gradient(180deg, transparent, rgba(0,35,102,0.25), transparent);
}
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.eyebrow {
  display: inline-block; font-family: var(--font-mono); color: var(--dodger);
  font-size: 14px; margin-bottom: 12px; letter-spacing: .04em;
}
contact-list
.section-sub { color: var(--text-muted); font-size: 17px; }
h3 { font-size: 22px; margin: 0 0 16px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.about-story p { color: var(--text-muted); margin-bottom: 16px; }
.about-skills .skill { margin-bottom: 22px; }
.skill-row { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 8px; color: var(--text); }
.bar {
  width: 100%; height: 8px; background: rgba(115,194,251,0.08);
  border-radius: 999px; overflow: hidden;
}
.bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--dodger), var(--maya));
  border-radius: 999px;
  box-shadow: 0 0 12px rgba(30,144,255,0.6);
  transition: width 1.4s cubic-bezier(.2,.8,.2,1);
}
.tools { margin-top: 60px; text-align: center; }
.tools-title { text-align: center; margin-bottom: 24px; font-size: 22px; }
.tools-grid {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
}
.tool-chip {
  padding: 8px 16px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border);
  font-size: 14px; color: var(--maya); font-family: var(--font-mono);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.tool-chip:hover {
  border-color: var(--dodger); transform: translateY(-2px);
  box-shadow: 0 0 14px rgba(30,144,255,0.35);
}
.success-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #0f172a;
  color: #22c55e;
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 14px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.success-toast.show {
  opacity: 1;
  transform: translateY(0);
}
/* ---------- Projects ---------- */
.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px;
}
.project-card {
  background: linear-gradient(180deg, var(--surface), rgba(255,255,255,0.02));
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: 0 16px 40px -10px rgba(0,0,0,.6), 0 0 30px rgba(30,144,255,0.25);
}
.project-img {
  aspect-ratio: 16/10; overflow: hidden;
  background: rgba(0,0,0,0.3);
}
.project-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s ease;
}
.project-card:hover .project-img img { transform: scale(1.07); }
.project-body { padding: 22px; }
.project-body h3 { color: var(--text); margin-bottom: 8px; }
.project-body p { color: var(--text-muted); font-size: 15px; margin: 0 0 16px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.chip {
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  background: rgba(30,144,255,0.1); color: var(--maya);
  border: 1px solid var(--border); font-family: var(--font-mono);
}
.project-cta { display: flex; gap: 8px; }

/* ---------- Services ---------- */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px;
}
.service-card {
  padding: 32px 24px; text-align: center;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.service-card:hover {
  transform: translateY(-6px); border-color: var(--border-strong);
  box-shadow: 0 0 30px rgba(30,144,255,0.25);
}
.service-icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--persian), var(--dodger));
  font-size: 22px; font-family: var(--font-mono); font-weight: 700;
  box-shadow: 0 0 20px rgba(30,144,255,0.4);
}
.service-card p { color: var(--text-muted); font-size: 15px; margin: 0; }

.pricing { margin-top: 80px; }
.pricing-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px;
}
.price-card {
  position: relative; padding: 32px 26px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.price-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.price-card.featured {
  border-color: var(--dodger);
  background: linear-gradient(180deg, rgba(30,144,255,0.12), rgba(30,144,255,0.03));
  box-shadow: 0 0 30px rgba(30,144,255,0.25);
}
.best {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--bright), var(--dodger));
  font-size: 12px; font-weight: 700; padding: 5px 14px; border-radius: 999px;
  box-shadow: 0 0 16px rgba(30,144,255,0.6);
}
.price-card h4 { font-size: 18px; margin: 0 0 10px; color: var(--maya); font-family: var(--font-mono); }
.price { font-size: 36px; font-weight: 700; margin-bottom: 18px; }
.price span { font-size: 14px; color: var(--text-dim); font-weight: 400; }
.price-card ul { list-style: none; padding: 0; margin: 0 0 22px; }
.price-card li {
  padding: 8px 0 8px 22px; font-size: 14px; color: var(--text-muted);
  position: relative;
}
.price-card li::before {
  content: '✓'; position: absolute; left: 0; color: var(--maya); font-weight: 700;
}

.process { margin-top: 80px; }
.steps {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px;
}
.step {
  padding: 26px 22px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.step:hover { border-color: var(--border-strong); box-shadow: 0 0 24px rgba(30,144,255,0.2); transform: translateY(-3px); }
.step-num {
  display: inline-block; font-family: var(--font-mono); color: var(--dodger);
  font-size: 14px; margin-bottom: 12px;
}
.step h4 { margin: 0 0 8px; font-size: 17px; }
.step p { color: var(--text-muted); font-size: 14px; margin: 0; }

