/* ============================================
   SITESPOT — DESIGN SYSTEM
   Colors: Deep space navy + cyan/teal energy
   Type: Space Grotesk (display) + Space Mono (accent)
   ============================================ */

:root {
  /* Color Palette */
  --col-bg:         #050d1a;
  --col-bg-2:       #080f1f;
  --col-surface:    #0d1a2e;
  --col-surface-2:  #112240;
  --col-border:     rgba(0, 200, 255, 0.12);
  --col-border-2:   rgba(0, 200, 255, 0.25);

  --col-cyan:       #00c8ff;
  --col-teal:       #00ffcc;
  --col-glow:       rgba(0, 200, 255, 0.15);
  --col-glow-2:     rgba(0, 255, 204, 0.1);

  --col-text:       #e8f4fc;
  --col-text-2:     #7da8c4;
  --col-text-3:     #4a7a9b;

  /* Typography */
  --font-display:   'Space Grotesk', sans-serif;
  --font-mono:      'Space Mono', monospace;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   8rem;

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:    cubic-bezier(0.7, 0, 0.84, 0);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--col-bg);
  color: var(--col-text);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ============================================
   3D CANVAS BACKGROUND
   ============================================ */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Everything over canvas */
nav, section, footer {
  position: relative;
  z-index: 1;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background 0.4s var(--ease-out), backdrop-filter 0.4s;
}

.nav.scrolled {
  background: rgba(5, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--col-border);
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav__logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px var(--col-cyan));
}

.nav__logo-text {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--col-text);
  letter-spacing: 0.05em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav__links a {
  color: var(--col-text-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.nav__links a:hover {
  color: var(--col-cyan);
}

.nav__cta {
  color: var(--col-cyan) !important;
  border: 1px solid var(--col-border-2);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  transition: background 0.2s, border-color 0.2s !important;
}

.nav__cta:hover {
  background: var(--col-glow);
  border-color: var(--col-cyan) !important;
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--col-text);
  transition: transform 0.3s;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero__content {
  max-width: 640px;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--col-cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero__headline {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.35s forwards;
}

.hero__highlight {
  background: linear-gradient(135deg, var(--col-cyan), var(--col-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: 1.1rem;
  color: var(--col-text-2);
  max-width: 480px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.5s forwards;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.65s forwards;
}

.hero__stats {
  display: flex;
  gap: 3rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.8s forwards;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat__num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--col-cyan);
  line-height: 1;
}

.stat__label {
  font-size: 0.8rem;
  color: var(--col-text-3);
  margin-top: 0.25rem;
  letter-spacing: 0.05em;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) 1.2s forwards;
}

.hero__scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--col-text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--col-cyan), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s var(--ease-out);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--col-cyan), var(--col-teal));
  color: var(--col-bg);
  box-shadow: 0 0 30px rgba(0, 200, 255, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(0, 200, 255, 0.5);
}

.btn--ghost {
  color: var(--col-text-2);
  border: 1px solid var(--col-border);
  background: transparent;
}

.btn--ghost:hover {
  color: var(--col-cyan);
  border-color: var(--col-border-2);
  background: var(--col-glow);
}

.btn--large {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

/* ============================================
   CONTAINERS & LAYOUT
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--col-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  padding: var(--space-xl) 0;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

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

.service-card {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: 16px;
  padding: 2.5rem;
  transition: transform 0.3s var(--ease-out), border-color 0.3s, box-shadow 0.3s;
  cursor: default;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--col-border-2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 30px var(--col-glow);
}

.service-card--featured {
  background: linear-gradient(135deg, var(--col-surface) 0%, rgba(0, 200, 255, 0.05) 100%);
  border-color: var(--col-border-2);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  color: var(--col-cyan);
  margin-bottom: 1.5rem;
}

.service-card__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.service-card__desc {
  color: var(--col-text-2);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.service-card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--col-text-3);
  letter-spacing: 0.05em;
}

/* ============================================
   PROCESS
   ============================================ */
.process {
  padding: var(--space-xl) 0;
  background: linear-gradient(to bottom, transparent, var(--col-bg-2), transparent);
}

.process__steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  position: relative;
}

.process__step {
  flex: 1;
  text-align: center;
  padding: 0 1.5rem;
}

.process__step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--col-cyan);
  letter-spacing: 0.1em;
  display: inline-block;
  border: 1px solid var(--col-border-2);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  line-height: 48px;
  margin-bottom: 1.5rem;
  background: var(--col-surface);
  position: relative;
  z-index: 2;
}

.process__step-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.process__step-content p {
  color: var(--col-text-2);
  font-size: 0.9rem;
  line-height: 1.6;
}

.process__connector {
  flex: 0 0 1px;
  height: 1px;
  background: linear-gradient(to right, var(--col-cyan), transparent);
  align-self: center;
  margin-top: -4rem;
  width: 40px;
  min-width: 20px;
}

@media (max-width: 768px) {
  .process__steps {
    flex-direction: column;
    align-items: center;
  }
  .process__connector {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--col-cyan), transparent);
    margin-top: 0;
  }
}

/* ============================================
   WORK / PORTFOLIO
   ============================================ */
.work {
  padding: var(--space-xl) 0;
}

.work__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
}

.work-card {
  border-radius: 16px;
  overflow: hidden;
  min-height: 280px;
  position: relative;
  border: 1px solid var(--col-border);
  cursor: pointer;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s;
}

.work-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.work-card--large {
  grid-column: 1 / -1;
  min-height: 360px;
}

.work-card__bg {
  position: absolute;
  inset: 0;
  transition: transform 0.5s var(--ease-out);
}

.work-card:hover .work-card__bg {
  transform: scale(1.03);
}

.work-card__content {
  position: relative;
  z-index: 2;
  padding: 2rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(to top, rgba(5, 13, 26, 0.9), transparent);
}

.work-card__category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--col-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.work-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.work-card__metric {
  color: var(--col-teal);
  font-size: 0.9rem;
  font-weight: 500;
}

@media (max-width: 768px) {
  .work__grid {
    grid-template-columns: 1fr;
  }
  .work-card--large {
    grid-column: 1;
  }
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: var(--space-xl) 2rem;
}

.contact__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.contact__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 200, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.contact__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.contact__sub {
  color: var(--col-text-2);
  margin-bottom: 3rem;
}

.contact__form {
  text-align: left;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (max-width: 600px) {
  .form__row {
    grid-template-columns: 1fr;
  }
}

.form__field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.form__field label {
  font-size: 0.85rem;
  color: var(--col-text-2);
  font-weight: 500;
}

.form__field input,
.form__field textarea {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: 8px;
  padding: 0.875rem 1rem;
  color: var(--col-text);
  font-family: var(--font-display);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  resize: vertical;
}

.form__field input:focus,
.form__field textarea:focus {
  border-color: var(--col-cyan);
  box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.1);
}

.form__field input::placeholder,
.form__field textarea::placeholder {
  color: var(--col-text-3);
}

.contact__form .btn {
  width: 100%;
  justify-content: center;
  margin-top: 0.5rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--col-border);
}

.footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
}

.footer__logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  filter: drop-shadow(0 0 6px var(--col-cyan));
}

.footer__nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer__nav a {
  color: var(--col-text-3);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer__nav a:hover {
  color: var(--col-cyan);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--col-text-3);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.8); }
  50%       { opacity: 1;   transform: scaleY(1); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }
  .nav__burger {
    display: flex;
  }
  .hero {
    padding: 6rem 1.5rem 4rem;
  }
  .hero__stats {
    gap: 1.5rem;
  }
}