:root {
    --bg-color: #0d0d0e;
    --card-bg: #161618;
    --accent-color: #3b82f6;
    --text-main: #ffffff;
    --text-dim: #94a3b8;
    --border-color: #2e2e32;
}
@font-face {
    font-family: 'Inter';
    src: url('/fonts/Inter/Inter-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('/fonts/Inter/Inter-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('/fonts/Inter/Inter-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('/fonts/Inter/Inter-ExtraBold.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    margin: 0;
    padding: 100px 0 60px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.logo {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 20px;
    display: inline-block;
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
    padding: 5px 15px;
    border-radius: 8px;
    line-height: 1;
}
/* Навигация */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: rgba(13, 13, 14, 0.8); /* Полупрозрачный фон */
    backdrop-filter: blur(10px);      /* Эффект размытия */
    border-bottom: 1px solid var(--border-color);
    position: fixed;                  /* Закрепляем */
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-btn {
    background: var(--accent-color);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    color: #fff;
    border: none;
    padding: 10px 25px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0; top: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--card-bg);
    margin: 10% auto;
    padding: 40px;
    border: 1px solid var(--border-color);
    width: 90%;
    max-width: 400px;
    border-radius: 20px;
    position: relative;
}

.close {
    position: absolute;
    right: 20px; top: 10px;
    color: var(--text-dim);
    font-size: 28px;
    cursor: pointer;
}

/* Форма */
#contactForm { display: flex; flex-direction: column; gap: 15px; margin-top: 20px; }
#contactForm input {
    background: #222;
    border: 1px solid var(--border-color);
    padding: 12px;
    color: #fff;
    border-radius: 8px;
}
.submit-btn {
    background: var(--accent-color);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    color: #fff;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
}

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

.logo span:last-child {
    color: var(--accent-color);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    text-align: center;
    margin-bottom: 70px;
}

h1 { font-size: 3.5rem; margin: 0; font-weight: 800; letter-spacing: -1px; }
.subtitle { color: var(--accent-color); font-size: 1.1rem; text-transform: uppercase; font-weight: 600; letter-spacing: 1.5px; }

h2 { text-align: center; margin: 80px 0 40px; font-size: 2rem; font-weight: 700; }

.grid-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.about-section { margin-top: 80px; }
.about-content { 
    background: var(--card-bg); 
    padding: 40px; 
    border-radius: 16px; 
    border: 1px solid var(--border-color);
}
.about-content p { font-size: 1.2rem; color: var(--text-main); margin-bottom: 30px; }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.about-item { display: flex; flex-direction: column; gap: 5px; }
.about-item strong { color: var(--accent-color); font-size: 1.1rem; }
.about-item span { color: var(--text-dim); font-size: 0.9rem; }

.case-card {
    background: var(--card-bg);
    padding: 35px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.case-card:hover { border-color: var(--accent-color); transform: translateY(-5px); }
.case-tag { background: rgba(59, 130, 246, 0.15); color: var(--accent-color); border: 1px solid rgba(59, 130, 246, 0.3); padding: 4px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; display: inline-block; margin-bottom: 20px; }
.highlight { color: #fff; font-weight: 600; background: linear-gradient(120deg, rgba(37, 99, 235, 0.2) 0%, rgba(37, 99, 235, 0.2) 100%); }

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
}

.tech-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: rgba(37, 99, 235, 0.05);
    border-color: var(--accent-color);
}

.tech-name { font-weight: 600; font-size: 1rem; display: block; }
.tech-desc { font-size: 0.8rem; color: var(--text-dim); }
/* Кнопка связи */
.contact-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--accent-color);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    color: #fff;
    text-decoration: none;
    padding: 15px 25px;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1000;
}

.contact-button:hover {
    transform: scale(1.05);
    background-color: #1d4ed8;
    box-shadow: 0 15px 25px rgba(37, 99, 235, 0.4);
}

footer { text-align: center; margin-top: 100px; color: var(--text-dim); font-size: 0.9rem; }

@media (max-width: 768px) { h1 { font-size: 2.5rem; } }


/* Адаптивность для мобильных */
@media (max-width: 480px) {
    .contact-button {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}