/* ===================================
   Utilities — Утилитарные классы
   =================================== */

/* Sections */
.section {
    padding: 180px 0;
    position: relative;
}

.section.bg-secondary {
    background: var(--bg-secondary);
}

.section.bg-tertiary {
    background: var(--bg-tertiary);
}

/* Spacing */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }
.mt-6 { margin-top: 3rem; }
.mt-8 { margin-top: 5rem; }
.mt-10 { margin-top: 8rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }
.mb-8 { margin-bottom: 5rem; }
.mb-10 { margin-bottom: 8rem; }

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Colors */
.text-accent { color: var(--accent); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.bg-accent { background-color: var(--accent); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }

/* Display */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.hidden { display: none; }

/* Flexbox */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }

/* Grid */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Gaps */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }
.gap-5 { gap: 2rem; }
.gap-6 { gap: 3rem; }
.gap-8 { gap: 5rem; }

/* Width & Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.w-auto { width: auto; }
.h-auto { height: auto; }

/* Object Fit */
.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

/* Border Radius */
.rounded { border-radius: 4px; }
.rounded-lg { border-radius: 8px; }
.rounded-xl { border-radius: 12px; }
.rounded-2xl { border-radius: 16px; }
.rounded-full { border-radius: 9999px; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Z-index */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-50 { z-index: 50; }
.z-1000 { z-index: 1000; }

/* Transitions */
.transition { transition: all var(--transition-base); }
.transition-slow { transition: all var(--transition-slow); }

/* Hover Effects */
.hover-accent:hover {
    color: var(--accent);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* Focus States */
.focus-accent:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Line Clamp */
.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Responsive Sections */
@media (max-width: 1024px) {
    .section {
        padding: 140px 0;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 100px 0;
    }
}

@media (max-width: 640px) {
    .section {
        padding: 80px 0;
    }
}