/* Grid System (12-column Desktop, 8-column Tablet, 4-column Mobile) */
.row {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-24, 24px);
}

/* Base (Desktop) Spans */
.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

/* Tablet (Max 1024px) - 8 columns */
@media (max-width: 1024px) {
    .row {
        grid-template-columns: repeat(8, 1fr);
        gap: var(--space-20, 20px);
    }
    /* Remap desktop spans to tablet spans */
    .col-1 { grid-column: span 1; }
    .col-2 { grid-column: span 1; }
    .col-3 { grid-column: span 2; } /* 25% -> 2/8 (25%) */
    .col-4 { grid-column: span 3; } /* 33% -> ~3/8 (37.5%) */
    .col-5 { grid-column: span 3; } 
    .col-6 { grid-column: span 4; } /* 50% -> 4/8 (50%) */
    .col-7 { grid-column: span 5; }
    .col-8 { grid-column: span 5; } /* 66% -> ~5/8 (62.5%) */
    .col-9 { grid-column: span 6; } /* 75% -> 6/8 (75%) */
    .col-10 { grid-column: span 7; }
    .col-11 { grid-column: span 7; }
    .col-12 { grid-column: span 8; } /* 100% -> 8/8 */
}

/* Mobile (Max 768px) - 4 columns */
@media (max-width: 768px) {
    .row {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-16, 16px);
    }
    /* On mobile, usually everything stacks full width (4 cols) */
    .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, 
    .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 {
        grid-column: span 4;
    }
}

/* File Input Wrapper (using strict padding/gap) */
.file-upload-wrapper {
    position: relative;
    width: 100%;
    height: 120px;
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--space-8, 8px);
    color: var(--text-secondary);
    transition: all var(--transition);
    cursor: pointer;
}
.file-upload-wrapper:hover {
    border-color: var(--accent);
    background: rgba(0, 0, 0, 0.3);
}
.file-upload-wrapper input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}
.file-upload-wrapper img {
    max-height: 80px;
    border-radius: var(--radius-md);
    display: none;
}