/* Utility helpers - Mobile First */

.section-intro {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

.page-title {
    font-size: clamp(1.5rem, 4vw, 2.3rem);
    letter-spacing: -0.04em;
    margin-bottom: 1rem;
}

.page-subtitle {
    color: var(--text-light);
    margin-top: 0.5rem;
    font-size: 0.95rem;
    max-width: 720px;
    line-height: 1.6;
}

.text-muted {
    color: var(--text-light);
}

.empty-state {
    text-align: center;
    color: var(--text-light);
    padding: 1.5rem;
    background: rgba(245, 245, 245, 0.5);
    border-radius: 0.5rem;
}

.footer-links {
    list-style: none;
    line-height: 2;
    padding-left: 0;
    margin: 0;
}

.footer-links li a {
    color: var(--text-light);
    transition: color 0.2s ease;
}

.footer-links li a:hover {
    color: var(--text-white);
}

/* Utility classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.full-width {
    width: 100%;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* Tablet breakpoint (641px - 900px) */
@media (min-width: 641px) {
    .section-intro {
        margin-bottom: 2rem;
        font-size: 1rem;
    }

    .page-title {
        margin-bottom: 1.2rem;
    }

    .page-subtitle {
        margin-top: 0.75rem;
    }

    .empty-state {
        padding: 2rem;
    }
}

/* Desktop (901px+) */
@media (min-width: 901px) {
    .section-intro {
        margin-bottom: 2.5rem;
    }

    .page-title {
        margin-bottom: 1.5rem;
    }
}

/* Mobilní zařízení (max 640px) */
@media (max-width: 640px) {
    .section-intro {
        margin-bottom: 1.25rem;
        font-size: 0.9rem;
    }

    .page-title {
        margin-bottom: 0.75rem;
        font-size: clamp(1.3rem, 3.5vw, 1.8rem);
    }

    .page-subtitle {
        margin-top: 0.35rem;
        font-size: 0.9rem;
    }

    .empty-state {
        padding: 1rem;
        margin: 1rem 0;
    }

    .mt-1 { margin-top: 0.35rem; }
    .mt-2 { margin-top: 0.75rem; }
    .mt-3 { margin-top: 1rem; }
    .mt-4 { margin-top: 1.5rem; }

    .mb-1 { margin-bottom: 0.35rem; }
    .mb-2 { margin-bottom: 0.75rem; }
    .mb-3 { margin-bottom: 1rem; }
    .mb-4 { margin-bottom: 1.5rem; }

    .p-1 { padding: 0.35rem; }
    .p-2 { padding: 0.75rem; }
    .p-3 { padding: 1rem; }
    .p-4 { padding: 1.5rem; }
}