:root {
    --bg: #050505;
    --text: #ffffff;
    --accent: #00f2ff;
    --violet: #8a2be2;
    --card-bg: rgba(255, 255, 255, 0.03);
    --border: rgba(255, 255, 255, 0.1);
}

body.light-theme {
    --bg: #f8f9fa;
    --text: #121212;
    --accent: #5e17eb;
    --violet: #7a00ff;
    --card-bg: #ffffff;
    --border: rgba(0, 0, 0, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; cursor: none; transition: background 0.4s, color 0.4s; }
body { background: var(--bg); color: var(--text); font-family: 'Space Grotesk', sans-serif; overflow-x: hidden; }

/* Кастомний курсор */
.cursor {
    width: 20px; height: 20px; border: 2px solid var(--accent); border-radius: 50%;
    position: fixed; pointer-events: none; z-index: 10000; box-shadow: 0 0 15px var(--accent);
}

/* Навігація */
nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 8%; position: fixed; width: 100%; top: 0; z-index: 999;
    backdrop-filter: blur(15px); border-bottom: 1px solid var(--border);
}

.logo { font-size: 1.8rem; font-weight: 700; letter-spacing: -1px; }
.logo span { color: var(--accent); text-shadow: 0 0 10px var(--accent); }

.nav-right { display: flex; align-items: center; gap: 30px; }

/* Кнопка Проєкти в меню */
.projects-nav-btn {
    text-decoration: none; color: var(--text); font-weight: 500;
    padding: 8px 20px; border: 1px solid var(--border); border-radius: 12px;
}
.projects-nav-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Контакти */
.contact-group { display: flex; gap: 20px; }
.contact-unit { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.unit-label { font-size: 10px; font-weight: 700; text-transform: uppercase; color: #666; letter-spacing: 1px; }

.icon-box {
    width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    text-decoration: none; color: var(--text); font-size: 1.2rem; transition: 0.3s;
}

/* Telegram стиль */
.tg:hover { border-color: #0088cc; color: #0088cc; box-shadow: 0 0 15px rgba(0, 136, 204, 0.3); }

/* Email стиль (Конверт + Фіолетовий Неон) */
.mail-neon {
    color: #bb86fc;
    border-color: var(--violet);
    box-shadow: 0 0 20px rgba(138, 43, 226, 0.6);
    background: rgba(138, 43, 226, 0.05);
}
.mail-neon:hover { transform: scale(1.1) translateY(-3px); box-shadow: 0 0 30px rgba(138, 43, 226, 0.9); color: #fff; }

/* Hero секція */
.hero { height: 100vh; display: flex; align-items: center; padding: 0 8%; }
.badge { background: rgba(0, 242, 255, 0.1); color: var(--accent); padding: 5px 15px; border-radius: 20px; font-size: 12px; font-weight: 700; }
h1 { font-size: 4.5rem; line-height: 1.1; margin: 20px 0; font-weight: 700; }
.gradient-text {
  background: linear-gradient(90deg, var(--accent), #7000ff);
  background-clip: text;              
  -webkit-background-clip: text;      
  color: transparent;                 
  -webkit-text-fill-color: transparent; 
}

p { max-width: 500px; color: #888; 
    font-size: 1.1rem; margin-bottom: 30px; 
}

.cta-button {
    display: inline-block; text-decoration: none; background: var(--accent); color: #000;
    padding: 16px 40px; border-radius: 12px; font-weight: 700; transition: 0.3s;
}
.cta-button:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0, 242, 255, 0.4); }

/* Проєкти (Сітка) */
.projects-section { padding: 100px 8%; }
.title { font-size: 2.5rem; margin-bottom: 50px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px; }

.card {
    height: 320px; background: var(--card-bg); border: 1px solid var(--border); border-radius: 25px;
    display: flex; align-items: center; justify-content: center; font-size: 3.5rem; font-weight: 700;
    text-decoration: none; color: var(--text); position: relative; overflow: hidden; opacity: 0.7; transition: 0.4s;
    }
.card:hover { transform: scale(1.02); border-color: var(--accent); opacity: 1; }
.card-bar { position: absolute; bottom: 0; width: 100%; padding: 12px; background: var(--accent); color: #000; font-size: 0.9rem; text-align: center; transform: translateY(100%); transition: 0.3s; }
.card:hover .card-bar { transform: translateY(0); }

/* Кнопка перемикання теми */
#theme-toggle { background: none; border: 1px solid var(--border); color: var(--text); width: 40px; height: 40px; border-radius: 10px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
#theme-toggle:hover { color: var(--accent); border-color: var(--accent); }