.why { margin-top: 80px; }
.why-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px;
}
.why-item {
  padding: 24px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.why-item strong { display: block; color: var(--maya); margin-bottom: 6px; font-size: 16px; }
.why-item p { margin: 0; color: var(--text-muted); font-size: 14px; }

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px;
}
.testimonial {
  padding: 28px 24px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.testimonial:hover {
  transform: translateY(-4px); border-color: var(--border-strong);
  box-shadow: 0 0 28px rgba(30,144,255,0.22);
}
.stars { color: var(--maya); font-size: 16px; letter-spacing: 2px; margin-bottom: 12px; }
.testimonial p { color: var(--text); font-size: 15px; margin: 0 0 18px; font-style: italic; }
.author strong { display: block; color: var(--maya); }
.author span { font-size: 13px; color: var(--text-dim); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact-list { margin-top: 32px; display: flex; flex-direction: column; gap: 10px; }
.contact-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.contact-item:hover {
  border-color: var(--border-strong); transform: translateX(4px);
  box-shadow: 0 0 18px rgba(30,144,255,0.2);
}
.ci-label { color: var(--text-dim); font-family: var(--font-mono); font-size: 13px; }
.ci-value { color: var(--maya); font-weight: 500; }

.social-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.social-icons {
  display: flex;
  gap: 12px;
  align-items: center;
}

.icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--maya);
  font-size: 14px;
  transition: all 0.25s ease;
}

.icon:hover {
  transform: translateY(-3px) scale(1.05);
  border-color: var(--border-strong);
  box-shadow: 0 0 12px rgba(30,144,255,0.3);
}

.icon:nth-child(1):hover { color: #1877f2; }
.icon:nth-child(2):hover { color: #ffffff; }
.icon:nth-child(3):hover { color: #e4405f; }

.contact-form {
  padding: 32px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.field { margin-bottom: 18px; }
.field label {
  display: block; font-size: 13px; color: var(--text-muted);
  margin-bottom: 8px; font-family: var(--font-mono);
}
.field input, .field textarea {
  width: 100%; padding: 12px 14px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font: inherit; font-size: 15px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-dim); }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--dodger);
  box-shadow: 0 0 0 3px rgba(30,144,255,0.18);
}
.field textarea { resize: vertical; min-height: 120px; }
.form-note {
  margin: 12px 0 0; font-size: 14px; color: var(--maya); text-align: center;
  min-height: 1.4em;
}

/* ---------- Page hero (projects.html) ---------- */
.page-hero { padding: 80px 0 30px; text-align: center; }
.page-hero .badge { margin-bottom: 18px; }
.page-title {
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.05; margin: 12px 0 16px;
  font-weight: 700; letter-spacing: -.02em;
}
.page-sub {
  color: var(--text-muted); font-size: 17px; max-width: 620px; margin: 0 auto;
}
.filter-bar {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin-top: 36px;
}
.filter-btn {
  padding: 8px 18px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 13px; color: var(--text-muted);
  transition: all .2s ease;
}
.filter-btn:hover {
  color: var(--maya); border-color: var(--border-strong);
}
.filter-btn.active {
  background: linear-gradient(135deg, var(--bright), var(--dodger));
  color: #fff; border-color: transparent;
  box-shadow: 0 0 16px rgba(30,144,255,0.45);
}
.center-cta { text-align: center; margin-top: 50px; }
.empty-state {
  text-align: center; color: var(--text-dim); font-style: italic;
  padding: 40px 0;
}
.project-card.hidden { display: none; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 30px 0; margin-top: 40px;
  background: rgba(0, 0, 20, 0.6);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px; font-size: 14px; color: var(--text-dim);
}
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: var(--maya); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: linear-gradient(135deg, var(--persian), var(--dodger));
  color: #fff; padding: 14px 22px; border-radius: 12px;
  font-weight: 500; font-size: 15px;
  box-shadow: var(--shadow-glow);
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
  z-index: 100;
}
.toast.show {
  opacity: 1; transform: translateX(-50%) translateY(0);
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { padding: 60px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .profile-img { max-width: 280px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .section { padding: 70px 0; }
  .hero-stats { gap: 24px; }
  .hero-stats strong { font-size: 22px; }

  .hamburger { display: flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(0,0,30,0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 16px 5%;
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: transform .25s ease, opacity .25s ease;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { padding: 14px 0; border-bottom: 1px solid var(--border); }
  .nav-link.active::after { display: none; }
  .nav-cta { margin-top: 12px; text-align: center; justify-content: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 38px; }
  .hero-stats { flex-wrap: wrap; gap: 18px; }
  .contact-form { padding: 22px; }
}