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

/* ===========================
   Custom Properties
   =========================== */
:root {
  /* Colors */
  --bg:           #0a0a0f;
  --bg-card:      #12121a;
  --bg-card-hover:#1a1a2e;
  --surface:      rgba(255, 255, 255, 0.03);
  --border:       rgba(255, 255, 255, 0.08);
  --text:         #e4e4e7;
  --text-muted:   #a1a1aa;
  --accent:       #0088ff;
  --accent-glow:  rgba(0, 136, 255, 0.35);
  --teal:         #00d4aa;
  --teal-glow:    rgba(0, 212, 170, 0.25);

  /* Typography */
  --font: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-py: clamp(4rem, 8vw, 7rem);

  /* Misc */
  --radius:     12px;
  --radius-sm:  8px;
  --nav-height: 72px;
  --max-width:  1120px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* ===========================
   Utilities
   =========================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.accent {
  color: var(--accent);
}

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

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn--primary {
  padding: 0.85rem 2rem;
  background: linear-gradient(135deg, var(--accent), #339dff);
  color: #fff;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
}

.btn--sm:hover {
  background: #2294ff;
}

.btn--nav {
  padding: 0.55rem 1.35rem;
  font-size: 0.85rem;
}

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

/* ===========================
   Navigation
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

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

.nav__logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-tld {
  font-weight: 500;
  font-size: 0.65em;
  color: var(--text-muted);
  letter-spacing: 0;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 0.25rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__links a:not(.btn) {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav__links a:not(.btn):hover {
  color: var(--text);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
    pointer-events: none;
  }

  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__links a {
    font-size: 1.1rem;
  }
}

/* ===========================
   Hero
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 2rem) 1.5rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

/* ===========================
   Sections (shared)
   =========================== */
.section {
  padding: var(--section-py) 0;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 0.75rem;
}

.section__title--left {
  text-align: left;
}

.section__sub {
  text-align: center;
  color: var(--text-muted);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  margin-bottom: 3rem;
}

/* ===========================
   Services (Card Grid)
   =========================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

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

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 136, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 136, 255, 0.1);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 136, 255, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  color: var(--accent);
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.card__text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===========================
   How It Works (Timeline)
   =========================== */
.how-it-works {
  background: var(--surface);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  position: relative;
}

.timeline__step {
  text-align: center;
  position: relative;
  padding: 1.5rem 1rem;
}

.timeline__number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  border-radius: 50%;
}

.timeline__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.timeline__text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Connector lines between steps (desktop) */
@media (min-width: 769px) {
  .timeline__step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 38px;
    right: -1rem;
    width: 2rem;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--teal));
    opacity: 0.4;
  }
}

/* ===========================
   Why Us (Features Grid)
   =========================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.feature:hover {
  border-color: var(--border);
  background: var(--bg-card);
}

.feature__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 170, 0.1);
  border-radius: var(--radius-sm);
  color: var(--teal);
}

.feature__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.feature__text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===========================
   Contact
   =========================== */
.contact {
  background: var(--surface);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

@media (max-width: 768px) {
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.contact__text {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--accent);
  font-weight: 500;
}

.contact__email a:hover {
  text-decoration: underline;
}

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form__group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form__group input,
.form__group textarea {
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color var(--transition);
  outline: none;
}

.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--accent);
}

.form__group textarea {
  resize: vertical;
  min-height: 100px;
}

.form__status {
  font-size: 0.88rem;
  min-height: 1.4em;
  margin-top: 0.25rem;
}

.form__status--success {
  color: var(--teal);
}

.form__status--error {
  color: #ff6b6b;
}

/* ===========================
   Footer
   =========================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--text);
}

@media (max-width: 600px) {
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ===========================
   Fade-in Animations
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}