/* ===== Layout System ===== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
}

.container-lg {
    max-width: var(--container-2xl);
}

.container-sm {
    max-width: var(--container-lg);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* Flex */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-10 { gap: var(--space-10); }

/* Section */
.section {
    padding: var(--space-24) 0;
}

.section-lg {
    padding: var(--space-32) 0;
}

.section-sm {
    padding: var(--space-16) 0;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-header .section-tag {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
}

.section-header h2 {
    margin-bottom: var(--space-4);
    font-size: var(--text-4xl);
}

.section-header p {
    color: var(--color-gray-500);
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    margin-bottom: 0;
}

/* Two Column */
.row {
    display: flex;
    gap: var(--space-12);
    align-items: center;
}

.row-reverse {
    flex-direction: row-reverse;
}

.col {
    flex: 1;
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-6 { grid-template-columns: repeat(3, 1fr); }
    .row { flex-direction: column; gap: var(--space-8); }
    .row-reverse { flex-direction: column; }
    .section { padding: var(--space-16) 0; }
    .section-lg { padding: var(--space-20) 0; }
    h2 { font-size: var(--text-3xl); }
    .section-header h2 { font-size: var(--text-3xl); }
}

@media (max-width: 768px) {
    .container { padding-left: var(--space-4); padding-right: var(--space-4); }
    .grid-2, .grid-3, .grid-4, .grid-6 { grid-template-columns: 1fr; }
    .section { padding: var(--space-12) 0; }
    .section-lg { padding: var(--space-16) 0; }
    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-2xl); }
    .section-header h2 { font-size: var(--text-2xl); }
    .section-header p { font-size: var(--text-base); }
}