@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');

:root {
  /* Варіант 5 Палітра - Vitality Pulse */
  --primary-color: #0F0766;      /* Navy Blue */
  --secondary-color: #1A237E;    /* Indigo */
  --accent-color: #00E5FF;       /* Cyan Neon */
  --light-color: #F0F4F8;        /* Alice Blue */
  --dark-color: #050505;         /* Pure Black */
  --gradient-primary: linear-gradient(90deg, #0F0766 0%, #283593 100%);
  --hover-color: #00B8D4;
  --background-color: #FFFFFF;
  --text-color: #37474F;
  --border-color: rgba(15, 7, 102, 0.1);
  --divider-color: rgba(0, 229, 255, 0.3);
  --shadow-color: rgba(0, 0, 0, 0.1);
  --highlight-color: #00E5FF;
  
  --main-font: 'Oswald', sans-serif;
  --alt-font: 'Lato', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--alt-font);
    color: var(--text-color);
    background-color: var(--light-color);
}

h1, h2, h3, h4 {
    font-family: var(--main-font);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-color);
}

/* Technical Card */
.tech-card {
    background: #fff;
    border: 1px solid #E0E0E0;
    border-left: 4px solid var(--primary-color);
    padding: 2rem;
    transition: 0.3s;
}
.tech-card:hover {
    border-left-color: var(--accent-color);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* Tech Button */
.btn-tech {
    background: transparent;
    color: var(--primary-color);
    padding: 12px 30px;
    border: 2px solid var(--primary-color);
    font-weight: 700;
    text-transform: uppercase;
    transition: 0.3s;
    display: inline-block;
    text-decoration: none;
}
.btn-tech:hover {
    background: var(--primary-color);
    color: var(--accent-color);
    box-shadow: 0 0 15px rgba(15, 7, 102, 0.4);
}
.btn-tech-filled {
    background: var(--primary-color);
    color: #fff;
    padding: 14px 40px;
    font-weight: 700;
    text-transform: uppercase;
    border: none;
    transition: 0.3s;
    display: inline-block;
    text-decoration: none;
}
.btn-tech-filled:hover {
    background: var(--secondary-color);
    color: var(--accent-color);
}

/* Grid Feature */
.grid-feat-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
    margin-bottom: 1.5rem;
}
.grid-feat-icon {
    background: var(--light-color);
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border-radius: 4px;
}

/* Navigation */
#nav-toggle:checked + .nav-menu {
    display: block;
}

/* Logo */
header img[alt="logo"], footer img[alt="logo"] {
    filter: brightness(0) invert(1);
}