/* ==============================
   Premium Brand Variables
   ============================== */
:root {
  /* Colors */
  --color-bg: #0a192f;
  --color-bg-light: #112240;
  --color-bg-lighter: #233554;
  --color-text-main: #ccd6f6;
  --color-text-muted: #8892b0;
  --color-primary: #64ffda;
  --color-secondary: #bd5b3c; /* Warm accent */
  --color-white: #e6f1ff;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;

  /* Spacing & Layout */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --container-width: 1200px;
  
  /* Transitions */
  --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* ==============================
   Reset & Base
   ============================== */
html {
  scroll-behavior: smooth;
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 1rem 0;
  color: var(--color-white);
  font-weight: 700;
  line-height: 1.1;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.75rem; }

p { margin: 0 0 1rem 0; color: var(--color-text-muted); }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover { color: var(--color-primary); text-decoration: underline; }

/* ==============================
   Utilities
   ============================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.text-primary { color: var(--color-primary) !important; }
.text-muted { color: var(--color-text-muted) !important; }

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: rgba(100, 255, 218, 0.1);
}

.btn-solid {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.btn-solid:hover {
  background-color: #4cdbb9;
}

/* ==============================
   Navbar
   ============================== */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(10, 25, 47, 0.85);
  backdrop-filter: blur(10px);
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-text-main);
  font-size: 0.9rem;
}

.nav-link:hover { color: var(--color-primary); text-decoration: none; }

/* ==============================
   Hero Section
   ============================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 0;
}

.hero-subtitle {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
  margin-bottom: 20px;
}

.hero-title {
  color: var(--color-white);
}

.hero-desc {
  max-width: 540px;
  font-size: 1.2rem;
  margin-bottom: 40px;
}

/* ==============================
   Cards (Services/Projects)
   ============================== */
.card {
  background-color: var(--color-bg-light);
  padding: 2rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  height: 100%;
}

.card:hover {
  transform: translateY(-5px);
  background-color: var(--color-bg-lighter);
}

.card-icon {
  color: var(--color-primary);
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

/* ==============================
   Footer
   ============================== */
footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}